US2788981A - Strain releasable ski binding - Google Patents

Strain releasable ski binding Download PDF

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Publication number
US2788981A
US2788981A US465199A US46519954A US2788981A US 2788981 A US2788981 A US 2788981A US 465199 A US465199 A US 465199A US 46519954 A US46519954 A US 46519954A US 2788981 A US2788981 A US 2788981A
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Prior art keywords
heel
ski
toe
boot
holding member
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US465199A
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Dell W Emerson
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    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63CSKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C9/00Ski bindings
    • A63C9/08Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings
    • A63C9/086Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings using parts which are fixed on the shoe of the user and are releasable from the ski binding
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63CSKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C9/00Ski bindings
    • A63C9/08Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings
    • A63C9/084Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with heel hold-downs, e.g. swingable
    • A63C9/0841Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with heel hold-downs, e.g. swingable with a single jaw
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63CSKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C9/00Ski bindings
    • A63C9/08Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings
    • A63C9/084Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with heel hold-downs, e.g. swingable
    • A63C9/0846Details of the release or step-in mechanism
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63CSKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C9/00Ski bindings
    • A63C9/08Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings
    • A63C9/085Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with sole hold-downs, e.g. swingable
    • A63C9/08507Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with sole hold-downs, e.g. swingable with a plurality of mobile jaws
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63CSKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C9/00Ski bindings
    • A63C9/08Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings
    • A63C9/085Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with sole hold-downs, e.g. swingable
    • A63C9/08557Details of the release mechanism
    • A63C9/08564Details of the release mechanism using cam or slide surface
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63CSKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C9/00Ski bindings
    • A63C9/005Ski bindings with means for adjusting the position of a shoe holder or of the complete binding relative to the ski
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63CSKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C9/00Ski bindings
    • A63C9/08Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings
    • A63C9/0805Adjustment of the toe or heel holders; Indicators therefor
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63CSKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C9/00Ski bindings
    • A63C9/08Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings
    • A63C9/084Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with heel hold-downs, e.g. swingable
    • A63C9/0847Details of the manual release
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T292/00Closure fasteners
    • Y10T292/08Bolts
    • Y10T292/0876Double acting
    • Y10T292/0878Sliding

Definitions

  • This invention relates to a strain releasable ski binding and an object of this invention is to provide a ski binding which will attach the ski boot of a user to a ski firmly enough to satisfy all of the requirements of ordinary use but which will be released by strain exerted in substantially any direction before said strain becomes great enough to seriously injure the leg or ankle or foot of the user.
  • Another object is to provide ski binding means capable of efficiently binding both the heel and the toe portion of a ski boot to a ski but which will be released by excess upward strain at the heel of the boot or excess upward strain at the toe of the boot or by excessive torsion in either direction thereby safeguarding the user against injury by any and all of the strains usually encountered in skiing.
  • Another object is to provide a ski binding which can be adjusted so that it will be released by a greater or lesser strain depending on the requirements of the user.
  • Another object is to provide a ski binding comprising a heel block attached to a ski and supporting a movable .and adjustably spring loaded heel engaging member having a bullet shaped forward end portion positioned to engage within a backwardly facing rounded concave depression in a heel plate on a ski boot so that the heel plate ycan be quickly and easily snapped into engagement with .the heel engaging member and will be disengaged therefrom by either an upward or torsional strain before the .strain becomes great enough to injure the user.
  • Another object is to provide ski binding means which fis simple in construction and not expensive to manufac- ⁇ ture, which is free from straps, cables and like devices requiring manual'manipulation, and which functions in .such a manner as to make it possible for a person who fis wearing the ski boots to quickly and easily engage said boots with the skis or disengage said boots from the skis without bringing the hands directly into contact with the :ski binding means.
  • Figure l is a top plan view of a ski equipped with ski binding means constructed in accordance with this invention.
  • Fig. 2 is a fragmentary side elevation of said ski and ski binding means and further showing a fragment of a ski boot having toe and heel plates and held by the ski binding means.
  • Fig. 3 is a longitudinal vertical sectional View, with parts broken away, and on a larger scale than Figs. l and 2, showing the binding means used for the heel portion of the ski boot.
  • Fig. 4 is a detached side elevational view of a movable heel holding member or plunger used in the heel binding means.
  • Fig. 5 is a front end view of said heel holding member.
  • Fig. 6 is a detached top plan view of a heel plate to;-
  • Fig. 7 is a rear view of said heel plate looking in the direction of broken line 7-7 of Fig. 6.
  • Fig. 8 is a longitudinal vertical sectional view showing the binding means used for the toe portion of a ski boot.
  • Fig. 9 is a detached top plan view of a toe holding member which is adapted to be rigidly attached to a ski.
  • Fig. 10 is a detached top plan view of a toe plate which is adapted to be rigidly attached to the toe portion of a ski boot.
  • Fig. 11 is a view partly in side elevation and partly 'in section on a smaller scale than Figs. 4 to 10 inclusive and showing a quickly releasable toe holding member of a modified form as it may appear when engaged with the toe plate of a ski boot.
  • the drawings 15 indicates a fragment of a ski and 16 a fragment of a ski boot having a sole 17 and heel 18 all of conventional construction.
  • the binding means used at the heel of the boot comprises a heel block or housing 20 having a base flange 21 which can be rigidly attached, as by screws 2 2, to the ski 15.
  • the heel block 2@ has a bore or passageway 23 which is inclined downwardly, preferably at an angle of about twenty degrees from the rear end, shown at the left in the drawings, toward the right end of said block.
  • the rear end portion of the bore 23 has internal threads 24.
  • the forward end portion of said bore has an internal shoulder 25.
  • a longitudinally extending keyway 26 is provided within said bore 23.
  • a cylindrical heel holding member or plunger l27 y is slidably disposed within the bore 23 and has an external shoulder 28 which engages the shoulder 25 and limits the forward movement of the heel holding member 27 in the heel block 20.
  • a part 29 of reduced diameter protrudes from the forward end of the heel holding member 27 and terminates in a rounded heel plate engaging portion l30 which is shaped like kthe nose of a bullet except that it has an inclined dat top surface 3l.
  • a key member 32 herein shown as a round pin, is rigid with the heel holding member 27 and operates in the keyway 26 thus keeping the flat surface 31 of the bullet shaped part 30 always uppermost.
  • the heel holding member 27 has a tubular recess 33 which receives one end of a compression spring 34.
  • the other end of the spring 34 extends into a recess 35 in a spring abutment member 36 by which the spring 34 is adjustably supported.
  • the spring abutment member 36 is threaded into the heel block 20 and serves to adjust the compression of the spring 34.
  • a at normally horizontal part 37 of a heel plate is secured by screws 38 to the heel 18 of the shoe.
  • the rear edge of the heel plate part 37 has an upwardly extending integral member 39 and such member 39 is provided with a rearwardly facing rounded concave depression 4l) which is adapted to receive the rounded nose of the bulletshaped member 30.
  • a rounded bend 41 is formed at the junction of the two integral heel plate parts 37 and 39 and this rounded part 41 reacts against the flat inclined surface 31 of the member 30 and retractively moves the member 30 when it is pressed downwardly on said surface 31 in engaging the ski boot with the ski.
  • the uppermost forward corner of the heel block 20 has a beveled edge 19 to help guide the rounded heel plate part 41 down onto the inclined surface 31 if the heel plate comes down on top ofthe heel block 20.
  • a strap receiving opening 42 is provided in the upright heel plate 39 above the concave depression 40.
  • the toe binding means herein disclosed comprises two parts, namely, a toe plate 43 attachable to the ski boot 16 and a toe holding member 44 attachable to the ski ing holes 46, Fig. 10 to receive screws 47 by which the toe plate may be secured to a ski boot sole 17.
  • Said toe plate 'further comprises an integral upright part formed of a medial portion 4S and two side or wing portions 49, said wing portions 49 being odset rearwardly relative to themedial portion 4r?.
  • the medial upright toe plate portion ed has a forwardly facing ⁇ rounded concave depression Si formed therein and this depression 51 is preferably elongated in a vertical direction, as illustrated in Fig. 8.
  • the toe plate '43 has a recess 52 at the location where the upright part 48KV joins the base 45. ri ⁇ his recess 52 helps to guide the ytoe plate into engagement with the toe holding member 44V in applying the boot to the ski and said recess 52 is desirable for structural reasons.
  • the toe holding member d4 comprises a flat base part V53 having longitudinally extending slots 5d toreceive screws 55 by which said toe holding member maybe adjustably secured tothe ski l5.
  • Said toe holding member also includes an integral upright part having a rearwardly facing bullet shaped toe plate engaging member 57 formed therein and positioned to engage within the forwardly7 facing concave recess 5i in the toe plate 43.
  • each lateral edge portion of the upright part 56 is bent to form therein a rearwardly facing trough shaped upright groove for the reception of the tip of a ski pole to be used in detaching the ski boot from the ski while the boot is on the foot.
  • the heel plates and toe plates are permanently attached to the ski boots and the Y' heel blocks 2h and toe holding members 445 are permanently attached to the skis in the correct positions and at theV correct distance apart to properly t and engage with the 'chosen ski boots, depending on the size of the ski boots.
  • the slots 54 in the base 53 of the toe holding member Vallow for some adjustment of this member without changing the location of the screws S5 on the skis.
  • the Vheel plate engaging part 29, 3@ is long enough to allow lsome clearance between the upright heel plate member 39 and the heel block 2d.
  • the heel holding member "27 vwith its bullet'shaped part 3i? is free to move rearwardly against the pressure of the spring 34 and the compression force of this spring can be adjusted.
  • the user places the foot on the ski with the rounded ⁇ concave toe plate'recess v'51 fitting over the protruding part S7 of the upright toe plate holding member and the rounded corner part 41 of the heel plate resting on the inclined surface 31 of the movable member 27. He then puts enough weighton the heel portion of the ski boot to force the heel downwardly onto the ski, in which position the member 30 will t into the concave rounded depression 40 of the heel plate and the boot and ski will be effectively bound together.
  • Ihe spring 3d permits release of the toey binding means as well as the heel binding means in the event either is subjected to a strain great enough to compress but will'release before any of'thesestrains .becomes great Y Y Venough to injure theV legs or ankles'or feet Yof the user Vof the skis.
  • the user can easily and quickly detach the skis from the ski boots by inserting the metaltipj portion of a ski pole in one of the grooves S3 between the ⁇ toc holding member 44 and one of the wingsV 49 of the toe plate 43 and prying the ⁇ toe plate and toeholding mem- 'be.r-.apart.
  • TheY backset of the wings@ and 'the clLued corner portions 51 of said wings facilitate the use ofthe 4 tip portion of a ski pole in this way. VFthis provides for quick Vand -easy release from the'skis without applying the hands directly to the ski bindings.
  • Fig. 1l shows a modified form of toe holding member including a movable mounted ball or bullet shaped part 6G adapted to cooperate with the toe plate d4 and seat Within the recess 51 thereof.
  • the ball di? is secured to an arm 61.
  • the arm 61 is pivotally supported by a pivot pin 62 with the arm extending in two opposite directions from said pin 62,.
  • the pin 62 is mounted in the upper end portion of .an upwardly extending part 63 of an t. shaped bracket 64.
  • V*The base part o5 of the bracket ed rests on and is rigidly secured to the ski i5.
  • the part 63 is inclined toward the ski boot.
  • a strain releasable ski binding for securing a vski boot to a ski
  • the skiboot having a sole provided with a forwardly facing concave toe depression and a heel provided with a rearwardly facing concave heel depressioni; a rearwardly facing releasab'le toe holding mem- Vber of 'bullet Vnose shape rigidly attached to the ski andfipositioned to releasably engage within said toe depressiong a heel block attached to the ski 'in rearwardly spaced relation from the toe holding member, said heel block having a tubular bore which is inclined.
  • a heel holding member movable in said'tubular bore and having a protruding forward end portion of bullet nose kshape positioned to releasably engage within said vheel depression, said protruding forward end portion being iiattened on its top 'side providing an' inclined iiat surface Vfor engagement by the lheel part of the ski boot in the application of the boot to the ski; a longitudinal groove jin the wall of thebore of said heel block; a key rigid with said heel holding member slidably movable in said rgroove preventing rotary movement of the heel holding member in the tubular bore; a compression spring .urgingy said-heel holding member toward the ski boot; and a screw adjustably .supporting said spring.
  • a .strain releasable .sld binding for Securing a ski boot to a ski, said boot having a heel plate rigid with ⁇ the heel thereof and Vprovided with avrearwardly v.facing concaverounded depression;
  • a strain releasable ski binding for securing a ski boot to a ski, said boot having an L shaped toe plate rigid with the front end of the sole thereof and provided with a medially positioned forwardly facing convex rounded depression and said ski boot having an L shaped heel plate rigid with the heel thereof and provided with a medially positioned rearwardly facing rounded depression, each of said L'shaped plates being rounded at the location of its right angle bend and the concave depression in each of said plates being unobstructed at least from below and from the two lateral sides; a rearwardly facing toe holding member rigidly secured to a ski and having a part of bullet nose shape positioned to engage within the recess in said toe plate; a heel block attached to the ski, said heel block having a tubular bore extending entirely therethrough and inclined downwardly from its rear end toward its forward end; the rear end portion of said bore being internally threaded and said bore having an internal shoulder adjacent its forward end and said bore having a longitudinally extending keyway in

Description

D. w. EMERSON 2,788,981
STRAIN RELEASABLE sKI BINDING Filed oct. 28. 1954 April 16, 1957 INI 'EN TOR.
5f/Zed c, 197m@ ST RELEASABLE SKI BINDING Dell W. Emerson, Seattle, Wash.
Application @einher 2S, 1954, Serial No. 465,199 3 Claims. (Cl. 28-11.35)'
This invention relates to a strain releasable ski binding and an object of this invention is to provide a ski binding which will attach the ski boot of a user to a ski firmly enough to satisfy all of the requirements of ordinary use but which will be released by strain exerted in substantially any direction before said strain becomes great enough to seriously injure the leg or ankle or foot of the user.
Another object is to provide ski binding means capable of efficiently binding both the heel and the toe portion of a ski boot to a ski but which will be released by excess upward strain at the heel of the boot or excess upward strain at the toe of the boot or by excessive torsion in either direction thereby safeguarding the user against injury by any and all of the strains usually encountered in skiing.
Another object is to provide a ski binding which can be adjusted so that it will be released by a greater or lesser strain depending on the requirements of the user.
Another object is to provide a ski binding comprising a heel block attached to a ski and supporting a movable .and adjustably spring loaded heel engaging member having a bullet shaped forward end portion positioned to engage within a backwardly facing rounded concave depression in a heel plate on a ski boot so that the heel plate ycan be quickly and easily snapped into engagement with .the heel engaging member and will be disengaged therefrom by either an upward or torsional strain before the .strain becomes great enough to injure the user.
Another object is to provide ski binding means which fis simple in construction and not expensive to manufac- `ture, which is free from straps, cables and like devices requiring manual'manipulation, and which functions in .such a manner as to make it possible for a person who fis wearing the ski boots to quickly and easily engage said boots with the skis or disengage said boots from the skis without bringing the hands directly into contact with the :ski binding means. Y
Other objects of the invention will be apparent from the following description taken in connection with the accompanying drawings.
Figure l is a top plan view of a ski equipped with ski binding means constructed in accordance with this invention.
Fig. 2 is a fragmentary side elevation of said ski and ski binding means and further showing a fragment of a ski boot having toe and heel plates and held by the ski binding means. n
Fig. 3 is a longitudinal vertical sectional View, with parts broken away, and on a larger scale than Figs. l and 2, showing the binding means used for the heel portion of the ski boot. t
Fig. 4 is a detached side elevational view of a movable heel holding member or plunger used in the heel binding means.
Fig. 5 is a front end view of said heel holding member.
Fig. 6 is a detached top plan view of a heel plate to;-
be used on a ski boot.
2,788,981 Patented Apr. 16, 1957 Fig. 7 is a rear view of said heel plate looking in the direction of broken line 7-7 of Fig. 6.
Fig. 8 is a longitudinal vertical sectional view showing the binding means used for the toe portion of a ski boot.
Fig. 9 is a detached top plan view of a toe holding member which is adapted to be rigidly attached to a ski.
Fig. 10 is a detached top plan view of a toe plate which is adapted to be rigidly attached to the toe portion of a ski boot.
Fig. 11 is a view partly in side elevation and partly 'in section on a smaller scale than Figs. 4 to 10 inclusive and showing a quickly releasable toe holding member of a modified form as it may appear when engaged with the toe plate of a ski boot.
Like reference numerals designate like parts throughout the several views.
ln the drawings 15 indicates a fragment of a ski and 16 a fragment of a ski boot having a sole 17 and heel 18 all of conventional construction. The binding means used at the heel of the boot comprises a heel block or housing 20 having a base flange 21 which can be rigidly attached, as by screws 2 2, to the ski 15. The heel block 2@ has a bore or passageway 23 which is inclined downwardly, preferably at an angle of about twenty degrees from the rear end, shown at the left in the drawings, toward the right end of said block. The rear end portion of the bore 23 has internal threads 24. The forward end portion of said bore has an internal shoulder 25. Preferably a longitudinally extending keyway 26 is provided within said bore 23. A cylindrical heel holding member or plunger l27 yis slidably disposed within the bore 23 and has an external shoulder 28 which engages the shoulder 25 and limits the forward movement of the heel holding member 27 in the heel block 20. A part 29 of reduced diameter protrudes from the forward end of the heel holding member 27 and terminates in a rounded heel plate engaging portion l30 which is shaped like kthe nose of a bullet except that it has an inclined dat top surface 3l. A key member 32, herein shown as a round pin, is rigid with the heel holding member 27 and operates in the keyway 26 thus keeping the flat surface 31 of the bullet shaped part 30 always uppermost.
The heel holding member 27 has a tubular recess 33 which receives one end of a compression spring 34. The other end of the spring 34 extends into a recess 35 in a spring abutment member 36 by which the spring 34 is adjustably supported. The spring abutment member 36 is threaded into the heel block 20 and serves to adjust the compression of the spring 34.
A at normally horizontal part 37 of a heel plate is secured by screws 38 to the heel 18 of the shoe. The rear edge of the heel plate part 37 has an upwardly extending integral member 39 and such member 39 is provided with a rearwardly facing rounded concave depression 4l) which is adapted to receive the rounded nose of the bulletshaped member 30. A rounded bend 41 is formed at the junction of the two integral heel plate parts 37 and 39 and this rounded part 41 reacts against the flat inclined surface 31 of the member 30 and retractively moves the member 30 when it is pressed downwardly on said surface 31 in engaging the ski boot with the ski. Preferably the uppermost forward corner of the heel block 20 has a beveled edge 19 to help guide the rounded heel plate part 41 down onto the inclined surface 31 if the heel plate comes down on top ofthe heel block 20. Preferably a strap receiving opening 42 is provided in the upright heel plate 39 above the concave depression 40.
The toe binding means herein disclosed comprises two parts, namely, a toe plate 43 attachable to the ski boot 16 and a toe holding member 44 attachable to the ski ing holes 46, Fig. 10 to receive screws 47 by which the toe plate may be secured to a ski boot sole 17. Said toe plate 'further comprises an integral upright part formed of a medial portion 4S and two side or wing portions 49, said wing portions 49 being odset rearwardly relative to themedial portion 4r?. The upper Vcorners Sii of the Wing portions 49 are bent forwardly, as shown, and the wing portions 49 with the forwardly bent corners 'Sti cooperate with the'metal tip of a ski pole facilitating detachment of the ski boot from the ski, as hereinafter explained. The medial upright toe plate portion ed has a forwardly facing `rounded concave depression Si formed therein and this depression 51 is preferably elongated in a vertical direction, as illustrated in Fig. 8. Preferably the toe plate '43 has a recess 52 at the location where the upright part 48KV joins the base 45. ri`his recess 52 helps to guide the ytoe plate into engagement with the toe holding member 44V in applying the boot to the ski and said recess 52 is desirable for structural reasons.
The toe holding member d4 comprises a flat base part V53 having longitudinally extending slots 5d toreceive screws 55 by which said toe holding member maybe adjustably secured tothe ski l5. Said toe holding member also includes an integral upright part having a rearwardly facing bullet shaped toe plate engaging member 57 formed therein and positioned to engage within the forwardly7 facing concave recess 5i in the toe plate 43. Preferably each lateral edge portion of the upright part 56 is bent to form therein a rearwardly facing trough shaped upright groove for the reception of the tip of a ski pole to be used in detaching the ski boot from the ski while the boot is on the foot.
In the use of this ski binding the heel plates and toe plates are permanently attached to the ski boots and the Y' heel blocks 2h and toe holding members 445 are permanently attached to the skis in the correct positions and at theV correct distance apart to properly t and engage with the 'chosen ski boots, depending on the size of the ski boots. The slots 54 in the base 53 of the toe holding member Vallow for some adjustment of this member without changing the location of the screws S5 on the skis. Also the Vheel plate engaging part 29, 3@ is long enough to allow lsome clearance between the upright heel plate member 39 and the heel block 2d. The heel holding member "27 vwith its bullet'shaped part 3i? is free to move rearwardly against the pressure of the spring 34 and the compression force of this spring can be adjusted.
To engage the ski boot'with the skiY the user places the foot on the ski with the rounded `concave toe plate'recess v'51 fitting over the protruding part S7 of the upright toe plate holding member and the rounded corner part 41 of the heel plate resting on the inclined surface 31 of the movable member 27. He then puts enough weighton the heel portion of the ski boot to force the heel downwardly onto the ski, in which position the member 30 will t into the concave rounded depression 40 of the heel plate and the boot and ski will be effectively bound together. Ihe spring 3d permits release of the toey binding means as well as the heel binding means in the event either is subjected to a strain great enough to compress but will'release before any of'thesestrains .becomes great Y Y Venough to injure theV legs or ankles'or feet Yof the user Vof the skis.
The user can easily and quickly detach the skis from the ski boots by inserting the metaltipj portion of a ski pole in one of the grooves S3 between the `toc holding member 44 and one of the wingsV 49 of the toe plate 43 and prying the` toe plate and toeholding mem- 'be.r-.apart. TheY backset of the wings@ and 'the clLued corner portions 51 of said wings facilitate the use ofthe 4 tip portion of a ski pole in this way. VFthis provides for quick Vand -easy release from the'skis without applying the hands directly to the ski bindings. Y
Fig. 1l shows a modified form of toe holding member including a movable mounted ball or bullet shaped part 6G adapted to cooperate with the toe plate d4 and seat Within the recess 51 thereof. The ball di? is secured to an arm 61. The arm 61 is pivotally supported by a pivot pin 62 with the arm extending in two opposite directions from said pin 62,. The pin 62 is mounted in the upper end portion of .an upwardly extending part 63 of an t. shaped bracket 64. V*The base part o5 of the bracket ed rests on and is rigidly secured to the ski i5. The part 63 is inclined toward the ski boot. When'the ball oil is engaged within the recess 51 the lower and shorterY end portion 0f the arm 6i will rest against the upright bracket part 63 and will function as a stop. Also the bail o@ will be below the level of the pivot pin 62, substantially as shown, and excessive upward lstrains on the toe of the boot will not ordinarily cause the device to release by Vpivoting about the pin 6?;'bu said will be released by excessive strains inthe saine man Aepreviot The user can release the boot from the toe binding means shown in Fig. ll by inserting the tip portion de of a ski pole, shown by broken lines, in an opening 67 in the curved upper end portion of the arm di and rotatively moving said arm 6i in the direction indicated by the arrow.
AThe foregoing description and accompanying drawings clearly disclose a preferred embodiment of this invention but it will be understood that changes in structure may be made within the scope and spirit of the appended claims.
'I claim:
1. In a strain releasable ski binding for securing a vski boot to a ski, the skiboot having a sole provided with a forwardly facing concave toe depression and a heel provided with a rearwardly facing concave heel depressioni; a rearwardly facing releasab'le toe holding mem- Vber of 'bullet Vnose shape rigidly attached to the ski andfipositioned to releasably engage within said toe depressiong a heel block attached to the ski 'in rearwardly spaced relation from the toe holding member, said heel block having a tubular bore which is inclined. down-A wardly from its rear toward its forward end; a heel holding member movable in said'tubular bore and having a protruding forward end portion of bullet nose kshape positioned to releasably engage within said vheel depression, said protruding forward end portion being iiattened on its top 'side providing an' inclined iiat surface Vfor engagement by the lheel part of the ski boot in the application of the boot to the ski; a longitudinal groove jin the wall of thebore of said heel block; a key rigid with said heel holding member slidably movable in said rgroove preventing rotary movement of the heel holding member in the tubular bore; a compression spring .urgingy said-heel holding member toward the ski boot; and a screw adjustably .supporting said spring.
2. .11n a .strain releasable .sld binding for Securing a ski boot to a ski, said boot having a heel plate rigid with `the heel thereof and Vprovided with avrearwardly v.facing concaverounded depression; Aa heel block attached -to Ythe ski, sai'djheel block having a tubular bore extending entirely therethrough and'inclined downwardlyfrom -jts reattori/ardita iorwardend; the rear end portion or vraid .here being ,internally ,threaded and said bore Lhavingan internal '.shoulder adjacent its fom/turd end portion protruding from theforward end of said tubular ..bore,.,said bullet4 shaped-.end portion, having a` attened .upperxsurfa'ce-en'gageble bytheltelel Vplate yon the boot, 'said'heel holding member' havingy a shoulder engaging the stop shoulder in said bore; a key member rigid with said heel holding member and operating in the longitudinal keyway in said bore preventing rotary movement of said heel holding member in said bore and maintaining said attened upper surface of said bullet shaped end portion always uppermost; a spring in said bore; and an adjustable spring abutment member threaded into said heel block adjustably supporting said spring, said heel plate being releasable from said plunger by upward and transverse strains on the heel portion of the ski boot.
3. In a strain releasable ski binding for securing a ski boot to a ski, said boot having an L shaped toe plate rigid with the front end of the sole thereof and provided with a medially positioned forwardly facing convex rounded depression and said ski boot having an L shaped heel plate rigid with the heel thereof and provided with a medially positioned rearwardly facing rounded depression, each of said L'shaped plates being rounded at the location of its right angle bend and the concave depression in each of said plates being unobstructed at least from below and from the two lateral sides; a rearwardly facing toe holding member rigidly secured to a ski and having a part of bullet nose shape positioned to engage within the recess in said toe plate; a heel block attached to the ski, said heel block having a tubular bore extending entirely therethrough and inclined downwardly from its rear end toward its forward end; the rear end portion of said bore being internally threaded and said bore having an internal shoulder adjacent its forward end and said bore having a longitudinally extending keyway in the wall thereof and the uppermost corner portion of said heel block being chamfered off providing a beveled surface positioned to be engaged by the rounded angle bend portion of said heel 6 plate in applying the boot to the ski; a heel holding member longitudinally movable in said tubular bore, said heel holding member having a bullet shaped end portion protruding from the forward end of said tubular bore, said bullet shaped end portion having a flattened inclined upper surface engageable by the rounded bend portion of the heel plate on the boot and said heel holding member having a shoulder engaging the stop shoulder in said bore limiting forward movement of said heel holding member; a transversely protruding key pin rigid with said heel holding member and operating in the longitudinal keyway in said bore preventing rotary movement of said heel holding member in said bore and maintaining said flattened upper surface of said bullet shaped end portion always uppermost; a compression spring in said bore urging said heel holding member forwardly; and a tubular adjustable spring abutment member threaded into said heel block receiving and adjustably supporting said spring, the boot being releasable from the ski by upward and transverse strains.
References Cited in the file of this patent UNITED STATES PATENTS 2,026,084 Elster Dec. 31, 1935 2,433,161 Schwarze Dec. 23, 1947 2,667,359 Goodman `Tan. 26, 1954 2,705,150 Hansen Mar. 29, 1955 FOREIGN PATENTS 55,685 France May 21, 1952 (Addition to 858,446)
501,555 Germany July 3, 1930 126,223 Switzerland June 1, 1928
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Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2868555A (en) * 1958-01-17 1959-01-13 Bonnie B Barnett Releasable ski binding
US2997309A (en) * 1959-05-06 1961-08-22 William J Van Natter Ski attachment to prevent loose skis from sliding down grade
US3095210A (en) * 1960-11-02 1963-06-25 Partridge S Models Ltd Ski bindings
US3151900A (en) * 1960-11-25 1964-10-06 Amerock Corp Catch
DE1182993B (en) * 1961-09-18 1964-12-03 Robert Lusser Dipl Ing Ski safety binding
DE1185518B (en) * 1959-04-18 1965-01-14 Martin Herzig Safety bindings
US3182163A (en) * 1961-05-02 1965-05-04 Baumer Herbert Switch mounting means
DE1204984B (en) * 1961-09-18 1965-11-11 Robert Lusser Dipl Ing Ski safety binding
US3241849A (en) * 1964-10-05 1966-03-22 Great Lakes Inst Safety release ski bindings
US3258274A (en) * 1964-11-23 1966-06-28 Beecher William Bryce Snap-on release ski binding
US3504922A (en) * 1968-04-09 1970-04-07 Philip K Wiley Tension adjustable releasable ski bindings
US3630538A (en) * 1969-10-17 1971-12-28 Trans World Ski Equip Inc Safety ski binding
US3869136A (en) * 1972-11-28 1975-03-04 Richard S Jackson Ski release binding
US3874685A (en) * 1972-06-15 1975-04-01 Besser Kurt Von Ski binding apparatus and method of mounting
US3931981A (en) * 1973-05-25 1976-01-13 Vereinigte Baubeschlagfabriken Gretsch & Co. Gmbh Adjustable jaw, especially front jaw, for ski bindings
US4023824A (en) * 1972-06-15 1977-05-17 Von Besser Kurt Ski binding apparatus
US4046400A (en) * 1976-05-12 1977-09-06 Viletto Felix A Ball ski binding
US4160556A (en) * 1976-02-23 1979-07-10 E. & U. Gertsch Ag Heel or sole holder for a sole plate of a safety ski binding and sole plate equipped with such holder
US4191395A (en) * 1976-09-03 1980-03-04 Etablissements Francois Salomon Et Fils Ski boot element
US4411118A (en) * 1980-04-30 1983-10-25 Claver Jorge C Panel set for the formation of athermanous walls

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH126223A (en) * 1928-02-03 1928-06-01 Friedrich Ammeter Ski binding.
DE501555C (en) * 1930-07-03 Wilhelm Koerner Fixing device for the detachable foot boards for snowshoe bindings
US2026084A (en) * 1932-04-04 1935-12-31 Elster Ernst Automatic snap fastening for skis
FR858446A (en) * 1943-10-28 1940-11-25 Ski binding device
US2433161A (en) * 1939-08-09 1947-12-23 Schwarze Paul Ski fastening
US2667359A (en) * 1950-11-27 1954-01-26 Donald A Goodman Retractable ball ski binding
US2705150A (en) * 1950-10-10 1955-03-29 Walter H Hansen Safety ski binding

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE501555C (en) * 1930-07-03 Wilhelm Koerner Fixing device for the detachable foot boards for snowshoe bindings
CH126223A (en) * 1928-02-03 1928-06-01 Friedrich Ammeter Ski binding.
US2026084A (en) * 1932-04-04 1935-12-31 Elster Ernst Automatic snap fastening for skis
US2433161A (en) * 1939-08-09 1947-12-23 Schwarze Paul Ski fastening
FR858446A (en) * 1943-10-28 1940-11-25 Ski binding device
FR55685E (en) * 1943-10-28 1952-09-03 Ski binding device
US2705150A (en) * 1950-10-10 1955-03-29 Walter H Hansen Safety ski binding
US2667359A (en) * 1950-11-27 1954-01-26 Donald A Goodman Retractable ball ski binding

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2868555A (en) * 1958-01-17 1959-01-13 Bonnie B Barnett Releasable ski binding
DE1185518B (en) * 1959-04-18 1965-01-14 Martin Herzig Safety bindings
US2997309A (en) * 1959-05-06 1961-08-22 William J Van Natter Ski attachment to prevent loose skis from sliding down grade
US3095210A (en) * 1960-11-02 1963-06-25 Partridge S Models Ltd Ski bindings
US3151900A (en) * 1960-11-25 1964-10-06 Amerock Corp Catch
US3182163A (en) * 1961-05-02 1965-05-04 Baumer Herbert Switch mounting means
DE1182993B (en) * 1961-09-18 1964-12-03 Robert Lusser Dipl Ing Ski safety binding
DE1204984B (en) * 1961-09-18 1965-11-11 Robert Lusser Dipl Ing Ski safety binding
US3241849A (en) * 1964-10-05 1966-03-22 Great Lakes Inst Safety release ski bindings
US3258274A (en) * 1964-11-23 1966-06-28 Beecher William Bryce Snap-on release ski binding
US3504922A (en) * 1968-04-09 1970-04-07 Philip K Wiley Tension adjustable releasable ski bindings
US3630538A (en) * 1969-10-17 1971-12-28 Trans World Ski Equip Inc Safety ski binding
US3874685A (en) * 1972-06-15 1975-04-01 Besser Kurt Von Ski binding apparatus and method of mounting
US4023824A (en) * 1972-06-15 1977-05-17 Von Besser Kurt Ski binding apparatus
US3869136A (en) * 1972-11-28 1975-03-04 Richard S Jackson Ski release binding
US3931981A (en) * 1973-05-25 1976-01-13 Vereinigte Baubeschlagfabriken Gretsch & Co. Gmbh Adjustable jaw, especially front jaw, for ski bindings
US4160556A (en) * 1976-02-23 1979-07-10 E. & U. Gertsch Ag Heel or sole holder for a sole plate of a safety ski binding and sole plate equipped with such holder
US4046400A (en) * 1976-05-12 1977-09-06 Viletto Felix A Ball ski binding
US4191395A (en) * 1976-09-03 1980-03-04 Etablissements Francois Salomon Et Fils Ski boot element
US4411118A (en) * 1980-04-30 1983-10-25 Claver Jorge C Panel set for the formation of athermanous walls

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