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Publication numberUS3387852 A
Publication typeGrant
Publication date11 Jun 1968
Filing date25 Jul 1966
Priority date25 Jul 1966
Publication numberUS 3387852 A, US 3387852A, US-A-3387852, US3387852 A, US3387852A
InventorsSarro Emma De
Original AssigneeSarro Emma De
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Detachable and removable roller skates
US 3387852 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

June 11, 1968 5, DE SARRO 3,387,852

DETACHABLE AND REMOVABLE ROLLER SKATES Filed July 25, 1966 v 5 Sheets-Sheet 1 INVENTOR June 11, 1968 5, DE SARRO 3,387,852


p 7 77 7 EMMA 05 54 530 June 11, 1968 E. DE SARRO 3,387,852

DETACHABLE AND REMOVABLE ROLLER SKATES Filed July 25, 1966 5 Sheets-Sheet 3 United States Patent ,387,852 DETACHABLE AND REMOVABLE ROLLER SKATES Emma De Sarro, 620 Palmetto St., West Palm Beach, Fla. 33405 Filed July 25, 1966, Ser. No. 567,664 Claims. (Cl. 28011.2)

ABSTRACT OF THE DISCLOSURE Roller skates which have, a single longitudinal line of wheels mounted on special frames permitting convenient removal of the wheels from the shoe and adjustment of the frames to fit shoes of different dimensions.

This invention relates generally to roller skates. More specifically, it relates to combination shoes and skates.

A principal object of the present invention is to provide an improved skate design which gives a new swift free feeling of performance.

Another object is to provide a skate wherein the wheels are arranged upon the frame for improved speed.

Yet another object is to provide a roller skate wherein the wheels are arranged in a singular longitudinal central row, thereby eliminating the awkward and bulky feel of hinderous heavy broadness laterally, such as is present in ordinary conventional skates wherein wheels are arranged in pairs along a plurality of lateral axis.

Yet another object is to provide a roller skate of strapless type which is detachable from the shoe of a wearer.

Yet another object is to provide a roller skate of detachable strapless type which is adjustable longitudinally for being fitted to various sizes of shoes.

Other objects are to provide a roller skate which is simple in design, inexpensive to manufacture, rugged in construction, easy to use and efiicient in operation.

These and other objects will be readily apparent upon a study of the following specification and the accompanying drawings wherein:

FIGURE 1 is a front elevation view of a roller skate incorporating the present invention;

FIGURE 2 is a side elevation view thereof;

FIGURE 3 is an exploded perspective view of the skate structure;

FIGURE 4 is an enlarged cross-sectional view taken on line 4-4 of FIGURE 2;

FIGURE 5 is a side elevation view of a modified form of the present invention;

FIGURE 6 is an exploded perspective view of a part of the mechanism illustrated in FIGURE 5;

FIGURE 7 is an enlarged cross-sectional view of the pivoting mechanism shown assembled;

FIGURE 8 is a side elevation view of a roller skate of modified design;

FIGURE 9 is a side elevation view of a detachable type of roller skate, and

FIGURE 10 is a bottom plan view showing an expandable roller skate.

FIGURE 11 is a front view of a keyless clamp used ii the construction shown in FIGURE 9;

FIGURE 12 is a side elevation view of a further modified form of the invention;

FIGURE 13 is a cross sectional view taken on the line 13-13 of FIGURE 12;

FIGURE 14 is a side elevation view of a detachable skate employing the elements of the invention illustrated in FIGURE 12,

FIGURE 15 is a perspective view of a detachable monofile wheeled roller skate employing the invention, and

FIGURE 16 is a perspective view of one of the wheels.


Referring now to the drawings in detail and more specifically to FIGURES 1 through 4, the numenal 20 represents a roller skate according to the present inven' tion, wherein there is a shoe 21 having a sole 22 and heel 23 which are secured to a skate structure 24.

The skate structure 24 is comprised of a plurality of longitudinally extending frames which form a framework 25 supported upon a plunality of wheels 26.

The framework 25 is comprised of a pair of side frames 27 and 28 and a central frame 29 therebetween. Each side frame has a horizontal panel 30 and a vertical panel 31, Openings 32 in the panel 30 are provided to receive rivets 33 therethrough for securing the frame to the underside of the shoe sole and heel. The central frame is of U-shape-d configuration having a pair of vertical, parallel spaced apart panels 34 and .a connecting horizontal panel 35 intermediate the panels 34. The horizontal panel 35 is also provided with openings 32 for receiving rivets 33 for securement to the shoe sole 22 and heel 23.

The vertical panels 31 and 34 are of scalloped configuration; each scallop of which has an opening 36 therethrough for receiving a bolt 37 therethrough which forms a shaft for each wheel 26. It shall be noted that the openings 36 on the side frames and central frame are in alignment so that the bolt 37 is supported in all of the frames. A washer 38 is mounted on the bolt a-djacent each side of the wheel and the bolt is then secured to the framework by a nut 39 on the bolt end.

A toe guard or stopper 40 made of resilient rubber has a slot 41 for rweiving therein an upstanding lug 42 integrally formed on the front end of the central frame, thereby providing a bumper guard for the roller skate.

In the modified skate 50 shown in FIGURES 5, 6 and 7, the framework 51 includes a turntable assembly 52 at the forward end for purpose of allowing the skates to pirouette on his toes in doing acrobatics, dancing or other display, while on skates. The turntable assembly 52 comprises an angularily upward turned lug 53 integrally formed on the framework. An upper race 54 is secured to the lower side of the lug 'by a screw 54; the race having an inwardly turned flange 55 for retaining an outwardly turned flange 56 of .a lower race 57. A plurality of spherical balls 58 are located between the races to provide a relatively functionless bearing. A rubber pad 59 is secured by a screw 60 on the underside of the lower race so as to give traction upon any surface where pivoting is desired by the skater.

In FIGURE 8, the vertical panels 61 of the framework 62 are not scalloped but have a straight lower edge 63.

In FIGURES 9 and 10*, a detachable, expandable, strapless, roller skate is shown which includes a framework 71 comprised of a longitudinally adjustable heel portion 72 and toe portion 73. The toe portion has a rearward extending tongue 74, the side edges of which are notched as shown at 75. The rear portion has flanges 76 between which the tongue extends. Slide bolts 77 mounted in each flange 76 are normally drawn toward each other and into the notches by a spring 78.

A toe keyless clamp 79awith spring 7% and heel clip 80 are formed on the upper side of the skate 70 between which a shoe may be inserted. If preferred, a strap 81 may be additionally provided on the heel clip to further secure the shoe to the skate. The third wheel from heel eliminated for finger space to tightened winged nut under skate, as shown in FIGURE 9.

In operative use when adjusting the skate 70 on a shoe, the slide bolts 77 are pulled laterally outward to clear the teeth 82 between notches 75. A pair of springs 83 then normally draw the toe and heel portions together, thus adjusting the skate to the shoe. The slide bolts are then released and become locked in the notches 75 nearest thereto. The roller skate is now ready for use.

In FIGURE 12 a modified form of the present invention is shown wherein the shoe 85 includes a sole 86 with heel 87 secured to a skate 88. In this form of the invention a monofile shoe skate is formed wherein a row of narrow, small wheels 89 are supported centrally under the shoe within a U-shaped support frame 90. As shown in FIGURE 13, the wheels 89 are relatively thin so that in combination along a linear plane the wheels imitate the service of a blade on a pair of ice skates. Thus the present form of the invention comprises a combination roller and ice skate which requires no adjustment or manual conversion to change the use of the skate from roller skating to ice skating or vise versa.

In FIGURE 14 the same inventive principle is applied to a detachable monofile skate 91 wherein like then wheels 92 are secured in a single row to a frame 93.

In FIGURE a further modified form of the invention is shown wherein the detachable monofile skate 94 has a frame 95 and forward plate 96 of which is slidably adjustable longitudinally relative to a rear plate 97 thereof. While the wheels thereof may be of thin design, as above described, they may otherwise be, as illustrated in FIGURE 16 wherein the wheel 98 has a width of /2 inch and a diameter of the same /2 inch dimension. The Wheel is thus of barrel configuration. In the skate shown in FIGURE 15, a spring 99 is provided for return toward each other of the plates 96 and 97.

It should be noted that in the keyless clamp 79a, illustrated in FIGURE 11, that the spring 7% will likewise draw the clamps 100 toward each other so that the clamps will clasp the sole edges 101 of the shoe.

The novel features and the operation of this device will be apparent from the foregoing description. While the device has been shown and the structure described in detail, it is obvious that this is not to be considered limited to the exact form disclosed, and that changes may be made therein within the scope and the spirit of the invention.

Having thus set forth and disclosed the nature of this invention, what is claimed is:

1. In a roller skate, the combination of a framework, means for securing said framework to the underside of a sole and heel of a shoe, a plurality of wheels mounted on said framework and said wheels being arranged longitudinally in a central singular row, wherein said framework comprises a pair of side frames of angle cross-section and a central frame of U-shaped cross-section, each of said side frames having a horizontal panel, said U-shaped central frame having a rectangular horizontal wall and a vertical panel adjacent and coextensive of each of said vertical panels of said side frame, aligned openings in adjacent vertical panels of the said frames, bolts extending through said openings for supporting said wheels and means for attaching the shoe sole to the framework through and under the shoe sole thereby obscuring the connection from external view.

2. The combination as set forth in claim 1, wherein said framework has an upstanding lug at the forward end thereof, and a rubber bumper fitted over said lug, and wherein the horizontal, panels and walls are coplanar conforming generally to the shape of the shoe sole.

3. The combination as set forth in claim 1, wherein said framework has a diagonally upward extending lug at the forward end and a turntable secured under said lug, said turntable comprising a pair of spacers with balls therebetween to allow pivoting of a skater on his toes.

4. In a roller skate, the combination of a framework, means for securing said framework to the underside of a sole and heel of a shoe, a plurality of wheels mounted on said framework and said wheels'being arranged in a longitudinal singular row, wherein said framework has a toe portion and a heel portion adjustable relative to each other, a rearward tongue on said toe portion, a plurality of teeth and intermittent notches along each side edge of said tongue, a pair of flanges on said heel portion, said tongue being slidable between said flanges, a slide bolt in each said flange normally drawn together by a spring for engaging said slide bolts in said notches, and a pair of second springs secured at opposite ends to said toe and heel portions to normally draw said portions together when said slide bolts are disengaged from said notches. 5. In a roller skate as set forth in claim 4, wherein said wheels are of relatively thin configuration, small. diameter and close together whereby said wheels simulate an ice skating blade.

References Cited UNITED STATES PATENTS 1,835,446 12/1931 Tracey 280--11.22 2,048,916 7/1936 Bentzlin 28011.22 2,168,820 8/1939 Edstrom 28011.23 2,551,122 5/1951 Hayner 280-112 3,202,435 8/ 1965 Goodman.

FOREIGN PATENTS 1,125,607 7/1956 France.

400,436 10/ 1933 Great Britain.

BENJAMIN HERSH, Primary Examiner.

MILTON L. SMITH, Examiner.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1835446 *9 Oct 19308 Dec 1931James TraceyRoller skate
US2048916 *25 May 193528 Jul 1936Frank A BentzlinRoller skate
US2168820 *14 May 19388 Aug 1939Edstrom Willard HRoller skate
US2551122 *24 Mar 19491 May 1951De Eldon E HaynerStop device for roller skates
US3202435 *21 Jul 196424 Aug 1965Sekur All CorpMolded plastic skates
FR1125607A * Title not available
GB400436A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3885804 *13 Jun 197327 May 1975Wane Rider IncRoller skate
US3999772 *24 Jul 197528 Dec 1976Brennan William JRoller skate
US4058324 *30 Jan 197615 Nov 1977Lucien DallaireRoller skate with maneuverability adjustments
US4076263 *20 Nov 197528 Feb 1978Rand Robert KBall skate
US5193827 *14 Apr 199216 Mar 1993O.S. Designs, Inc.Convertible in-line roller skates
US5280931 *20 Nov 199225 Jan 1994Thistle Sports Enterprises, Inc.Roller brake
US5295701 *9 Apr 199322 Mar 1994Playskool, Inc.In line roller skate assembly having training wheels
US5314199 *12 Mar 199324 May 1994O.S. Designs, Inc.Convertible in-line roller skates
US5340132 *24 Feb 199323 Aug 1994Rollerblade, Inc.Torsionally stiffened in-line roller skate frame with dual side walls
US5437466 *19 Jul 19931 Aug 1995K-2 CorporationIn-line roller skate
US5452907 *13 Sep 199326 Sep 1995K-2 CorporationSkate with adjustable base and frame
US5549310 *10 Jan 199427 Aug 1996K-2 CorporationIn-line roller skate with improved frame assembly
US5642894 *22 Mar 19961 Jul 1997Sanabria; GasparKit for adding wheels to an in-line roller skate
US5775706 *6 Jul 19957 Jul 1998Nordica S.P.A.Skate with in-line wheels
US5823544 *6 Feb 199720 Oct 1998Reebok International Ltd.Anti-abrasion and rockering system for an in-line skate
US5848796 *3 Mar 199715 Dec 1998K-2 CorporationIn-line roller skate
US5876044 *4 Mar 19972 Mar 1999Yin; Chao-HungFrame structure for an in line roller skate
US6047972 *25 Nov 199711 Apr 2000Rudolph; Robert KIn-line skate and method of forming same
US6139030 *23 Aug 199931 Oct 2000K-2 CorporationIn-line roller skate
US6152459 *9 Dec 199828 Nov 2000K-2 CorporationIn-line roller skate
US6173975 *19 May 199516 Jan 2001Ernest E. BrandnerV-line skate with expandable axle
US617649719 Oct 199923 Jan 2001Salomon S.A.In-line skate frame with independent lateral flanges
US621703729 Jun 199817 Apr 2001Richard S. GasterDetachable in-line skate conversion apparatus
US62541101 Jun 20003 Jul 2001K-2 CorporationIn-line roller skate
US62799224 Jun 199928 Aug 2001Richard S. GasterIn-line skate wheel disabling apparatus
US63678188 Jun 20019 Apr 2002K-2 CorporationIn-line roller skate
US6394469 *15 Jul 199828 May 2002Salomon S.A.In-line roller skate provided with an internal support for a user's foot
US6416081 *3 Sep 19999 Jul 2002K-2 CorporationIn-line skate frame protector
US644698224 Apr 200010 Sep 2002Richard S. GasterIn-line skate conversion apparatus
US64469832 Oct 200010 Sep 2002Richard S. GasterIn-line skate wheel disabling apparatus
US6488289 *9 Mar 20013 Dec 2002Chun-Chung HsiaoBi-functional roller skate
US652728319 Oct 19994 Mar 2003Salomon S.A.In-line skate frame equipped with an anti-torsion bar
US655078928 Mar 200122 Apr 2003Richard S. GasterDetachable in-line skate conversion apparatus
US659888830 Sep 200229 Jul 2003K-2 CorporationIn-line roller skate
US674920328 Apr 200315 Jun 2004K-2 CorporationIn-line roller skate
US695536114 Aug 200318 Oct 2005Salomon S.A.Gliding sports equipment, such as a skate, a frame for such sports equipment, and a line of such frames
US6957830 *8 Jul 200225 Oct 2005K-2 CorporationIn-line skate frame protector
US717518728 Jul 200313 Feb 2007Lyden Robert MWheeled skate with step-in binding and brakes
US746494419 Oct 200616 Dec 2008Lyden Robert MWheeled skate
US20030136076 *22 Jan 200224 Jul 2003Black T. EdwardPerdurable chassis with intrinsic structural integrity, integral wrenching for one end of the motivating disc shaft's extremity, a mounting plane for the device's activator and braking device mounting capabilities
US20040021278 *28 Jul 20035 Feb 2004Lyden Robert M.Wheeled skate with step-in binding and brakes
US20040056436 *14 Aug 200325 Mar 2004Salomon S.A.Gliding sports equipment, such as a skate, a frame for such sports equipment, and a line of such frames
US20040207164 *7 May 200421 Oct 2004K-2 CorporationIn-line roller skate
US20060131823 *9 Feb 200622 Jun 2006Pc-Vane Sportartikel GmbhModular in-line skate frame assembly
US20070090613 *19 Oct 200626 Apr 2007Lyden Robert MWheeled skate
USRE35493 *3 May 199515 Apr 1997Thistle Sports Enterprises, Inc.Roller brake
DE29505983U1 *6 Apr 19958 Aug 1996Sunshine Holding Verwaltungs GEinspuriger Rollschuh
EP1674139A1 *21 Dec 200428 Jun 2006PC-Vane Sportartikel GMBHModular in-line skate frame assembly
U.S. Classification280/11.209, 280/11.26, D21/764, 280/11.221
International ClassificationA63C17/06
Cooperative ClassificationA63C17/06
European ClassificationA63C17/06