|Publication number||US2508318 A|
|Publication date||16 May 1950|
|Filing date||31 Jan 1949|
|Priority date||23 Dec 1948|
|Publication number||US 2508318 A, US 2508318A, US-A-2508318, US2508318 A, US2508318A|
|Original Assignee||George Wallach|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (2), Referenced by (76), Classifications (5)|
|External Links: USPTO, USPTO Assignment, Espacenet|
May 16, 1950 s. WALLACH RESILIENT HEEL FOR SHOES Filed Jan. 3]., 1949 N0 PRESSURE F34 I? T PPESSU/Pf FULL PRESSURE.
INVENTOR GEORGE WALLACH @W.
Patented May 16, 1956 RESILIENT HEEL FOR SHOES George Wallach, Chapman Camp, British Columbia, Canada Application January 31, 1949, Serial No. 73,765 In Canada December 23, 1948 1 Claim. 1
- The invention relates to a resilient heel for a shoe and is concerned with a heel structure in which a leaf spring is used to provide resilience.
Prior to the invention, the full amount of available resilience in a lea-f spring used to mount the tread surface of a heel structure has not been available to the wearer during the total time that the heel is in contact with the ground or other walking surface. This was because the heel was provided with a conventional flat tread surface which caused maximum leverage of the spring to occur at the beginning of a step when the rear corner of the heel contacted the ground and then suddenly, during completion of the step, as the fiat tread surface came into full contact with the ground, the flat tread surface caused the leverage to be reduced to practically zero so that the heel had no resilience during the remainder of the step.
According to the invention a heel structure is provided in which resilience is available to the wearer both at the beginning of the step and during its completion. The invention provides a heel structure having a leaf type spring to which is attached a curved tread surface extending from the rear of the heel and covering an area which is substantially to the rear of the section of the spring providin resilience. The tread surface of the heel is curved convexly from the rear to the front of the tread surface.
In the preferred form of a heel according to the invention, the leaf spring is formed with a middle resilient section sharply bent at a contained angle of less than 90 from the section which is anchored to the shoe, and the middle section is curved downwardly from the sharp bend until it adjoins the lower section to which the tread surface is attached. It is desirable that a resilient stop block be provided so that when the heel is being used on rough ground the flexing of the spring will be limited to an amount slightly greater than that which occurs during average use of the heel.
In taking a step with a heel according to the invention, the wearer applies pressure to the spring at its rearmost point and then, due to the curvature of the tread surface, the pressure is gradually and progressively transferred in a forward direction along the leaf spring so that the increased weight being applied to the heel is resiliently absorbed by the spring without any jarring to the wearer. Limitation of the area of the tread surface provides the important advantage that the heel is still resilient after full weight of the wearer is applied to it and has the further 5 advantage that the heel can provide a springlike action to the shoe as the weight is being transferred to the other foot for the next step.
The invention will be further described by reference to the attached drawings which illustrate certain embodiments of it, and in which Fig. 1 is a side elevation of part of a shoe showing in section a heel according to the invention,
Fig. 2 is a plan view of the heel shown in Figure 1,
Fig. 3 is a diagrammatic view showing a heel according to the invention during normal use as it makes initial contact with the ground without any substantial amount of pressure yet applied to the shoe,
Fig. 4 is a diagrammatic view similar to that in Figure 3 except that part pressure is being applied to the shoe, and
Fig. 5 is a diagrammatic view similar to Figure 3 except that full pressure is being applied to the shoe.
As shown in Figures 1 and 2, a heel according to the invention may comprise a leaf spring l0 having an upper section I I which is anchored to a shoe I2 by screws I3 and nuts I4 which fasten the upper part II to an anchor plate I5 which is above the sole l6 of the shoe l2. The leaf spring H! has a lower section I! spaced from the upper section I l and resiliently held by a curved middle section l8.
A rubber tread I9 is cemented to the under surface of the lower section l1 and extends about the middle section [8. The tread l9 has a convexly curved tread surface 20 which extends from the rear of the heel to a line 2| which is substantially behind the middle section I8, and at which line the thickness of the tread I9 is reduced so that its surface 22 from the line 2| to the front of the heel does not normally contact the ground or walking surface 24.
In elevation, the leaf spring Ill has the shape of a runner of a sleigh with the middle section l8 bent sharply away from the upper section II and curving downwardly and rearwardly until it adjoins the lower section II. The contained angle between the direction in which the middle section 18 adjoins the upper section II is less than so that the middle section is resilient to forces applied against the lower section H.
A stop block 23 is cemented to the underside of the upper section II at the rear of the heel and extends toward the lower section I! an amount which is so determined that the block 23 will act as a stop to the lower section I! when the lower section is pressed upwardly an amount greater than that which occurs during average use of the shoe [2. The space between the bottom of the block 23 and the lower section I! provides for upward movement of the lower section I! during normal walking.
Figures 3, 4 and 5 of the drawings illustrate three successive stages in the taking of a normal step with the shoe l2 and respectively illustrate,
the conditions of y no pressure, part pressure and full pressure on the shoe I2. In Figure the rearmost corner of the heel is making contact with the ground surface 24 and the sole lfivhas not yet reached the surface 24. The tread surface 20 curves upwardly away from ithezsurface 24 and the contact between the surface 2'4van'd the heel is at the rear only of the tread surface 20.
In Figure 4, part of the weight of the wearer has been transferred to the shoe [2, but the sole [6 is not yet in contactfiwith the surface 24. Due
to the pressure appliedztoetheheel the leaf sprin -ljfithas been forcediupwarclly andthereis aeconsiderableiportion of ithe;tread surface :2Q@in,con
tact-with theg-roundsurface 24 so that the lever s-ar m acting on .=the resilient. section 1.8 ,of ,the leaf spring iii is considerably reduced from that of the vno pressure conditionras shown in @Figure 3.
Thisireduetion in thei n th of the eve arm has taken -.;-p1a. e adua y dueothe c rvatur of the tread surface 20 and by the length of -..t.-h ve am bein reduced the ,r e n 0f ethe spr n 9 is g a a l ad u t a e rdine to the we be n ap i d t the h e 1 2- reduced so that an increase in pressure on the heel due to an unevenness in the walking surface 2 would cause the lower section I! to come into contact with the stop block 23 to prevent damage to the spring l6. However, since the tread surface 20 does not extend beneath the resilient section IS, the heel is still resilient although full ;pressure is "being applied to the shoe l2.
As pressure is removed from the heel during .the transfer of weight from one foot to the other when taking a further step, the leaf spring l0 urges the rear of the shoe upward and forward utilizing,the stored energy in the spring to gently impel the walker forward thereby reducing the fatigue of walking.
What} claim as my invention is:
A heel for a shoe comprising a plate of spring material of substantially the same width as the heel, said plate beingfclded latitudinally upon itself form .an upper section adapted to be anchored to ta t shoe and :a lower section :spaced REEEBQENCES CITED The following references are of record-in the file of this patent:
UNITED STATES PATENTS Number Name Date 357,062 Buch V Y V -Y Feb. 1, 1887 2,e47,603 Snyder .7. Aug. 24, 194B
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US357062 *||1 Feb 1887||Spring-heel for boots or shoes|
|US2447603 *||27 Sep 1946||24 Aug 1948||Snyder Ballard F||Shoe|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US2548308 *||6 Jan 1950||10 Apr 1951||Hensley Charles W||Spring heel construction|
|US3044191 *||2 Apr 1959||17 Jul 1962||Cayo Alven A||Springable shoe heel and attaching means|
|US3945136 *||10 Feb 1975||23 Mar 1976||Koo Bonny B||Spring lift for shoes|
|US4417408 *||21 Oct 1981||29 Nov 1983||Metro Robert D||Adjustable mechanically cushioned heel for a shoe|
|US4492046 *||1 Jun 1983||8 Jan 1985||Ghenz Kosova||Running shoe|
|US4638575 *||13 Jan 1986||27 Jan 1987||Illustrato Vito J||Spring heel for shoe and the like|
|US4771554 *||17 Apr 1987||20 Sep 1988||Foot-Joy, Inc.||Heel shoe construction|
|US4910885 *||19 Jan 1988||27 Mar 1990||Hsieh Jerry W||Shoe with resilient and convertible heel|
|US5138776 *||26 Dec 1990||18 Aug 1992||Shalom Levin||Sports shoe|
|US5159767 *||12 Aug 1991||3 Nov 1992||Allen Don T||Orthopedic stabilizer attachment|
|US5203095 *||18 Jun 1992||20 Apr 1993||Allen Don T||Orthopedic stabilizer attachment and shoe|
|US5279051 *||31 Jan 1992||18 Jan 1994||Ian Whatley||Footwear cushioning spring|
|US5381608 *||5 Jul 1990||17 Jan 1995||L.A. Gear, Inc.||Shoe heel spring and stabilizer|
|US5396718 *||9 Aug 1993||14 Mar 1995||Schuler; Lawrence J.||Adjustable internal energy return system for shoes|
|US5435079 *||20 Dec 1993||25 Jul 1995||Gallegos; Alvaro Z.||Spring athletic shoe|
|US5617651 *||16 May 1995||8 Apr 1997||Heil- Und Hilfsmittel Vertriebs Gmbh||Forefoot relieving shoe, more particularly for postoperative treatment|
|US5636456 *||30 Dec 1994||10 Jun 1997||Allen; Don T.||Orthopedic apparatus and footwear for redistributing weight on foot|
|US5940994 *||15 Aug 1997||24 Aug 1999||Allen; Don T.||Orthopedic apparatus and footwear for redistributing weight on foot|
|US6449878 *||10 Mar 2000||17 Sep 2002||Robert M. Lyden||Article of footwear having a spring element and selectively removable components|
|US6601042||17 May 2000||29 Jul 2003||Robert M. Lyden||Customized article of footwear and method of conducting retail and internet business|
|US6662471 *||18 Oct 1999||16 Dec 2003||Akeva, L.L.C.||Athletic shoe with improved heel structure|
|US6962009||30 Jun 2004||8 Nov 2005||Akeva L.L.C.||Bottom surface configuration for athletic shoe|
|US6966129||30 Jun 2004||22 Nov 2005||Akeva L.L.C.||Cushioning for athletic shoe|
|US6966130||30 Jun 2004||22 Nov 2005||Akeva L.L.C.||Plate for athletic shoe|
|US6968635||30 Jun 2004||29 Nov 2005||Akeva L.L.C.||Athletic shoe bottom|
|US6996923||30 Jun 2004||14 Feb 2006||Akeva L.L.C.||Shock absorbing athletic shoe|
|US6996924||30 Jun 2004||14 Feb 2006||Akeva L.L.C.||Rear sole structure for athletic shoe|
|US7016867||21 May 2002||21 Mar 2006||Lyden Robert M||Method of conducting business including making and selling a custom article of footwear|
|US7040040||30 Jun 2004||9 May 2006||Akeva L.L.C.||Midsole for athletic shoe|
|US7040041||30 Jun 2004||9 May 2006||Akeva L.L.C.||Athletic shoe with plate|
|US7043857||30 Jun 2004||16 May 2006||Akeva L.L.C.||Athletic shoe having cushioning|
|US7069671||30 Jun 2004||4 Jul 2006||Akeva L.L.C.||Arch bridge for athletic shoe|
|US7076892||30 Jun 2004||18 Jul 2006||Akeva L.L.C.||Shock absorbent athletic shoe|
|US7082700||3 Aug 2005||1 Aug 2006||Akeva L.L.C.||Athletic shoe with inclined wall configuration|
|US7089689||3 Aug 2005||15 Aug 2006||Akeva L.L.C.||Athletic shoe with inclined wall configuration and non-ground-engaging member|
|US7107235||24 Oct 2002||12 Sep 2006||Lyden Robert M||Method of conducting business including making and selling a custom article of footwear|
|US7114269||28 May 2003||3 Oct 2006||Akeva L.L.C.||Athletic shoe with improved sole|
|US7127835||11 Dec 2003||31 Oct 2006||Akeva L.L.C.||Athletic shoe with improved heel structure|
|US7155843||3 Aug 2005||2 Jan 2007||Akeva, L.L.C.||Athletic shoe with visible arch bridge|
|US7380350||30 Jun 2004||3 Jun 2008||Akeva L.L.C.||Athletic shoe with bottom opening|
|US7536809||28 Dec 2006||26 May 2009||Akeva L.L.C.||Athletic shoe with visible arch bridge|
|US7540099||30 Jun 2004||2 Jun 2009||Akeva L.L.C.||Heel support for athletic shoe|
|US7596888||12 Dec 2008||6 Oct 2009||Akeva L.L.C.||Shoe with flexible plate|
|US7752775||11 Sep 2006||13 Jul 2010||Lyden Robert M||Footwear with removable lasting board and cleats|
|US7770306||23 Aug 2007||10 Aug 2010||Lyden Robert M||Custom article of footwear|
|US8209883||8 Jul 2010||3 Jul 2012||Robert Michael Lyden||Custom article of footwear and method of making the same|
|US8539697 *||7 Oct 2011||24 Sep 2013||Tbl Licensing Llc||Suspension heel|
|US9095190||14 Mar 2013||4 Aug 2015||Nike, Inc.||Sole structure configured to allow relative heel/forefoot motion|
|US9241533||21 Feb 2013||26 Jan 2016||Nike, Inc.||Footwear including heel spring support members|
|US20020133977 *||19 Mar 2002||26 Sep 2002||Kung-Sheng Pan||Shoe having an elastic heel|
|US20030192203 *||28 May 2003||16 Oct 2003||Akeva, Llc||Athletic shoe with improved sole|
|US20030208927 *||18 Oct 1999||13 Nov 2003||David F. Meschan||Athletic shoe with improved heel structure|
|US20040123496 *||11 Dec 2003||1 Jul 2004||Akeva, L.L.C.||Athletic shoe with improved heel structure|
|US20040231192 *||30 Jun 2004||25 Nov 2004||Meschan David F.||Plate for athletic shoe|
|US20040231193 *||30 Jun 2004||25 Nov 2004||Meschan David F.||Shock absorbing athletic shoe|
|US20040231194 *||30 Jun 2004||25 Nov 2004||Meschan David F.||Athletic shoe with plate|
|US20040231195 *||30 Jun 2004||25 Nov 2004||Meschan David F.||Midsole for athletic shoe|
|US20040231198 *||30 Jun 2004||25 Nov 2004||Meschan David F.||Cushioning for athletic shoe|
|US20040231199 *||30 Jun 2004||25 Nov 2004||Meschan David F.||Arch bridge for athletic shoe|
|US20040237345 *||30 Jun 2004||2 Dec 2004||Meschan David F.||Rear sole structure for athletic shoe|
|US20040237347 *||30 Jun 2004||2 Dec 2004||Meschan David F.||Bottom surface configuration for athletic shoe|
|US20040244222 *||30 Jun 2004||9 Dec 2004||Meschan David F.||Shock absorbent athletic shoe|
|US20050166422 *||4 Feb 2004||4 Aug 2005||Puma Aktiengesellschaft Rudolf Dassler Sport||Shoe with an articulated spring-loaded outsole|
|US20050262730 *||3 Aug 2005||1 Dec 2005||Akeva, L.L.C.||Athletic shoe with inclined wall configuration|
|US20050262731 *||3 Aug 2005||1 Dec 2005||Akeva, L.L.C.||Athletic shoe with visible arch bridge|
|US20050262732 *||3 Aug 2005||1 Dec 2005||Akeva, L.L.C.||Athletic shoe with inclined wall configuration and non-ground-engaging member|
|US20060117602 *||30 Jun 2004||8 Jun 2006||Meschan David F||Athletic shoe with bottom opening|
|US20100095553 *||18 Dec 2009||22 Apr 2010||Alexander Elnekaveh||Resilient sports shoe|
|US20100287789 *||18 Nov 2010||Xiao Lin Mo||Cushioning mechanism for shoe midsole|
|US20110113646 *||19 May 2011||Srl, Llc||Articles of Footwear|
|US20110113649 *||18 Nov 2009||19 May 2011||Srl, Llc||Articles of Footwear|
|US20110225842 *||22 Sep 2011||Lu Kuo-Ming||Elastic Heel of The High-Heeled Shoes|
|US20110314705 *||23 Jun 2010||29 Dec 2011||Lu Kuo-Ming||Elastic shoe heel structure of a shoe|
|US20120085002 *||12 Apr 2012||TBL Licensing LLC, a Delaware limited liability company||Suspension heel|
|US20120192456 *||2 Aug 2012||Scolari Nathan A||Shoe With Resilient Heel|
|USD659963||2 Mar 2011||22 May 2012||SR Holdings, LLC||Pair of footwear articles|
|International Classification||A43B21/30, A43B21/00|