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Publication numberUS3419974 A
Publication typeGrant
Publication dateJan 7, 1969
Filing dateMar 14, 1966
Priority dateMar 14, 1966
Publication numberUS 3419974 A, US 3419974A, US-A-3419974, US3419974 A, US3419974A
InventorsRobert B Lange
Original AssigneeRobert B. Lange
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Ski boot
US 3419974 A
Abstract  available in
Images(2)
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Claims  available in
Description  (OCR text may contain errors)

R. B. LANGE Jam 7, 1969 SKI BOOT Sheet I of? Filed March 14, 1966 Fig.

Robert B. Lange ml? @wvw I ATTORNEYS Jan. I, 1969 R. B. LANGE 3,419,974

I SKI BOOT Filed March 14', 1966 Sheet 2 or 2 INVENTOR I Robert B. Lange ATTORNEY-j United States Patent Claims ABSTRACT OF THE DISCLOSURE A plastic ski boot having an outer shell of a thickness great enough to deform the interior thereof while maintaining theexterior dimension stable and the method of performing this operation.

This invention relates to a plastic ski boot and more particularly to a plastic ski boot wherein the parts are constructed and arranged so that maximum perfection in fitting is obtained.

Plastic ski boots are now well known to the ski manufacturing arts. Refer to my co-pending application S.N. 441,398. The advantages and disadvantages of plastic ski boots are many and varied with the advantages more than outweighing the disadvantages. Some of the principal advantages are their resistance to water, their rigidity during skiing, their resistance to scuffing from ice and ski edges, and the ease with which they can be manufactured of a variety of colors.

In the manufacture of boots of the plastic type the molds and lasts constitute a major expense. Additionally, perfection of fit is of major importance. The ski boot is the principal connection between the ski and the skier and for this reason control is established and is limited by the efiiciency with which the boot operates as a connection between the leg and the ski.

Many skiers develop bone spurs and other foot imperfections as a result of the constant pressures which are applied to the foot as a result of skiing. One :of the principal objectives of this invention is to provide a ski boot which can be manufactured in standard sizes but which can be fit to perfection at the retail store. In general, this objective is accomplished by making a plastic ski boot shell having thicker gauge plastic at those portions of the boot where bone spurs are likely to occur and through the use of heated instruments, depressions can be formed in the plastic shell without seriously effecting boot strength.

Another objective of this invention is to provide a plasticski boot which has a hinging capability without the necessity of a two-piece unit.

Another objective of this invention is to provide an inner liner for a plastic ski boot which forms pockets for removable sponge rubber pads for the additional comfort of the skier.

A still further objective of this invention is to provide the above-mentioned liner with Velco attachments so that the sponge rubber padding is maintained in its proper position by maintaining the proper positioning between the liner and the boot.

These and other objectives of the invention will become more apparent when the following description is read in light of the attached drawings in which:

FIG. 1 is an exploded perspective of one form of the invention;

FIG. 2 is the assembling of the boot shown in FIG- URE 1;

FIG. 3 is an exploded side elevation of a further embodiment of the invention; and

FIG. 4 is a schematic showing how the depressions can be formed in the boot shell.

Referring now to the drawings where like numerals indicate like parts, the numeral 10 indicates the boot of this invention. The outer shell is indicated by the numeral 12. The shell is comprised of an integral unit having a sole portion 14, an upper 16, an ankle gaiter portion 18 and having the normal foot opening defined by flaps 20 and 22. For purposes of clarity, the buckles and other fasteners normally used with boots have not been shown in FIGURE 1.

The outer 12 is cast as one unit. That portion connecting the upper 16 and the ankle gaiter portion 18 is narrowed at 24 and 26. These narrowed portions provide a limited hinging action between the two elements. On either side of the narrowed portion the boot is formed with accordion-like bellows deformations 28 and 30 which aid and limit the hinging movement between 16 and 18. Note that a plurality of Velco female elements 32 are secured to the interior of the boot shell.

The inner liner of the 'boot is indicated by the numeral 40. This liner is made of Corfam and is comprised of three basic elements; a foot receiving portion 42, an ankle portion 44 and a tongue 43. The tongue of course closes the opening defined by flaps 20 and 22. Ankle portion 44 has a return flap which extends downwardly as shown by the numeral 48 to define pockets around the ankle. The pockets are for the reception of foam rubber padding elements 50. The inner liner 40 is inserted within the interior of the boot outer shell 12 and isfirmly secured thereto by way of an epoxy glue. The remaining element of the boot is an innersole 48 of conventional construction.

As previously stated, one of the principal features of this invention is the use of a thick gauge plastic at certain places in the outer shell and in particular at those areas where bone spurs are likely to occur. Specifically the thick gauge is used at that area opposite the ball of the boot indicated at 62 and at that area opposite the little toe generally designated by the numeral 64. Likewise, the thickened plastic is used in ankle section of the boot opposite the protruding ankle bone. The area 64 is shown in cross-section in FIG. 4. Note how the area of the outer shell nearest the small toe is thickened as at 66. In the event a depression must be made in this area, heated instrument 68 is applied to the interior of the thermosetting material and a depression of desired depth is formed by the instrument. No change in the 'outer configuration of the boot since the mold 70 will hold that portion rigid. Through the use of this method, sales personnel at the retail outlet of the boots can manufacture and alter a boot to exactly fit the person buying the boots.

The embodiment in FIGURE 3 is constructed similarly to that of the embodiment shown in 1, 2 and 4 with thickened portions of the plastic judiciously -selected at those boot surfaces adjacent areas of the foot likely to cause trouble. In this embodiment, however, the outer shell is cast in three different molds, namely, 76, a gaiter portion 78 and a bellowed section 80. The bellowed section 80 is made with flanged portions 82 and 84 which are respectively secured to those portions of the gaiter and lower shell indicated by the and 92. The member 80 can be manufactured of polypropylene. By way of a pivot stud through the apertures 94 and 96 a pivot action is obtained and is limited and controlled by the polyproplene hinge.

As mentioned previously, the molds for such plastic boots constitute a major cost. Likewise, since accurate fitting of ski boots is of utmost importance, the retailers of such equipment heretofore were required to maintain a substantial stock of inventory. By utilizing the structure and methods of this invention the number of molds necessary can be reduced as well as the amount of inventory any one retailer must maintain. This can be accomthickness suflicient to withstand such deformations. The

outer dimensions of the boot of course need not be changed.

In a general manner, while there has been disclosed in the above description, what are deemed to be the most practical and efiicient embodiments and methods of the invention, it should be well understood that the inven tion is not limited to such embodiments and methods as as there might be changes made in the arrangement, disposition, and form of the parts and methods Without departing from the principle of the present invention as comprehended within the scope of the accompanying claims.

What is claimed is:

1. A plastic ski boot comprising a thermoplastic outer shell of substantial thickness, said shell comprising an elongated foot-receiving portion, a sole and an upper member integral with said sole, a gaiter, means pivotally connecting said upper and said gaiter, said outer shell having portions of greater thickness than adjacent portions thereof whereby said portions of greater thickness can be deformed without weakening the outer shell, a liner portion insertable in said shell, said liner having a pocket formed therein, and a plurality of resilient pads removably secured in said pocket.

2. The ski boot recited in claim 1 wherein a plurality of fastening devices are mounted to the interior of said shell and a like number of mating fastening devices are mounted on the exterior of said liner opposing said firstmentioned fastening devices, and means causing said fastening devices to removably grip one another.

3. The method of sizing a plastic ski boot to the foot of a wearer comprising the steps of selecting a boot approximating the size of the foot of a wearer, comparing the foot dimensions of said wearer with the interior dimensions of said boot, applying a heated form to the interior of said boot, while maintaining the exterior dimensions of said boot stable, at locations Where a greater interior space is required and exerting an outwardly directed pressure against said area until a depression is formed of an amplitude desired as a result of said comparison.

4. The method of sizing a plastic ski boot comprising the steps of permanently deforming the interior dimensions of the boot with heat and pressure while maintaining the exterior dimensions of the boot stable.

5. A plastic ski boot comprising a thermoplastic outer shell of substantial thickness, said shell comprising an elongated foot-receiving portion, a sole and an upper member integral with said sole, a gaiter, means pivotally connecting said gaiter with respect to said upper and said sole, said outer shell having portions of greater thickness than adjacent portions thereof whereby said portions of greater thickness can be deformed without weakening the outer shell, a liner portion insertable in said shell, said liner having a pocket formed therein, and a plurality of resilient pads removably secured in said pocket.

References Cited UNITED STATES PATENTS 1,904,787 4/1933 Hitzler et al. 12142 2,279,304 4/ 1942 Curtis et al 12-142 2,531,763 11/1950 Andre 362.5 3,237,319 3/1966 Hanson 36-2.5 3,239,952 3/1966 Lange ct a1. 36-2.5

PATRICK D. LAWSON, Primary Examiner.

US. Cl. X.R.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1904787 *Nov 4, 1930Apr 18, 1933Josef HitzlerDevice for shrinking leather
US2279304 *Oct 1, 1940Apr 14, 1942De Curtis FrankMethod of and apparatus for reshaping shoes
US2531763 *Aug 31, 1949Nov 28, 1950Jules E AndreSki boot
US3237319 *Jun 22, 1964Mar 1, 1966Hanson Alden WadeSki boots having a thixotropic material encircling the ankle portion thereof
US3239952 *Feb 24, 1965Mar 15, 1966Philo B LangeSki boot
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3521385 *May 2, 1968Jul 21, 1970Dalebout Melvin WSki boot
US3535800 *Nov 7, 1968Oct 27, 1970Rieker & CoSki boot
US3701208 *Jul 16, 1970Oct 31, 1972Dalebout Melvin WSki boot
US4095356 *Oct 15, 1976Jun 20, 1978Scott Usa, Inc.Boot with pivoted upper
US4655465 *Dec 2, 1985Apr 7, 1987Lyle GiffinIce skate
US4777743 *Apr 16, 1987Oct 18, 1988Roehrig Jr August EReady weight shoe
US4914837 *Jan 3, 1989Apr 10, 1990Rieffel Donald WSandal with contained granular material to provide a pad for a person's foot
US5007417 *Apr 2, 1990Apr 16, 1991Mikros U.S.A., Inc.Ankle brace
US5117566 *May 2, 1991Jun 2, 1992Lloyd Amie JShoe construction with a sole formed of pneumatic tubes
US5189815 *Oct 28, 1991Mar 2, 1993Nordica S.P.A.Ski boot with flexible metatarsal, tibial and calf portions
US5289645 *Jun 29, 1993Mar 1, 1994Calzaturificio Tecnica SpaInner lining for ski boots having a one piece tongue assembly
US5337432 *Oct 30, 1990Aug 16, 1994Markku PirhonenMethod of shaping and a series of shaping implements for slalom boots
US5394628 *Mar 20, 1992Mar 7, 1995Salomon S.A.Alpine ski boot with an energy flap journalled on the shell base
US5449005 *Dec 22, 1993Sep 12, 1995Echols; Tony R.Removable, shoe interior ankle brace
US5509217 *Nov 15, 1994Apr 23, 1996Lange International S.A.Inner comfort boot for ski boot
US5669160 *May 28, 1996Sep 23, 1997Noridica S.P.A.Innerboot particularly for skates
US5775009 *Nov 4, 1996Jul 7, 1998Tecnica SpaNon-rigid shoe for a snow board
US6098314 *Dec 4, 1996Aug 8, 2000Nordica S.P.A.Boot with an interconnected inner boot and cuff structure
US6112435 *Jul 1, 1998Sep 5, 2000Lange International S.A.Sports boot
US6360454Dec 7, 1999Mar 26, 2002The Burton CorporationTongue stiffener for footwear
US6371494 *Jan 10, 2000Apr 16, 2002Salomon S.A.Sports boot with variable rigidity
US6467192 *Oct 13, 1999Oct 22, 2002Tingley Rubber CorporationMethod and apparatus for functionally covering footwear of various sizes and shapes
US6557865Oct 9, 1998May 6, 2003The Burton CorporationHighback with adjustable stiffness
US6671981 *Aug 3, 2001Jan 6, 2004Jeffrey S. Brooks, Inc.Footwear
US6748676 *Dec 21, 1999Jun 15, 2004Bauer Nike Hockey Inc.Sport footwear component construction
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US7168188 *Jul 15, 2004Jan 30, 2007Nike, Inc.Article footwear with removable heel pad
US7225563 *Aug 10, 2004Jun 5, 2007Eddie ChenShoe with adjustable fitting
US7293372 *Oct 8, 2004Nov 13, 2007Wolverine World Wide, Inc.Footwear upper with flexible collar assembly
US7325813 *Jun 28, 2004Feb 5, 2008Samuel BockSkate boot
US7430818 *Jun 17, 2003Oct 7, 2008Random DesignItem of footwear having a rigid shell and flexible pad
US7441351 *Aug 17, 2005Oct 28, 2008The Timberland CompanyFootwear for hostile environments
US7712230Jun 25, 2007May 11, 2010Wolverine World Wide, Inc.Footwear upper with flexible collar assembly
US8196321 *May 28, 2009Jun 12, 2012Nike, Inc.Article of footwear with a shape correcting member
US8215032 *Jul 30, 2010Jul 10, 2012Nike, Inc.Article of footwear having an upper with a structured intermediate layer
US8505216Jul 6, 2012Aug 13, 2013Nike, Inc.Article of footwear having an upper with a structured intermediate layer
US8529267Nov 1, 2010Sep 10, 2013Nike, Inc.Integrated training system for articles of footwear
US8573981Jun 28, 2010Nov 5, 2013Nike, Inc.Training system for an article of footwear with a ball control portion
US8616892Jun 28, 2010Dec 31, 2013Nike, Inc.Training system for an article of footwear with a traction system
US8632342Dec 11, 2009Jan 21, 2014Nike, Inc.Training system for an article of footwear
US20100287790 *Jul 30, 2010Nov 18, 2010Nike, Inc.Article Of Footwear Having An Upper With A Structured Intermediate Layer
US20110099846 *Jun 15, 2010May 5, 2011Bruce FischerAlpine ski boot with strap closure
US20110138656 *Dec 14, 2010Jun 16, 2011Salomon S.A.S.Footwear with improved upper
WO2005104892A2 *Apr 14, 2005Nov 10, 2005Samuel BockImproved skate boot
Classifications
U.S. Classification36/117.6, 12/142.00R, 36/89, 36/71, 36/118.2
International ClassificationA43B5/04
Cooperative ClassificationA43B5/0405, A43B5/0409, A43B1/0018
European ClassificationA43B1/00B, A43B5/04B4, A43B5/04B