US3824716A - Footwear - Google Patents

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US3824716A
US3824716A US41410773A US3824716A US 3824716 A US3824716 A US 3824716A US 41410773 A US41410773 A US 41410773A US 3824716 A US3824716 A US 3824716A
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footwear
sole
upper
grooves
bottom
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Expired - Lifetime
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Paolo A Di
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Paolo A Di
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Priority to US21661072 priority Critical patent/US3806974A/en
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Priority to US41410773 priority patent/US3824716A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29DPRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D35/00Producing footwear
    • B29D35/06Producing footwear having soles or heels formed and joined on to preformed uppers using a moulding technique, e.g. by injection moulding, pressing and vulcanising
    • B29D35/08Producing footwear having soles or heels formed and joined on to preformed uppers using a moulding technique, e.g. by injection moulding, pressing and vulcanising having multilayered parts
    • B29D35/081Producing footwear having soles or heels formed and joined on to preformed uppers using a moulding technique, e.g. by injection moulding, pressing and vulcanising having multilayered parts by injection moulding
    • AHUMAN NECESSITIES
    • A43FOOTWEAR
    • A43BCHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00Soles; Sole and heel units
    • A43B13/14Soles; Sole and heel units characterised by the constructive form
    • A43B13/22Soles made slip-preventing or wear-resisting, e.g. by impregnation or spreading a wear-resisting layer
    • A43B13/223Profiled soles
    • AHUMAN NECESSITIES
    • A43FOOTWEAR
    • A43BCHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00Soles; Sole and heel units
    • A43B13/28Soles; Sole and heel units characterised by their attachment, also attachment of combined soles and heels

Abstract

The invention disclosed is directed to skid-resistant footwear having an outer sole provided with grooves and wavy ribs spaced apart by the grooves. Also disclosed is an improved process for making the footwear, including injection molding a bottom onto a footwear upper employing a mold with a bottom plate having wavy elongate uprights.

Description

[ July 23, 1974 United States Patent [1 1 Di Paolo 3,327,334 6/1967 \Vilmanns et al. 36/32 R 3,444,632

[ FOOTWEAR 5/1969 Hack et 36/32 R Primary ExaminerPatrick D. Lawson Attorney, Agent, or Firm-John G. Schwartz [22] Filed:

ABSTRACT Related US. Application Data [62] Division of Ser.

No. 216,610, Jan. 10, 1972,

abandoned" The invention disclosed is directed to skid-resistant footwear having an outer sole provided with grooves and wavy ribs spaced apart by the grooves. Also disclosed is an improved process for making the foot- [52] [1.8. 36/32 R [51] Int. A43b 13/04 [58] 36/32 R, 25 R, 28, 59 R Field of wear, including injection molding a bottom onto a footwear upper employing a mold with a bottom plate having wavy elongate uprights.

[56] References Cited UNITED STATES PATENTS 2,928,192 3/1960 Green 36/32 R 3 Claims, 17 Drawing Figures PATENTED M2319" Fla:

gwmnnma s sueimura FIG. /4

FOOTWEAR This application is a divisional application of Ser. No. 216,610; filed Jan. 10, 1972 now abandoned.

The present invention relates to footwear of improved skid resistance having an outer sole provided with grooves and wavy ribs spaced apart by the grooves. The invention also provides improvements in footwear-making processes of the type which include forming and attaching a bottom to an upper by injection molding. The improvements include forming the bottom using a bottom plate having wavy elongate uprights for providing the grooves and ribs in the outer sole.

Numerous methods for forming footwear are available to the art. Generally, however, footwear forming methods known heretofore have not been entirely satisfactory for reasons such as complexity, inefficiency and others. Designs for soles of footwear or shoes are taught in U.S. Pat. No. D 1 17,585 to Sperry and in U.S. Pat. No. D 196,355 to Doherty. Soles provided with the Sperry U.S. Pat. No. D 117,585 design include zigzag slits in a smooth surface thereof and are characterized when at'rest in thatsections formed between the slits are in contact. It is a standard procedure in the shoe making industry to cut or punch slits in sole blanks and cut the slit blanks to prepare soles. However, the procedure has a number of drawbacks in that -sensitivedevices which form the slits are-easily damaged and cutting soles from blanks typically results in waste of residual blank materials. Attaching the prepared sole to footwear undesirably requires great skill and care which, when not exercised, often result in formation of low quality footwear referred to in the art as rejects. In general, soles having the U.S. Pat. No. D 117,585 design have not been entirely satisfactory from not only the standpoint of skid resistance,- but also from standpoints of efficiency in forming such soles and in making footwear employingthe soles.

Soles of the Doherty U.S. Pat. No. D l96,355 design include a tread layer of complex tapering construction which provides less than the amount of ordinarily supportable tread surface desired by many wearers. Footwear provided with soles of such designs are of further limited utility in that the soles are difficult to clean and when the soles are pressed by the weight of a wearer against non-rigid supports, such as soft carpets and others, objectionable indentations result in the supports. Moreover, mud and other soils, particularly when wet, tend to cake in the acutely tapering recesses of such soles and after drying, such caking often is undesirably released.

Footwear having a molded bottom attached to an upper is well known in the art. It is conventional to make such footwear using processes of the type which include, in general, steps substantially as follows;

a. providing a partial mold assembly having side mold means and a sole plate within the side mold means, said side mold means having an inner peripheral recess corresponding substantially in height to the height of the bumper portion of the bottom to be formed, with the side mold means and the sole plate defining an upwardly open hollow space;

b. inserting a last-and-upper assembly into the hollow space, said last-and-upper assembly including a last and a footwear upper demountably mounted on the last, with the bottom of the upper extending inwardly under at least the bottom edge of the last, to engage the side mold means and to provide a molding arrangement having a cavity defined by the lower portion of the lasted-upper assembly, the side mold means, and the sole plate, said molding arrangement having channel means connected to said cavity for injection filling the cavity with a solid-forming liquid material;

c. injecting elastomeric solid-forming liquid material through the channel means to substantially fill the cavity in the molding arrangement; and

d. permitting the injected liquid material to solidify to form a bottom attached to the upper.

Variations in the process are taught, for example, in U.S. Pat. No. 3,345,664 to Ludwig; U.S. Pat. No. 3,372,415 to King; U.S. Pat. No. 3,345,763 to Rollman; and in U.S. Pat. No. 3,610,968 to Hobbs et al.

It has now been found by practice of thepresent invention that footwear having a skid-resistant outer sole provided with grooves and wavy ribs spaced apart by the grooves is made in simple, economical manner. Such footwear may be made in accordance with this invention using minimum hand labor, thus overcoming numerous drawbacks of the prior art. Typically, more than half the labor involved in conventional footwearforming methods may thus be eliminated.

Generally stated, the present invention provides improvements in conventional footwear-making processes of the type which is generally set forth above. The improvements include using in processes of the foregoing type a sole plate having a multiplicity of spaced apart elongate uprights extending transversely of the longitudinal axis of the sole plate in generally parallel wavy relationship one to others, with thickness of the uprights being from about 0.05 to about I millimeter longitudinally of the sole plate. When made by the improved process of this invention, the present footwear may be characterized with better resistance to skidding without detracting from wear resistance thereof and without sacrificing foot comfort.

Practice of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings wherein like numerals refer to similar elements throughout the several views.

In the drawings:

FIG. 1 is an elevation view longitudinally of a shoe having a molded bottom generally illustrating footwear of the present invention;

- FIG. 2 is a plan view of the shoe of FIG. 1 illustrating the groove-containing outer sole thereof;

FIG. 3 is a longitudinal section of the shoe taken on line 3-3 of FIG. 2, with part of the upper removed;

FIG. 4 is a transverse section of the shoe illustrated in FIG. 1 taken on line 4-4 thereof;

FIG. 5 is a transverse section of the shoe of FIG. 1 taken on line 5-5 thereof;

FIG. 6 is an enlarged plan view of the part of the bottom within broken rectangular line 6 of FIG. 2 showing part of the outer sole in greater detail;

FIG. 7 is an enlarged longitudinal section taken on line 7-7 of FIG. 2 and FIG. 6;

FIG. 8 is an enlarged transverse section taken on line 8-8 of FIG. 2 and FIG. 6;

FIG. 9 is an enlarged transverse section taken on line 9-9 of FIG. 2 and FIG. 6;

FIG. 10 is an elevation section longitudinally of a molding arrangement for making footwear having a FIG. 14 is an elevation section transversely of the molding arrangement prior to injecting material to form the upper sole;

FIG. 15 is a sectional view similar to FIG. 14, illustrating a shoe bottom made using the process; FIG. 16 is an enlarged fragmentary section of the mold illustrating the shoulder portion of an embodiment lasted upper; and

FIG. 17 illustrates, in a view resembling FIG. 16, embodiment footwear with the upper more deeply embedded in the upper sole.

Footwear made according to the improved process of this invention is illustrated by. shoe 10 shown in an elevation view in FIGfl, in a bottom plan view in FIG. 2 and in longitudinalelevational section in FIG. 3. The shoe includes upper 11 of suitable flexible material to which is attached bottom part 12 which includes outer sole 14 connected to the upper by bumper portion 16 which is peripheral of the bottom and integral with inner portion 24 of upper sole 18 (FIG. 3); As shown in FIG 2 generally, and more fully described herein below, the bottom includes a number of wavy ribs 26 which are spaced apart by a multiplicity of elongate grooves 28 extending transversely of the longitudinal axis of the shoe in generally parallel wavy relationship one to others..The grooves must be from about 0.05 to l millimeter in thickness, measure longitudinally of the bottom part. The outer sole may include margins 30 and 31 between opposite ends of the grooves and the bumper portion.

Details in the construction of the shoe are more clearly illustrated by the sectional view shown in FIGS. 3, 4 and 5, which are taken along lines 3-3, and 4-4 and 5-5 respectively-(FIGS. l and 2). The bumper or edge portion includes midpart 19 with ridge 20 projecting upwardly from the midpart and fitting tightly about upper 11 in outwardly facing portions of the lower shoulder thereof. The bumper includes lower portion 22 which projects downwardly from the midpart and contains the outer or tread sole 14. The lower shoulder of the upper includes shelf 25 extending inwardly of the bumper with lasting string 27 attached to the edge of the shelf by stitching not shown. The topside of inner portion 24 of the upper sole may be concavely arcuate transversely of the shoe, as generally shown in the transverse sectional elevation views of FIG. 4 and FIG. 5. Generally, concave upper soles provide greater comfort to the feet of wearers.

The ribs and grooves provided in the outer sole of footwear made according to this invention are illustrated in greater detail in FIGS. 6-9. Generally, the grooves must be from about 0.05 to about! millimeter in thickness, measured longitudinally of the outer sole. It is found that grooves which are larger than about 1 millimeter in thickness trap objects causing discomfort or annoyance to the wearer, while grooves which are smaller in thickness generally fail to provide adequate skid resistance to the shoe. The grooves preferably are in the range from about 0.2 to about 0.3 millimeter in thickness. The inner portion of the upper sole may be of a foam material. The bumper portion and the tread surface of the outer or lower sole are preferably of dense wear-resistant elastomeric material. The grooves in the outer sole permit flexing of the ribs and reflexing to non-biased position, and are generally found to aid in minimizing wear of the sole tread surface.

As a general preference, the grooves are of generally rectangular U-shape in vertical section longitudinally of the shoe. It is found that grooves of such shape normally resist clogging with mud or other soils and at least do not uncontrolably release such soils in the event that clogging does obtain, thereby increasing the versatility of the shoe with respect to where it may be suitably worn. It is also generally found that grooves of thin rectangular shape'provide good balance between anticaking and receptivity to water such that good traction is provided on slippery surfaces, for example, on boats where water often collects in slip producing manner. The present shoe is thus eminently suitable for use by wearers even on surfaces of boats and other slippery surfaces.

In a preferred embodiment, the curvature of the grooves bears a relationship to the thickness thereof such that the ribs provided in the sole are solid in transverse vertical section taken, as at line 8-8 (and shown in FIG. 8) forwardly of the foremost parts of the rear face of a rib and rearwardly of the rearmost parts of the forward face of the same rib.- As used herein, the words forward, forwardly and foremost refer to the forward or toe end of the sole- (or the direction thereof), the location of which is indicated in FIG. 6 by directional arrow 34; and the rearward, rearwardly and rearmost refer to the opposite or heel end of the sole (or the direction thereof), the location of which isindicated by directional arrow 34.

The sides of the various grooves which appear as wavy lines transversely of the sole in the plan view of FIG. 6 include a plurality of spaced apart arcuate toewardly convex portions and a plurality of spaced apart arcuate toewardly concave portions, generally as illustrated, with the convex portions connected one to others in repeated manner by the concave portions and with the concave portions connected one to others in repeated manner by the convex portions. It is unexpectedly found that skid resistance is further improved by providing grooves having sides characterized in that the average radius r of the arcuate side portions which face in a first direction is relatively small with respect to the average radius R of the arcuate portions facing in the opposite direction as shown in FIG. 6.

While the grooves may be of almost any depth, groove depth of about 2 to about 5 millimeters is found suitable. Flexibility of the ribs is dependent on the material of which the lower sole is formed. In general, however, suitable flexibility is provided by ribs having longitudinal thickness corresponding to from about 0.8 to about 2 times the depth of the grooves. A sole which is generally preferred includes, in combination, ribs having longitudinal thickness from about 2 to about 3 millimeters and grooves having longitudinal thickness of about 0.1 to about 0.3 millimeter and depth of about 2 to about 3 millimeters. In general, ribs corresponding in thickness to more than about 5 times the depth of the grooves are insufficiently flexible to provide adequate skid resistance.

As used herein, the term elastomer means any and all plastics or plastic-like materials embodying characteristics of resiliency and capability of being rendered plastic for a sufficient length of time to be injected into a mold to form the bottom part of a shoe and to be then caused to set, cure, harden, solidify or otherwise become relatively dimensionally stable. Suitable solidforming liquid materials which may be used to form the bottom of the shoe are exemplified by, but not limited to, polyvinyl chloride mixtures, rubber, polyurethane mixtures and the like.

Referring to FIGS. -15, the present process for making footwear, illustrated by shoe 10, includes providing a mold assembly having side mold means, illustrated by split ring side molds 36, and sole plate 38. In accordance with this invention, the'sole plate has a multiplicity of wavy elongate uprights 40 extending transversely of the longitudinal axis of the plate in generally parallel relationship one to others for providing grooves 28 in shoe 10.The thickness of the uprights generally must be from about0.05 to about 1 millimeter longitudinally of the sole plate. It is found that uprights which are more than on 1 millimeter in-thickness form unsuitably thick grooves in outer soles, while uprights which are less than 0.05 millimeter in thickness are of inadequate damage resistance for economical use thereof. For greater protection against these and other undesirable results, the uprights preferably are of I thickness in the range of from about 0.2 to about 0.3

millimeter. Split ring side mold 36 includes inner peripheral recess 42 corresponding substantially in height to the height of the bumper portion of the bottom to be formed, with the side mold and the sole plate defining an upwardly open hollow space. The side mold includes lip 43 above recess 42 for engagement with a lasted upper inserted into the hollow space. A lasted upper assembly including upper 11 lasted about last 54 is inserted into the mold space to form a molding arrangement wherein the lasted upper is in engagement with mold lip 43 and having cavity 45 (FIG. 10) defined by the lower portion of the lasted upper assembly, the side mold, and the sole plate. The molding arrangement is provided with means for injection filling cavity 45 as illustrated by passage 44 which connects recess 42 to the outer edge of the side mold and may have a tapered end for receiving an outlet nozzle of an injection extruder. Sole plate 38 may be provided with means for injecting elastomeric material as illustrated by passage 46 having a first port 48 in plate surface 49 and a second port 50 for flow communication with passage 52 provided in the side mold (FIGS. 12 and 13).

The lasted upper assembly may be any suitable arrangement of an upper on a last, examples of which include Mackay lasted uppers, vertical welt and string lasted uppers, and lasted uppers with sewn-in upper soles for contacting the foot of a wearer.

Elastomeric solid-forming liquid material is injected as through passage 44 to substantially fill the cavity 45 (FIGS. 10 and 14) while the sole plate is in a first position characterized in that bottom edge 53 of the recess in the side mold is below the shoulder of the sole plate as shown in FIGS. 10, 11 and 14. The sole plate is maintained in the first position until the injected material solidifies or hardens substantially throughout to form upper sole 18 attached to the upper and having bumper portion 16 peripherally of inner portion 24 of the upper sole as shown in FIG. 11. It is found that sole plates formed of aluminum or alloys thereof or almost any material of thermal conductivity on the order of that of aluminum reduce the time for solidification to take place. Uprights 40 are found to aid in minimizing solidification time. The plate may be provided with additional means for cooling such as holes (not shown) with cooling water circulated therethrough.

After upper sole 18 sets or solidifies to form a dimensionally stable structure, the sole plate is lowered to a second position characterized in that the bottom edge of the recess is slightly above the shoulder of the plate, thus providing cavity 47 within downwardly projecting portion 22 of the bumper 16 as shown in FIG. 12. Cavity 47 may then be filled by injecting solid-forming liquid material through passage 52, port 50, passage 46 and port 48 in sufficient amount to at least substantially fill the cavity. The plate is maintained in the second position for a suitable time to permit setting or solidification of the injected material, resulting in formation and bonding of I groovecontaining outer sole 14 to upper sole 18 as shown in FIGS. 13 and 15. The mold is thereafter opened as by retracting a half-ring of the side mold to permit removal of the molded bottom shoe which may be demounted from the last in any suitable manner.

Residual injection molding material may be with? drawn from the various passages in any suitable manner as by means of sprue extractor apparatus disclosed in US. Pat. No. 3,588,958 to Metzger.

The solemay have upright-free margins between the opposite ends of the uprights and the peripheral edge of the sole plate, the sole plate margins corresponding to margins 30 and 31 of the outer sole as shown in FIG. 2. It is found that sole plates having margins provide longer and more efficient service with less accidental damage to the uprights. I

In footwear made by the above-described two-step injection embodiment of the present improved process and illustrated by shoe 10, wavy elongate projections 56 of the outer sole 14 are tightly received in corresponding grooves 58 in the upper sole, thereby providing added strength to the bond. The two-step injection process has the added advantage that different plastic compositions may be used for the upper sole and for the outer sole. The different compositions may also differ in color, thereby providing greater versatility.

Optionally, outer sole l4 and upper sole 18 may be formed of one piece construction in a one-step injection operation in which the sole plate is initially placed in the second position, i.e., omitting the first plate position and injecting solid-forming liquid material into the resulting cavity.

While the bottom of the outer sole may have any suitable shape, it is found that generally better skid resistance and increased bottom durability are provided by a preferred embodiment of the present process using a sole plate with the sole plate surface 49 arcuately tapering longitudinally upwardly from generally about the middle of the sole plate or slightly forward thereof to within a one inch region near the toe end in a manner corresponding generally to longitudinally arcuate forward portion 15 of the outer sole as illustrated in FIG. 1. The forward portion of the outer sole may be formed of transversely arcuate upwardly concave shape as 7 shown in FIG. 4 by molding with a sole plate the forward portion of which is transversely arcuate as shown in FIG. 15.

Sole plates for use herein may be formed using any suitable forming method. For example, the sole plate may be made from an appropriate piece of metal stock, preferably aluminum or aluminum alloy stock, using conventional milling techniques.

The shape of the uprights provided on the sole plate should be substantially the same as the shape of the grooves to be provided in the outer sole being formed. Thus, as a general preference, the uprights are generally of rectangular U-shape in vertical section longitudinally of the sole plate. The tops of the uprights may suitably be above the sole plate surface across which the uprights extend by from about 2 to about 5 millimeters. Spacing between the uprights may be from about 0.8 to about 2 times the height of the uprights. A generally preferred shoe is made using a sole plate with uprights spaced apart at a distance from about 2 to about 3 millimeters, the uprights being from about 0.1 to about 0.3 millimeter in thickness longitudinally of the sole plate and from about 2 to about 3 millimeters in height as measured between the tops of the uprights and the sole plate surface across which the uprights extend. The uprights may have sides characterized in that the average radius of arcuate side portions facing in a first direction is small relative to the average radius of oppositely facing side portions, corresponding to the grooves illustrated in FIG. 6. Where sole plate margins corresponding to outer sole margins 30 and 31 are included, they preferably are at least about one millimeter in width transversely of the sole plate.

The enlarged fragmentary view of FIG. 16 (corresponding to a portion of FIG. 14) and the enlarged fragmentary view shown in FIG. 17 (corresponding to a portion of FIG. show an arrangement of the upper on the last in another embodiment of this process. It is seen that the lower margin or shelf 25 of the upper may be drawn by string 27 to a position tapering inwardly and slightly downwardly away from last 54. Upon injection molding in the foregoing manner, this embodiment results in further embedding the shelf and string in the molded bottom and thus provides a smoother foot contacting surface to the added comfort of the wearer.

It is to be understood that the foregoing detailed description is given merely by way of illustration and that various modifications may be made therein, including in the improvements provided by the present invention and in the basic heretofore known process, without departing from the spirit or scope of the present inventlon.

What is claimed is:

l. Footwear comprising, in combination, a flexible upper and a bottom part having an outer sole connected to the upper by a bumper portion peripheral of the footwear and integral with an upper sole, the bottom of said outer sole having a number of wavy ribs spaced apart by a multiplicity of elongate grooves extending transversly of the longitudinal axis of the footwear in generally parallel wavy relationship one to the others, with thickness of the grooves being from about 0.05 to about 1 millimeter longitudinally of the footwear, the grooves being of generally U-s hape in vertical section longitudinally of the footwear, said bottom part having been formed and attached to the upper by solidification of elastomeric solid-forming liquid material in a mold.

2. The footwear of claim 1 wherein the wavy ribs have first arcuate side portions facing in a first direction and are connected by oppositely facing arcuate portions, the average radius of the first arcuate portions being relatively smaller than the average radius of the oppositely facing arcuate portions.

3. The footwear of claim 1 wherein the outer sole and the bumper having the upper sole integral therewith are all of one-piece construction.

Claims (3)

1. Footwear comprising, in combination, a flexible upper and a bottom part having an outer sole connected to the upper by a bumper portion peripheral of the footwear and integral with an upper sole, the bottom of said outer sole having a number of wavy ribs spaced apart by a multiplicity of elongate grooves extending transversly of the longitudinal axis of the footwear in generally parallel wavy relationship one to the others, with thickness of the grooves being from about 0.05 to about 1 millimeter longitudinally of the footwear, the grooves being of generally Ushape in vertical section longitudinally of the footwear, said bottom part having been formed and attached to the upper by solidification of elastomeric solid-forming liquid material in a mold.
2. The footwear of claim 1 wherein the wavy ribs have first arcuate side portions facing in a first direction and are connected by oppositely facing arcuate portions, the average radius of the first arcuate portions being relatively smaller than the average radius of the oppositely facing arcuate portions.
3. The footwear of claim 1 wherein the outer sole and the bumper having the upper sole integral therewith are all of one-piece construction.
US41410773 1972-01-10 1973-11-08 Footwear Expired - Lifetime US3824716A (en)

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US4377041A (en) * 1980-06-26 1983-03-22 Alchermes Stephen L Athletic shoe sole
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US5224810A (en) * 1991-06-13 1993-07-06 Pitkin Mark R Athletic shoe
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US20050132614A1 (en) * 2003-12-23 2005-06-23 Brennan Timothy J. Sole construction
US7093379B2 (en) 1988-09-02 2006-08-22 Anatomic Research, Inc. Shoe sole with rounded inner and outer side surfaces
US7310894B1 (en) * 2005-05-12 2007-12-25 Schwarzman John L Footwear for use in shower
US7546699B2 (en) 1992-08-10 2009-06-16 Anatomic Research, Inc. Shoe sole structures
US7565754B1 (en) 2006-04-07 2009-07-28 Reebok International Ltd. Article of footwear having a cushioning sole
US20090272010A1 (en) * 2008-04-30 2009-11-05 The Stride Rite Corporation Infant Shoes
US20100287793A1 (en) * 2009-05-13 2010-11-18 K-2 Corporation Sports boot construction
US8141276B2 (en) 2004-11-22 2012-03-27 Frampton E. Ellis Devices with an internal flexibility slit, including for footwear
US8256147B2 (en) 2004-11-22 2012-09-04 Frampton E. Eliis Devices with internal flexibility sipes, including siped chambers for footwear
US8291618B2 (en) 2004-11-22 2012-10-23 Frampton E. Ellis Devices with internal flexibility sipes, including siped chambers for footwear
US20130036628A1 (en) * 2011-08-12 2013-02-14 Thomas Kenneth Hussey Amphibious footwear
US8670246B2 (en) 2007-11-21 2014-03-11 Frampton E. Ellis Computers including an undiced semiconductor wafer with Faraday Cages and internal flexibility sipes
US8732230B2 (en) 1996-11-29 2014-05-20 Frampton Erroll Ellis, Iii Computers and microchips with a side protected by an internal hardware firewall and an unprotected side connected to a network
US20170095036A1 (en) * 2015-10-06 2017-04-06 Maoshuang Chen Footwear having polyurethane bridge layer joining sole and upper and method of manufacturing same
US20180014606A1 (en) * 2016-07-15 2018-01-18 Cole Haan Llc Shoe Having Sole with Transverse Grooves and Tread Members
US10182621B2 (en) 2014-04-14 2019-01-22 Steven D. Holt Protective foot covering device

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US4314413A (en) * 1976-11-29 1982-02-09 Adolf Dassler Sports shoe
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WO1983003528A1 (en) * 1982-04-12 1983-10-27 Sperry Top Sider Inc Outsole
US4777738A (en) * 1984-05-18 1988-10-18 The Stride Rite Corporation Slip-resistant sole
DE3440567A1 (en) * 1984-11-07 1986-05-22 Kloeckner Ferromatik Desma Sports shoe, in particular football boot, with an injection-moulded sole formed on the insole, and with injection-moulded studs
US4667423A (en) * 1985-05-28 1987-05-26 Autry Industries, Inc. Resilient composite midsole and method of making
DE3535830A1 (en) * 1985-10-08 1987-04-16 Kloeckner Ferromatik Desma Shoe, in particular sports shoe
WO1987007481A1 (en) * 1986-06-04 1987-12-17 Comfort Products, Inc. Multi-density shoe sole
US5025573A (en) * 1986-06-04 1991-06-25 Comfort Products, Inc. Multi-density shoe sole
US5572805A (en) * 1986-06-04 1996-11-12 Comfort Products, Inc. Multi-density shoe sole
US4724622A (en) * 1986-07-24 1988-02-16 Wolverine World Wide, Inc. Non-slip outsole
US4783909A (en) * 1987-05-04 1988-11-15 Van Doren Rubber Co., Inc. Reversible heel counter for shoes
DE3716424A1 (en) * 1987-05-15 1988-12-01 Adidas Sportschuhe Outsole for sports shoes
US4760652A (en) * 1987-06-04 1988-08-02 Quabaug Corporation Composite outsole
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US6708424B1 (en) 1988-07-15 2004-03-23 Anatomic Research, Inc. Shoe with naturally contoured sole
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US7093379B2 (en) 1988-09-02 2006-08-22 Anatomic Research, Inc. Shoe sole with rounded inner and outer side surfaces
US6314662B1 (en) 1988-09-02 2001-11-13 Anatomic Research, Inc. Shoe sole with rounded inner and outer side surfaces
US6163982A (en) * 1989-08-30 2000-12-26 Anatomic Research, Inc. Shoe sole structures
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US6308439B1 (en) 1989-08-30 2001-10-30 Anatomic Research, Inc. Shoe sole structures
US6729046B2 (en) 1989-08-30 2004-05-04 Anatomic Research, Inc. Shoe sole structures
US6662470B2 (en) 1989-08-30 2003-12-16 Anatomic Research, Inc. Shoes sole structures
US6591519B1 (en) 1989-08-30 2003-07-15 Anatomic Research, Inc. Shoe sole structures
US6675499B2 (en) 1989-08-30 2004-01-13 Anatomic Research, Inc. Shoe sole structures
US7287341B2 (en) 1989-10-03 2007-10-30 Anatomic Research, Inc. Corrective shoe sole structures using a contour greater than the theoretically ideal stability plane
US6360453B1 (en) 1989-10-03 2002-03-26 Anatomic Research, Inc. Corrective shoe sole structures using a contour greater than the theoretically ideal stability plan
US20050016020A1 (en) * 1989-10-03 2005-01-27 Ellis Frampton E. Corrective shoe sole structures using a contour greater than the theoretically ideal stability plane
US6789331B1 (en) 1989-10-03 2004-09-14 Anatomic Research, Inc. Shoes sole structures
US6918197B2 (en) 1990-01-10 2005-07-19 Anatomic Research, Inc. Shoe sole structures
US6487795B1 (en) 1990-01-10 2002-12-03 Anatomic Research, Inc. Shoe sole structures
US7334356B2 (en) 1990-01-10 2008-02-26 Anatomic Research, Inc. Shoe sole structures
US7174658B2 (en) 1990-01-10 2007-02-13 Anatomic Research, Inc. Shoe sole structures
US20040250447A1 (en) * 1990-01-24 2004-12-16 Ellis Frampton E. Shoe sole structures using a theoretically ideal stability plane
US6609312B1 (en) 1990-01-24 2003-08-26 Anatomic Research Inc. Shoe sole structures using a theoretically ideal stability plane
US6748674B2 (en) 1990-01-24 2004-06-15 Anatomic Research, Inc. Shoe sole structures using a theoretically ideal stability plane
US7082697B2 (en) 1990-01-24 2006-08-01 Anatomic Research, Inc. Shoe sole structures using a theoretically ideal stability plane
US6115945A (en) * 1990-02-08 2000-09-12 Anatomic Research, Inc. Shoe sole structures with deformation sipes
US6763616B2 (en) 1990-06-18 2004-07-20 Anatomic Research, Inc. Shoe sole structures
US6295744B1 (en) * 1990-06-18 2001-10-02 Anatomic Research, Inc. Shoe sole structures
US5224810A (en) * 1991-06-13 1993-07-06 Pitkin Mark R Athletic shoe
WO1993000838A1 (en) * 1991-07-09 1993-01-21 The Timberland Company Sole for boating shoes
US5423135A (en) * 1991-07-09 1995-06-13 The Timberland Company Outsole for boating shoes having flattened sine wave incision
US5247741A (en) * 1992-03-06 1993-09-28 Suave Shoe Corporation Footwear having a molded sole
US7647710B2 (en) 1992-08-10 2010-01-19 Anatomic Research, Inc. Shoe sole structures
US7546699B2 (en) 1992-08-10 2009-06-16 Anatomic Research, Inc. Shoe sole structures
US5433022A (en) * 1993-04-16 1995-07-18 Lo; Chie-Fang Three color side wall rubber sole in simply changeable mode
US5718064A (en) * 1994-04-04 1998-02-17 Nine West Group Inc. Multi-layer sole construction for walking shoes
US8732230B2 (en) 1996-11-29 2014-05-20 Frampton Erroll Ellis, Iii Computers and microchips with a side protected by an internal hardware firewall and an unprotected side connected to a network
GB2323320A (en) * 1997-03-21 1998-09-23 Wayne Wang Multiple injection moulded insole structure
US20040205981A1 (en) * 2001-10-10 2004-10-21 Cole Charles D Apparatus and methods for imbedded rubber outer
US7418791B2 (en) 2001-10-10 2008-09-02 Cole Iii Charles D Apparatus and methods for imbedded rubber outer
WO2003030670A1 (en) * 2001-10-10 2003-04-17 Cole Charles D Iii Apparatus and methods for imbedded rubber outer
US7992324B2 (en) 2003-03-24 2011-08-09 Reebok International Ltd. Stable footwear that accommodates shear forces
US7377057B2 (en) 2003-03-24 2008-05-27 Reebok International Ltd. Stable footwear that accommodates shear forces
US20060032087A1 (en) * 2003-03-24 2006-02-16 David Lacorazza Stable footwear that accommodates shear forces
US6983555B2 (en) 2003-03-24 2006-01-10 Reebok International Ltd. Stable footwear that accommodates shear forces
US20040187350A1 (en) * 2003-03-24 2004-09-30 Reebok International Ltd. Stable footwear that accommodates shear forces
US7401421B2 (en) * 2003-12-23 2008-07-22 Timothy James Brennan Sole construction
US20050132614A1 (en) * 2003-12-23 2005-06-23 Brennan Timothy J. Sole construction
US8873914B2 (en) 2004-11-22 2014-10-28 Frampton E. Ellis Footwear sole sections including bladders with internal flexibility sipes therebetween and an attachment between sipe surfaces
US9339074B2 (en) 2004-11-22 2016-05-17 Frampton E. Ellis Microprocessor control of bladders in footwear soles with internal flexibility sipes
US9642411B2 (en) 2004-11-22 2017-05-09 Frampton E. Ellis Surgically implantable device enclosed in two bladders configured to slide relative to each other and including a faraday cage
US8141276B2 (en) 2004-11-22 2012-03-27 Frampton E. Ellis Devices with an internal flexibility slit, including for footwear
US8205356B2 (en) 2004-11-22 2012-06-26 Frampton E. Ellis Devices with internal flexibility sipes, including siped chambers for footwear
US9271538B2 (en) 2004-11-22 2016-03-01 Frampton E. Ellis Microprocessor control of magnetorheological liquid in footwear with bladders and internal flexibility sipes
US9107475B2 (en) 2004-11-22 2015-08-18 Frampton E. Ellis Microprocessor control of bladders in footwear soles with internal flexibility sipes
US9681696B2 (en) 2004-11-22 2017-06-20 Frampton E. Ellis Helmet and/or a helmet liner including an electronic control system controlling the flow resistance of a magnetorheological liquid in compartments
US8959804B2 (en) 2004-11-22 2015-02-24 Frampton E. Ellis Footwear sole sections including bladders with internal flexibility sipes therebetween and an attachment between sipe surfaces
US8494324B2 (en) 2004-11-22 2013-07-23 Frampton E. Ellis Wire cable for electronic devices, including a core surrounded by two layers configured to slide relative to each other
US8561323B2 (en) 2004-11-22 2013-10-22 Frampton E. Ellis Footwear devices with an outer bladder and a foamed plastic internal structure separated by an internal flexibility sipe
US8567095B2 (en) 2004-11-22 2013-10-29 Frampton E. Ellis Footwear or orthotic inserts with inner and outer bladders separated by an internal sipe including a media
US8925117B2 (en) 2004-11-22 2015-01-06 Frampton E. Ellis Clothing and apparel with internal flexibility sipes and at least one attachment between surfaces defining a sipe
US10021938B2 (en) 2004-11-22 2018-07-17 Frampton E. Ellis Furniture with internal flexibility sipes, including chairs and beds
US8732868B2 (en) 2004-11-22 2014-05-27 Frampton E. Ellis Helmet and/or a helmet liner with at least one internal flexibility sipe with an attachment to control and absorb the impact of torsional or shear forces
US8291618B2 (en) 2004-11-22 2012-10-23 Frampton E. Ellis Devices with internal flexibility sipes, including siped chambers for footwear
US8256147B2 (en) 2004-11-22 2012-09-04 Frampton E. Eliis Devices with internal flexibility sipes, including siped chambers for footwear
US7310894B1 (en) * 2005-05-12 2007-12-25 Schwarzman John L Footwear for use in shower
US7565754B1 (en) 2006-04-07 2009-07-28 Reebok International Ltd. Article of footwear having a cushioning sole
US9568946B2 (en) 2007-11-21 2017-02-14 Frampton E. Ellis Microchip with faraday cages and internal flexibility sipes
US8670246B2 (en) 2007-11-21 2014-03-11 Frampton E. Ellis Computers including an undiced semiconductor wafer with Faraday Cages and internal flexibility sipes
US8256146B2 (en) * 2008-04-30 2012-09-04 The Stride Rite Corporation Infant shoes
US20090272010A1 (en) * 2008-04-30 2009-11-05 The Stride Rite Corporation Infant Shoes
US20100287793A1 (en) * 2009-05-13 2010-11-18 K-2 Corporation Sports boot construction
US20130036628A1 (en) * 2011-08-12 2013-02-14 Thomas Kenneth Hussey Amphibious footwear
US10182621B2 (en) 2014-04-14 2019-01-22 Steven D. Holt Protective foot covering device
US20170095036A1 (en) * 2015-10-06 2017-04-06 Maoshuang Chen Footwear having polyurethane bridge layer joining sole and upper and method of manufacturing same
US10321736B2 (en) * 2016-07-15 2019-06-18 Cole Haan Llc Shoe having sole with transverse grooves and tread members
US20180014606A1 (en) * 2016-07-15 2018-01-18 Cole Haan Llc Shoe Having Sole with Transverse Grooves and Tread Members

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