Rubber Patents (Class 36/14)
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Patent number: 5678326Abstract: A waterproof laminated shaped element used as an insert for shoes of a cement-lasted design, including an outer layer, an insole, a lining and a waterproof, water-vapour permeable laminate including a functional layer and optionally a support layer, where a border section of the lower area of the laminate is turned back and bonded to the side having the functional layer such that the lining 3 abuts the edge of the border of the turned-back lower area of the laminate and the border section of the lower area of the laminate is bonded to the insole with a layer of adhesive is disclosed.Type: GrantFiled: April 3, 1996Date of Patent: October 21, 1997Assignee: Akzo Nobel NVInventor: Liviu-Mihai Pavelescu
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Patent number: 5667815Abstract: In a sandal, lateral parts are produced without a separate cementing process in a hollow mold in a single operation as a show sole is made by foaming. To this end the hollow mold has lateral pockets in which the strap parts are fixed by a holding frame reaching partially over the bottom end of each strap part before plastic is placed in the hollow mold and the mold is closed for foaming.Type: GrantFiled: March 26, 1996Date of Patent: September 16, 1997Assignee: ALSA GmbHInventors: Karl-Heinz Herber, Karl-Ernst Kohlhepp
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Patent number: 5637407Abstract: Composite including a rubber/thermoplastic blend adherent by itself to a thermoplastic material; the blend is in the form of a thermoplastic matrix containing rubber nodules functionalized and vulcanized during the mixing with the thermoplastic. Composite articles obtained by overmoulding the vulcanized rubber/thermoplastic blend onto the thermoplastic.Type: GrantFiled: November 10, 1994Date of Patent: June 10, 1997Assignee: Elf Atochem S. A.Inventors: Marius Hert, Patrick Alex, Martine Cerf, Christian Dousson
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Patent number: 5628127Abstract: The invention is a waterproof shoe which is characterized in that the lower edge of the upper material and the lower edge of the functional material layer are cut to different lengths so that one of the two edges projects over the other edge, and characterized in that at least the area of the insole adjacent to the seam consists of a material which is permeable to the plastic material used for the outsole in its liquid injection state, and the lower edge of the functional material layer is embedded into the plastic material used for the outsole.Type: GrantFiled: April 11, 1995Date of Patent: May 13, 1997Assignee: W. L. Gore & Associates, Inc.Inventor: Gunter Notzold
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Patent number: 5433021Abstract: A waterproof foot covering such as a shoe, boot or the like has a molded-on (foamed-on) outersole and an upper that is lined with a waterproof but water vapor-permeable layer. The lower welt region of the upper is connected to the lower welt region of the waterproof layer and to the outer welt region of the inner sole via an upper band, a lower band, and a multiplicity of tensile-load-resistant straps connecting the upper and lower bands to one another. The lower welt region of the upper is stitched to the upper band. The lower welt region of the waterproof layer and the outer welt region of the inner sole are stitched to the lower band. The straps and the lower band are embedded in the material forming the outersole. This material is connected, in this embedding region, to the waterproof layer in a waterproof manner by molding-on (foaming-on).Type: GrantFiled: October 18, 1993Date of Patent: July 18, 1995Assignee: Akzo N.V.Inventor: Rolf-Dirk Mahler
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Patent number: 5289644Abstract: An article of waterproof footwear and its method of manufacture are disclosed. The article of waterproof footwear has an upper containing a water-impermeable layer. The distal edge of the upper has a polymeric binding covering the distal edge and the inside and outside surfaces of the upper adjacent to the distal edge. The polymeric binding seals to a waterproof insole thereby effectively waterproofing the upper of the footwear. An outer sole is attached to the upper thereby forming the waterproof footwear.The method of manufacture allows production of a waterproof upper and the attachment to the upper of an outer sole, thereby forming the waterproof footwear of the invention.Type: GrantFiled: March 29, 1993Date of Patent: March 1, 1994Assignee: W. L. Gore & Associates, Inc.Inventors: Kathleen R. Driskill, Robert L. Henn, Jean Norvell
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Patent number: 5285546Abstract: A shoe with a waterproof lining (16) comprises a shaft (12) connected to a marginal strip (12b) made of a material which does not conduct water. The marginal strip (12b) is attached to the insole (10). A seal (24) is arranged between the marginal strip (12b) and the lining (16). The sole structure (14) is not attached to the marginal strip (12b). The seal (24) is made of a sealing material which is introduced between the marginal strip (12b) and the waterproof lining (16) independently of the sole structure (14).Type: GrantFiled: May 22, 1991Date of Patent: February 15, 1994Assignee: LOWA-Schuhfabrik Lorenz Wagner GmbH & Co. KGInventor: Franz Haimerl
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Patent number: 4899465Abstract: Footwear consisting of an insole, an upper sewn to the insole, a lining for lining the upper which is also sewn to the insole and has microporous functional layer that is waterproof and permeable to water vapor, and a waterproof plastic sole which is injection-molded to the bottom side of the insole and the lower portion of the upper and encloses the seam region. The lower portion of the upper which is adjacent to the insole is formed by a porous material that is adapted to be penetrated by the plastic sole material which is liquid during the injection molding operation.Type: GrantFiled: July 8, 1988Date of Patent: February 13, 1990Assignee: W. L. Gore & Associates, Inc.Inventors: Walter Bleimhofer, Thorger Hubner
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Patent number: 4876807Abstract: A shoe, especially for use in athletic activities such as ball games, having a sole structure including a insole, a flexible midsole, and an outer sole forming a wearing surface. The outer sole in constructed, at least in a toe region of the shoe, in a cuplike form. An upper of the shoe is constructed, also at least in the toe region of the shoe, in a doubled manner, having an inner layer and an outer layer. The outer layer of the upper of the shoe and the outer sole are attached to the shoe, with an upwardly-rising, cuplike edge of the outer sole lying between the inner layer and the outer layer of the upper of the shoe. A method for manufacturing this shoe, and a blank for a sole of the shoe, are also provided by the invention herein.Type: GrantFiled: July 1, 1988Date of Patent: October 31, 1989Assignee: Karhu-Titan OyInventors: Antti-Jussi Tiitola, Kari Pohja
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Patent number: 4858337Abstract: The present invention provides a rubber footwear vulcanizate to which an outsole may be separately affixed. The vulcanizate may be suitably manufactured from an assembly of an uncured rubber upper insole, welt and a vulcanized midsole. The inner and outer surfaces of the midsole may be suitably roughened, and the surface thereof which interfaces the uncured assembly may be precoated with an uncured rubber. The assembled uncured rubber footwear components may be vulcanized into a footwear product of unitary construction. The outer midsole surface permits a wide variety of outer soles of different compositions to be separately secured thereto.Type: GrantFiled: October 30, 1987Date of Patent: August 22, 1989Assignee: La Crosse Footwear, Inc.Inventor: Tarachand S. Barma
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Patent number: 4777740Abstract: A temperature-proof shoe formed by adhering a hollowed shape forming guide plate, which is circumferentially larger than an insole board that is the same size as the bottom surface of a form block, to the underside of a closed cell polyurethane foam layer at the sole portion of a shoe, and tucking in a leather facing in a manner to wrap up the forming guide plate with it. Also, by a roll-in outstitching applied to the leather facing and the outer circumference of the forming guide plate protruding to the outside from the leather facing of the instep portion, the temperature-proof shoes are free from the intrusion of water, satisfactory in heat-retaining property and excellent in design.Type: GrantFiled: March 6, 1987Date of Patent: October 18, 1988Inventor: Katsuji Akagi
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Patent number: 4703533Abstract: The present invention provides a rubber footwear vulcanizate to which there may be separately affixed an outsole. The vulcanizate may be suitably manufactured from an assembly of an uncured rubber upper, insole, welt and a vulcanized midsole base article. The inner and outer surfaces of the midsole base article may be suitably roughened and the surface interfacing the uncured assemblage precoated with an uncured rubber. The assembled uncured rubber footwear components may be vulcanized into a vulcanizate footwear product of a unitary construction. The outer surface midsole surface permits a wide variety of compositionally differing outer soles to be separately secured thereto.Type: GrantFiled: October 4, 1985Date of Patent: November 3, 1987Assignee: La Crosse Rubber Mills, Inc.Inventor: Tarachand S. Barma
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Patent number: 4662017Abstract: In a method for producing footwear, wherein the shaft and the shell sole of the footwear are glued together, the leather upper part of the footwear is first cut to size without the formation of a lasting fold, it is prepared and then roughened along a lower border thereof. After shaping of the tip, so as to conform to the last, the preformed shaft is stretched to measure, and a rear cap is simultaneously molded in. The shell sole, which is likewise glued, is placed on a glued border and pressed against at least the tip and heel and is also possibly sewn with a seam, after which a cover sole is placed and the shoe or footwear is completed.Type: GrantFiled: October 16, 1985Date of Patent: May 5, 1987Assignee: Ferd. Schafer & Sohne GmbH & Co. KGInventor: Ernst Gruber
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Patent number: 4616430Abstract: An article of footwear is made by partially forming the article so as to comprise at least an upper (11) lasted to a first insole (12), arranging the partially formed article to fully expose the upper (or inner) surface of the first insole, preferably by turning the partially formed article inside out, and moulding a shock absorbing or resilient second insole (15) of elastomeric, preferably visco-elastic, material onto the exposed surface of the lasting insole. An outsole (13) is applied to the article at some stage, preferably before the second insole is moulded in.Type: GrantFiled: June 25, 1984Date of Patent: October 14, 1986Assignee: E.T.F. Enterprises, Inc.Inventor: John McQuiggin
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Patent number: 4601078Abstract: A machine is disclosed for assembling box sole footwear semiautomatically. The machine provides for carrying out a number of operations through a completely new method of footwear assembly, thus affording significant labor savings and low investment costs. Specifically, this machine for semiautomatically assembling footwear having so-called box soles comprises, in essence, a former provided, at the sides, with a plurality of perforations connected to a suction pump and mounted on an arm adapted for pivotal movement about a horizontal axis. The machine further comprises a rubber plate and members cooperating with it which are adapted to press the sole edge against the sides of the former.Type: GrantFiled: April 19, 1984Date of Patent: July 22, 1986Inventor: Costantino Bertolaja
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Patent number: 4551929Abstract: A shoe in which a peripheral wall extends generally transverse to the ground-contacting and top sole surfaces, upwardly from the top sole surface along the periphery of its heel portion; the rearward portion of the shoe upper is attached to the inside of the sole wall; and the forward portion of the upper is attached only to the top surface of the sole.Type: GrantFiled: February 16, 1983Date of Patent: November 12, 1985Inventor: John Paris
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Patent number: 4494266Abstract: A shoe upper is directly joined to a shoe sole and contoured to a last by stitching a socklining to an upper and providing a mold engaging lip between the lower periphery of the upper and the stitched seam. The stitched socklining and upper are then mounted on a last. The lasted socklining and upper are mounted in a two piece, resilient upper mold and the upper mold is then mounted on a bottom mold having expanding, foaming resin therein with the mold engaging lip resiliently held between the edges of the upper and lower molds. An integrally joined shoe upper and sole are formed thereby.Type: GrantFiled: March 17, 1982Date of Patent: January 22, 1985Inventor: Hans Bartneck
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Patent number: 4455767Abstract: An improved shoe construction to be worn on a human foot includes a foot bag made of sheet-like material as a unitary structure. The foot bag comprises an inner sole for underlying and that conforms generally to at least the lower surfaces of the toes, sole and heel of the foot. The foot bag also includes an outer covering for overlying and that conforms generally to the upper surfaces of the toes and the instep of the foot and to the side surfaces of the heel of the foot. The inner sole and lower edges of the outer covering meet at and are joined together at at least a portion of the periphery of the inner sole. The shoe construction further includes a flexible outer sole member that has an upper foot bed surface for underlying and supporting and that conforms generally to the lower surfaces of the toes, sole and heel of the foot.Type: GrantFiled: April 29, 1981Date of Patent: June 26, 1984Assignee: Clarks of England, Inc.Inventor: Charles Bergmans
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Patent number: 4434518Abstract: A sport shoe in which the shoe sole is bonded to an insert layer during the formation of the shoe sole by injection-molding and the assembly of the shoe sole and the insert layer is secured to the shoe upper by an adhesive applied between the insert layer and the shoe upper.Type: GrantFiled: March 2, 1982Date of Patent: March 6, 1984Assignee: Daicel Chemical Industries, Ltd.Inventor: Morio Watanabe
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Patent number: 4407034Abstract: In a process for manufacturing shoes in which an out-sole moulded in a sole mould by a first injection operation is joined to a lasted upper by a second injection operation the mould cavity for the second injection operation is defined by the lasted upper, side moulds and the out-sole while positioned within its sole mould and the joint between the side moulds and the sole mould is sealed by engagement of a marginal portion of the out-sole with the facing surfaces of the side moulds. In the case where the out-sole is shaped so as to provide in the finished shoe an exposed welt face the desired seal is effected by engagement of an inner marginal portion of the out-sole with the facing surface of the side moulds so as to leave an outer marginal portion, which forms the welt face, outside of the seal. Where this outer marginal portion is formed with a pattern the arrangement is such as to provide a small clearance between this outer marginal portion and the facing surface of the side moulds.Type: GrantFiled: July 7, 1980Date of Patent: October 4, 1983Assignee: C & J Clark LimitedInventor: George T. Ralphs
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Patent number: 4398357Abstract: Outsole for a shoe including a first sole component molded of a relatively dense natural or synthetic rubber composition and having a cut-out shank region and a second sole component of a relatively less dense organic plastic material filling the cut-out shank region of the first sole component.Type: GrantFiled: June 1, 1981Date of Patent: August 16, 1983Assignee: Stride Rite International, Ltd.Inventor: Vijay K. Batra
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Patent number: 4369537Abstract: The invention relates to a method of footwear manufacture in which a footwear component for incorporation into an article of footwear is made. The footwear component is made by simultaneously forming from a piece of sheet material a rand extending at least part-way around an innersole, the rand and innersole being substantially coplanar whereby the rand forms a substantially lateral extension of the innersole. The rand may be integral with, separable from or separated from the innersole. The sheet material may be a single layer or may be multi-layered. A footwear article incorporating the the component of the invention is also contemplated.Type: GrantFiled: May 12, 1980Date of Patent: January 25, 1983Inventor: Noel H. Midgley
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Patent number: 4342160Abstract: A boot or shoe comprises a preformed portion and a portion which is molded in one piece on to the pre-formed portion and which includes the sole unit and those parts of the upper not constituted by the pre-formed portion. The pre-formed portion comprises side panels extending along each side of the shoe and a sock for underlying the foot, which sock interconnects the side panels and the side panels and sock may be made in one piece or in separate pieces which are fastened together, as by sewing, before the molded portion is molded on to the pre-formed portion. The molded portion is made from a plastics material, e.g. polyurethane, and the material does not overlap the inner face of the pre-formed portion but overlaps at least some of the marginal regions of the two side panels. The sock lies in the top surface of the sole unit. The two side panels may together extend also round the heel region of the upper and the plastics material may cover the outer face of the panels in the heel region.Type: GrantFiled: May 28, 1981Date of Patent: August 3, 1982Assignee: Clarks LimitedInventor: Lancelot P. Clark
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Patent number: 4335528Abstract: A sport shoe in which the shoe sole is bonded to an insert layer during the formation of the shoe sole by injection-molding and the assembly of the shoe sole and the insert layer is secured to the shoe upper by an adhesive applied between the insert layer and the shoe upper.Type: GrantFiled: February 12, 1980Date of Patent: June 22, 1982Assignee: Daicel Chemical Industries, Ltd.Inventor: Morio Watanabe
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Patent number: 4333192Abstract: This invention relates to a method of making boots for aquatic activities, more particularly for underwater diving. The method consists in the steps of forming a sock from a sheet of cellular elastomeric material and adhering an outsole assembly, including unvulcanized non-cellular rubber composition, to the sole portion and to the adjacent part of the upper of the sock all around the sole portion; placing the resulting unit in an oven; and vulcanizing under pressure said outsole assembly in situ on said sock at a maximum temperature below the degrading temperature of the cellular elastomeric material of the sock.Type: GrantFiled: December 7, 1979Date of Patent: June 8, 1982Inventors: Andre Stockli, Fernando Castaneda, Jean-Louis Stockli
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Patent number: 4333193Abstract: A shoe upper is directly joined to a shoe sole and contoured to a last by stitching a socklining to an upper and providing a mold engaging lip between the lower periphery of the upper and the stitched seam. The stitched socklining and upper are then mounted on a last. The lasted socklining and upper are mounted in a two piece, resilient upper mold and the upper mold is then mounted on a bottom mold having expanding, foaming resin therein with the mold engaging lip resiliently held between the edges of the upper and lower molds. An integrally joined shoe upper and sole are formed thereby.Type: GrantFiled: May 1, 1980Date of Patent: June 8, 1982Assignee: The United States Shoe CorporationInventor: Hans Bartneck
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Patent number: 4295238Abstract: A boot or shoe comprises a pre-formed portion and a portion which is moulded in one piece on to the pre-formed portion and which includes the sole unit and those parts of the upper not constituted by the pre-formed portion. The pre-formed portion comprises side panels extending along each side of the shoe and a sock for underlying the foot, which sock interconnects the side panels and the side panels and sock may be made in one piece or in separate pieces which are fastened together, as by sewing, before the moulded portion is moulded on to the pre-formed portion. The moulded portion is made from a plastics material, e.g. polyurethane, and the material does not overlap the inner face of the pre-formed portion but overlaps at least some of the marginal regions of the two side panels. The sock lies in the top surface of the sole unit. The two side panels may together extend also round the heel region of the upper and the plastics material may cover the outer face of the panels in the heel region.Type: GrantFiled: November 16, 1979Date of Patent: October 20, 1981Assignee: Clarks LimitedInventor: Lancelot P. Clark
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Patent number: 4272858Abstract: A moccasin shoe is proposed to be made by a method which comprises cutting the parts of an upper including a vamp, preparing the underside of the vamp for fusing, assembling the back part of the shoe, placing and fixing the thus formed and prepared upper, which does not include a plug, in a mold which is injected with polyurethane or other suitable thermoplastic material to form a sole which is bonded to the underside of the upper and also, by means of an upstanding peripheral flange to the side margins of the upper, removing the upper from the mold and thereafter stitching a plug portion to the upper margin of the vamp.Type: GrantFiled: January 23, 1979Date of Patent: June 16, 1981Assignee: K. Shoemakers LimitedInventor: John Hlustik
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Patent number: 4266314Abstract: At least two overlapping portions of plastic material are overmolded successively on a lining formed by a slipper so as to cover the slipper sole and upper at least to a partial extent. The method involves the following successive operations:overmolding of a plastic layer which covers the entire upper of the slipper;overmolding of a plastic stiffening reinforcement having greater rigidity than the previous layer and constituting a shell around the rear counter as well as a thin intermediate sole;addition of an outer wearing sole of molded plastic material.Type: GrantFiled: September 7, 1979Date of Patent: May 12, 1981Inventor: Rosette Londner epouse Ours
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Patent number: 4245406Abstract: A shoe and its method of manufacture in which an upper and preformed rubber outsole are joined by a foamed polyurethane, injection-molded midsole. The rubber outsole and polyurethane foam midsole combine to provide a lightweight and flexible shoe compressively conformable to the flexing foot and having strong traction and long wear.Type: GrantFiled: May 3, 1979Date of Patent: January 20, 1981Assignee: Brookfield Athletic Shoe Company, Inc.Inventors: David L. Landay, Alvan H. Wolf
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Patent number: 4236327Abstract: A unit sole construction, including a sole body of molded, rubbery material, and a welt extending along the body, the welt having an exposed upper wall portion, and a tongue portion extending from the wall portion into the body, the tongue being embedded in the body to secure the welt to the body.Type: GrantFiled: February 28, 1979Date of Patent: December 2, 1980Assignee: Jones & Vining, IncorporatedInventors: Robert D. Gorsche, Oscar H. Cloutier
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Patent number: 4176476Abstract: A cushion insole for shoes comprising a unitary combination material that includes a skin of wear material which is integral with a layer of resilient foam material, the foam material being wrapped around and adhered to a boardlike support which is relatively rigid and stiff. The insole may be adhered to a sole.Type: GrantFiled: April 14, 1978Date of Patent: December 4, 1979Assignee: Rogers CorporationInventor: Aarno A. Hassell
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Patent number: 4170802Abstract: There is provided a method of manufacturing a footwear item in which the molded outsole can be firmly affixed to the combination of an upper and an insole. A piece of prime rib tape is bonded to the underside of the insole, placed further inwardly from the edge than is the case in the Goodyear Welt construction, and stitched. The lower free edge of the upper is then stitched to the rib, roughened, and impregnated with bonding cement. Following this the outsole is molded against the underside of the insole so that the outsole contacts and bonds to the roughened region of the upper.Type: GrantFiled: November 7, 1977Date of Patent: October 16, 1979Inventor: Norman A. Roy
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Patent number: 4122574Abstract: An article of footwear and method of making the same which does not require adhesives on the upper to attach a smooth upper to an insole, outsole and foxing. A first strip having an outer surface of uncured elastomeric material is stitched to the lower edge of the upper and a second strip having inner and outer surfaces of uncured elastomeric material is stitched to the first strip at approximately a right angle thereto. An insole and an outsole are attached to the inner and outer surfaces, respectively, of the second strip.Type: GrantFiled: April 14, 1977Date of Patent: October 31, 1978Assignee: Uniroyal, Inc.Inventor: Victor L. Karalis
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Patent number: 4120104Abstract: A shoe, particularly for cross-country skiing, has an upper provided at a front tip region of the shoe with a layer of sheet material having an outer surface situated at the exterior of the shoe. This layer of sheet material has a lower edge region which extends outwardly away from an insole of the shoe. The shoe includes an outsole in the form of a casting made in a suitable mold or die. The above outwardly extending lower edge region of the layer of sheet material at the front tip of the upper is embedded in the outsole during the casting thereof so as to achieve in this way a secure connection between the shoe upper, particularly at its front tip region, and the outsole.Type: GrantFiled: March 3, 1977Date of Patent: October 17, 1978Assignee: Karku-Titan OyInventor: Raimo Juhani Lasmo
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Patent number: 4068395Abstract: A shoe construction which includes an upper formed of leather or like material not easily bonded to rubber, an inner sole and an outer sole in which shoe the upper is indirectly anchored into the inner sole and an outer rubber or rubber-like enclosing member seals any exposed joints in the sole structure. An intermediate strip formed of a textile material is secured to the lower portion of the leather or like upper and is lasted into the inner sole, such textile strip thus being compatible with the outer enclosing member in the sense that they can be firmly bonded by means of vulcanization or other adhesion effecting techniques.Type: GrantFiled: September 9, 1976Date of Patent: January 17, 1978Inventor: Jonas Senter
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Patent number: 4026044Abstract: An article of footwear wherein a rubber-like shoe base portion is joined to a shoe upper and vulcanized in conjunction therewith so as to form an integrally bonded construction while concurrently being molded so as to define at least the bottom surface pattern of the shoe sole, and with a foxing and, if required, a toe bumper portion adapted to be subsequently manually fastened to the circumference of the shoe sole in accordance with the desired aesthetic characteristics of the sport shoe.Type: GrantFiled: August 13, 1976Date of Patent: May 31, 1977Assignee: CITC Industries, Inc.Inventor: Jonas Senter
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Patent number: 4024652Abstract: A method for the formation of inserts in the edge of footwear or shoe soles made by means of injected plastic material, in which either the edge of the sole or the whole sole of the footwear is first moulded by injection, and successively at least a lateral recess is obtained in said edge of the sole itself, and thereafter a differently colored plastic material is injected into said recess for forming a lateral insert in the previously moulded edge of the footwear sole.Type: GrantFiled: April 28, 1975Date of Patent: May 24, 1977Inventor: Fosco Brilli
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Patent number: RE30672Abstract: A method for the formation of inserts in the edge of footwear or shoe soles made by means of injected plastic material, in which either the edge of the sole or the whole sole of the footwear is first moulded by injection, and successively at least a lateral recess is obtained in said edge of the sole itself, and thereafter a differently colored plastic material is injected into said recess for forming a lateral insert in the previously moulded edge of the footwear sole.Type: GrantFiled: February 12, 1979Date of Patent: July 14, 1981Inventor: Fosco Brilli