Abstract: A method for manufacturing a shoe, which includes the steps of:arranging an upper-insole assembly about a last;coupling an intermediate member comprising a toe portion and a heel portion to a lower region of the upper-insole assembly arranged about the last; andarranging the intermediate member in a mold and introducing plastic material into the mold so as to form an injected plastic material member which surrounds the intermediate member and which is integrally connected with both the intermediate member and the upper-insole assembly.
Abstract: A shoe includes an upper shell, a lining sleeve lining the upper shell, a sole, and a lower shell disposed between the sole and the upper shell. The lower shell consists of at least one waterproof strap which is made of a waterproof material and which has a bottom margin connected to the sole, and a top margin to connect with the upper shell and the lining sleeve. The top margin is bifurcated to form an upwardly extending water draining part and an upwardly extending sealing part. The sealing part extends inwardly of the water draining part and has a height approximately equal to or greater than that of the water draining part. The water draining part extends inwardly of and is sewn to the bottom open ends of said upper shell and said lining sleeve, thus forming a stitch joint. The sealing part is sealingly bonded to the stitch joint.
Abstract: A waterproof foot covering has a breathable upper enclosure of an upper, a waterproof inner lining sleeve to line the upper enclosure, and a waterproof lower enclosing shell of a lower. The bottom open end of the upper enclosure, the bottom open end of the inner lining sleeve and the upper open end of the lower enclosing shell are interconnected together by sewing, thereby forming a stitched seam. A waterproof seam-sealing member is disposed inwardly of the stitched seam. The seam-sealing member is attached to the inner surfaces of the inner lining sleeve and the lower enclosing shell, whereby water-permeation through the stitched seam from a location between the inner lining sleeve and the upper enclosure to the exterior of the upper enclosure is permitted while water-permeation through the stitched seam to the interior of the inner lining sleeve and the lower.
Abstract: A process which serves to seal and waterproof the outsole-side end area of a waterproof shoe shaft and/or to pad the outsole-side end of a shoe by putting a liquid, curable, filling material into the space between the insole and outsole is described. The outsole is provided with an input opening for putting in the filling material. The outsole is adhered to the shaft only in a circumferential area and in such a way that the outsole-side end area of the shaft remains unadhered. The liquid filling material is put in through the input opening, between the insole and the outsole, from where it flows into the outsole-side end area of the shaft due to its good flowability. The liquid material contains polyurethane precursor ingredients which react to form a foam polyurethane.
Abstract: This invention relates to folding shoes made with the use of shape-memory resins at least in their instep or, where a shaft is present, at least in their instep and shaft and transformable by folding into a given shape or restorable from the folded shape to the memorized shape by heating at a temperature above the glass transition temperature and below the melting temperature of said shape-memory resins and to a process for manufacturing said folding shoes. The folding shoes of this invention are of practical value as they can be restored to the memorized shape at the time of use, can be conveniently stored away or carried about in the fixed folded shape of reduced volume while not in use, and can be manufactured readily by the process of this invention.
Abstract: A method of making a boot having an upper, a lower and a sole is disclosed. The method includes the step of connecting the lower to the sole in a water-tight relationship only after the lower is connected to the upper.
Abstract: A rubber footwear product and method of making such products is provided. The rubber footwear product includes a molded rubber midsole having an integrally formed raised rubber welt portion around its periphery. By molding in a compression mold, injection mold, or the like, the midsole and welt may be formed in a variety of designs and will be accurately formed in the desired size and shape. The molded midsole is made of substantially cured rubber, and is secured to an uncured rubber upper by applying an uncured rubber coating onto the midsole and then vulcanizing to form a unitary rubber footwear subassembly. To this subassembly may separately be secured a variety of compositionally different outsoles made of various materials, and having various colors, designs, and specific utilities. The outsole may be attached to the subassembly by vulcanization, by conventional shoemaking cementing processes using adhesive compositions, or by injection molding directly onto the molded midsole.
Abstract: The method for obtaining a shoe entails the execution of a nonrigid sock or upper, which is tensioned by means of an adapted last to allow the coupling thereto of an intermediate member on which multiple through holes are formed and which has an optional cavity at the arch region. Then the intermediate member is placed inside a mold and at least one first injection or pouring of preferably but not necessarily compact thermoplastic or thermosetting or expandable material is performed, so as to affect at least the intermediate structural element to obtain a semifinished item below which a sole is associable.
Abstract: 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).
Abstract: 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).
May 22, 1991
Date of Patent:
February 15, 1994
LOWA-Schuhfabrik Lorenz Wagner GmbH & Co. KG
Abstract: The present invention provides a rubber footwear product having superior heel support as compared with conventional rubber footwear products, and a method of manufacturing such a product. More particularly, the invention provides a rubber footwear product in which a heel counter is trapped or embedded within the vulcanizate to improve the support provided to the wearer's foot.
Abstract: Footwear with an improved arch support including an exposed gripping surface through a window in the outer sole is presented. The arch support includes a heel flange and brace which stabilizes the support between the inner and outer soles and the serrated gripping surface provides the wearer with needed traction for activities such as climbing ladders, horseback riding or the like.
Abstract: The present disclosure relates to a water proof snow boot and the method of manufacturing the same. A water-proof plastic intermediate member is disposed between the outer leather covering and the inner lining of the boot to prevent water or moisture from coming into the boot through tiny pores of the leather covering by permeation, thereby causing discomfort of the wearer's foot.
Abstract: A process for applying a flocking fiber to a cloth surface of a shoe includes the step of spraying a clean dry cloth shoe with an adhesive, which adheres to the cloth substrate without excess penetration, which remains pliable, and is not water soluble when set. A short set time is desirable, and then flock fibers suitable for application are carried into a charge in an electrostatic field. A conventional flocking chamber is used, voltage is applied to the electric field, and the flock fibers are applied so that they adhere to the adhesive surface under controlled conditions. The shoe is dried in a drying oven, and then it is ready for use. The flocking process can use adhesives that are colored, flock that is colored, and the flock can be applied in any desired pattern because of the use of the adhesive for causing the flock material to adhere to the cloth surface.
Abstract: The invention relates to a method of waterproofing an article of footwear, for example, a boot, and the article of footwear produced therefrom. To waterproof the article a solution of effective amounts of a polymeric material and solvent is applied to inner surface areas of the article sought to be waterproofed. The solution is then substantially dried to produce a layer of a waterproof polymeric material over the surface of selected areas of the inside of the article. Conveniently and efficiently the layer of solution may be applied to the inner surface of the article by transferring a quantity of the solution into the article until the article is filled to the desired level (e.g. upper ankle level) and therafter orienting the article appropriately to cause the solution to spread to all inner surface areas of the foot portion of the article. Following this the excess solution is removed from the article by tilting the article causing the excess solution to drain out of the article.
Abstract: 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.
Abstract: 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.
December 7, 1979
Date of Patent:
June 8, 1982
Andre Stockli, Fernando Castaneda, Jean-Louis Stockli
Abstract: A method for manufacturing boots of rubber or the like wherein the successive boot building operations are carried out on lasts carried by a movable conveyor indexed to and through stations spaced along a line. An elastic sock is mounted on each last at the first station, an adhesive or a chemical reactant such as a coagulant solution are applied to the sock, latex dip coatings are applied, and binding, foxing, toe caps, insulation and the like applied before vulcanization and final lacquer spraying and trimming at indexed stations.
Abstract: In a first overmolding operation, a starting element in the form of a high-cut sock lining of flexible material such as leather is coated with a composition which permits bonding and is then overmolded with a part forming an instep shank for the sole, a rear stiffening counter and a heel seat or heel body. In a second overmolding operation, the shoe is overmolded on both the upper and the body of the sole with an outer coating which consists of relatively flexible plastic material. Potential applications of the shoe include sports such as ice skating, skiing, mountaineering and fooball.
Abstract: A molded athletic boot, a reinforcing insert assembly for a molded athletic boot and a method of making the boot are described. A cloth-like insert is mounted on a last and a mold is then closed about the last. A castable material, such as polyurethane is injected into the mold so that it impregnates and encapsulates the insert prior to solidifying to form an athletic boot having great tensile strength and rigidity. The described insert assembly comprises a porous, elastic, sock-like element which fits over the last. A layer of a woven or knitted polyamide and a layer of a nonwoven polyamide are secured inside the sock-like element at selected locations.