Boots – shoes – and leggings – Sole-attaching means – Rubber
Patent
1998-08-04
2000-03-14
Sewell, Paul T.
Boots, shoes, and leggings
Sole-attaching means
Rubber
36 44, 36 55, 36 12, A43C 1300
Patent
active
060355557
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates to a waterproof shoe structure comprising at least a part of a shoe and having an outer layer (1), a lining (2) with a functional layer that is waterproof but permeable to water vapor, an insole (3), and an adhesive-applied outsole.
2. Description of Related Art
A shoe with such a structure is described in the unpublished German patent application with reference number 195 13 413.3-26. This shoe is manufactured in an adhesive lasting process and serves to increase wearer comfort. With this type of shoe it is recommended to affix outsoles with adhesive and as well to apply them by injection molding.
In the past, the development of waterproof shoes whose comfort is increased by a functional layer that is waterproof but permeable to water vapor, and that as a rule is integrated into the lining layer, was mainly one in connection with shoes having an outsole that is produced by injection molding, because the molding material used in the production of the outsoles guaranteed of its own accord good watertightness from underneath and allowed a good bond with the outer material.
A shoe with injection molded outsole is known from EP-A-0 544 270 in which the lower end of the lining is turned in and arranged parallel to the outsole. The outer edge of the insole is sewn to the terminating edge of the lining. A sole is molded onto this structure. To ensure shape stability during manufacture, the lining in the lower area is glued to the outer layer. This design cannot be readily applied to shoes with adhesive-applied sole, since the forces required to apply the sole are considerably greater than when injection molding an outsole, and the lining is therefore subjected to considerable stress, possibly leading to tears in the waterproof, water-vapor permeable functional layer in the lining and to leakage.
SUMMARY OF THE INVENTION
The object of the present invention is to provide an additional waterproof shoe structure with an adhesive-applied outsole, which structure is not manufactured only as an adhesive lasting process. In particular, the invention has the objective of providing a shoe structure in a sewn style (Strobel process) that can be fitted with an adhesive-applied outsole.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention will be illustrated in greater detail by means of the following figures.
FIG. 1 shows a bottom view of a shoe in accordance with the invention, without an outsole;
FIG. 2 shows the cross-section B--B of the shoe according to FIG. 1;
FIG. 3 shows a bottom view of an additional shoe in accordance with the invention, also with no outsole;
FIG. 4 shows a bottom view of an additional shoe in accordance with the invention, again without an outsole;
FIG. 5 shows the cross-section A--A of the shoe according to FIG. 4; and
FIG. 6 shows a bottom view of a shoe in which the front part of the shoe is provided with the shoe structure of the invention while the rear part of the shoe, toward the heel, is produced using an adhesive lasting process.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
The object of the invention is satisfied by a waterproof shoe structure comprising at least a part of a shoe, having an outer layer, a lining with a functional layer that is waterproof but permeable to water vapor, an insole, and an outsole, whereby the lining containing the functional layer has a lower end area that is turned in and arranged parallel to the outsole, the turned-in end area lies in a common plane with the insole and has an inner edge, the outer edge of the insole runs at least approximately parallel to the inner edge of the turned-in end area, and the insole is joined to the turned-in end area, the structure being characterized in that the outsole is applied by adhesive over the surface at least to the turned-in end area of the functional layer of the lining, the lower end of the upper layer is arranged substantially perpendicular to the outsole and at least in the shank area is joined to a retainer arranged parallel to th
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patent: 5628127 (1997-05-01), Notzold
patent: 5678326 (1997-10-01), Pavelescu
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patent: 5779834 (1998-07-01), Pavelescu et al.
Haderlein Manfred
Pavelescu Liviu-Mihai
Akzo Nobel NV
Mohandesi J.
Sewell Paul T.
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