Patent US4524529A successfully refreshed from Google Patents.
US4524529A
Expired / Lapsed
US
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Insole for shoes
Assignee: JP Bemberg AG
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Filing: 1983-08-24
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Granted: 1985-06-25
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Expires: 2003-08-24
Abstract
Abstract An insole for shoes, with which, after having made a connection, preferably by sewing, between the insole and the shoe upper, a body of polyurethane forming the running sole and/or the foot bed is applied to the bottom side of the insole by foaming operation, consists of a fleece substantially formed of synthetic fibres and having arranged therein a reinforcing insert approximately extending in parallel relation to the upper side of the insole. At least the upper portion of the fleece, which is adjacent the upper side of the insole on which rests the foot, is impregnated with a dispersion or emulsion containing at least 1 percent by weight of hollow microspheres, the thin shell of which consists of a vinylidene chloride copolymer and the hollow core of which contains a gas. The hollow microspheres can already be present in the dispersion or emulsion prior to the impregnating step, it is, however, also possible to provide within the dispersion or emulsion compact particles from which are, after the impregnating step, formed the hollow microspheres in situ by supplying heat.
Inventors
- 👤 Helmut Schaefer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:44
CPC Classifications
A; A43; A43B; A43B13/00; A43B13/02; A43B13/10; A43B13/12; A43B13/38
Claims Analysis
Total Claims: 34
Claim 1
Independent Claim
111 words
A shoe insole assembly comprising: an insole consisting of a fleece substantially formed of synthetic fibers and having arranged therein a reinforcing insert extending in approximately parallel relation to an upper side of the insole supporting the foot, and at least at an upper portion of the fleece which adjacent to the upper side of the insole supporting the foot is a dispersion or emulsion containing at least one percent by weight of hollow microspheres impregnating said fleece, said microspheres having thin shells of a vinylidene chloride copolymer and a hollow core of which contains a gas; and a body of foam polyurethane bonded to a bottom side of said insole.
Claim 2
Dependent Claim
111 words
A shoe insole assembly comprising: an insole consisting of a fleece substantially formed of synthetic fibers and having arranged therein a reinforcing insert extending in approximately parallel relation to an upper side of the insole supporting the foot, and at least at an upper portion of the fleece which adjacent to the upper side of the insole supporting the foot is a dispersion or emulsion containing at least one percent by weight of hollow microspheres impregnating said fleece, said microspheres having thin shells of a vinylidene chloride copolymer and a hollow core of which contains a gas; and a body of foam polyurethane bonded to a bottom side of said insole.
Claim 3
Dependent Claim
21 words
The assembly defined in claim 1 wherein the entire fleece is permeated with said dispersion or emulsion containing the hollow microspheres.
Claim 4
Dependent Claim
50 words
The assembly defined in claim 1 wherein only the upper portion of the fleece which is adjacent the upper side of the insole supporting the foot is permeated with said dispersion or emulsion containing the hollow microspheres, whereas the bottom portion of the fleece is anchored within the polyurethane body.
Claim 5
Dependent Claim
40 words
The assembly defined in claim 3 wherein the upper portion of the fleece being adjacent the upper side of the insole supporting the foot is permeated up to the reinforcing insert with said dispersion or emulsion containing the hollow microspheres.
Claim 6
Dependent Claim
26 words
The assembly defined in claim 1 wherein at least the upper half of the fleece is permeated with said dispersion or emulsion containing the hollow microspheres.
Claim 7
Dependent Claim
15 words
The assembly defined in claim 1, further comprising a shoe upper stitched to said insole.
Claim 8
Dependent Claim
13 words
The assembly defined in claim 1 wherein the fleece consists of polyester fibers.
Claim 9
Dependent Claim
13 words
The assembly defined in claim 1 wherein the fleece consists of polyamide fibers.
Claim 10
Dependent Claim
16 words
The assembly defined in claim 1 wherein the fleece consists of fibers of an acrylic polymer.
Claim 11
Dependent Claim
20 words
The assembly defined in claim 1, wherein the fleece has a basis weight between 120 and 360 g/m 2 .
Claim 12
Dependent Claim
20 words
The assembly defined in claim 10 wherein the fleece has a basis weight between 140 and 200 g/m 2 .
Claim 13
Dependent Claim
21 words
The assembly defined in claim 1 wherein the fleece consists of between 55 and 87 percent by weight of the insole.
Claim 14
Dependent Claim
18 words
The assembly defined in claim 1 wherein the reinforcing insert consists of a woven fabric of synthetic fibers.
Claim 15
Dependent Claim
18 words
The assembly defined in claim 1, wherein the reinforcing insert consists of a knitted fabric of synthetic fibers.
Claim 16
Dependent Claim
20 words
The assembly defined in claim 1 wherein the reinforcing insert consists of a fabric of woven fillets of synthetic fibers.
Claim 17
Dependent Claim
26 words
The assembly defined in claim 1 wherein the reinforcing insert consists of polypropylene fibers and has a basis weight between 72 and 165 g/m 2 .
Claim 18
Dependent Claim
26 words
The assembly defined in claim 16 wherein the reinforcing insert consists of polypropylene fibers and has a basis weight between 85 and 115 g/m 2 .
Claim 19
Dependent Claim
18 words
The assembly defined in claim 1 wherein the fibers of the fleece partially extend through the reinforcing insert.
Claim 20
Dependent Claim
17 words
The assembly defined in claim 1 wherein the fleece has a dispersion of synthetic plastics material thereon.
Claim 21
Dependent Claim
15 words
The assembly defined in claim 1 wherein the fleece is impregnated with a polymer dispersion.
Claim 22
Dependent Claim
20 words
The assembly defined in claim 1, wherein the fleece is permeated with a dispersion on the basis of natural rubber.
Claim 23
Dependent Claim
20 words
The assembly defined in claim 1 wherein the fleece is permeated with a dispersion on the basis of synthetic rubber.
Claim 24
Dependent Claim
19 words
The assembly defined in claim 1 wherein the fleece is permeated with a dispersion of a vinyl acetate copolymer.
Claim 25
Dependent Claim
17 words
The assembly defined in claim 1 wherein the fleece is permeated with a dispersion of thermosetting properties.
Claim 26
Dependent Claim
17 words
The assembly defined in claim 24 wherein the fleece is impermeated with a dispersion of melamine resins.
Claim 27
Dependent Claim
17 words
The assembly defined in claim 24 wherein the fleece is impermeated with a dispersion of aminoplastic resins.
Claim 28
Dependent Claim
17 words
The assembly defined in claim 1 wherein the fleece is impermeated with a dispersion of thermoplastic properties.
Claim 29
Dependent Claim
18 words
The assembly defined in claim 27 wherein the fleece is impermeated with a dispersion of a polyacrylate ester.
Claim 30
Dependent Claim
19 words
The assembly defined in claim 1 wherein the diameter of the hollow microspheres is between 0.01 and 1 mm.
Claim 31
Dependent Claim
14 words
The assembly defined in claim 1 wherein hollow microspheres of different diameter are present.
Claim 32
Dependent Claim
24 words
The assembly defined in claim 1 wherein the insole has its upper side, on which rests the foot, covered with a laminar textile material.
Claim 33
Dependent Claim
18 words
The assembly defined in claim 1 wherein the insole has an overall thickness between 2 and 4.5 mm.
Claim 34
Dependent Claim
31 words
The assembly defined in claim 1 wherein the insole overall basis weight is, for an insole having a thickness of 4.5 mm and in dry condition, below 950 g/m 2 .
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-06-24 | 1988-12-24 | 1989-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-06-24 | 1992-12-24 | 1993-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-06-24 | 1996-12-24 | 1997-06-25 | $7700.00 | Window Closed / Lapsed |