US4999072A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making an insole product
Assignee: MILLIKEN RESEARCH Corp A CORP OF
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Filing: 1988-03-04
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Granted: 1991-03-12
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Expires: 2008-03-04
Abstract
Abstract A film encapsulated, gas cushion insole product which maintains its shape by means of a core fabric therein to which a desiccant may be added, if desired. To contain the gas for long periods of time, the film contains a layer of polyvinylalcohol.
Inventors
- 👤 Louis Dischler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:16
CPC Classifications
A; A43; A43B; A43B17/00; A43B17/02; A43B17/03; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1039; Y10T156/1052; Y10T156/1054; Y10T156/1062; Y10T156/1074
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
114 words
The method of manufacturing an insole product comprising the steps of: die-cutting a core fabric, die-cutting at least two barrier films to a size slightly larger than the core fabric, treating the core fabric with a desiccant prior to encapsulation between the barrier films, placing the core fabric between at least two of the die cut barrier films, sealing the edges of the barrier films around the core fabric to encapsulate the same, punching a hole in one of the barrier films, delivering a low molecular weight gas at a pressure in the range of 10-50 p.s.i.g. into the insole product through the hole and sealing the hole previously punched in the barrier film.
Claim 2
Independent Claim
114 words
The method of manufacturing an insole product comprising the steps of: die-cutting a core fabric, die-cutting at least two barrier films to a size slightly larger than the core fabric, treating the core fabric with a desiccant prior to encapsulation between the barrier films, placing the core fabric between at least two of the die cut barrier films, sealing the edges of the barrier films around the core fabric to encapsulate the same, punching a hole in one of the barrier films, delivering a low molecular weight gas at a pressure in the range of 10-50 p.s.i.g. into the insole product through the hole and sealing the hole previously punched in the barrier film.
Claim 3
Dependent Claim
16 words
The method of claim 1 wherein the desiccant is applied after the core fabric is die-cut.
Claim 4
Dependent Claim
18 words
The method of claim 2 wherein the edges of the die-cut core fabric are singed prior to encapsulation.
Claim 5
Dependent Claim
19 words
The method of claim 2 wherein a cover fabric is laminated to the barrier film prior to die-cutting thereof.
Claim 6
Dependent Claim
15 words
The method of claim 1 wherein said pressure is in the range of 20-30 p.s.i.g.
Claim 7
Dependent Claim
12 words
The method of claim 5 wherein said pressure is about 27 p.s.i.g.
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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) | 1994-03-11 | 1994-09-10 | 1995-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-03-11 | 1998-09-10 | 1999-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-03-11 | 2002-09-10 | 2003-03-12 | $7700.00 | Window Closed / Lapsed |