US5095570A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing an insole
Assignee: Orthofeet Inc
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Filing: 1991-05-10
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Granted: 1992-03-17
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Expires: 2011-05-10
Abstract
Abstract A method and apparatus for producing an insole for a foot including defining a flexible insole housing in which is disposed a deformable material impregnated with an uncured resin, activating the resin for initiating curing thereof, locating the foot on the insole housing and allowing the resin to harden and thus, to preserve the configuration defined by the bottom of the foot.
Inventors
- 👤 Aharon Bar
- 👤 Michael Bar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:42
CPC Classifications
A; A43; A43B; A43B17/00; A43B17/14; A43B7/00; A43B7/14; A43B7/28
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
127 words
A method for producing an insole for a foot comprising the following steps: a. defining an insole housing in which is disposed a predetermined amount of an uncured expandable resin, irrespective of the given contour and arch height; b. disposing in said housing a container containing a curing agent; c. forming at least one opening in said container, allowing said curing agent to escape via said at least one opening, to contact said resin and to activate said resin; d. locating the foot on said insole housing; e. allowing said resin, when activated to expand within said insole housing so as to conform to the given contour and arch height; f. allowing said resin to harden and preserve the configuration defined by the bottom of the foot.
Claim 2
Independent Claim
127 words
A method for producing an insole for a foot comprising the following steps: a. defining an insole housing in which is disposed a predetermined amount of an uncured expandable resin, irrespective of the given contour and arch height; b. disposing in said housing a container containing a curing agent; c. forming at least one opening in said container, allowing said curing agent to escape via said at least one opening, to contact said resin and to activate said resin; d. locating the foot on said insole housing; e. allowing said resin, when activated to expand within said insole housing so as to conform to the given contour and arch height; f. allowing said resin to harden and preserve the configuration defined by the bottom of the foot.
Claim 3
Dependent Claim
18 words
A method according to claim 1 and wherein said forming step includes the step of puncturing said container.
Claim 4
Dependent Claim
18 words
A method according to claim 1 and wherein said curing agent is maintained under pressure in said container.
Claim 5
Dependent Claim
23 words
A method according to claim 1 and wherein said at least one opening is formed in said container by application of external pressure.
Claim 6
Dependent Claim
23 words
A method according to claim 4 and wherein said application of external pressure is provided by a person stepping onto said insole housing.
Claim 7
Dependent Claim
50 words
A method according to claim 1 wherein said step of defining also comprises the step of wrapping an elongate member around said container and extending said elongate member outside said insole housing and wherein said step of forming comprises the step of rupturing said container by pulling said elongate member.
Claim 8
Dependent Claim
25 words
A method according to claim 1 and wherein said container located within said insole housing is contained within another container whose upper layer is perforated.
Claim 9
Dependent Claim
16 words
A method according to claim 1 and wherein said resin comprises a moisture cured prepolymer polyurethane.
Claim 10
Dependent Claim
22 words
A method according to claim 1 and also comprising the step of storing said insole housing in a moisture impermeable storage enclosure.
Claim 11
Dependent Claim
30 words
A method according to claim 1 and also comprising the step of defining at least one opening in said insole housing for allowing resin curing reaction products to escape therethrough.
Claim 12
Dependent Claim
13 words
A method according to claim 1 and wherein said resin comprises polyurethane resin.
Claim 13
Dependent Claim
18 words
A method according to claim 1 and also comprising the step of inserting said insole into a shoe.
Claim 14
Dependent Claim
23 words
A method according to claim 1 and wherein said step of defining comprises the step of integrally forming said insole within a shoe.
Claim 15
Dependent Claim
15 words
A method according to claim 1 and wherein said curing agent comprises a protic compound.
Claim 16
Dependent Claim
15 words
A method according to claim 1 and wherein said insole housing comprises a deformable material.
Claim 17
Dependent Claim
22 words
A method according to claim 1 and wherein said resin, when activated, expands into spaces defined by cells of said deformable material.
References Cited (Backward Citations)
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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) | 1995-03-17 | 1995-09-16 | 1996-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-03-17 | 1999-09-16 | 2000-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-03-17 | 2003-09-16 | 2004-03-17 | $7700.00 | Window Closed / Lapsed |