US4580356A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removable insoles
Assignee: Individual
•
Filing: 1983-07-18
•
Granted: 1986-04-08
•
Expires: 2003-07-18
Abstract
Abstract The removable insole for shoes consists of a thin strip (1) of plastic foam, such as polyolefin foam, in the general shape of the foot. This strip (1) has grooves (6, 7, 8) which are located at the edge of the insole or delimiting zones (3, 4, 5) on the insole which are of different thicknesses, and thus of different densities. The edge of the insole is bevelled (9, 10). The insole (1) gradually becomes permanently deformed on contact with the foot and finally adopts the profile thereof. The grooves (6, 7, 8) allow the insole to change shape more easily.
Inventors
- 👤 Loic David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:43
CPC Classifications
A; A43; A43B; A43B17/00; A43B17/14
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
142 words
A removable insole for shoes, having an original profile which is of a first shape with two planar sides and consisting of a thin continuous strip of foam plastic in the general shape of a foot, said foam plastic having the property of becoming permanently deformed on contact between one of its sides and a foot having toes and an arch and finally adopting the profile thereof, said strip having a continuous groove along at least part of its border and inside the perimeter defined by said border and an arc-shaped groove which diverges at one end from said continuous groove and defines two zones, one of which corresponds to the arch of the foot, said grooves being configued and dimensioned to allow the insole to change shape more easily and said zones being of different densities with respect to each other.
Claim 2
Dependent Claim
142 words
A removable insole for shoes, having an original profile which is of a first shape with two planar sides and consisting of a thin continuous strip of foam plastic in the general shape of a foot, said foam plastic having the property of becoming permanently deformed on contact between one of its sides and a foot having toes and an arch and finally adopting the profile thereof, said strip having a continuous groove along at least part of its border and inside the perimeter defined by said border and an arc-shaped groove which diverges at one end from said continuous groove and defines two zones, one of which corresponds to the arch of the foot, said grooves being configued and dimensioned to allow the insole to change shape more easily and said zones being of different densities with respect to each other.
Claim 3
Dependent Claim
30 words
An insole as in claim 1, wherein said groove along at least a part of said border defines a shape which corresponds with the inside sole area of said shoe.
Claim 4
Dependent Claim
25 words
An insole as in claim 2, wherein said zones are of at least two different heights and densities, the higher zone having the lower density.
Claim 5
Dependent Claim
13 words
An insole according to claim 1, in which said zones have different thicknessess.
Claim 6
Dependent Claim
18 words
An insole according to claim 1, in which said thin strip is the product of a pressing operation.
Claim 7
Dependent Claim
14 words
An insole according to claim 1, which is the product of a preheating operation.
Claim 8
Dependent Claim
35 words
An insole according to claim 1 in which the side of said insole which comes into contact with the foot is covered with a thin layer of a material which absorbs perspiration and eliminates odors.
Claim 9
Dependent Claim
12 words
An insole according to claim 1, in which the edges are bevelled.
References Cited (Backward Citations)
US873775A
Cited
US2713215A
Cited
US3084695A
Cited
US3892077A
Cited
FR2335171A1
Cited
US4115934A
Cited
GB2011243A
Cited
US4186499A
Cited
US4317298A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-04-07 | 1989-10-07 | 1990-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-07 | 1993-10-07 | 1994-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-07 | 1997-10-07 | 1998-04-08 | $7700.00 | Window Closed / Lapsed |