US4709490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insole
Assignee: Carl Freudenberg KG
•
Filing: 1986-05-27
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Granted: 1987-12-01
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Expires: 2006-05-27
Abstract
Abstract An insole has a capillarily-conductive layer of hydrophobic fibers superimposed on a moisture-storing layer of absorbent fibers with a moisture-permeable bond between the layers.
Inventors
- 👤 Walter Fottinger
- 👤 Kurt Jorder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:42
CPC Classifications
A; A43; A43B; A43B17/00; A43B17/10; A43B17/102
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
133 words
A two layer insole including a moisture-storing layer and a capillarily-conductive layer, having a total thickness from about 1.5 to about 5 mm and a weight from about 200 g/m 2 to about 1200 g/m 2 , said moisture-storing layer constituting not less than about 60 and not more than about 95 weight percent of the total weight per square meter, and comprising absorbent fibers, said capillarily-conductive layer consisting of hydrophobic fibers superimposed on the moisture-storing layer and providing an opposite, exposed surface, the hydrophobic fibers defining pores therebetween for capillarily-conducting moisture from the exposed surface of the capillarily-conductive layer to the moisture-storing layer; and means for bonding the two layers together moisture permeably, said bonding means comprising some of the hydrophobic fibers of the capillarily-conductive layer which penetrate into the moisture-storing layer.
Claim 2
Dependent Claim
133 words
A two layer insole including a moisture-storing layer and a capillarily-conductive layer, having a total thickness from about 1.5 to about 5 mm and a weight from about 200 g/m 2 to about 1200 g/m 2 , said moisture-storing layer constituting not less than about 60 and not more than about 95 weight percent of the total weight per square meter, and comprising absorbent fibers, said capillarily-conductive layer consisting of hydrophobic fibers superimposed on the moisture-storing layer and providing an opposite, exposed surface, the hydrophobic fibers defining pores therebetween for capillarily-conducting moisture from the exposed surface of the capillarily-conductive layer to the moisture-storing layer; and means for bonding the two layers together moisture permeably, said bonding means comprising some of the hydrophobic fibers of the capillarily-conductive layer which penetrate into the moisture-storing layer.
Claim 3
Dependent Claim
22 words
The insole of claim 1, wherein the capillarily-conductive layer is one of a woven, knitted and nonwoven fabric of the hydrophobic fibers.
Claim 4
Dependent Claim
26 words
The insole of claim 1, wherein some of the hydrophobic fibers of the capillarily-conductive layer project generally perpendicularly from the exposed surface of the capillarily-conductive layer.
Claim 5
Dependent Claim
26 words
The insole of claim 2, wherein some of the hydrophobic fibers of the capillarily-conductive layer project generally perpendicularly from the exposed surface of the capillarily-conductive layer.
Claim 6
Dependent Claim
17 words
The insole of claim 1, wherein the bonding means comprises discontinuous deposits of adhesive between the layers.
Claim 7
Dependent Claim
17 words
The insole of claim 2, wherein the bonding means comprises discontinuous deposits of adhesive between the layers.
Claim 8
Dependent Claim
17 words
The insole of claim 3, wherein the bonding means comprises discontinuous deposits of adhesive between the layers.
Claim 9
Dependent Claim
17 words
The insole of claim 4, wherein the bonding means comprises discontinuous deposits of adhesive between the layers.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-11-30 | 1991-06-01 | 1991-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-11-30 | 1995-06-01 | 1995-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-11-30 | 1999-06-01 | 1999-12-01 | $7700.00 | Window Closed / Lapsed |