US4244121A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Waterproof boot with knee protection
Assignee: SERVUS RUBBER COMPANY Inc
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Filing: 1978-04-21
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Granted: 1981-01-13
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Expires: 1998-04-21
Abstract
Abstract A waterproof hip length boot and method of manufacture wherein the fabric lined upper leg portion is attached as a sheet around its lower edge to the upper edge of the lower boot portion by an adhesive such as urethane or another synthetic polymeric material having similar properties that provides circumferential and longitudinal bonded seams and also coats the fabric opposite the wearer's knee for internal abrasion protection.
Inventors
- 👤 Richard R. Adams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:24
CPC Classifications
A; A43; A43B; A43B23/00; A43B23/02; A43B23/06; A43B3/00; A43B3/02
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
76 words
In a boot of the type wherein a relatively flexible upper leg portion is secured upon a foot and lower leg portion around a circumferential seam, the improvement wherein said portions are adhesively secured at said seam by an adhesive layer that extends integrally upwardly from said seam at least within the forward part of said upper leg portion to provide when dry a flexible smooth tough internal reduced abrasion area directly opposite the wearer's knee.
Claim 2
Dependent Claim
76 words
In a boot of the type wherein a relatively flexible upper leg portion is secured upon a foot and lower leg portion around a circumferential seam, the improvement wherein said portions are adhesively secured at said seam by an adhesive layer that extends integrally upwardly from said seam at least within the forward part of said upper leg portion to provide when dry a flexible smooth tough internal reduced abrasion area directly opposite the wearer's knee.
Claim 3
Dependent Claim
25 words
In the boot defined in claim 1, said layer being thicker in said area opposite the wearer's knee than in said seam, for impact protection.
Claim 4
Dependent Claim
97 words
In the boot defined in claim 1, said upper portion comprising a fabric lined rubber sheet coated with said adhesive on the fabric side in contiguous bands along a side edge and its lower edge on the lining side and wrapped around the upper part of said lower portion so that the bottom of said lower edge band is disposed within said circumferential seam, the upper part of said lower edge band forms said reduced abrasion area and the side edges of the sheet are overlapped in a vertical seam with said side edge band between them.
Claim 5
Dependent Claim
17 words
The boot defined in claim 1, said adhesive being a layer or layers of synthetic polymeric material.
Claim 6
Dependent Claim
20 words
In the boot defined in claim 3, said adhesive being a layer or layers of urethane or other equivalent polymer.
Claim 7
Dependent Claim
97 words
In a boot of the type wherein a flexible fabric lined laminated fabric and rubber upper leg portion extends upwardly from a lower foot and lower leg portion lined with felt, the improvement wherein said portions are adhesively combined around a circumferential seam at the upper end of said lower leg portion by a continuous layer of synthetic polymeric adhesive material that extends as a coating over the fabric lining of said upper leg portion to provide when dry an internal fixed layer of flexible tough abrasion resistant material in the area directly opposite the wearer's knee.
Claim 8
Dependent Claim
97 words
In a boot of the type wherein a flexible fabric lined laminated fabric and rubber upper leg portion extends upwardly from a lower foot and lower leg portion lined with felt, the improvement wherein said portions are adhesively combined around a circumferential seam at the upper end of said lower leg portion by a continuous layer of synthetic polymeric adhesive material that extends as a coating over the fabric lining of said upper leg portion to provide when dry an internal fixed layer of flexible tough abrasion resistant material in the area directly opposite the wearer's knee.
Claim 9
Dependent Claim
16 words
In the boot defined in claim 5, said layer being of urethane or other equivalent polymer.
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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) | 1984-01-13 | 1984-07-14 | 1985-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-01-13 | 1988-07-14 | 1989-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-01-13 | 1992-07-14 | 1993-01-13 | $7700.00 | Window Closed / Lapsed |