US3834047A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shoe construction to provide built-in shock absorber and reduce excessive heel wear
Assignee: Individual
•
Filing: 1973-09-21
•
Granted: 1974-09-10
•
Expires: 1993-09-21
Abstract
Abstract An improved shoe construction is disclosed wherein the top surface of the inner sole has a local excavation in its posterolateral aspect to accommodate the calcaneal projection. The local excavation can be filled with a resilient material such as rubber which can be flush with the top surface of the inner sole over the excavated area or project thereabove.
Inventors
- 👤 A Schenker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:28
CPC Classifications
A; A43; A43B; A43B21/00; A43B21/24; A43B21/32; A43B7/00; A43B7/14; A43B7/28
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
49 words
In a shoe the improvement which comprises a local excavation in the tip surface of the inner sole, in its postero-lateral aspect, to accommodate the calcaneal projection, said local excavation being filled with resilient material such as foam rubber which projects above the top surface of the inner sole.
Claim 2
Dependent Claim
49 words
In a shoe the improvement which comprises a local excavation in the tip surface of the inner sole, in its postero-lateral aspect, to accommodate the calcaneal projection, said local excavation being filled with resilient material such as foam rubber which projects above the top surface of the inner sole.
Claim 3
Dependent Claim
18 words
Shoe of claim 1 which includes a separate seconDary sole covering the entire surface of said inner sole.
Claim 4
Dependent Claim
25 words
Shoe of claim 2 having a resilient mass integral with the secondary sole in its postero-lateral aspect, coinciding with and corresponding to said local excavation.
Claim 5
Dependent Claim
34 words
Shoe of claim 2 wherein said secondary sole is provided with a localized thickening of resilient material on its underside approximately in the middle thereof transversely to accommodate the transverse arch of the foot.
Claim 6
Dependent Claim
12 words
Shoe of claim 1 wherein said local excavation is a wedge-shaped cutaway.
Claim 7
Dependent Claim
12 words
Shoe of claim 1 wherein said local excavation is an arcuate cutaway.
Claim 8
Dependent Claim
12 words
Shoe of claim 1 wherein said local excavation is a complete cutaway.
Claim 9
Dependent Claim
11 words
Shoe of claim 1 wherein said local excavation is cup shaped.
Claim 10
Dependent Claim
22 words
Shoe of claim 1 wherein said resilient material is a separable resilient mass of varying density for insertion into said local excavation.
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) | 1977-09-09 | 1978-03-11 | 1978-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-09 | 1982-03-11 | 1982-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-09 | 1986-03-11 | 1986-09-10 | $7700.00 | Window Closed / Lapsed |