US4130947A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sole for footwear, especially sports footwear
Assignee: Adidas Fabrique de Chaussures de Sport SARL
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Filing: 1977-07-28
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Granted: 1978-12-26
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Expires: 1997-07-28
Abstract
Abstract A sole for footwear, especially sports footwear, has a lower layer provided with transverse ribs and an upper shock-absorbing layer. The lower layer may be of natural rubber of Shore hardness from 55 to 60 and the upper layer of lower-density natural or synthetic rubber of Shore hardness about 40.
Inventors
- 👤 Francis Denu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:38
CPC Classifications
A; A43; A43B; A43B13/00; A43B13/02; A43B13/12; A43B13/14; A43B13/22; A43B13/223
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
87 words
A sole for footwear comprising a lower layer of abrasion-resistant material having a lower surface comprising a plurality of downwardly-projecting ribs to touch the ground, the ribs being substantially perpendicular to the longitudinal axis of the footwear, and an upper layer of impact-absorbing material attached to the lower layer, and in which the upper surface of the lower layer is provided with grooves corresponding to the ribs, the grooves extending to the sides of the sole and being occupied by corresponding downwardly-projecting portions of the upper layer.
Claim 2
Dependent Claim
87 words
A sole for footwear comprising a lower layer of abrasion-resistant material having a lower surface comprising a plurality of downwardly-projecting ribs to touch the ground, the ribs being substantially perpendicular to the longitudinal axis of the footwear, and an upper layer of impact-absorbing material attached to the lower layer, and in which the upper surface of the lower layer is provided with grooves corresponding to the ribs, the grooves extending to the sides of the sole and being occupied by corresponding downwardly-projecting portions of the upper layer.
Claim 3
Dependent Claim
22 words
A sole according to claim 1, in which the abrasion-resistant material is natural rubber having a Shore hardness from 55 to 60.
Claim 4
Dependent Claim
21 words
A sole according to claim 1, in which the lower layer has a substantially uniform thickness from 2 to 6 mm.
Claim 5
Dependent Claim
43 words
A sole according to claim 1, in which the ribs run from one side of the sole to the other and are interrupted by gaps at locations displaced from the centre of the rib towards alternate sides of the sole for successive ribs.
Claim 6
Dependent Claim
24 words
A sole according to claim 1, in which the upper layer is composed of expanded synthetic rubber having a Shore hardness of about 40.
Claim 7
Dependent Claim
26 words
A sole according to claim 1, in which the upper layer is composed of natural rubber of low density having a Shore hardness of about 40.
Claim 8
Dependent Claim
43 words
A sole according to claim 1, in which the front and rear end of the lower layer comprise downward projections having a lower surface substantially flush with the lower surfaces of the ribs, the projections being rounded at the ends of the sole.
Claim 9
Dependent Claim
9 words
Footwear provided with a sole according to claim 1.
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) | 1981-12-25 | 1982-06-26 | 1982-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-12-25 | 1986-06-26 | 1986-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-12-25 | 1990-06-26 | 1990-12-26 | $7700.00 | Window Closed / Lapsed |