Patent US2675405A successfully refreshed from Google Patents.
Patent US3835556A successfully refreshed from Google Patents.
US3835556A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Base for footwear contributing to comfortable and graceful walking
Assignee: Individual
•
Filing: 1973-03-16
•
Granted: 1974-09-17
•
Expires: 1993-03-16
Abstract
Abstract A base for articles of footwear and articles of footwear comprising such a base. Such base comprises a rigid platform of which the ground-contacting surface extends in a continuous convex curve from the front (toe) end to the rear (heel) end. Said convex curve includes a middle portion for location beneath the foot-arch of the wearer which has a radius of curvature greater than the portions of said convex curve lying either side of said middle portion.
Inventors
- 👤 A Panaretos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:26
CPC Classifications
A; A43; A43B; A43B13/00; A43B13/14; A43B13/143; A43B13/145
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
167 words
An article of footwear, comprising a rigid base (1) having a lower ground-contacting surface (2) having a configuration which follows a smooth convex curve, said ground-contacting surface having a middle portion (2a) that is arranged, during use, beneath the arch of the foot of a wearer, and front and rear end portions (2b, 2c) arranged on opposite sides of said middle portion for arrangement in supporting relation below the toes and heel, respectively, of the wearer, said middle portion having a radius of curvature which is greater than said front and rear end portions, and further portions (2d, 2e) on opposite sides of said front and rear end portions from said middle portion, respectively, each of said further portions having a radius of curvature that is less than that of the adjacent front and rear end portions, respectively; and upper means (3) connected with said base for Receiving the foot of the wearer in such a manner as to position the wearer''s arch above said middle portion.
Claim 2
Dependent Claim
167 words
An article of footwear, comprising a rigid base (1) having a lower ground-contacting surface (2) having a configuration which follows a smooth convex curve, said ground-contacting surface having a middle portion (2a) that is arranged, during use, beneath the arch of the foot of a wearer, and front and rear end portions (2b, 2c) arranged on opposite sides of said middle portion for arrangement in supporting relation below the toes and heel, respectively, of the wearer, said middle portion having a radius of curvature which is greater than said front and rear end portions, and further portions (2d, 2e) on opposite sides of said front and rear end portions from said middle portion, respectively, each of said further portions having a radius of curvature that is less than that of the adjacent front and rear end portions, respectively; and upper means (3) connected with said base for Receiving the foot of the wearer in such a manner as to position the wearer''s arch above said middle portion.
Claim 3
Dependent Claim
137 words
A base for an article of footwear, comprising a rigid base (1) having a lower ground-contacting surface (2) having a configuration which follows a smooth convex curve, said ground-contacting surface having a middle portion (2a) that is arranged, during use, beneath the arch of the foot of a wearer, and front and rear end portions (2b, 2c) arranged on opposite sides of said middle portion for arrangement in supporting relation below the toes and heel, respectively, of the wearer, said middle portion having a radius of curvature which is greater than said front and rear end portions, and further portions (2d, 2e) on opposite sides of said front and rear end portions, respectively, each of said further portions having a radius of curvature that is less than that of the adjacent front and rear end portions, respectively.
Claim 4
Dependent Claim
137 words
A base for an article of footwear, comprising a rigid base (1) having a lower ground-contacting surface (2) having a configuration which follows a smooth convex curve, said ground-contacting surface having a middle portion (2a) that is arranged, during use, beneath the arch of the foot of a wearer, and front and rear end portions (2b, 2c) arranged on opposite sides of said middle portion for arrangement in supporting relation below the toes and heel, respectively, of the wearer, said middle portion having a radius of curvature which is greater than said front and rear end portions, and further portions (2d, 2e) on opposite sides of said front and rear end portions, respectively, each of said further portions having a radius of curvature that is less than that of the adjacent front and rear end portions, respectively.
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) | 1977-09-16 | 1978-03-18 | 1978-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-16 | 1982-03-18 | 1982-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-16 | 1986-03-18 | 1986-09-17 | $7700.00 | Window Closed / Lapsed |