Patent US3253591A successfully refreshed from Google Patents.
US3253591A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foot cushions carried by the foot
Assignee: Individual
•
Filing: 1963-09-30
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Granted: 1966-05-31
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Expires: 1983-09-30
Abstract
No abstract record available.
Inventors
- 👤 William M Scholl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:42
CPC Classifications
A; A61; A61F; A61F5/00; A61F5/01; A61F5/019; A61F13/00; A61F13/06; A61F13/064; A61F13/067
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
110 words
A FOOT CUSHIONING DEVICE COMPRISING A PAIR OF SUPERPOSED LAYERS OF THERMOPLASTIC FOAM CUSHIONING MATERIAL HAVING AN INTEGRAL IMPERVIOUS SKIN ON EACH SIDE OF EACH LAYER AND FORMING A BODY PART OF THE DEVICE, AT LEAST ONE OF SAID LAYERS COMPRISING A THERMOPLASTIC FOAM CUSHIONING MATERIAL WHICH CONFORMS RESPONSIVE TO FOOT-APPLIED PRESSURE TO THE SURFACE CONTOUR OF A FOOT AND IS POSSESSED OF A LOW RECOVERY FACTOR OF LESS THAN 70% IN A TWO-HOUR INTERVAL AFTER REMOVAL OF PRESSURE, A HEAT SEAL SEAM JOINING SAID LAYERS ADJACENT THE PERIMETER OF SAID BODY PART, AND MEANS CONNECTED TO SAID LAYERS TO ATTACH THE DEVICE DIRECTLY TO THE FOOT OF A USER.
References Cited (Backward Citations)
US2878153A
Cited
US3025200A
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US3108852A
Cited
US3063448A
Cited
US3026233A
Cited
US3088860A
Cited
US3088461A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-30 | 1969-11-29 | 1970-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-30 | 1973-11-29 | 1974-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-30 | 1977-11-29 | 1978-05-31 | $7700.00 | Window Closed / Lapsed |