US3300835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resilient wheels
Assignee: Post Office
•
Filing: 1964-08-18
•
Granted: 1967-01-31
•
Expires: 1984-08-18
Abstract
No abstract record available.
Inventors
- 👤 Barr David John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:34
CPC Classifications
B; B65; B65G; B65G39/00; B65G39/02; B07; B07C; B07C3/00; B07C3/02; B07C3/08; F; F16; F16C; F16C13/00; F16H; F16H55/00; F16H55/02; F16H55/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
A WHEEL COMPRISING IN COMBINATION A PERIPHERAL PORTION, A HUB PORTION, AND, INTERCONNECTING THE PERIPHERAL PORTION AND THE HUB PORTION, A WEB OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF NATURAL RUBBER, SYNTHETIC RUBBER AND PLASTIC MATERIALS AND CONSISTING OF MULTIPLE HOLLOW FRUSTO-CONICAL SECTIONS HAVING ACUTE APEX ANGLES, ALTERNATE SECTIONS BEING INVERTED.
Claim 2
Dependent Claim
53 words
A WHEEL COMPRISING IN COMBINATION A PERIPHERAL PORTION, A HUB PORTION, AND, INTERCONNECTING THE PERIPHERAL PORTION AND THE HUB PORTION, A WEB OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF NATURAL RUBBER, SYNTHETIC RUBBER AND PLASTIC MATERIALS AND CONSISTING OF MULTIPLE HOLLOW FRUSTO-CONICAL SECTIONS HAVING ACUTE APEX ANGLES, ALTERNATE SECTIONS BEING INVERTED.
References Cited (Backward Citations)
US2073347A
Cited
US2207290A
Cited
FR1007671A
Cited
US2686549A
Cited
US2866222A
Cited
US2878074A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |