US3169596A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Step traversing vehicles
Assignee: Individual
•
Filing: 1962-12-19
•
Granted: 1965-02-16
•
Expires: 1982-12-19
Abstract
No abstract record available.
Inventors
- 👤 Stephen A Wright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:29
CPC Classifications
A; A61; A61G; A61G5/00; A61G5/06; A61G5/061; A61G5/066; B; B62; B62B; B62B5/00; B62B5/02; B62B2301/00; B62B2301/25; B62B2301/258; Y; Y10; Y10S; Y10S180/00; Y10S180/907; Y10S280/00; Y10S280/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
IN A STEP TRANSVERSING WHEEL CHAIR, THE COMBINATION OF A CHASSIS, WHEELS PROVIDED ON SAID CHASSIS FOR TRAVELING OVER EVEN SUFRACES, A ROTATABLE SCREW DISPOSED IN A REARWARDLY INCLINED POSITION AND CONNECTED TO SAID CHASSIS FOR PROPELLING THE SAME OVER STEPS, MEANS FOR ROTATING SAID SCREW, AND MEANS FOR RAISING AND LOWERING SAID WHEELS RELATIVE TO SAID SCREW.
Claim 2
Dependent Claim
58 words
IN A STEP TRANSVERSING WHEEL CHAIR, THE COMBINATION OF A CHASSIS, WHEELS PROVIDED ON SAID CHASSIS FOR TRAVELING OVER EVEN SUFRACES, A ROTATABLE SCREW DISPOSED IN A REARWARDLY INCLINED POSITION AND CONNECTED TO SAID CHASSIS FOR PROPELLING THE SAME OVER STEPS, MEANS FOR ROTATING SAID SCREW, AND MEANS FOR RAISING AND LOWERING SAID WHEELS RELATIVE TO SAID SCREW.
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) | 1968-02-16 | 1968-08-17 | 1969-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-16 | 1972-08-17 | 1973-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-16 | 1976-08-17 | 1977-02-16 | $7700.00 | Window Closed / Lapsed |