Patent US3241848A successfully refreshed from Google Patents.
US3241848A
Expired / Lapsed
US
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Stair-climbing vehicle
Assignee: Individual
•
Filing: 1963-12-27
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Granted: 1966-03-22
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Expires: 1983-12-27
Abstract
No abstract record available.
Inventors
- 👤 John F Flory
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:39
CPC Classifications
A; A61; A61G; A61G5/00; A61G5/06; A61G5/061; A61G5/063; A61G5/065; Y; Y10; Y10S; Y10S280/00; Y10S280/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
A STAIR-CLIMBING VEHICLE COMPRISING IN COMBINATION WITH A FRAME: A MULTIPLE-ARMED WHEEL-SUPPORTING SPIDER ROTATABLY MOUNTED ON THE FRAME; ADDITIONAL MEANS ATTACHED TO THE FRAME FOR SUPPORT OF SAID VEHICLE; MEANS FOR DRIVING SAID SPIDER IN ROTATION; AND MEANS PREVENTING ROLLING OF THE WHEELS OF SAID SPIDER ON A WHEEL-SUPPORTING SURFACE DURING ROTATION OF SAID SPIDER.
Claim 2
Dependent Claim
55 words
A STAIR-CLIMBING VEHICLE COMPRISING IN COMBINATION WITH A FRAME: A MULTIPLE-ARMED WHEEL-SUPPORTING SPIDER ROTATABLY MOUNTED ON THE FRAME; ADDITIONAL MEANS ATTACHED TO THE FRAME FOR SUPPORT OF SAID VEHICLE; MEANS FOR DRIVING SAID SPIDER IN ROTATION; AND MEANS PREVENTING ROLLING OF THE WHEELS OF SAID SPIDER ON A WHEEL-SUPPORTING SURFACE DURING ROTATION OF SAID SPIDER.
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) | 1969-03-21 | 1969-09-20 | 1970-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-21 | 1973-09-20 | 1974-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-21 | 1977-09-20 | 1978-03-22 | $7700.00 | Window Closed / Lapsed |