Patent US3179431A successfully refreshed from Google Patents.
US3179431A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Obstacle-climbing wheel chairs
Assignee: Individual
•
Filing: 1963-01-29
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Granted: 1965-04-20
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Expires: 1983-01-29
Abstract
No abstract record available.
Inventors
- 👤 Otto G Pikl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:06
CPC Classifications
A; A61; A61G; A61G5/00; A61G5/06; A61G5/061; Y; Y10; Y10S; Y10S280/00; Y10S280/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
IN AN OBSTRUCTION-CLIMBING VEHICLE, A COMBINATION INCLUDING: A SEAT FOR PASSENGER; AND MEANS FOR SUPPORTING SAID SEAT, SAID MEANS INCLUDING AT LEAST ONE PAIR OF RELATIVELY LARGE WHEELS ROTATABLE OF SUBSTANTIALLY ALIGNED AXES AND AT LEAST ONE ADDITIONAL WHEEL ROTATABLE ON AN AXIS DISPLACED FROM SAID ALIGNED AXES, EACH OF SAID RELATIVELY LARGE WHEELS COMPRISING A PLURALITY OF NON-TRANSLATIONALLY MOVABLE SPOKES RIGIDLY CONNECTED TO A COMMON HUB, A PLURALITY OF TRANSLATIONALLY MOVABLE SPOKES EACH INTERPOSED BETWEEN TWO OF SAID NON-TRANSLATIONALLY MOVABLE SPOKES AND EACH SLIDABLY CARRIED BY SAID HUB, A PLURALITY OF RIM SEGMENTS EACH HAVING A HOLE AT EACH END, AT LEAST ONE OF SAID HOLES BEING ELONGATED, EACH OF SAID SEGMENTS HINGED TO ONE OF SAID TRANSLATIONALLY MOVABLE
Claim 2
Dependent Claim
120 words
IN AN OBSTRUCTION-CLIMBING VEHICLE, A COMBINATION INCLUDING: A SEAT FOR PASSENGER; AND MEANS FOR SUPPORTING SAID SEAT, SAID MEANS INCLUDING AT LEAST ONE PAIR OF RELATIVELY LARGE WHEELS ROTATABLE OF SUBSTANTIALLY ALIGNED AXES AND AT LEAST ONE ADDITIONAL WHEEL ROTATABLE ON AN AXIS DISPLACED FROM SAID ALIGNED AXES, EACH OF SAID RELATIVELY LARGE WHEELS COMPRISING A PLURALITY OF NON-TRANSLATIONALLY MOVABLE SPOKES RIGIDLY CONNECTED TO A COMMON HUB, A PLURALITY OF TRANSLATIONALLY MOVABLE SPOKES EACH INTERPOSED BETWEEN TWO OF SAID NON-TRANSLATIONALLY MOVABLE SPOKES AND EACH SLIDABLY CARRIED BY SAID HUB, A PLURALITY OF RIM SEGMENTS EACH HAVING A HOLE AT EACH END, AT LEAST ONE OF SAID HOLES BEING ELONGATED, EACH OF SAID SEGMENTS HINGED TO ONE OF SAID TRANSLATIONALLY MOVABLE
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-19 | 1968-10-19 | 1969-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-19 | 1972-10-19 | 1973-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-19 | 1976-10-19 | 1977-04-20 | $7700.00 | Window Closed / Lapsed |