US3346062A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power-operated wheelchair
Assignee: Individual
•
Filing: 1966-02-04
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Granted: 1967-10-10
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Expires: 1986-02-04
Abstract
No abstract record available.
Inventors
- 👤 Eugene M Richison
- 👤 Ethel M Richison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:18
CPC Classifications
A; A61; A61G; A61G5/00; A61G5/06; A61G5/061; A61G5/066; B; B62; B62D; B62D55/00; B62D55/06; B62D55/075; A61G5/04; A61G5/041; A61G5/042; A61G5/10; A61G5/1056; A61G5/1075
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
157 words
A POWER-DRIVEN CONVEYANCE COMPRISING A PAIR OF UNITS EACH HAVING A CHASSIS INCLUDING JUXTAPOSED AND REMOTELY-DISPOSED ENDS, ENDLESS TRACTION BELT MEANS AT A PAIR OF OPPOSED SIDES OF SAID CHASSIS SUPPORTING EACH SAID CHASSIS IN ELEVATED POSITION RELATIVE TO A HORIZONTAL PLANE, MEANS PIVOTALLY-CONNECTING SAID JUXTAPOSED CHASSIS ENDS, RELEASABLE LOCK MEANS HOLDING SAID UNITS AGAINST PIVOTAL MOVEMENT RELATIVE TO ONE ANOTHER, GROUND-ENGAGING WHEEL MEANS AT ONE END OF EACH OF SAID UNITS NORMALLY SUPPORTING, RESPECTIVELY, EACH OF SAID UNITS AND THEIR RESPECTIVE TRACTION BELTS ABOVE SAID GROUND, MEANS PIVOTALLY-CONNECTING SAID GROUND-ENGAGING WHEEL MEANS WITH THEIR RESPECTIVE UNITS FOR RETRACTION AND EXPANSION TOWARD AND AWAY FROM THEIR RESPECTIVE UNIT, SELECTIVELYOPERABLE MEANS TO EFFECT SAID RETRACTION AND EXTENSION OF SAID GROUND-ENGAGING WHEELS WHEREBY SAID ENDLESS TRACTION BELTS MAY BE MOVED INTO GROUND-ENGAGING RELATION WITH THE GROUND-ENGAGING WHEELS RETRACTED THEREABOVE AND VICE VERSA, AND SELECTIVELY-OPERABLE POWER MEANS CONNECTED IN DRIVING RELATION WITH SAID ENDLESS TRACTION BELTS AND SAID GROUND-ENGAGING WHEELS.
Claim 2
Dependent Claim
157 words
A POWER-DRIVEN CONVEYANCE COMPRISING A PAIR OF UNITS EACH HAVING A CHASSIS INCLUDING JUXTAPOSED AND REMOTELY-DISPOSED ENDS, ENDLESS TRACTION BELT MEANS AT A PAIR OF OPPOSED SIDES OF SAID CHASSIS SUPPORTING EACH SAID CHASSIS IN ELEVATED POSITION RELATIVE TO A HORIZONTAL PLANE, MEANS PIVOTALLY-CONNECTING SAID JUXTAPOSED CHASSIS ENDS, RELEASABLE LOCK MEANS HOLDING SAID UNITS AGAINST PIVOTAL MOVEMENT RELATIVE TO ONE ANOTHER, GROUND-ENGAGING WHEEL MEANS AT ONE END OF EACH OF SAID UNITS NORMALLY SUPPORTING, RESPECTIVELY, EACH OF SAID UNITS AND THEIR RESPECTIVE TRACTION BELTS ABOVE SAID GROUND, MEANS PIVOTALLY-CONNECTING SAID GROUND-ENGAGING WHEEL MEANS WITH THEIR RESPECTIVE UNITS FOR RETRACTION AND EXPANSION TOWARD AND AWAY FROM THEIR RESPECTIVE UNIT, SELECTIVELYOPERABLE MEANS TO EFFECT SAID RETRACTION AND EXTENSION OF SAID GROUND-ENGAGING WHEELS WHEREBY SAID ENDLESS TRACTION BELTS MAY BE MOVED INTO GROUND-ENGAGING RELATION WITH THE GROUND-ENGAGING WHEELS RETRACTED THEREABOVE AND VICE VERSA, AND SELECTIVELY-OPERABLE POWER MEANS CONNECTED IN DRIVING RELATION WITH SAID ENDLESS TRACTION BELTS AND SAID GROUND-ENGAGING WHEELS.
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) | 1970-10-09 | 1971-04-10 | 1971-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-09 | 1975-04-10 | 1975-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-09 | 1979-04-10 | 1979-10-10 | $7700.00 | Window Closed / Lapsed |