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Patent US3174800A successfully refreshed from Google Patents.
US3174800A
Expired / Lapsed
US
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Wheel chair arm lock
Assignee: Everest and Jennings Inc
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Filing: 1963-01-14
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Granted: 1965-03-23
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Expires: 1983-01-14
Abstract
No abstract record available.
Inventors
- 👤 Harry C Jennings
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:03
CPC Classifications
A; A61; A61G; A61G5/00; A61G5/10; A61G5/12; A61G5/125; A61G5/128; F; F16; F16B; F16B12/00; F16B12/40; Y; Y10; Y10T; Y10T403/00; Y10T403/60; Y10T403/602; Y10T403/604
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
IN A WHEEL CHAIR, A SIDE FRAME HAVING A FRONT PORTION, AN UPWARDLY OPEN SOCKET MEMBER ON SAID FRONT PORTION, AN ARM HAVING A DOWNWARDLY DISPOSED MEMBER REMOVABLY RECEIVABLE IN SAID SOCKET MEMBER, SAID SOCKET MEMBER AND THE DOWNWARDLY DISPOSED ARM MEMBER HAVING REGISTERABLE LOCKING PIN RECEIVING MEANS, A LOCKING PIN MOUNT CARRIED BY ONE OF SAID MEMBERS, A LOCKING PIN SHIFTABLY CARRIED BY SAID MOUNT FOR MOVEMENT INTO AND OUT OF REGISTRY WITH SAID LOCKING PIN RECEIVING MEANS, AND A SPRING ELEMENT CARRIED BY SAID MOUNT AND SHIFTABLE IN A DIRECTION PARALLEL TO THE LONGITUDINAL AXIS OF SAID MEMBERS, SAID LOCKING PIN BEING SECURED TO AND BIASED BY SAID SPRING ELEMENT TOWARD SAID MEMBERS IN A DIRECTION TRANSVERSELY OF THE MEMBERS TO YIELDABLY HOLD THE LOCKING PIN IN SAID LOCKING PIN RECEIVING MEANS.
Claim 2
Dependent Claim
134 words
IN A WHEEL CHAIR, A SIDE FRAME HAVING A FRONT PORTION, AN UPWARDLY OPEN SOCKET MEMBER ON SAID FRONT PORTION, AN ARM HAVING A DOWNWARDLY DISPOSED MEMBER REMOVABLY RECEIVABLE IN SAID SOCKET MEMBER, SAID SOCKET MEMBER AND THE DOWNWARDLY DISPOSED ARM MEMBER HAVING REGISTERABLE LOCKING PIN RECEIVING MEANS, A LOCKING PIN MOUNT CARRIED BY ONE OF SAID MEMBERS, A LOCKING PIN SHIFTABLY CARRIED BY SAID MOUNT FOR MOVEMENT INTO AND OUT OF REGISTRY WITH SAID LOCKING PIN RECEIVING MEANS, AND A SPRING ELEMENT CARRIED BY SAID MOUNT AND SHIFTABLE IN A DIRECTION PARALLEL TO THE LONGITUDINAL AXIS OF SAID MEMBERS, SAID LOCKING PIN BEING SECURED TO AND BIASED BY SAID SPRING ELEMENT TOWARD SAID MEMBERS IN A DIRECTION TRANSVERSELY OF THE MEMBERS TO YIELDABLY HOLD THE LOCKING PIN IN SAID LOCKING PIN RECEIVING MEANS.
References Cited (Backward Citations)
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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) | 1968-03-22 | 1968-09-21 | 1969-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-22 | 1972-09-21 | 1973-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-22 | 1976-09-21 | 1977-03-23 | $7700.00 | Window Closed / Lapsed |