Patent US2812834A successfully refreshed from Google Patents.
Patent US3854774A successfully refreshed from Google Patents.
US3854774A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Swing-away footrest for invalid wheelchairs
Assignee: Gendron-Diemer Inc
•
Filing: 1973-08-06
•
Granted: 1974-12-17
•
Expires: 1993-08-06
Abstract
Abstract A swing-away footrest assembly for invalid wheelchairs having an improved latching mechanism for effectively locking the footrest in a position of use and facilitating unlocking the footrest to permit the same to be swung to a position of non-use or completely removed from the wheelchair.
Inventors
- 👤 P Limpach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:24
CPC Classifications
A; A61; A61G; A61G5/00; A61G5/10; A61G5/12; A61G5/125; A61G5/128
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
80 words
A latching mechanism for releasable locking a swinging footrest assembly to an adjacent part of a wheelchair upon which the footrest is pivotally supported to swing about a vertical axis comprising: a plunger affixed to said part normally biased to a latching position, said plunger mounted to reciprocate along an axis; a washer-like means affixed to said footrest for selective engagement with said plunger; and lever means pivotally mounted on said part for reciprocating said plunger out of latching position.
Claim 2
Dependent Claim
80 words
A latching mechanism for releasable locking a swinging footrest assembly to an adjacent part of a wheelchair upon which the footrest is pivotally supported to swing about a vertical axis comprising: a plunger affixed to said part normally biased to a latching position, said plunger mounted to reciprocate along an axis; a washer-like means affixed to said footrest for selective engagement with said plunger; and lever means pivotally mounted on said part for reciprocating said plunger out of latching position.
Claim 3
Dependent Claim
14 words
The invention defined in claim 1 includes a helical spring for biassing and plunger.
Claim 4
Dependent Claim
20 words
The invention defined in claim 1 wherein said lever includes an elongate slot for receiving one end of said plunger.
Claim 5
Dependent Claim
17 words
The invention defined in claim 3 wherein the opposite end of said plunger is hemispherical in shape.
Claim 6
Dependent Claim
21 words
The invention defined in claim 1 wherein said plunger is mounted to reciprocate along an axis normal to said vertical axis.
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) | 1977-12-16 | 1978-06-17 | 1978-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-16 | 1982-06-17 | 1982-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-16 | 1986-06-17 | 1986-12-17 | $7700.00 | Window Closed / Lapsed |