Latch assembly for a wheelchair
US5364165A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 26, 1992 |
| Grant date | Nov 15, 1994 |
| Priority date | — |
| Expiry date | Oct 26, 2012 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61G5/12
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A backrest latch assembly (20) is provided for a wheelchair (10) having a movable frame member (11) mounted to a stationary frame member (12) for articulation between a deployed position and a moved position. The latch assembly (20) includes a sliding bolt (22) having a first surface (30) and a base member (23) having a second surface (31). In a latched position, the first surface (30) is oriented in an angularly aligned orientation and cooperates with the second surface (31) to releasably latch the movable frame member (11) to the stationary frame member (12) in the deployed position. The bolt (22) can be axially displaced and rotated to a released position, at which the bolt (22) is retained in a stable condition with the first surface (30) out of engagement with the second surface (31) to allow manual release or disengagement of the bolt (22) without re-latching of the bolt. Thereafter, the movable frame member (11) is free to articulate from the deployed position to the moved position. A biasing mechanism (24) and bolt guiding assembly (44, 45) biases the bolt (22) for automatic movement back to the aligned orientation upon articulation of the movable frame member (11) from the…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.