Invalid hoist
US5845348A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 18, 1997 |
| Grant date | Dec 8, 1998 |
| Priority date | — |
| Expiry date | Mar 18, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61G7/1076
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An invalid hoist comprises a telescopic mast (11) having a lower part (18) and an upper part (19), power operated device for raising and lowering the upper part relative to the lower part, a lifting arm (12) pivotably connected to the upper part of the mast, the lifting arm having a sling hanger (23) or at least one sling attachment point at or adjacent to one end thereof, and a manually extendable/retractable stay (30) between the lifting arm and the lower mast part. The lifting arm is pivotally connected to the upper part of the mast at a position intermediate its ends and the extendable/retractable stay is connected to the lifting arm on the side of the pivotable connection between the lifting arm and the upper apart of the mast remote from the one end of the lifting arm. The stay can be extended, if the power operated device fails with the upper part of the mast in a raised position, to lower a user to a position in which he/she can be released from a sling supported by the lifting arm. It can also be extended, when the upper mast part is in its lowermost position, to move the lifting arm to a storage position alongside the telescopic mast.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.