Unitized portable hoist
US4850570A · kind A · utility
4Cited by
7References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 3, 1988 |
| Grant date | Jul 25, 1989 |
| Priority date | — |
| Expiry date | Mar 3, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66D1/08
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A unitized portable hoist having a base structure. A support structure is attached to the base structure. A hoist drum is rotatable attached to hydraulic motors which are in turn attached to the base structure. A crown block is attached to the base structure below the hoist drum. An electric motor drives a hydraulic pump, both of which are attached to the base structure. The hydraulic pump drives the hydraulic motors. A cable is taken up and let out by the hoist drum. A fall block rides on the cable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.