Method & apparatus for providing low speed safety braking for a hoist system
US5671912A · kind A · utility
26Cited by
19References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 24, 1995 |
| Grant date | Sep 30, 1997 |
| Priority date | — |
| Expiry date | Oct 24, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66D1/54
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
At predetermined low speeds, a safety brake is applied directly to the hoisting drum at a setting sufficiently high to stop the load from falling should drive line failure occur. The load can be lowered or raised by applying sufficient torque to the drum to overcome the braking force and thus lower or raise the load. If drive train failure occurs, the brake will instantaneously stop the load without further uncontrolled movement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.