Load sensing safety device for vertical lift
US7437782B1 · kind B1 · utility
17Cited by
29References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 6, 2006 |
| Grant date | Oct 21, 2008 |
| Priority date | — |
| Expiry date | Jan 27, 2027 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66D1/06
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A load sensing safety device comprises a pulley shaft carrying a pulley. The pulley, in turn, carries a belt that effectuates movement of the patient lift boom. A biasing element applies a spring force against the pulley shaft to move the pulley shaft in a first direction. A switch that opens and closes responsive to movement of the pulley shaft, whereby the switch opens where the pulley shaft is moved to a first position by movement of the spring in the first direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.