Counterbalance mechanism
US5181620A · kind A · utility
12Cited by
15References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 4, 1991 |
| Grant date | Jan 26, 1993 |
| Priority date | — |
| Expiry date | Jun 4, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65G1/07
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A mechanism for use in counterbalancing a shelf or the like incident to vertical movement thereof along a trackway featuring a linkage assembly and coupling assemblies for effecting a relatively large displacement of the shelf incident to a relatively small displacement of a shelf counterbalance spring. The shelf is mounted on the trackway by followers carrying a manual brake releasably engageable with the trackway.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.