Counterbalanced table mechanism
US5797331A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 28, 1997 |
| Grant date | Aug 25, 1998 |
| Priority date | — |
| Expiry date | Mar 28, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47B9/02
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A mechanism for use in controlling vertical movement of a surface, such as a table top, supported for movement between upper and lower vertical positions, including a counterbalance mechanism for counterbalancing at least part of the weight of the surface and/or a weight placed thereon, and a brake mechanism for releasably retaining the surface in a selected vertical position. The counterbalance mechanism includes a member having a first end supported for pivotal movement about a first axis and a spring tending to opposed pivotal movement of the member in a direction corresponding to lowering movement of the surface; and the brake mechanism includes a brake rod having one end supported for pivotal movement about a second axis disposed parallel to the first axis and a brake rod clamping mechanism supported by the member for pivotal movement about a third axis disposed parallel to the first axis and supported by the brake rod for movement lengthwise thereof with the clamping mechanism normally clamping against the brake rod to prevent pivot movement of the member in the direction corresponding to lowering movement of the surface, and an operator for manually releasing the clamping me…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.