Spring and lock support for overbed table
US5016846A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 6, 1989 |
| Grant date | May 21, 1991 |
| Priority date | — |
| Expiry date | Jan 6, 2009 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47B9/00
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A bedside table has a base with a vertical tube thereon, a tabletop with a vertical member slidably disposed in the tube, and a locking mechanism which can releasably lock the tube and vertical member against relative movement. The locking mechanism includes a vertical locking surface within the tube, a first positioning surface on the vertical support which faces the locking surface, second and third vertically spaced positioning surfaces facing each other at a location between the first positioning surface and the locking surface, and a plate-like locking member having a first edge portion disposed against the first positioning surface and extending away from the first positioning surface between the second and third positioning surfaces in a direction toward the locking surface, the locking member being pivotal about a horizontal axis in the region of the first positioning surface between locking and release positions in which a second edge portion thereof respectively engages and is spaced from the locking surface. A single spring can be used to both counter-balance the weight of the tabletop and vertical member and yieldably urge the locking member toward its locking position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.