Vertically adjustable table
US5598788A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 2, 1994 |
| Grant date | Feb 4, 1997 |
| Priority date | — |
| Expiry date | Dec 2, 2014 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47B2200/0027
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A vertically adjustable desk, table or workstation has a work surface carried between a pair of leg assemblies. The leg assemblies have telescoping sleeves and a ratcheting latch mechanism operatively interconnecting the sleeves. The ratcheting latch mechanism has a toggle preferably in the inner sleeve and a ratchet opening, preferably in the outer sleeve. The opening is defined in part by an edge formed with a series of lateral inclined ratchet slots at which a latch pin on the toggle can set the vertical height. The toggle is spring biased to either of two over-center alignments. Upper and lower edges of the opening respectively toggle the latch mechanism to move the pin out of engagement with the slots at the top limit of travel, and back into engagement with the slots at the bottom limit of travel. The latch pin follows the ratchet slots in progression as the table is raised, and is switched by the top and bottom edge portions to disengage or engage the slots. Gas springs optionally may be included to produce an upward balancing force for supporting the work surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.