The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 04, 1997
Filed:
Dec. 02, 1994
Kurt A Jonker, Grand Rapids, MI (US);
Knoll, Inc., East Greenville, PA (US);
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.