Patent Number: 6,168,237

Title: Adjustable armrest for chairs

Abstract: An armrest construction for chairs includes an armrest support having a lower end constructed for attachment to a chair, an upper end, and a mounting block attached to the upper end. A pivot block is pivoted to the mounting block at a main pivot, the pivot block having an upwardly-extending follower. First and second gears are each pivoted to the pivot block, the gears having intermeshing teeth at an inner end such that rotation of the first gear causes the second gear to simultaneously rotate in an opposite direction, the first and second gears further having outer ends. A support plate having pivot/slide members engages the outer ends of the first and second gears, and further has a guide operably engaging the follower to guide lateral movement of the support plate along a predetermined path. The support plate is rotatable about the main pivot to adjust the angular orientation of the armrest construction and is laterally movable along continuously parallel positions to adjust a width of the armrest construction relative to the chair. The armrest construction is mounted on a vertically-adjustable armrest support member for optimal adjustability.

Inventors: Lamart; Michel A. (Kentwood, MI), Dammermann; Arnold B. (Grand Rapids, MI), Knoblock; Glenn A. (Kentwood, MI), Grooters; Robert S. (Grand Rapids, MI), DeKraker; Larry (Holland, MI), Hasbany; John Hanna J. (Grand Rapids, MI)

Assignee: Steelcase Development Inc.

International Classification: A47C 1/03 (20060101); A47C 1/022 (20060101); A47C 007/54 (); B60N 002/46 ()

Expiration Date: 01/02/2018