Adjustable, locking armrest for chair

Abstract

An armrest that is infinitely adjustable is provided by the combination of a pin and slot arrangement for adjusting the arm in one direction and a second pin and slot arrangement for angularly adjusting the arm in a different direction, the second pin being in the form of a locking cam which locks the arm to a portion of the chair.

1 . An armrest for a chair, comprising:
 a. an arm having a longitudinal arm slot therein;   b. a bracket with a generally planar face connected to the chair;   c. a swivel pin extending out from the bracket and through longitudinal arm slot to attach the arm to the bracket;   d. an opening in the bracket offset from the location of the swivel pin;   e. a friction disk disposed between the arm and the bracket at the opening, and having a bore; and   f. locking means extending through the bore, the opening, and the longitudinal arm slot for compressing the arm, bracket, and friction disk together to lock the arm in place.   
   
   
       2 . The armrest of  claim 1 , further comprising an arm pad. 
   
   
       3 . The armrest of  claim 1 , wherein the locking mechanism is a levered cam. 
   
   
       4 . The armrest of  claim 1 , wherein the friction disk has a continuous flange on at least one face. 
   
   
       5 . The armrest of  claim 1 , wherein the friction disk has a discontinuous flange on at least one face. 
   
   
       6 . The armrest of  claim 2 , further comprising means for laterally adjusting the position of the pad. 
   
   
       7 . The armrest of  claim 1 , wherein said locking means extending through the bore comprises a rod, one end of the rod being fixed, the other end of the rod having a locking mechanism for compressing the arm, friction disk, and bracket together. 
   
   
       8 . The arm rest of  claim 7 , wherein the locking mechanism is a cam. 
   
   
       9 . The armrest of  claim 8 , wherein the cam is a portion of a lever pivotally attached to the rod. 
   
   
       10 . The armrest of  claim 1 , wherein the opening in the bracket forms an arc having the swivel pin as the center and the longitudinal slot as a radius.