Patent attributes
An adjustable arm assembly for a chair is described including an adjustable arm having a detent actuator to be manually depressed so that elevation of the chair arm can be selectively adjusted relative to the chair seat to accommodate the arms of a user. An elevation adjustment tube to which the adjustable arm is connected is slidable through a hollow elevation guide tube at the side of the chair so that the elevation of the adjustable arm can be changed. A lock is carried by and slidable with the elevation adjustment tube through the elevation guide tube. The lock has a detent pin that is moved into receipt by one of a plurality of detent holes formed in the elevation guide tube when the detent actuator is not being operated so as to releasably retain the elevation adjustment tube within the elevation guide tube. An elongated actuator arm runs through the elevation adjustment tube between the detent actuator and the lock. A pressing force manually applied to the detent actuator causes the actuator arm to move longitudinally through the elevation adjustment tube towards the lock. Accordingly, the detent pin of the lock is pulled out of its receipt by the detent hole formed in the elevation guide tube, whereby to permit the elevation adjustment tube to slide through the elevation guide tube so that the elevation of the adjustable arm can be changed.
