Patent ID: 8321976
Filing Date: 2012-12-04
Classification: A61G

Abstract:
1. A height adjustable apparatus comprising: a deck; a drag link; a first lever, said first lever comprising: a second lever, said second lever comprising: an actuator having an actuator first end and an actuator second end, wherein one of said actuator first end and said actuator second end is pivotally connected to said drag link, and the other of said actuator first end and said actuator second end is pivotally connected to said first lever third arm at said first lever third arm interface; and a control arm, said control arm having a control arm first end and a control arm second end, one of said control arm first end and said control arm second end being pivotally connected to said drag link, and the other of said control arm first end and said control arm second end controlling the location of said one of said actuator first end and said actuator second end relative said first lever third arm interface.