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Height adjustment chair control

  • US 6,692,077 B1
  • Filed: 03/27/2003
  • Issued: 02/17/2004
  • Est. Priority Date: 03/27/2003
  • Status: Active Grant
First Claim
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1. A height adjustment mechanism for a chair comprising:

  • a second class lever pivotally attached to a main frame, said lever overlying an opening for reception of a valve opening member of a height adjusting cylinder;

    a control arm supported by said main frame; and

    a cam mounted on said control arm, said cam positioned to depress said lever, responsive to rotation of said control arm, such that said lever depresses said valve opening member when said valve opening member is received by said opening.

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