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Adjustment mechanism for workstation

  • US 6,484,648 B1
  • Filed: 04/12/2001
  • Issued: 11/26/2002
  • Est. Priority Date: 04/12/2001
  • Status: Active Grant
First Claim
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1. An adjustment mechanism for vertically adjusting a work surface of a workstation, which comprises:

  • (a) a stationary first member defining a longitudinal axis of the mechanism;

    (b) a movable second member connected to the work surface of the workstation and being movable relative to the stationary first member in a substantially vertical direction along the longitudinal axis of the mechanism;

    (c) a support fixably mounted to the stationary first member and having a threaded opening extending substantially along the longitudinal axis of the mechanism;

    (d) a threaded member rotatably connected to the movable second member and extending through the threaded opening of the support wherein threads of the threaded member engage threads of the threaded opening;

    (e) a resilient means extending between the first member and the second member substantially along the longitudinal axis of the mechanism and tending to bias the members apart;

    (f) one driven sprocket fixably mounted on the threaded member adjacent to the work surface;

    (g) one drive sprocket directly connected to the driven sprocket and mounted on a shaft rotatably mounted on the work surface, the drive sprocket having a diameter greater than a diameter of the driven sprocket;

    (h) means for directly connecting the driven sprocket and the drive sprocket; and

    (i) means for rotating the shaft and the drive sprocket wherein when the drive sprocket rotates, the driven sprocket is rotated which rotates the threaded member in the threaded opening of the support such that the second member is moved relative to the first member.

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