Adjustment mechanism for workstation
First Claim
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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Accused Products
Abstract
The adjustment mechanism (10) includes a stationary first member (12) and a second member (20) telescopingly mounted in the first member. A threaded member (26) is rotatably connected at the first end (26A) to the upper end (20A) of the second member. The second end (26B) of the screw extends down through a top nut (38) fixably mounted on one end of a nut support (36). A spring (40) is mounted around the screw and the nut support extends between the lower end of the first member and the upper end of the second member. An operating mechanism is used to rotate the screw. The operating mechanism allows for fewer rotations of the handle (62) of the operating mechanism to move the work surface the desired amount.
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Citations
31 Claims
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1. An adjustment mechanism for vertically adjusting a work surface of a workstation, which comprises:
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(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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A system for adjusting a height of a work surface of a workstation, which comprises:
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(a) a primary adjustment mechanism including;
i. a stationary first member defining a longitudinal axis of the mechanism;
ii. 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;
iii. a support fixably mounted to the stationary first member and having a threaded opening extending substantially along the longitudinal axis of the mechanism;
iv. 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;
v. 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;
vi. one driven sprocket fixably mounted on the threaded member adjacent to the work surface; and
vii. an alignment sprocket mounted on the threaded member adjacent the work surface;
(b) at least one secondary adjustment mechanism including;
i. a stationary first member defining a longitudinal axis of the mechanism;
ii. 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;
iii. a support fixably mounted to the stationary first member and having a threaded opening extending substantially along the longitudinal axis of the mechanism;
iv. 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;
v. 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; and
vi. an alignment sprocket mounted on the threaded member adjacent the work surface;
(c) one drive sprocket directly connected to the one driven sprocket of the primary adjustment mechanism 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 of the primary adjustment mechanism;
(d) means for directly connecting the driven sprocket of the primary adjustment mechanism and the drive sprocket; and
(e) means for rotating the shaft and the drive sprocket wherein as the drive sprocket rotates, the driven sprocket is rotated which rotates the threaded shaft of the primary adjustment mechanism and the alignment sprocket of the primary adjustment mechanism; and
(f) means for connecting the alignment sprocket of the primary adjustment mechanism to the alignment sprocket of the secondary adjustment mechanism so that when the threaded shaft and the alignment sprocket of the primary adjustment mechanism rotate, the alignment sprocket and threaded member of the secondary adjustment mechanism rotate so that the primary adjustment mechanism and the secondary adjustment mechanism move at substantially the same rate. - View Dependent Claims (23, 24, 25, 26, 27)
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28. A method for adjusting a height of a work surface of a workstation which comprises the steps of:
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(a) providing an adjustment mechanism for the work surface of the workstation, the adjustment mechanism including a stationary first member defining a longitudinal axis of the mechanism;
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 adjustment mechanism;
a support fixably mounted to the stationary first member and having a threaded opening extending substantially along the longitudinal axis of the adjustment mechanism;
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;
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;
one driven sprocket fixably mounted on the threaded member adjacent to the work surface;
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;
means for directly connecting the driven sprocket and the drive sprocket and means for rotating the shaft and the drive sprocket; and
(b) activating the means for rotating the shaft and drive sprocket such that the shaft and drive sprocket rotate which rotates the threaded member in the threaded opening of the support which moves the second member relative to the first member to vertically adjust the work surface. - View Dependent Claims (29, 30, 31)
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Specification