Adjustable stand for an optical viewing apparatus

Details Adjustable stand for an optical viewing apparatus Adjustable stand for an optical viewing apparatus

1993-09-21

1996-02-20

Chotkowski, Karen J.

Supports

Brackets

Adjustable

403111, 403120, F16L 300

Patent

active

054922968

ABSTRACT:
The invention is directed to an adjustable stand for an optical viewing apparatus such as a surgical microscope pivotable about a pivot axis. The adjustable stand and the optical viewing apparatus conjointly define a center of gravity which can shift to produce an unwanted unbalancing torque when accessories are added to the microscope and/or when there is angular movement about the axis. The adjustable stand includes a mounting bracket for attaching the stand at a desired location; a pivot shaft defining the pivot axis; a carrier holding the pivot shaft and an elastically deformable energy storage device mounted on the shaft for releasing stored torque energy in response to the shift to balance the unwanted unbalancing torque. An adjusting device is provided for loading the storage means with a predetermined torque.

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patent: 5186422 (1993-02-01), Nakamura
patent: 5213293 (1993-05-01), Muentener et al.
patent: 5288043 (1994-02-01), Tigliev

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