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US 9,877,792 B2Granted
Compact counter balanced arms
AssigneeIntuitive Surgical Operations, Inc.
InventorThomas G. Cooper
Life of this patent
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Abstract
In one embodiment of the invention, a counter balanced arm is disclosed including, a first link having a first rotating transmission device, a second link having a first rotating transmission device and a compression spring, a third rotating transmission device coupled between the first and second links, and a cable routed over the rotating transmission devices coupled between the second link and the compression spring. The compression spring forms a tension in the cable to counter balance a load applied to an end of the second link of the counter balanced arm.
Claims8
A counter-balanced arm comprising:
- a first link having a first rotating transmission device rotatably coupled thereto, the first link to couple to a support mechanism at a first end;
- a second link having a second rotating transmission device rotatably coupled thereto and a compression spring having a first end coupled thereto, the second link pivotally coupled to the first link at a first pivot point;
- a third rotating transmission device coupled between the second link and the first link at the first pivot point;
- and
- a cable coupled to the second link, routed over the third rotating transmission device, the first rotating transmission device, and the second rotating transmission device, routed through the compression spring, and coupled to a second end of the compression spring to form a tension in the cable to counter balance a load applied to an end of the second link.
2 more elements
Dependencies are inferred from the claim text.