Power work arm

Details Power work arm Power work arm

B - Operations, Transporting

25

J

B25J 3/02 (2006.01) B23K 37/04 (2006.01) B25J 18/00 (2006.01) F16H 21/44 (2006.01)

Patent

CA 2091300

A device with a pivoting work arm for carrying and positioning a tool which is moved by a modified Watts linkage powered by a linear actuator having a true straight line motion. The modified Watts linkage has relatively short links resulting in the center of the middle link following an arcuate path. The center of the middle link is drivingly connected to the linear actuator by a pivoting link or a cam. To provide shock absorption for the work arm as it reaches its fully extended position, the modified Watts linkage is coupled to a follower arm yieldably biased by a spring.

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