Robot arm having motion-limiting tether

Details Robot arm having motion-limiting tether Robot arm having motion-limiting tether

1987-09-03

1989-01-03

Dobeck, Benjamin

Electricity: motive power systems

Positional servo systems

Program- or pattern-controlled systems

200334, 901 49, 318563, G08B 1942

Patent

active

047959576

ABSTRACT:
An electrical power interrupting tether system for a multiple-joint, anthropomorphic robot arm that substantially improves robot arm operational safety. The tether system includes a robot arm and auxiliary equipment power-interrupting electrical robot arm member by a set of braided steel wires. A pair of conventional robot arm and auxiliary equipment power-interrupting limit switches actuated by excessive rotational robot arm movement are also provided. Movement of the robot arm beyond a predetermined safety zone defined by each arm-member-tethering wire and the limit switch pair will cause electrical power interruption to both the robot arm and to auxiliary equipment associated therewith to thereby preclude potentially unsafe movement of the robot arm beyond the above-defined safety zone.

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patent: 4586868 (1986-05-01), Nakashima et al.
patent: 4588347 (1986-05-01), Murta
patent: 4636604 (1987-01-01), Gomes
patent: 4636699 (1987-01-01), Kato
patent: 4697929 (1987-10-01), Nakashima et al.

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