Robot hand

Details Robot hand Robot hand

1983-12-06

1985-12-10

Moy, Magdalen Y. C.

Material or article handling

Vertically swinging load support

Grab

901 37, 901 49, B25J 1502

Patent

active

045576602

ABSTRACT:
A robot hand provided with fingers driven by a double acting cylinder and supplied working liquid pressure through two, 2-position, 5-port-type, single solenoid, electromagnetic valves, wherein: (a) an outlet of a first electromagnetic valve is connected with the inlet thereof in response to the ON position of the solenoid thereof and is connected with the inlet of a first chamber of the double acting cylinder; (b) an outlet of a second electromagnetic valve is connected with the inlet thereof in response to the OFF position of a second chamber of the double acting cylinder; (c) an outlet of the first electromagnetic valve is connected with the inlet thereof in response to the OFF position of the solenoid thereof and is plugged; (d) an outlet of the second electromagnetic valve is connected with the inlet thereof in response to the ON position of the solenoid thereof and is plugged; and (e) a working liquid pressure source is connected with the inlet of the first and second electromagnetic valves. This robot hand is capable of maintaining an object in a held position even in the event of an electric power supply failure.

REFERENCES:
patent: 4336926 (1982-06-01), Inagaki et al.
patent: 4348044 (1982-09-01), Wood

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