Electricity: motive power systems – Automatic and/or with time-delay means – Pressure in a fluid or granular material
Patent
1986-03-24
1987-10-06
Shoop, Jr., William M.
Electricity: motive power systems
Automatic and/or with time-delay means
Pressure in a fluid or granular material
901 49, H02H 708, B25J 1906
Patent
active
046985689
ABSTRACT:
An antiexplosion structure in an electric motor drive type working robot includes a sealing structure for sealingly enclosing electric motors for driving the robot and wirings for the motors. Dry air is continuously fed into the sealing structure at a pressure higher than the environmental atmosphere. A pressure detector detects the pressure of the dry air within the sealing structure to permit electric current feed to the electric motors only when the detected pressure has a normal value.
REFERENCES:
patent: 3289485 (1966-12-01), Cazalis et al.
patent: 3335323 (1967-08-01), Molin
Chikura Takashi
Nishizawa Shun-ichi
Tsubota Toshio
Mitsubishi Jukogyo Kabushiki Kaisha
Ro Bentsu
Shoop Jr. William M.
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