Electricity: motive power systems – Limitation of motor load – current – torque or force
Patent
1977-11-11
1981-05-19
Smith, Jr., David
Electricity: motive power systems
Limitation of motor load, current, torque or force
318332, 318432, H02P 516
Patent
active
042687810
ABSTRACT:
An actual speed N of a DC motor and an armature current Ia are detected to detect the motor output N.times.Ia. The motor speed is changed so that the detected motor output may not exceed a predetermined value. The spark generation of the motor brush is prevented when an over load is applied to the motor.
REFERENCES:
patent: 3421065 (1969-01-01), Stabile
patent: 3515971 (1970-06-01), Joslyn et al.
patent: 3716772 (1973-02-01), Larson
patent: 3735226 (1973-05-01), Pittner
patent: 3887855 (1975-06-01), Klimo
patent: 3950684 (1976-04-01), Peterson
Fujioka Yoshiki
Hirota Mitsuhiko
Kawada Shigeki
Nishimori Toyohiko
Oyama Shigeaki
Fujitsu Fanuc Limited
Smith Jr. David
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