Electricity: motive power systems – Constant motor current – load and/or torque control
Patent
1975-05-01
1977-04-26
Hickey, Robert J.
Electricity: motive power systems
Constant motor current, load and/or torque control
30 96, 219161, 269216, 318434, B23K 3704, H02P 700
Patent
active
040204057
ABSTRACT:
A pipe cutting and/or welding device has a chuck for rotating the pipe with the chuck jaws connected with an activating device provided with torque limiting means. The torque limiting means has an adjusting device for switching from a low torque value for the clamping of the pipe to a high torque value for releasing the pipe.
REFERENCES:
patent: 3063708 (1962-11-01), Wollenhaupt
patent: 3279059 (1966-10-01), Keiter
patent: 3309595 (1967-03-01), Safar
Becker Werner
Schumann Gunter
Hickey Robert J.
Messer Griesheim GmbH
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