Torque limiting device for an electric motor

Details Torque limiting device for an electric motor Torque limiting device for an electric motor

2007-06-26

2007-06-26

Duda, Rina (Department: 2837)

Electricity: motive power systems

Constant motor current, load and/or torque control

C318S434000, C318S599000, C318S811000, C388S811000, C388S837000, C173S004000

Reexamination Certificate

active

10933857

ABSTRACT:
A rotary speed limiting device for an electric motor has a current detecting device for detecting a motor current of the electric motor, a nominal value setting for adjusting a torque, a control and/or regulating device which limits the motor current to a maximum value depending on the nominal value setting, a rotary speed detecting device for detecting a rotary speed of the electric motor, the control and/or regulating device determining a maximum value of the motor current depending on the rotary speed determined by the rotary speed detecting device.

REFERENCES:
patent: 5014793 (1991-05-01), Germanton et al.
patent: 5154242 (1992-10-01), Soshin et al.
patent: 5285857 (1994-02-01), Shimada
patent: 5440215 (1995-08-01), Gilmore
patent: 6607385 (2003-08-01), Sevcik et al.
patent: 6680595 (2004-01-01), Ito
patent: 1 226 789 (1992-07-01), None
patent: 0 555 8444 (1993-08-01), None
patent: 4-2711 (1992-01-01), None
patent: 4-343636 (1992-11-01), None
Patent Abstracts of Japan JP-09136144 A, May 27, 1997.

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