Electric motor driving apparatus

Details Electric motor driving apparatus Electric motor driving apparatus

2008-05-06

2008-05-06

Sherry, Michael (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

Motor protective condition responsive circuits

C361S091100, C361S091700, C361S118000

Reexamination Certificate

active

07369378

ABSTRACT:
A surge protective circuit and a noise filter circuit are provided in a power-supplying line, the surge protective circuit is adapted for protecting a switching device from surge voltage generated during operation of an electric motor and the noise filter circuit is adapted for absorbing noise generated during operation of the switching device, each of the surge protective circuit and the noise filter circuit include a plurality of elements, wherein at least one of the plurality of the elements constructing the surge protective circuit is used as at least one of the plurality of the elements constructing the noise filter circuit in common with each other.

REFERENCES:
patent: 3579065 (1971-05-01), Laukaitis
patent: 4721870 (1988-01-01), Rector et al.
patent: 5642033 (1997-06-01), Bartol et al.
patent: 5811948 (1998-09-01), Sato et al.
patent: 5815037 (1998-09-01), Tomasini et al.
patent: 7119551 (2006-10-01), Burdick
patent: 2003/0107905 (2003-06-01), Miura et al.
patent: 0 240 172 (1987-10-01), None
patent: 3067601 (2000-05-01), None

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