Electric brake for commutated motor

Details Electric brake for commutated motor Electric brake for commutated motor

1995-09-28

1997-07-15

Masih, Karen

Electricity: motive power systems

Braking

Dynamic braking

318375, 318381, 318759, 310212, H02P 314

Patent

active

056487061

ABSTRACT:
A series motor for an appliance or tool, such as a circular saw, includes a regenerative braking circuit having brake windings in addition to the run windings. One of the brushholder assemblies includes a push-away feature for separating one of the brushes from the commutator prior to the time the brush could wear to an extent that direct current reversal might not be available to achieve the desired braking action.

REFERENCES:
patent: 4329611 (1982-05-01), Ohmstedt et al.
patent: 4388573 (1983-06-01), Horiuchi et al.
patent: 4488078 (1984-12-01), Orton
patent: 4725765 (1988-02-01), Prestel
patent: 5006747 (1991-04-01), Stewart, Sr.
patent: 5063319 (1991-11-01), Mason
patent: 5294874 (1994-03-01), Hessenberger et al.
Schunk & EBE GMBH publication of Jan. 1982.
Schunk Kohlenstofftechnik GmbH publication of Jan. 1995.
Ohio Carbon brochure--undated.

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