Mounting device for brushes in a reversible commutator motor

Details Mounting device for brushes in a reversible commutator motor Mounting device for brushes in a reversible commutator motor

1989-02-15

1990-12-18

Skudy, R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 50, 310 71, 310229, 310238, 318292, H02K 1300

Patent

active

049788779

ABSTRACT:
The invention concerns a device for mounting a pair of carbon brushes in an electric hand tool. To allow for the reversibility of the motor the device is mounted rotatably relative to the shaft of the motor. Further, the device is also used on the switch for reversing the polarity of the field windings by having a handgrip extending outside of the motor housing and having contacts for contacting relative fixed contacting strip members. By further using a bayonet-shaped structure, construction is simplified and the number of total parts is reduced.

REFERENCES:
patent: 2764705 (1956-09-01), Albertson
patent: 3440465 (1969-04-01), Pratt
patent: 3681550 (1972-08-01), Perry
patent: 4342931 (1982-08-01), Grossmann
patent: 4348603 (1982-09-01), Huber
patent: 4401908 (1983-08-01), Cabaussel
patent: 4523116 (1985-06-01), Dibbern, Jr.
patent: 4748353 (1988-05-01), Klingenstein

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