Brush holding apparatus for a dynamoelectric machine

Details Brush holding apparatus for a dynamoelectric machine Brush holding apparatus for a dynamoelectric machine

1991-01-22

1991-10-22

Skudy, R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 42, 310 89, 310 91, 310240, 310242, H02K 1300

Patent

active

050598465

ABSTRACT:
A brush holding assembly comprises two elements: a body element semi-permanently secured to the machine housing and a cartridge element detachably secured to the body element. The cartridge element includes at least one brush compartment having upper and lower faces with brush openings through which an elongated brush element can be inserted. The face of the cartridge element which is adapted to be secured to the body element has a service opening for spring insertion. At the time of servicing, a twin coiled spring is inserted into the compartment via the service opening and the new brush is inserted into the compartment via the lower face brush opening. As the brush is more fully inserted, it engages the spring element between its coils, and the end of the brush eventually emerges through the upper face brush opening, unwinding the spring coils which are retained within the compartment by the upper face of the cartridge element. The fully inserted brush is retained within the compartment by a retractor clip until the cartridge element is reattached to the body element.

REFERENCES:
patent: 2763801 (1956-09-01), McDonald
patent: 3271605 (1966-09-01), Drabik
patent: 3430084 (1969-02-01), Hall
patent: 3983432 (1976-09-01), Rankin
patent: 4075523 (1978-02-01), Lafferty, Sr.
patent: 4296346 (1981-10-01), Ooki
patent: 4347455 (1982-08-01), Major
patent: 4389588 (1983-06-01), Rankin
patent: 4409508 (1983-10-01), Ooki
patent: 4663552 (1987-05-01), Ohmstedt
patent: 4800313 (1989-01-01), Warner
Vulcan "Constant Force Spring Design Guide"; (no month) 1987; Vulcan Spring & Mfg., Co; pp. 1-3, 7.

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