Double coil constant force extension spring bracket

Details Double coil constant force extension spring bracket Double coil constant force extension spring bracket

1982-08-24

1985-11-05

Skudy, R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310145, 29597, H02K 1300

Patent

active

045516464

ABSTRACT:
A brush holder assembly providing longer brush life and easy brush replacement is disclosed. The assembly uses a removeable spring bracket to extend a double coil constant force extension spring straddling a brush. The bracket, straddling the spring and brush, is inserted into a brush holder, whereupon it slideably engages the coils of the extension spring, causing it to extend. The bracket is removeable from the holder so that the extension spring and brush can be removed to replace a worn or broken brush.

REFERENCES:
patent: 2695468 (1954-11-01), Welch
patent: 2848633 (1958-08-01), Atamian
patent: 3430084 (1969-02-01), Hall
patent: 3430915 (1969-03-01), Vogelsberg
patent: 3898493 (1975-08-01), Schaffer
patent: 4389598 (1983-06-01), Rankin
patent: 4413200 (1983-01-01), Fenicle
Data Book, Sec. 70.3, pp. 4-9, issued 3/22/56 by Hunter Spring Company, Lansdale, Pa.

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