Brush holder assembly having dynamic loading

Details Brush holder assembly having dynamic loading Brush holder assembly having dynamic loading

1998-01-21

1999-05-18

Dougherty, Thomas M.

Electrical generator or motor structure

Dynamoelectric

Rotary

310245, H01R39/38;39/40

Patent

active

059053232

ABSTRACT:
An improved method for the manufacture of a compact brush guide holder assembly which is commonly found on machines in which electricity is to be transferred between an electrically conductive brush element as it moves and makes contact with a rotatable conductor such as a commutator. The brush holder assembly has an open body guiding channel, or chamber, for supporting the electrically conductive brush element which receives compressed tension from a fixed non-removable constant force spring which is composed of a beam uncoiled section in addition to a coiled section having fixed mounted Teflon bushings that are free to ride and float horizontally and vertically on mounting post that pass through its center. Upon compression, the contour structural integrity and memory characteristics of the constant force spring are maintained as it self adjusts to the dynamic loads and tension requirements of a rush as it biases a commutator.

REFERENCES:
patent: 3025421 (1962-03-01), Sievert
patent: 4371803 (1983-02-01), Schindel et al.
patent: 4785214 (1988-11-01), Mummert

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