Brush holder assembly for dynamoelectric machines

Details Brush holder assembly for dynamoelectric machines Brush holder assembly for dynamoelectric machines

2007-05-15

2007-05-15

Le, Dang (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S244000, C310S246000

Reexamination Certificate

active

11002433

ABSTRACT:
A brush holder assembly that cannot be assembled incorrectly includes a brush inserted into a brush holder, a block attached to the top of the brush, a spring engaging the block that applies radial pressure to the block and brush, and a hook pin that holds the spring onto the block. The block includes a semicircular indentation that cradles a coiled portion of the spring and includes a slotted hole for receiving a portion of the hook pin as the block is glued to the top of the brush. The hook pin is a loop terminating at a first end that is a straight pin and terminating at a second end that is a hook-shaped loop in which the straight pin end is inserted. Alternatively, a U-shaped spool assembly can be used to engage the coiled portion of the spring to lock it in the indentation in the block.

REFERENCES:
patent: 1277394 (1918-09-01), Dean
patent: 3521102 (1970-07-01), Sen
patent: 3710478 (1973-01-01), Krulls et al.
patent: 3864803 (1975-02-01), Ohmstedt et al.
patent: 4296346 (1981-10-01), Ooki et al.
patent: 4329683 (1982-05-01), Kimberlin
patent: 4366404 (1982-12-01), Ziegler
patent: 4663552 (1987-05-01), Ohmstedt
patent: 5043619 (1991-08-01), Kartman, Jr.

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