Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1987-05-21
1989-01-24
Skudy, R.
Electrical generator or motor structure
Dynamoelectric
Rotary
310 42, 310 71, 310244, 29596, H02K 1300
Patent
active
048003123
ABSTRACT:
A small electric motor includes a wound rotor or armature, a segmented commutator and brushes biased lengthwise against the commutator for providing a circuit through which the armature is energized. Each brush is part of an assembly that also includes a conducting brush tube from which the brush extends, and an insulating tube in which the brush tube is frictionally held. Aligned pivot projections extend transversely from opposite sides of the insulating tube and are received by recesses in the motor frame. The recess walls provide bearing formations that are engaged by the pivot projections to cooperate therewith so that during mounting of the insulating tube and elements assembled therewith, the insulating tube is pivoted from an oblique intermediate position to a final operating position. A single screw threadably engaged in the motor frame locks the insulating tube in this final operating position. Tightening of this screw generates a wedging action that stabilizes the insulating tube in its final operating position.
REFERENCES:
patent: 2345428 (1944-03-01), Rhoads
patent: 2345429 (1944-03-01), Hanna
patent: 2753477 (1956-07-01), Yahn
patent: 3226585 (1965-12-01), Roe
patent: 3308321 (1967-03-01), Provost, Jr.
patent: 3523288 (1970-08-01), Thompson
patent: 3603824 (1971-09-01), Csaki
patent: 3656016 (1972-04-01), Jacyno
patent: 3710159 (1973-01-01), Dupuis
patent: 4166968 (1979-09-01), Prittie
patent: 4190781 (1980-02-01), Sauerwein
Crevling, Jr. R. Lent
Wacek Rudolph W.
Shop-Vac Corporation
Skudy R.
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