Ventilation structure in a vertically mounted motor

Details Ventilation structure in a vertically mounted motor Ventilation structure in a vertically mounted motor

1992-03-25

1993-02-09

Voeltz, Emanual T.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 56, 310 88, 310157, 310 90, 384476, 384478, H02K 926, H02K 708, F16C 1950

Patent

active

051855445

ABSTRACT:
A ventilation structure in a vertically mounted motor is able to avoid clogging from accumulated brush abrasion dust. A ventilation path adapted to provide ventilation between the interior and the exterior of the motor casing is formed from a communication hole defined in a bottom portion of the motor casing, extending between the exterior of the motor casing and a circular hole defined in the bottom portion of the motor casing; a communication groove defined in an annular rib, extending upwardly from the bottom portion of the motor casing to form a bearing seat and encircling the circular hole to bypass the bearing in the bearing seat; and a gap C defined between the annular rib and a cap member covering the bearing and annular rib.

REFERENCES:
patent: 1145516 (1915-07-01), Schmid et al.
patent: 2059872 (1936-11-01), Hull
patent: 2100020 (1937-11-01), Andrews
patent: 2571267 (1951-10-01), Ljunggren
patent: 3159354 (1964-12-01), Yartz et al.
patent: 3486050 (1969-12-01), Dederick
patent: 4586880 (1986-05-01), Inao et al.

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