Bearing support for cylindrical rotating shaft bearing

Details Bearing support for cylindrical rotating shaft bearing Bearing support for cylindrical rotating shaft bearing

1995-08-23

1998-10-13

Dougherty, Thomas M.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 90, 310 67R, 310 43, 310 91, 384204, H02K 516

Patent

active

058216545

ABSTRACT:
A brushless motor having a plurality of weight reducing holes is disclosed. The weight reducing holes are formed in the thick parts of the stator housing of the motor to prevent shrinkage of the thick parts of the housing when forming the housing through injection molding. The weight reducing holes are formed in the housing by appropriately positioning cores in the mold before injecting melted resin into the mold. The weight reducing holes are formed in a bearing seat mouth of the housing as well as in an outer portion of the mouth.

REFERENCES:
patent: 2421592 (1947-06-01), Bergman
patent: 3483407 (1969-12-01), Frohmuller et al.
patent: 4117359 (1978-09-01), Wehde
patent: 4471250 (1984-09-01), Snider
patent: 4591276 (1986-05-01), Schneider et al.
patent: 5405199 (1995-04-01), Mabuchi et al.

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