Porous bearing system having internal grooves and electric motor

Details Porous bearing system having internal grooves and electric motor Porous bearing system having internal grooves and electric motor

1998-01-14

1999-08-03

Ramirez, Nestor

Electrical generator or motor structure

Dynamoelectric

Rotary

310 90, 310 905, 384100, 384291, 384279, H02K 709

Patent

active

059329467

ABSTRACT:
An improved porous bearing and a motor which is provided with the porous bearing in which the friction losses and reflection of shaft are reduced, noises caused by the vibrations are avoided with low cogging or low jitter, and in addition, the manufacturing process is simplified to obtain long-life products at low cost. The number (C) of grooves of the porous bearing meets at least one of the following equations:

REFERENCES:
patent: 4602873 (1986-07-01), Izumi et al.
patent: 4726693 (1988-02-01), Anderson et al.

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