Snap ring for electric motor

Details Snap ring for electric motor Snap ring for electric motor

1989-12-04

1991-10-22

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Rotary

384903, 29596, 310 42, H02K 708

Patent

active

050598449

ABSTRACT:
A snap ring is provided for receipt within a circumferential groove of a bore to maintain a motor shaft and bearing assembly within a housing. The ring has an open sector to allow for flexibility. In one embodiment, a number of lobes, defined by tapered inwardly declining surfaces extend from the ring and protrude from the groove into the bore. As a bearing is urged past the groove, the lobes are urged into the groove to allow the bearing to pass. Once the bearing has cleared the groove, the spring-like nature of the ring causes the lobes to again extend into the bore such that bottom surfaces of the lobes engage a top surface of the bearing, retaining the bearing and shaft assembly within the bore. In another embodiment, the ring has a number of lobes defined by tapered outwardly declining surfaces, while a third embodiment includes lobes defined by alternating inwardly and outwardly tapered declining surfaces.

REFERENCES:
patent: 2487803 (1949-11-01), Heimann
patent: 4968910 (1990-11-01), Meier et al.

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