Rotor end cap

Details Rotor end cap Rotor end cap

1997-09-30

1998-11-03

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 51, 310 60, 310 61, 310 62, 310 68B, 310261, H02K 900

Patent

active

058313583

ABSTRACT:
A rotor end cap for use with a rotor of a dynamoelectric machine to induce cooling air circulation, facilitate rotor balancing and enable rotor rotational position and speed sensing. The rotor end cap includes a base for attachment to a rotor of the dynamoelectric machine so that the base turns with the rotor. Further, the end cap includes a plurality of blades extending from the base in axial and radial directions with respect to the rotor for moving air to enhance cooling air circulation within the machine as the rotor turns. Still further, the end cap includes a balancing device extending from the base for altering a weight distribution around the base to balance the rotor. Yet still further, the end cap includes at least one shutter extending partially around the base for intermittently blocking passage of light as the rotor turns to enable rotational position and speed sensing of the rotor.

REFERENCES:
patent: 3906266 (1975-09-01), Cowman
patent: 4082968 (1978-04-01), Jones
patent: 4115030 (1978-09-01), Inagaki et al.
patent: 4184804 (1980-01-01), Inagaki et al.
patent: 4553055 (1985-11-01), Auernhammer
patent: 4862025 (1989-08-01), Dierker, Jr. et al.
patent: 5070268 (1991-12-01), Phelon et al.
patent: 5144175 (1992-09-01), Craggs
patent: 5272402 (1993-12-01), Blaser et al.
patent: 5375637 (1994-12-01), Matsumoto et al.

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