Pumps – Motor driven – Including means for selectively varying motor speed or...
Patent
1977-06-15
1979-01-30
Croyle, Carlton R.
Pumps
Motor driven
Including means for selectively varying motor speed or...
417415, 417902, F04B 1700, F04B 3504
Patent
active
041370147
ABSTRACT:
This invention pertains to a multi-speed refrigerant compressor, for example, a two speed compressor operable at a relatively high speed and at a relatively low speed. Such compressor includes an electric drive motor having a fixed stator and a rotor electrically coupled to the stator and rotatable relative to the stator, a drive shaft or crankshaft driven by the rotor, and vibration dampening means engaging an end of the drive shaft or crankshaft preventing undesirable vibration thereof that could cause rubbing between the stator and the rotor of the electric drive motor during low speed operation, during high speed operation, switching from high to low speed operation, switching from low to high speed operation, start up at low speed, and start up at high speed operation.
REFERENCES:
patent: 2139313 (1938-12-01), McKinley et al.
patent: 2792512 (1957-05-01), Koch
patent: 2794691 (1957-06-01), Noe
patent: 3107626 (1963-10-01), Thoren et al.
patent: 3234881 (1966-02-01), Ekey
patent: 3302048 (1967-01-01), Gray
patent: 3565553 (1971-02-01), Rinehart et al.
patent: 3614384 (1971-10-01), Heitchue
patent: 3942912 (1976-03-01), Cawley
patent: 3955112 (1976-05-01), Sell
Croyle Carlton R.
Lennox Industries Inc.
Ross Thomas I.
LandOfFree
Two speed compressor with rotor support structure does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Two speed compressor with rotor support structure, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Two speed compressor with rotor support structure will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1148453