Pumps – Motor driven – Electric or magnetic motor
Reexamination Certificate
2005-02-01
2005-02-01
Vrablik, John J. (Department: 3748)
Pumps
Motor driven
Electric or magnetic motor
C418S094000, C418S201100
Reexamination Certificate
active
06848891
ABSTRACT:
The present invention provides an improved refrigerant compressor comprising an overall casing, an electric motor with a stator and a rotor which is mounted on a drive shaft, and a screw compressor. A compressor screw of the screw compressor is mounted on the drive shaft, which is rotatably mounted in the casing by a first radial bearing between the rotor and the compressor screw and a second radial bearing disposed on a side of the compressor screw lying opposite the first radial bearing. The drive shaft is mounted in the casing by a third radial bearing disposed on a side of the rotor lying opposite the first radial bearing. A portion of the drive shaft which extends between the first radial bearing and one of the second and third radial bearings being adapted to compensate for alignment errors between the three radial bearings.
REFERENCES:
patent: 4957417 (1990-09-01), Tsuboi
patent: 6364645 (2002-04-01), Dieterich
patent: 20010036417 (2001-11-01), Hioki et al.
patent: 1 174 621 (2002-01-01), None
patent: 54-115409 (1979-09-01), None
patent: 54-154811 (1979-12-01), None
patent: 4-159480 (1992-06-01), None
patent: 0161194 (2001-08-01), None
Patent Abstracts of Japan, Abstract of Japanese Patent “Screw Compressor”, Publication No. 06330874, Nov. 29, 1994, Japanese Application No. 05123764, Filed May 26, 1993.
Patent Abstracts of Japan, Abstract of Japanese Patent “Sealed Electric Compressor and Cooling Device”, Publication No. 07317684, Dec. 5, 1995, Japanese Application No. 06111488, Filed May 25, 1994.
Patent Abstracts of Japan, Abstract of Japanese Patent “Sealed Type Screw Compressor”, Publication No. 54115409, Sep. 8, 1979, Japanese Application No. 53022086, Filed Mar. 1, 1978.
Patent Abstracts of Japan, Abstract of Japanese Patent “Screw Compressor”, Publication No. 54154811, Dec. 6, 1979, Japanese Application No. 53062328, Filed May 26, 1978.
Bitzer Kuehlmaschinenbau GmbH
Lipsitz Barry R.
Vrablik John J.
LandOfFree
Screw compressor having bearings for the drive shaft of the... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Screw compressor having bearings for the drive shaft of the..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Screw compressor having bearings for the drive shaft of the... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3446496