Pumps – Three or more cylinders arranged in parallel – radial – or...
Reexamination Certificate
2005-09-13
2005-09-13
Freay, Charles G (Department: 3746)
Pumps
Three or more cylinders arranged in parallel, radial, or...
C092S071000, C184S006170
Reexamination Certificate
active
06942465
ABSTRACT:
A compressor is disclosed having a gas extraction passage, internally formed in a drive shaft and continuously communicating with a crank chamber and a suction chamber, that has an inlet portion, to be exposed to the crank chamber, is formed in the drive shaft in a radial direction. As a result, mist-like oil accompanied by blow-by gas tending to flow into the gas extraction passage initially impinges upon and adheres to an inner peripheral surface of the inlet portion of the gas extraction passage due to rotational movement of the drive shaft. Namely, oil separation (gas-liquid separation) occurs at the inlet portion of the gas extraction passage. Then, oil separated from the blow-by gas at the inlet portion of the gas extraction passage is forcibly returned to the crank chamber due to a centrifugal force caused by rotational movement of the drive shaft. Accordingly, the compressor has a structure in which oil accompanied by blow-by gas is hard to escape the suction chamber.
REFERENCES:
patent: 4729719 (1988-03-01), Kayukawa et al.
patent: 5181834 (1993-01-01), Ikeda et al.
patent: 5286172 (1994-02-01), Taguchi
patent: 5332365 (1994-07-01), Taguchi
patent: 6786703 (2004-09-01), Breindel et al.
patent: 5-231309 (1993-09-01), None
patent: 6-123280 (1994-05-01), None
Higano Susumu
Kageyama Hiroshi
Kawachi Masaki
Makishima Hiroyuki
Ogawa Masanori
Calsonic Kansei Corporation
Freay Charles G
LandOfFree
Compressor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Compressor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Compressor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3391545