Rotary kinetic fluid motors or pumps – Including heat insulation or exchange means – Cooling fluid contacts shaft – seal or bearing
Reexamination Certificate
2006-10-31
2006-10-31
Ridley, Richard (Department: 3682)
Rotary kinetic fluid motors or pumps
Including heat insulation or exchange means
Cooling fluid contacts shaft, seal or bearing
C415S090000, C062S114000, C428S408000, C384S279000, C418S055100
Reexamination Certificate
active
07128528
ABSTRACT:
The object of the present invention is to provide: high-reliability and long-life CO2refrigerant compressor-use bearings that uses bearing materials high in wear resistance and in baking resistance, and; such a compressor, air conditioner, refrigerator, and hot-water supply machine that each employ these bearings.The CO2refrigerant compressor-use bearings according to the present invention, and the compressor, air conditioner, refrigerator, and hot-water supply machine that employ these bearings, wherein the bearings are characterized in that each bearing comprises a cylindrically shaped member whose graphite-containing carbonaceous base material has pores impregnated with tin or with one type of metal selected from the IB group or the VIII group, except iron, or with an alloy based on these metals, and in that each bearing satisfies at least one of the requirements that the bearing should comprise a carbonaceous base material containing 20 to 50 weight percent graphite, that the Shore hardness of the corresponding member should range from 65 to 120, that the compressive strength of the corresponding member should range from 200 to 500 MPa, that the porosity rate of the corresponding member should range from 0.05 to 2.00 volume percent, and that the metal or alloy contained in the corresponding member should contain at least either vanadium or titanium or both at the rate of 0.2 weight percent or less.
REFERENCES:
patent: 4396677 (1983-08-01), Intrater et al.
patent: 5495979 (1996-03-01), Sastri et al.
patent: 5557944 (1996-09-01), Hirano et al.
patent: 5580834 (1996-12-01), Pfaff
patent: 5690997 (1997-11-01), Grow
patent: 5707567 (1998-01-01), Pfaff
patent: 5834115 (1998-11-01), Weeks, Jr. et al.
patent: 6189322 (2001-02-01), Ishihara et al.
patent: 3240709 (1984-05-01), None
patent: 19642506 (1997-10-01), None
patent: 1055650 (2000-11-01), None
patent: 2219133 (1974-09-01), None
patent: 02-248676 (1990-10-01), None
patent: 02-275114 (1990-11-01), None
6001 Chemical Abstracts 116 Mar. 9, 1992, No. 10, pp. 403.
Baba Noboru
Fukuda Toshiomi
Iizuka Tadashi
Nakashima Shouichi
Ogura Hiroaki
Crowell & Moring LLP
Hansen Colby
Hitachi , Ltd.
Ridley Richard
Toyo Tanso Co., Ltd.
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