The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 12, 1999
Filed:
Mar. 04, 1996
Tadashi Iizuka, Ashikaga, JP;
Reishi Naka, Tochigi-ken, JP;
Katsumi Fukuda, Tochigi-ken, JP;
Makoto Tanaka, Kanuma, JP;
Yoshiharu Homma, Hitachi, JP;
Hiroaki Hata, Tochigi-ken, JP;
Hirokatsu Kousokabe, Ibaraki-ken, JP;
Koji Nariyoshi, Tochigi-ken, JP;
Hiroshi Iwata, Odawara, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A refrigerant compressor using a refrigerant composed mainly of a fluorocarbon and/or hydrofluorocarbon type refrigerant containing no chlorine and having a critical temperature of 40.degree. C. or higher, and a refrigerating machine oil comprising as base oil an ester oil of one or more fatty acids which contains at least two ester linkages ##STR1## in the molecule and has a viscosity at 40.degree. C. of 2 to 70 cSt and a viscosity at 100.degree. C. of 1 to 9 cSt. The winding wire of the stator of the compressor has a core wire having an enamel coating having a glass transition temperature of 120.degree. C. or higher.