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:
Apr. 22, 2014
Filed:
Apr. 18, 2008
Masato Kaneko, Chiba, JP;
Harutomo Ikeda, Chiba, JP;
Takayuki Kato, Aichi, JP;
Takahiro Hoshida, Aichi, JP;
Masaki Inoue, Aichi, JP;
Shozo Ikejima, Aichi, JP;
Masataka Muto, Aichi, JP;
Masahito Yamashita, Aichi, JP;
Masato Kaneko, Chiba, JP;
Harutomo Ikeda, Chiba, JP;
Takayuki Kato, Aichi, JP;
Takahiro Hoshida, Aichi, JP;
Masaki Inoue, Aichi, JP;
Shozo Ikejima, Aichi, JP;
Masataka Muto, Aichi, JP;
Masahito Yamashita, Aichi, JP;
Idemitsu Kosan Co., Ltd., Tokyo, JP;
Kabushiki Kaisha Toyota Jidoshokki, Kariya-shi, JP;
Denso Corporation, Kariya-shi, JP;
Abstract
A lubricating oil composition for refrigerators comprising a base oil which comprises as a main component a polyol ester compound obtained from a polyhydric alcohol selected from among pentaerythritol, dipentaerythritol, trimethylolpropane, and neopentyl glycol and a Cto Caliphatic monocarboxylic acid and which has an acid value of 0.02 mgKOH/g or less and a hydroxyl value of 5 mgKOH/g or less. A compressor using the lubricating composition. The lubricating oil composition is applicable to such refrigerators that use a refrigerant having a specific structure, such as an unsaturated fluorinated hydrocarbon compound, and being usable in current car air conditioner systems, and has excellent compatibility with the refrigerant, good sealing properties, capability of imparting a low coefficient of friction to sliding members and, yet, excellent stability. The compressor uses the lubricating composition.