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:
Mar. 25, 2008
Filed:
Feb. 02, 2007
Yoshimitsu Sekiya, Moriya, JP;
Kiyoshi Tanaka, San Paulo, BR;
Shuji Fukano, Wako, JP;
Hironori Nakai, Nagareyama, JP;
Yoshifusa Kubota, Moriya, JP;
Teiji Shozu, Jyoso, JP;
Yoshimitsu Sekiya, Moriya, JP;
Kiyoshi Tanaka, San Paulo, BR;
Shuji Fukano, Wako, JP;
Hironori Nakai, Nagareyama, JP;
Yoshifusa Kubota, Moriya, JP;
Teiji Shozu, Jyoso, JP;
Mayekawa Mfg. Co., Ltd., , JP;
Abstract
An oil refrigeration screw compressor being applied to a refrigeration system etc., in which the problem of strength reduction of a bearing material under high temperatures and that of lifetime reduction of the bearing material due to viscosity lowering of lubricant are solved. A lubricant supply system to a compressor body is divided into a bearing oil supply system for supplying lubricant to each bearing of the compressor body at low pressure and into a temperature control oil supply system for supplying lubricant into the compressor body at high pressure. The bearing oil supply system is a closed circuit oil supply system comprising an oil supply tank, an oil cooler, and an oil supply pump, and the temperature control oil supply system is a closed circuit oil supply system comprising an oil separator and an oil cooler.