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:
Sep. 10, 2002
Filed:
Nov. 03, 2000
Hideyuki Horihata, Shiga, JP;
Hiraku Shiizaki, Shiga, JP;
Shigeru Muramatsu, Shiga, JP;
Hirotsugu Fukuoka, Shiga, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A rotary compressor of the present invention includes a compression mechanism, motor and hermetically sealed housing. The compression mechanism includes compression elements, a rotary shaft and bearing. The compression elements includes a cylinder block, piston, and vane. The cylinder block has a cylinder hole and vane groove. The compression mechanism and the motor are housed in the hermetically sealed housing. The cylinder block is made up of sintered metal. The compression mechanism is welded to the hermetically sealed housing in a region other than the cylinder block. Preferably, the cylinder block includes a first cylinder block and a second cylinder block, and the first cylinder block and the second cylinder block are formed by machining sinter-molded blanks identical in shape. With this configuration, it is possible to reduce the machining processes and to make the blank parts usable in common, thereby realizing a low-cost compressor.