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. 23, 1999
Filed:
Feb. 25, 1997
Masahiko Makino, Hashimoto, JP;
Akihiko Shimizu, Kusatsu, JP;
Tatsuhisa Taguchi, Katano, JP;
Daisuke Ito, Meyagawa, JP;
Matshushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A variable capacity control scroll compressor, including: a cylinder disposed in the end plate of the fixed scroll incorporating a reciprocating shuttle valve to selectively enable fluid passage through a first group of bypass holes communicating with a pair of fluid pockets in a given compression stroke, and further through a second group of bypass holes communicating with a single fluid pocket as the pair of fluid pockets merge into one pocket during compression, sequential opening and closing of these bypass holes being controlled by a pressure control valve administering a control pressure Pm to operate the shuttle valve, the control valve being provided in the fixed end plate such that all of the control mechanism components are integrated into a single structure to reduce fabrication costs and enhance control efficiency.