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:
Jan. 02, 1990
Filed:
Oct. 22, 1987
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
In a variable capacity compressor having a rotary type cylinder compartment (24a), plural return ports (33) formed in a volume-decrease-step space in the cylinder compartment (24a), an exit (34) formed in a volume-increase-step space in the cylinder compartment (24a), a C-shaped guide passage (35) for connecting the plural return ports (33) and the exit (34), an arc-shaped slider (36) provided slidably for gradually opening and closing the plural return ports (33), a spring (37) for pushing the arc-shaped slider (36), and a pressure control valve (42) for pushing the arc-shaped slider (36) in opposite direction to the pushing of the spring are provided; and thereby a wide variable capacity range is realized with compact size and high efficiency.