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:
Nov. 08, 1983
Filed:
Jan. 22, 1982
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
This invention relates to a compressor controllable in capacity, and more particularly to a compressor comprising a rotor having vanes slidably fitted thereto, a cylinder for receiving the rotor and vanes, side plates rigid on both sides of the cylinder and enclosing a space of a vane chamber defined by the vanes, rotor and cylinder at the sides thereof, and inlet and outlet ports each serving as a passage to communicate the vane chamber with the exterior, wherein the cylinder is oriented to have its top portion where a distance between the outer periphery of the rotor and the inner periphery of the cylinder becomes minimum. The improvement according to this invention is in that the inlet port is positioned so as to make a(.theta.) almost constant, or meet a(.theta.)=a, in a range of 1/2.theta..sub.s <.theta..ltoreq..theta..sub.s and parameters of the compressor are determined to meet the following relation;