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:
Aug. 28, 1984
Filed:
Mar. 09, 1982
Sanden Corporation, Gunma, JP;
Abstract
A scroll type compressor is disclosed. The compressor includes a housing. A fixed scroll is joined to the housing and includes a first end plate from which a first wrap extends. An orbiting scroll also includes second end plate from which a second wrap extends. The wraps interfit at an angular and radial offset to make a plurality of line contacts to define at least one pair of sealed off fluid pockets. The first end plate is formed with at least two holes which are placed at the symmetrical positions. A first of the holes is placed at a location, defined by involute angles, within the area defined by .phi. end >.phi.1>.phi. end-2.pi., where .phi.0 end is the final involute angle of the wrap which extends from the end plate having the holes, and .phi. 1 is the involute angle at which the first hole is placed. The second hole is located at an involute angle approximately .phi.1-.pi.. A control mechanism controls the opening and closing of the holes to thereby control the capacity of compressor.