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:
Apr. 09, 2002
Filed:
Jun. 01, 2000
Hiroshi Kanai, Saitama-ken, JP;
Shunichi Furuya, Saitama-ken, JP;
Zexel Corporation, Tokyo, JP;
Abstract
A swash plate compressor including a housing secured to a cylinder block having cylinder bores axially formed therethrough for receiving respective pistons therein. A swash plate is mounted on a drive shaft extending through a crankcase defined within the housing, for rotation in unison with the drive shaft. The swash plate has sliding surfaces on opposite sides thereof. A pair of shoes, each of which has a substantially semispherical shape, which slide on the sliding surfaces of the swash plate. Each piston is connected to the swash plate via a corresponding pair of the shoes, and performs a linear reciprocating motion within a corresponding cylinder bore. Guide grooves are each axially formed in an inner peripheral wall of the housing along a path of the linear reciprocating motion of the corresponding piston. Each piston has a body having a first concave portion for supporting a corresponding pair of the shoes, a swash plate-side end having a second concave portion for supporting another of the corresponding pair of the shoes, and a bridge integrally connecting the body and the swash plate-side end such that these portions are axially opposed to each other with space therebetween. The bridge extends radially outward with respect to an outer peripheral surface of the body, and is slidably fitted in a corresponding guide groove. The pistons are made of an aluminum-based material and the shoes are made of an iron-based material. A ratio of an outer diameter of the body to a diameter of an imaginary sphere formed by the corresponding pair of the pairs of shoes is 8/10 to 9/10.