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:
Sep. 29, 1992
Filed:
Aug. 15, 1991
Kabushiki Kaisha Toyoda Jidoshokki Seisakusho, Kariya, JP;
Abstract
A scroll type compressor has a stationary scroll (1) and a movable scroll (2) rotating around the former in an orbital manner, while forming volume variable sealed spaces therebetween to compress a coolant gas. To reduce a wall thickness of the scroll, an outer wall curve (E.sub.1.sup.+) of the scroll (1,2) is defined by the modification of a basic involute curve (D.sup.+) by reducing a certain value B.theta..sup.n) from a length (L.sub.0) of the respective involute line of the basic involute curve, which value is increased as the involute angle (.theta.) is developed, and an inner wall curve (E.sub.1.sup.-) is generated from the outer wall curve (E.sub.1.sup.+) by first transferring the respective point (p.sub.3, 4) on the outer wall curve (E.sub.1.sup.+) in the normal direction to the outer wall curve (E.sub.1.sup.+) at the respective point (p.sub.3, 4) by a distance (r) equal to a radius of the orbital circle (R) to form an intermediate curve (E.sub.1) and then symmetrically transferrring the respective point (p.sub.5) on the intermediate curve (E.sub.1) around the center (O.sub.1) of the basic circle (C.sub.1).