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:
Dec. 10, 1991
Filed:
Feb. 23, 1990
Fumiaki Sano, Tokyo, JP;
Norihide Kobayashi, Tokyo, JP;
Hiroshi Ogawa, Tokyo, JP;
Noboru Masuda, Shizuoka, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A scroll type fluid transferring machine comprises a stationary scroll having a wrap member, a movable scroll having a wrap member combined with the stationary scroll, a driving means for causing the movement of revolution of the movable scroll along a circular orbit so as to make the movable scroll line-contact with the stationary scroll whereby a closed space is produced between the stationary and movable scrolls, and an Oldham ring for maintaining the stationary and movable scrolls at predetermined positions while the movement of rotation of the both scrolls are prevented, wherein the Oldham ring is formed by injection-molding at least one thermoplastic resinous material selected from the group consisting of polyphenylene sulfide, polyetheretherketone, polyetherketone, wholly aromatic polyester, polysulfone, polyarylsulfone, polyethersulfone, polyetherimide, polyoxybenzyliden polyketonsulfide, polythioethersulfone and polyarylate.