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:
Jun. 01, 1993
Filed:
Oct. 04, 1991
Shoichiro Hara, Amagasaki, JP;
Motokazu Ukioka, Shizuoka, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A scroll type compressor comprising: which has a peripheral portion formed with a flange, which has the fixed scroll fixed on the flange, which has a bearing at a central portion, and which has an outer peripheral surface formed with a stepped portion; a crankshaft which is rotatably supported at its upper portion by the frame bearing and which supports an electric motor rotor at a central portion; a subframe which has a central portion formed with a bearing for rotatably supporting the crankshaft at its lower end; a center shell which has an upper inner peripheral surface formed with a stepped portion engageable with the stepped portion in the frame, which has the frame shrinkage fitted thereto, shells which are connected to both ends of the center shell to form a hermetic housing; wherein the center shell has a lower inner peripheral surface formed with a stepped portion, the stepped portion in the upper inner peripheral surface and the stepped portion in the lower inner peripheral surface are formed to keep predetermined parallelism and coaxiality, and the subframe is fixed to the stepped portion in the lower inner peripheral surface.