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. 27, 1993
Filed:
Aug. 28, 1991
Matsushita Refrigeration Company, Osaka, JP;
Abstract
A hermetically sealed compressor for use in household appliances such as refrigerators comprising an electric element and a compression element being resiliently supported within a hermetic container. The crankshaft is secured to a rotor of an electric element and supported by a pair of ball bearings. The crankshaft is comprised of a concentric principal part, a concentric secondary part and an eccentric axial part positioned between the principal part and the secondary part. The eccentric axial part is connected to one end of a connecting rod. In one embodiment, the eccentric axial part overlays all of the principal part and secondary part when seen in plan or projection view from the axial direction of the crankshaft. One of a pair of ball bearings is installed in each of the concentric principal part and secondary part respectively so as to support the load caused by the reaction of the compression load equally on each side of the axis along which the force of that load is exerted.