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:
Jul. 16, 2019
Filed:
Jan. 20, 2014
Panasonic Appliances Refrigeration Devices Singapore, Singapore, SG;
Ko Inagaki, Shiga, JP;
Masanori Kobayashi, Shiga, JP;
Yu Haraki, Osaka, JP;
Yoshinori Ishida, Kyoto, JP;
PANASONIC APPLIANCES REFRIGERATION DEVICES SINGAPORE, Singapore, SG;
Abstract
A hermetic compressor () includes an electric element (), a compression element (), and a hermetic container (). The compression element includes a shaft (), a cylinder block (), a piston (), a connection section (), and an oil supply mechanism (). The piston has a columnar seal section () in sliding contact with an inner peripheral face of the cylinder, two extension sections () that have circular arc faces each having the same radius as a radius of the seal section and extend from the seal section to the bottom dead center side in the axial direction with a circumferential gap therebetween, and a columnar capture section () that extends further toward the bottom dead center side than the extension section and has a smaller radius than the radius of the seal section.