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. 13, 2023
Filed:
Jun. 16, 2022
Daikin Industries, Ltd., Osaka, JP;
Masanori Masuda, Osaka, JP;
Daikin Industries, Ltd., Osaka, JP;
Abstract
A compressor includes a drive shaft having a main shaft and an eccentric portion, and a compression mechanism having a fitted tubular portion into which a fitted shaft portion of the drive shaft is slidably fitted. The fitted shaft portion has first and second sliding surfaces formed as portions of an outer peripheral surface in the circumferential direction. The second sliding surface has a smaller axial width than the first sliding surface. A gap is adjacent to the second sliding surface into which a lubricating oil flows. An oil retainer is configured as a boundary portion between the first sliding surface and the gap to keep the lubricating oil in the gap from flowing out toward an end surface of the fitted shaft portion. The boundary portion has a central portion that protrudes further toward the first sliding surface than an end of the boundary portion in a lubricating oil flow-out direction.