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:
May. 19, 2026
Filed:
Jun. 29, 2022
Lg Electronics Inc., Seoul, KR;
LG ELECTRONICS INC., Seoul, KR;
Abstract
A reciprocating compressor including a crankshaft including a shaft portion, an eccentric mass portion, and a pin portion, and an oil groove positioned on an outer surface of the pin portion configured to supply oil to a pressurized portion of a bearing immediately before entering a section in which a gas load increases. For example, the oil groove may supply the oil to the bearing in a stroke section immediately before a crank angle reaches 270°. Accordingly, lubrication by the oil may be smoothly performed in the stroke section subjected to a high load, and oil shortage may be improved even if the oil groove adopts a structure in which the bearing is open at the top and bottom.