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:
Feb. 01, 2000
Filed:
May. 20, 1998
Shunichi Furuya, Ogawa-machi, JP;
Hiroshi Kanai, Higashimatsuyama, JP;
Zexel Corporation, Tokyo, JP;
Abstract
A refrigerant compressor is provided. A cylinder block has a plurality of cylinder bores axially formed therethrough. A plurality of pistons are slidably received in the cylinder bores, respectively. A housing is secured to the cylinder block and has a crankcase defined therein. A drive shaft extends through the crankcase and has one end on a cylinder block side. A torque-transmitting member is received within the crankcase and mounted on the drive shaft, for rotation in unison with the drive shaft for converting torque transmitted from the drive shaft into reciprocating motion of each of the pistons. A bearing supports the one end of the drive shaft. The cylinder block has a bearing-receiving chamber having the bearing received therein, a lubricant-collecting groove formed at a rim of a crankcase-side opening of each of at least one of the cylinder bores in a manner such that the lubricant-collecting groove is open to the crankcase, for collecting lubricant therein, and a lubricant supply passage connecting between the lubricant-collecting groove and the bearing-receiving chamber to thereby supply the lubricant collected in the lubricant-collecting groove to the crankcase. The lubricant collected at a bottom of the crankcase is drawn up by rotation of the torque-transmitting member and splashed within the crankcase.