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:
Dec. 05, 2006
Filed:
Jul. 15, 2002
Yoshinori Ishida, Kanagawa, JP;
Toshihiko Ota, Kanagawa, JP;
Terumasa Ide, Kanagawa, JP;
Makoto Katayama, Kanagawa, JP;
Takafumi Horiguchi, Kanagawa, JP;
Takahide Nagao, Kanagawa, JP;
Yoshinori Ishida, Kanagawa, JP;
Toshihiko Ota, Kanagawa, JP;
Terumasa Ide, Kanagawa, JP;
Makoto Katayama, Kanagawa, JP;
Takafumi Horiguchi, Kanagawa, JP;
Takahide Nagao, Kanagawa, JP;
Matsushita Refrigeration Company, Shiga, JP;
Abstract
A hermetic electric compressor is capable of efficiently pumping up a necessary amount of lubricating oil even at low-speed rotation and has a simple constitution to provide an excellent workablity in assembling. The hermetic electric compressor includes an oil pump. The oil pump includes (i) a slanting channel formed in the lower portion of a main shaft and slanting from the lower portion to the upper portion thereof outwardly, (ii) a throttle formed at the bottom end of the main shaft and having an inlet port of diameter smaller than the section of the slanting channel at the center thereof, and (iii) a lower communicating passage for providing a communication between the bottom end of a spiral groove and the slanting channel. This constitution is capable of effectively lift the head of the lubricating oil.