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:
Oct. 27, 1987
Filed:
Oct. 06, 1986
Tsutomu Inaba, Wakayama, JP;
Masahiro Sugihara, Wakayama, JP;
Toshiyuki Nakamura, Wakayama, JP;
Masahiko Oide, Wakayama, JP;
Tadashi Kimura, Wakayama, JP;
Norihide Kobayashi, Wakayama, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A scroll-type compressor including stationary and orbiting scrolls housed in a shell. A first frame, also housed in the shell, receives a portion of the orbiting scroll. The stationary scroll is fixed to the first frame, and a second frame is further mounted in the shell. A balancer chamber is formed between the first and second frames. A main shaft having a balancer is housed in the balancer chamber rotatably. The main shaft includes an enlarged diameter portion on one end of the shaft which is attached to the orbiting scroll and a small diameter portion on the end of the shaft which is attached to the orbiting scroll and extending between the first frame and the second frame for driving the orbiting scroll. A first bearing is disposed between the main shaft in the first frame for supporting the main shaft at a position between the orbiting scroll end of the shaft. A second bearing is disposed between the main shaft and the second frame for supporting the main shaft at a position proximate opposite the end of the shaft. The main shaft has an eccentric hole at the upper enlarged diameter portion thereof that can receive the shaft of the orbiting scroll. The main shaft has an oil passage connecting the lower end of the shaft, that is dipped into an oil pan, to the upper end of the shaft at the eccentric hole. The passage is structured to suck oil from the oil pan to the eccentric hole during rotation of the shaft. The eccentric hole has oil holes and passages that permit lubrication to flow to the appropriate bearings.