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 at the opposite end of the shaft, said shaft extending between the first frame and the second frame for driving the orbiting scroll. A first bearing is disposed between the main shaft and the first frame for supporting the main shaft at a position at 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 the opposite end of the shaft. The main shaft having an eccentric hole that contains a rotatable eccentric bushing. The bushing includes a passage for continuous flow of lubricant during shaft rotation and a structure that restricts the rotation of the bushing and prevents it from moving in an axial direction.