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:
Nov. 06, 2001
Filed:
Jun. 07, 2000
Makoto Takeuchi, Nagoya, JP;
Tetsuzou Ukai, Nishi-kasugai-gun, JP;
Shigeki Miura, Nishi-kasugai-gun, JP;
Kazuhide Watanabe, Nishi-kasugai-gun, JP;
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Abstract
A thrust ball bearing provided in an open scroll-type compressor can withstand a large compressive load on the bearing and prevents wear of the mating surfaces. The thrust ball bearing has a first thrust plate,for performing spiral revolution; a second thrust plate,opposing the first thrust plate,; and a retaining device,disposed between the thrust plates,and provided with retaining cavities,for retaining a ball,in each cavity where a radius &rgr; of spiral revolution of the first plate, a diameter d of the ball and a diameter D of the retaining cavity are related by an expression D≧d×&rgr;.