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. 24, 2000
Filed:
Jun. 24, 1998
Shigeki Miura, Nishi-kasugai-gun, JP;
Kimiharu Takeda, Nishi-kasugai-gun, JP;
Kazuhide Watanabe, Nishi-kasugai-gun, JP;
Takeshi Hirano, Nishi-kasugai-gun, JP;
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Abstract
A scroll hydraulic machine comprising a housing having a key groove, a fixed scroll disposed in said housing, a swirling scroll having a key groove disposed in said housing, engaging with said fixed scroll, and moving in a swirling motion, and an Oldham ring provided with a swirling key engaging, in a freely sliding manner, with said key groove formed on said swirling scroll, and a fixed key engaging, in a freely sliding manner, with the key groove formed on said housing, and Sn plated on at least one side surface of the swirling key and the fixed key.