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:
Mar. 27, 2007
Filed:
Jul. 13, 2005
Masataka Sakata, Hino, JP;
Tomohiro Chaki, Tachikawa, JP;
Masaru Okazaki, Hino, JP;
Yuji Kusaka, Akishima, JP;
Shiro Umegaki, Akishima, JP;
Atsushi Hamanaka, Akiruno, JP;
Masahiro Nonoguchi, Hamura, JP;
Masataka Sakata, Hino, JP;
Tomohiro Chaki, Tachikawa, JP;
Masaru Okazaki, Hino, JP;
Yuji Kusaka, Akishima, JP;
Shiro Umegaki, Akishima, JP;
Atsushi Hamanaka, Akiruno, JP;
Masahiro Nonoguchi, Hamura, JP;
Rigaku Corporation, Tokyo, JP;
Abstract
A coolant passage is formed inside the rotary shaft while an air passage is formed inside the casing. A mechanical seal is arranged between the coolant passage and the air passage. Leakage cooling water, which has leaked in the form of vapor from the mechanical seal, is relegated radially outwardly along with air by the action of a rotary vane, which is disposed in the air passage, and finally flows out of an air outlet. A coolant sensor may be provided to early detect the leakage water.