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:
Feb. 12, 2008
Filed:
Apr. 08, 2005
Kou Sugano, Osaka, JP;
Kou Sugano, Osaka, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
In an exhaust pipe, a rotating shaft takeoff connection is provided so as to support a rotating shaft for rotating a switching valve fixed thereon. The rotating shaft extends to the outside of the exhaust pipe and is provided with an introduction hole and branch holes in such a manner that the introduction hole and the branch holes are communicated with each other to form through holes extending from the outside to the inside of the exhaust pipe. Into a gap between the rotating shaft takeoff connection and the rotating shaft, purge gas is introduced via the introduction hole and the branch holes. Furthermore, pure water is introduced into the gap via the introduction hole and the branch holes. By utilizing the purge gas, exhaust gas within the exhaust pipe is prevented from leaking outside the pipe and by utilizing the pure water, accumulated solid substance are prevented from adhering to the related parts of the pipe.