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:
Jun. 05, 2007
Filed:
May. 19, 2004
Takashi Nakano, Takasago, JP;
Hirokazu Shirai, Takasago, JP;
Toshio Asada, Takasago, JP;
Shin Nishimoto, Takasago, JP;
Tanehiro Shinohara, Takasago, JP;
Hidekazu Uehara, Takasago, JP;
Takashi Nakano, Takasago, JP;
Hirokazu Shirai, Takasago, JP;
Toshio Asada, Takasago, JP;
Shin Nishimoto, Takasago, JP;
Tanehiro Shinohara, Takasago, JP;
Hidekazu Uehara, Takasago, JP;
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Abstract
A shaft seal mechanism (leaf seal) by which a desired seal performance can be stably obtained is provided. The shaft seal mechanism comprises a concave grooveformed larger than a minimum size of a plate width of thin platesand a fitting piecefitted in a gap between the concave grooveand a leaf seal. The leaf sealcomprises an annular thin plate assemblyA constructed by the thin platesand a plate springintegrally formed therewith supporting the annular thin plate assemblyA to be levitated coaxially with a rotating shaft. The thin plateshave their outer circumferential proximal end side made movable relative to the concave groove. A shaft seal mechanism assembling structure is also provided comprising a pressure receiving surfaceand a lower pressure side plateforming a predetermined gap size between the pressure receiving surfaceand one side edges of the thin plates