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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.:

US 7794208 B1

PDFFull Text
Date of Patent:
Sep. 14, 2010

Filed:

Sep. 29, 2006

Steam turbine rotor, inverted fir-tree turbine blade, low pressure steam turbine with those rotors and blades, and steam turbine power plant with those turbines

Applicants:

Fumiyuki Suzuki, Hitachi, JP;

Kunio Asai, Hitachi, JP;

Takeshi Kudo, Hitachi, JP;

Tateki Nakamura, Hitachi, JP;

Inventors:

Fumiyuki Suzuki, Hitachi, JP;

Kunio Asai, Hitachi, JP;

Takeshi Kudo, Hitachi, JP;

Tateki Nakamura, Hitachi, JP;

Assignee:

Hitachi, Ltd., Tokyo, JP;

Attorney:

Brundidge & Stanger, P.C.

Primary Examiner:

Christopher Verdier

Int. Cl.
CPC ...
F01D 5/30 (2006.01);
U.S. Cl.
CPC ...
Abstract

In a turbine rotor, a rotor radial-direction hook length (Hri) of an i-th rotor hook counting from the outermost circumference of the rotor and a blade radial-direction hook length (Hbi) of an i-th blade hook counting from the outermost circumference of the blade are set to satisfy the relationship of (Hri>Hbi). In the turbine blade, a rotor circumference-direction neck width (Wri) of an i-th rotor neck counting from the outermost circumference of the rotor and a blade circumference-direction neck width (Wbi) of an i-th blade neck counting from the innermost circumference of the blade are set to satisfy the relationship of (Wri>Wbi).

Find Patent Forward Citations

Suzuki, Fumiyuki. (2010). Steam turbine rotor, inverted fir-tree turbine blade, low pressure steam turbine with those rotors and blades, and steam turbine power plant with those turbines (U.S. Patent No. 7794208). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7794208

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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