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 7845076 B1

PDF
Full Text
Expired
Date of Patent:
Dec. 07, 2010

Filed:

Apr. 21, 2008
Applicants:

Alexander Gabriel Beckford, Glenville, NY (US);

Madhu Bharadwaj, Karnataka, IN;

John Peter Hoffman, St. Francis, MN (US);

Inventors:

Alexander Gabriel Beckford, Glenville, NY (US);

Madhu Bharadwaj, Karnataka, IN;

John Peter Hoffman, St. Francis, MN (US);

Assignee:

General Electric Company, Schenectady, NY (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21K 3/04 (2006.01);
U.S. Cl.
CPC ...
Abstract

Re-machining a generator rotor tooth dovetail results in a transition zone at an end of the partial re-machined cut, between a newly cut load surface and an original load surface of the rotor tooth. The transition zone is susceptible to stresses that may adversely affect the fatigue strength of the rotor tooth. These stresses can be reduced by the steps of (a) forming at least one axial undercut stress relief groove across the transition zone between the newly cut load surface and the original load surface, (b) cutting and shaping a wedge that will fit in the transition zone, and (c) securing the wedge across the transition zone.


Find Patent Forward Citations

Beckford, Alexander. (2010). Method for reducing stresses resulting from partial slot dovetail re-machining for generator rotor (U.S. Patent No. 7845076). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7845076

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