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:
Aug. 19, 2003
Filed:
Jul. 12, 2002
Todd Joseph Fischer, Ballston Spa, NY (US);
Jeffrey Philip Fregoe, Churchville, NY (US);
David Ward Marcellus, Jr., Webster, NY (US);
Dennis W. Roberts, Schenectady, NY (US);
John Francis VanNest, Schenectady, NY (US);
General Electric Company, Schenectady, NY (US);
Abstract
An automatic machine for peening the tenons on bucket cover plates to secure the cover plates and adjacent buckets of a turbine wheel to one another is provided. The machine includes a fixture having stepped surfaces for locating the freely suspended fixture and peening tool relative to the bucket tips and cover plates and clamping the tips and cover plates to the fixture surfaces. After peening a first tenon, the fixture and tool head are displaced relative to the fixed cover plate and bucket tip to register the tool with a second tenon. An actuator displaces the suspended system to compensate for the movement of the fixture and tool relative to the turbine wheel. A counterbalance is provided to accommodate fixtures of different weights when peening the tenons of covers in different turbine wheels.