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. 17, 1993
Filed:
Apr. 29, 1991
Gary S Van Heusden, Oviedo, FL (US);
Thomas A Brown, Winter Springs, FL (US);
Lloyd W Smith, Charlotte, NC (US);
Ralph R Barber, Waxhaw, NC (US);
Robert M Lloyd, Charlotte, NC (US);
Phillip R Ratliff, Weddington, NC (US);
Wilmott G Brown, Winter Park, FL (US);
Albert F Le Breton, Longwood, FL (US);
David A Lutz, Fayetteville, NC (US);
Westinghouse Electric Corp., Pittsburgh, PA (US);
Abstract
A turbine blade assembly composed of a rotor which is rotatable about a turbine axis of rotation and a plurality of turbine blades supported by the rotor, each blade having a root and the rotor being provided with a groove shaped for holding each root in a manner such that the root and groove have mutually contacting surfaces which apply a radially inwardly directed restraining force to the root, the root further having a bottom facing the turbine axis and the groove having a base which is located radially inwardly of, and faces, the root bottom. The mutually contacting surfaces of the root and the groove are pressed together by means of at least one disc spring compressed between the root bottom and the groove base.