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:
Oct. 19, 1976
Filed:
Mar. 03, 1975
Ronald E Warner, Media, PA (US);
Westinghouse Electric Corporation, Pittsburgh, PA (US);
Abstract
A vibration, damper, or snubber device is disposed on the radially outward surface of a shroud member mounted on a turbine rotor. The rotor has an annular array of twisted blades connected together to form blade groups by a first and a second shroud member. The vibration damper, or snubber, is mounted on the first shroud member and extends therefrom across a gap between the shroud members to circumferentially overlap a portion of the second shroud member. A predetermined axial gap is defined between a portion of the second shroud and the snubber. When an untwist motion is imposed upon the blades due to rotation of the rotor, the axial gap closes and an abutment between the snubber and the second shroud occurs to inhibit further untwist motion and to simultaneously provide a friction interface to inhibit circumferential motion between the second shroud and the vibration damper.