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:
Jun. 26, 2001
Filed:
Nov. 25, 1998
Osman Saim Dinc, Troy, NY (US);
Norman Arnold Turnquist, Cobleskill, NY (US);
Robert Harold Cromer, Johnstown, NY (US);
George Ernest Reluzco, Schenectady, NY (US);
Christopher Edward Wolfe, Niskayuna, NY (US);
General Electric Co., Schenectady, NY (US);
Abstract
Circumferentially extending sealing segments (,) are disposed about a rotary component (,) and have seal face (,) carrying a plurality of labyrinth seal teeth (,) and a brush seal (,). The segments are movable between large and small clearance positions relative to the rotor at start-up and steady-state operating conditions, respectively. In one form, springs (,) bias the segments radially outwardly at start-up and steam pressure displaces the segments to the small clearance positions at steady-state operations. In a further embodiment, springs bias the segment for movement to the small clearance position, the extent of movement being determined by thermal expansion of centering rings mounting the segments to the stationary components.