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:
Mar. 26, 1996
Filed:
Oct. 19, 1994
William P Sanders, Aurora, CA;
Steam Specialties, Inc., Burnt Hills, NY (US);
Abstract
A segmented seal assembly for retrofitting existing turbine units and the like. In accordance with one aspect of the present invention, the assembly comprises a plurality of semicircular segments disposed between a turbine casing and moving blades of a turbine shaft. Each segment is mounted by threaded fasteners to at least one inner surface of the unit and configured for cooperation with the same. On inner surfaces of the segments are at least two rows of seal teeth, disposed facially with the moving blades. Upon assembly of the segments into a seal ring, fluid flow over the moving blades is limited. Cover band elements layered upon outer surfaces of the moving blades prevent damage to the seal teeth and limit fluid flow over the blades.