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:
Jan. 19, 1982
Filed:
Nov. 08, 1978
Dennis E Barbeau, Liberty Center, OH (US);
Teledyne Industries, Inc., Los Angeles, CA (US);
Abstract
A turbine engine construction of the type having a support housing, a compressor and at least one turbine stage rotatably mounted in the support housing, said turbine stage having an annular rotating shroud secured around its outer periphery while a static shroud is connected to the support housing coaxially around and spaced radially outwardly from the rotating shroud thus defining a clearance space between the two shrouds. The novelty of the invention resides in a system for cooling both the static and rotating shrouds and for also simultaneously substantially reducing or eliminating the leakage of hot gases through the clearance space between the shrouds. In the preferred form of the invention, this system comprises a plurality of circumferentially spaced ports formed through the housing and/or static shroud. Each port has one end open to the compressed air outlet from the compressor and its other end open to the clearance space between the shrouds. The ports are of a number and dimension sufficient to create a cold air barrier in the clearance space.