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. 23, 1982
Filed:
Sep. 27, 1979
Applicant:
Inventors:
Michel R Ayache, Epinay sous Senart, FR;
Pierre A Glowacki, Melun, FR;
Gerard M Mandet, Epinay sous Senart, FR;
Assignee:
Primary Examiner:
Int. Cl.
CPC ...
F01D / ; F16J / ;
U.S. Cl.
CPC ...
277 22 ; 277 53 ; 415110 ; 415174 ; 415176 ; 415178 ; 415180 ;
Abstract
A labyrinth seal mounted between a shaft and the casing of a gas turbine combustion chamber, wherein the support of an abradable sealing surface in the seal which operates in conjunction with rapidly rotating fins is cooled by an upstream airflow parallel to the envelope surface of the extremities of such fins and opening into an upstream space. The cooling air is taken in from the casing by means of a conduit which is connected with an overflow valve tied to the gas turbine load. The invention is applicable to aviation turbojets.