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:
Dec. 29, 1987
Filed:
Mar. 13, 1986
Applicant:
Inventors:
William F McGreehan, Fairfield, OH (US);
Laurence T Sherwood, Cincinnati, OH (US);
Assignee:
General Electric Company, Cincinnati, OH (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01M / ;
U.S. Cl.
CPC ...
73 407 ; 277-2 ;
Abstract
A method and apparatus for measuring the leakage flow rate through a labyrinth seal is disclosed. This is achieved by first injecting a tracer gas through a spray tube at an upstream region of the seal. The tracer gas mixes with the gas stream to form a mixed flow stream. The concentration of the tracer gas in the mixed flow stream is then measured, allowing the leakage flow rate to be calculated.