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:
Aug. 24, 1982
Filed:
Aug. 01, 1980
Sydney C Woolcock, Wells, GB;
Edwin G Brown, Bath, GB;
EMI Limited, Hayes, GB;
Abstract
In order to monitor the clearance between turbine blades and the casing of a turbine engine millimetric microwave radiation of wavelength .lambda. is propagated along a waveguide and through an aperture to a turbine blade. The aperture is small in relation to the area of the blade facing the aperture, and the aperture has a spacing of .lambda./4 or less from the blade. A balanced mixer compares the phase of the wave reflected from the blade with a reference pulse to provide a measure of the clearance. Circuits may be provided for monitoring the spacings between blades, and to indicate blades which are damaged.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile