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:
May. 08, 1990
Filed:
Jun. 13, 1988
Applicant:
Inventors:
Paul F Rozelle, Fern Park, FL (US);
Karl C Koch, Swissvale, PA (US);
Charles W Einolf, Jr, Murrysville, PA (US);
Robert M Oates, Murrysville, PA (US);
Assignee:
Westinghouse Electric Corp., Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01H / ; G01M / ; G01P / ; H03K / ;
U.S. Cl.
CPC ...
73660 ; 73661 ; 307354 ; 307358 ; 307510 ; 307515 ; 324173 ; 32420713 ; 32420722 ; 328110 ; 328165 ; 416 61 ;
Abstract
An apparatus for detecting blade passing times includes a sensor for producing an input signal each time a blade passes the sensor. A zero crossing detector produces an output signal each time the input signal crosses a reference axis. A phase shifter shifts the phase of the input signal to produce a gating signal coinciding with the expected arrival time of the blade at the sensor. A gating device is responsive to the gating signal for conducting output signals which occur during the expected arrival time of the blade at the sensor.