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:
Feb. 07, 1995
Filed:
Jan. 26, 1994
Applicant:
Inventors:
John F Thurston, Mesa, AZ (US);
Ernest W Cassaday, Apache Junction, AZ (US);
George W Carrie, Scottsdale, AZ (US);
Assignee:
AlliedSignal Inc., Morris Township, Morris County, NJ (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01B / ;
U.S. Cl.
CPC ...
73 375 ;
Abstract
Fluidic proximity sensing apparatus for use with a linear induction motor car. The apparatus is comprised of a floating sensor head in operative combination with a dual flapper valve which forms two air gaps. A change in the proximity of the sensor head to a track surface is converted to a dimensional variation in the air gaps, which in turn is sensed by fluidic oscillators.