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. 23, 1982
Filed:
Aug. 14, 1980
Applicant:
Inventor:
Thomas Vranas, Hampton, VA (US);
Primary Examiner:
Int. Cl.
CPC ...
H01C / ;
U.S. Cl.
CPC ...
338 25 ; 29613 ; 338275 ; 338 28 ;
Abstract
An improved hot wire transducer skin friction sensor 10 and 19. The device utilizes foil transducers 11 and 18 with only one edge exposed to the fluid flow. The surface 28 and 31 are polished producing a foil transducer 11 and 18 that does not generate turbulence while sufficiently thick to carry the required electrical current for high temperature fluid flow. The assembly utilized a precut layered metal sandwich 20 with attached electrodes eliminating a need for welding and individual sensor calibration.