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. 09, 1989
Filed:
Sep. 16, 1988
Applicant:
Inventors:
Richard E Riley, Riverside, CA (US);
Kenneth Brown, Alta Loma, CA (US);
Assignee:
Hamilton Standard Controls, Inc., Farmington, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01F / ;
U.S. Cl.
CPC ...
73313 ; 7330 / ; 73319 ; 338 33 ; 200 / ; 340624 ;
Abstract
A fuel level sensor 16 comprises a vertical member 20 and float 22 wherein said vertical member 20 comprises a steel substrate 26 encased in porcelain 28 with a thick film cermet resistive track 34 deposited thereon. A nickel deposit 36 at the bottom portion of the vertical member 20 facilitates electrical continuity between the substrate 26 and the resistive track 34 such that the substrate acts as a buried conductor enabling proportionality between magnitude of resistance and liquid level while diminishing the likelihood of conductor erosion and float interference.