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:
Dec. 30, 1980
Filed:
Oct. 15, 1979
Applicant:
Inventors:
Ronald D Baxter, Furlong, PA (US);
Paul J Freud, Furlong, PA (US);
Assignee:
Leeds & Northrup Company, North Wales, PA (US);
Primary Examiner:
Int. Cl.
CPC ...
H01C / ; G01K / ;
U.S. Cl.
CPC ...
338 28 ; 733628 ;
Abstract
A resistance thermometer probe assembly is constructed by locating a header assembly in the end of a cylindrical sleeve. The header is constructed as a stack of discs. The disc exposed to the environment is of stainless steel and the disc supporting the thin film resistance thermometer chip is of ceramic. A copper disc is brazed between the ceramic and the stainless steel to accommodate the different thermal coefficients of expansion. Nail-head pins are brazed to a thick film deposit on the exposed face of the ceramic disc and the resistance thermometer chip is connected electrically between the pins.