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:
Jan. 11, 1977
Filed:
Sep. 25, 1975
Applicant:
Inventors:
Charles D Branson, Greensburg, PA (US);
William D Long, Jr, Greensburg, PA (US);
Assignee:
Robertshaw Controls Company, Richmond, VA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01C / ;
U.S. Cl.
CPC ...
338326 ; 219270 ; 338329 ; 338332 ; 3392 / ;
Abstract
A sleeve of in-situ-solidified-from-melt material, such as a lead glass or the like, surrounds an end segment of a refractory resistance element extending from a junction between a metal supporting member and the end of the element. The solidified-from-melt material is formed not to adversely react with the refractory element and has a coefficient of linear expansion within the range from about 0.5 to 1.5 times the coefficient of linear expansion of the refractory material.