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. 14, 1984
Filed:
Nov. 19, 1981
Applicant:
Inventor:
George H Rodriguez, Williamstown, MA (US);
Assignee:
Sprague Electric Company, North Adams, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01C / ;
U.S. Cl.
CPC ...
338220 ; 174 / ; 338 / ; 338309 ; 338327 ; 338316 ; 219541 ;
Abstract
A ceramic PTCR slug has glass-bonded-aluminum layers bonded to the major opposite surfaces. Patches of silver film are bonded to selected regions of the glass-aluminum layers and stainless steel contacts are spring loaded against the silver patches. The stainless steel contacts provide good thermal isolation to the slug. The low cost contacts are complemented by the minumum use of silver in the electrode. The package provides long life under relatively heavy duty service.