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. 06, 1981
Filed:
Feb. 05, 1979
Applicant:
Inventors:
Assignee:
Northern Telecom Limited, Montreal, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04M / ; H01H / ;
U.S. Cl.
CPC ...
179 / ; 3403 / ; 361397 ; 361411 ;
Abstract
A pushbutton switch assembly has at least one of the conventional PCB's replaced by a porcelain coated steel plate. The contact circuit for the pushbutton switches is formed on the top surface of the steel plate. It is also possible to replace both PCB's of a conventional switch by forming a second circuit on the under surface of the steel plate, with the electrical devices mounted thereon. Use of the steel plate enables the normal metal mounting plate to be omitted.