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. 01, 1979
Filed:
Aug. 11, 1977
Applicant:
Inventor:
Rudolf Schadow, Berlin, DE;
Assignee:
ITT Industries, Inc., New York, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H01H / ; H01H / ;
U.S. Cl.
CPC ...
200 / ; 200 / ; 200238 ; 200275 ; 200283 ;
Abstract
The noise suppression contact of a keyboard with a row of pushbutton-operated slide switches consists of a flat U-shaped contact spring forming a double armed lever one arm of which is actuated by the stop slider and the other contacting a fixed contact. The pushbutton operators are mutually interlocked by the stop slides. The noise suppression contact assembly is activated momentarily during the change over from one desired switching mode of operation to another switching mode of operation thereby preventing disturbing 'clicks' caused by the shorting of an amplifier input.