Title: Noise suppression pushbutton interlocked switch assembly

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.

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Other info:

Inventors: Schadow, Rudolf (Berlin, DE, US)

Application Number: 823846
Filing Date: 1977-08-11
Publication_date: 1979-05-01
Assignee: ITT Industries, Inc. (New York, NY)
Primary Class(es): 200/5B 200/5E, 200/238, 200/275, 200/283
Other Classes:
US Patent Ref:

3646283	Feb, 1972	Hansen	200/153.
3739110	Jun, 1973	Constable	200/5.
3882056	May, 1975	Nakasone	200/1.
4010382	Mar, 1977	Nishioka et al.	200/5.
4095059	Jun, 1978	Nishioka et al.	200/5.

Other Refs:
Primary Examiner: Scott, James R.
Assistant Examiner:
Attorney: Raden; James B., Michals; William J.