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:
Sep. 06, 1977
Filed:
Sep. 22, 1975
Applicant:
Inventor:
Richard E Seeger, Jr, Topsfield, MA (US);
Assignee:
Chomerics, Inc., Woburn, MA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H01H / ;
U.S. Cl.
CPC ...
200 / ; 2001 / ; 200306 ; 200302 ;
Abstract
Sealed keyboard sandwich having actuator means, a plurality of contactor means, a plurality of contact means and support means therefore, said contacts and contactors forming a plurality of key units, and gas passage means positioned between said actuator means and said support means for selectively permitting the flow of trapped gas from the key units upon depression of a portion thereof. In the preferred structure the sandwich is hermetically sealed from the outside atmosphere.