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:
Dec. 05, 1978
Filed:
Feb. 22, 1977
Applicant:
Inventor:
Richard E Seeger, Topsfield, MA (US);
Assignee:
Chomerics, Inc., Woburn, MA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H01H / ;
U.S. Cl.
CPC ...
200 / ; 2001 / ; 200292 ;
Abstract
Keyboard device having a top flexible plastic contactor sheet with a first circuit pattern thereon, said first pattern comprising contactors and circuit lines, a bottom sheet having a second circuit pattern comprising contacts and circuit lines, an insulator spacer having openings in register with said contactors, said sheet having formed therein one or a plurality of protrusions or domes which support a portion of the first circuit pattern, and means for continuously urging the one or plurality of protrusions or domes supporting a portion of said first circuit pattern against a portion of said second circuit pattern.