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:
Apr. 28, 1981
Filed:
Feb. 21, 1978
Applicant:
Inventors:
Richard E Seeger, Topsfield, MA (US);
Vincent Squitieri, Billerica, MA (US);
Assignee:
Chomerics, Inc., Woburn, MA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01B / ;
U.S. Cl.
CPC ...
252503 ; 252511 ; 200265 ;
Abstract
Keyboard having contactors and contacts which are selectively urged against one another by depression causing engagement of one by the other, the keyboard having at least contactors or contacts or both which are constructed of a conductive polymeric composition such that upon engagement of a contactor with a contact there is exhibited substantially reduced bounce after repeated closure of contactor against contact even at micro ampere current levels.