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:
Jun. 02, 1998
Filed:
Apr. 18, 1996
Applicant:
Inventor:
Ching-Cheng Tsai, Keelung, TW;
Assignee:
Chicony Electronics Co., Ltd., Taipei Hsien, TW;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01H / ; H01H / ;
U.S. Cl.
CPC ...
200 / ; 200512 ;
Abstract
A rubber cone layer for use in a computer keyboard, having fine grains distributed over the top and bottom sides thereof to prevent sticking to the membrane circuit of the computer keyboard, and a plurality of rubber cones raised from the top side corresponding to the key switches of the computer keyboard for compression by the key switches to trigger respective contact points at the membrane circuit, each of the rubber cones having a downward plunger terminating in a conductive element and spaced above one contact point of the membrane circuit.