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:
May. 27, 2008
Filed:
May. 08, 2007
Applicant:
John Fedorjaka, Apex, NC (US);
Inventor:
John Fedorjaka, Apex, NC (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01H 1/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
A metal dome switch assembly with a good snap ratio and having a desired click characteristic near to that of an isolated metal dome includes a carrier base layer and adhesive layer which have a plurality of holes bounded by annular sections which engage the lower outer surfaces of the domes and are larger than the keypad actuation posts, at positions corresponding to fixed contact points on a circuit board. The switch array is especially important in cell phone designs where the snap ratio, tactile feel, is desirable. The switch array can also incorporate an electroluminescent (EL) lamp while still improving the snap ratio.