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:
Oct. 04, 1983
Filed:
Feb. 16, 1982
Andrew Voge, Arcadia, CA (US);
Daniel R Sparks, Temple City, CA (US);
Barry W Mullins, Glendora, CA (US);
Becton Dickinson and Company, Paramus, NJ (US);
Abstract
A capacitance keyboard switch is provided which is of substantially reduced vertical dimensions for reducing in a keyboard the overall space requirements therefore. The switch of the invention has an overall height of only 0.750 inches (19.05 mm), and a length of travel of as much as 0.150 inches (3.81 mm). This is achieved by eliminating a housing for the switch altogether, utilizing a cooperating plunger-snap-in guide combination, and a single sheet movable capacitor plate which cooperates with a plate on the printed circuit board. In addition, the entire assembly is mounted and supported on the printed circuit board with the components snapped together without the use of separate hardware, such as screws or nuts.