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:
Sep. 18, 1984
Filed:
Sep. 28, 1982
Klaus D Lamm, Berlin, DE;
Dieter Michalski, Berlin, DE;
ITT Industries, Inc., New York, NY (US);
Abstract
A multiple flat-type switch consisting of three foils of insulating material placed on top of each other and bonded to one another. The center foil is provided with holes and the two outer foils are provided on their insides with contact surfaces which come into contact with one another when a pressure is exerted upon the foil arrangement. For the purpose of achieving a switch having a large overtravel (overlift) the contact surfaces are arranged in one row along the edge of the foil arrangement, while the leads extend almost vertically in relation to the edge of the foil. The foil arrangement is slotted from the edge within the area of the contact surfaces, and arranged on a foam-plastic base. For preventing the metallizations from being damaged, metal-free regions are provided for at the points of pressure attack, and the contact surfaces of the upper foil are connected in a spiral-shaped manner to their respective terminals within the area of the holes of the center foil.