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:
Mar. 16, 1993
Filed:
Dec. 17, 1990
Reinhard Deeg, Keltern, DE;
Alcatel N.V., Amsterdam, NL;
Abstract
Push-button device includes a plurality of movably disposed keys and an elastic switching pad having a plurality of domes. Each dome is disposed adjacent to and is engagable by one of the plurality of keys and a dome contact disposed on each dome. A conductor foil having a plurality of contacts is provided, each conductor foil contact being arranged for contacting one of the dome contacts when one of the keys is moved. A printed circuit board having upper and lower faces is arranged near the contact foil. A spacer member disposed between the upper face of the printed circuit board and the conductor foil defines an electrical component receiving space, and there is a plurality of electrical components located on the upper face in the electrical component receiving space.