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. 29, 1991
Filed:
Dec. 19, 1990
Gunter Buttner, Nuremberg, DE;
Friedrich Forschner, Nuremberg, DE;
Manfred Fuchtenkort, Allersberg, DE;
Rudolf Schmeykal, Hemhofen, DE;
Alfred Wieland, Ditzingen, DE;
Ta Triumph-Alder AG, Nuremberg, DE;
Abstract
In a keyboard for typewriters, printers or the like, where a contact bearing film is disposed underneath the keys, there is provided for achieving a cost-efficient arrangement, while avoiding the use of separate restoring springs, that the contact bearing film (10) has U-shaped cut-outs (11) in the area of the keys (1), the film tongues (12) are bent by 180.degree. and are acted upon by the key tappet (3) of the keys (1), the contacts (14, 15) formed between the base of the film, the underside of the film tongue (12), and the film tongue (12) act at the same time as a restoring spring.