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:
Apr. 29, 1980
Filed:
May. 19, 1978
Michele Bovio, Banchette, IT;
Pietro Castellano, Castellamonte, IT;
Ing. C. Olivetti & C., S.p.A., Ivrea, IT;
Abstract
A keyboard comprises a plurality of keys which, when depressed, elastically deform conductive laminae which thereby go with a snap action from a stable configuration to an unstable configuration to complete an electrical circuit associated thereto. Each lamina has the form of two mutually transverse pairs of parallel edge strips spanned by a diagonal strip and the edge strips have permanent bends set into them such that the diagonal strip is bowed in the stable configuration towards the corresponding key. A fixed contact on the lamina is located adjacent one end of the diagonal strip and a movable contact is located in the central region of the diagonal strip. A single key actuates two identical laminae, one through an actuator resiliently coupled to the key and the other through an actuator fixed to the key.