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. 13, 1993
Filed:
May. 18, 1992
Klaus Durst, Bruchsal, DE;
Nokia (Deutschland) GmbH, , DE;
Abstract
For the purpose of forming a base bearing position (4), the inside of the bottom portion (10) of the ball-guiding socket housing (1) of a ball-and-socket switch, where this bottom portion defines a base plane, is provided with a pyramid-shaped recess (8) as the base bearing position of the switching ball (3) in a (horizontal) normal (or rest) position of the ball-and-socket switch. The base bearing position is formed by a circular recess in the area of the vertex (9) of the pyramid and defines a particular tilting angle (a) of the switching ball. The light transmission elements (16) and the light reception elements are arranged in light-tight chambers behind the side walls (14) of the internal space (6) of the socket housing, these chambers, for the purposes of light transmission, being connected to the internal space by means of apertures (20) in the side walls (14) terminating in rotation-symmetric recesses that narrow in the direction of the chambers. The recesses are shaped in such a way that, whenever a given inclination position is reached, they will come to form together with the switching ball then bearing against the inner face (28) of the recess, a closed and light-tight channel.