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:
Jan. 31, 1984
Filed:
Jul. 15, 1982
David C Tedd, Folkestone, GB;
Kenneth Gatland, Walmer, GB;
Thorn EMI Instruments Limited, Dover, GB;
Abstract
A switch actuator mechanism including a slider which can execute movement in steps along a linear track, the step-wise movement being governed by the interaction of a pair of cam-followers, carried by the slider, with respective cam-surfaces disposed alongside the track, one to either side thereof. The cam-followers are resiliently urged into contact with their respective cam surfaces and permit the slider to assume, alternately, stable and unstable conditions at locations disposed in series along the track. Beyond one of the extreme positions at which the stable condition is assumed, the cam surfaces are formed with respective inwardly inclined, linear surface portions along which the respective cam-followers can run while being urged against the resilient force, thereby permitting the slider to travel beyond the extreme stable position to enable a switch means to be actuated by the slider, or some attachment thereto, the slider being restored to the aforesaid extreme stable position, after such actuation, by the resilient force applied to the cam-followers.