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. 10, 1978
Filed:
Jun. 30, 1977
Johannes H Hilderink, Buurse, NL;
Hazemeijer B.V., Buurse, NL;
Abstract
A spring-drive mechanism for controlling the switch-on and switch-off positions of contacts of an electric switch wherein the conventional lever system for relaying the rotating force from the helical spring to the contacts is replaced by a structure which includes a fixed hollow cylinder in which a movable coupling shaft is located, the hollow cylinder having axially staggered wall bores in which balls are positioned, the configuration and positioning of the coupling shaft within the hollow cylinder determining whether one or the other of the balls is positioned to extend outwardly of the outer surface of the cylinder. The hollow cylinder is positioned with one end of a hollow shaft which coaxially encompasses a drive shaft and helical spring combination, the structure including interconnecting projections to provide for selective rotational interengagements between the hollow shaft and the drive shaft.