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:
Jun. 01, 1999
Filed:
Apr. 02, 1998
Applicant:
Inventors:
Rolf Wecke, Buckeburg, DE;
Heinz Scharlibbe, Hille, DE;
Dirk Dreyer, Stadthagen, DE;
Joachim Ulfik, Vlotho-Exter, DE;
Assignee:
Hans Bernstein Spezialfabrik fur Schaltkontakte, Porta Westfalica, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01F / ; H01F / ; H01F / ;
U.S. Cl.
CPC ...
335267 ; 335177 ; 335178 ; 335259 ;
Abstract
A safety switch includes a spring-biased locking pin which is displaceable axially inside a switch housing by a lifting magnet against the biasing force of the spring to switch a switching element between a blocking position and a release position, and a retention magnet which holds the locking pin in the release position when the lifting magnet is de-energized.