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:
Aug. 13, 1985
Filed:
Aug. 18, 1983
Heinrich Dettmann, Niedernhall, DE;
Burkert GmbH, , US;
Abstract
A magnetically operated valve having a permanent magnet with constant remanence wherein the permanent magnet is formed with an annular configuration and is located in one end of a tubular core guide member which operates to guide a movable core member forming the valve body. The permanent magnet is produced from a rare earth/cobalt alloy and secures the valve in at least one of a plurality of switched positions and a ferromagnetic circuit is formed with sheet metal sheets extending to form the outer portion of the ferromagnetic circuit with the movable core member forming the inner part thereof. The permanent magnet is inserted in cutout portions of the sheet metal sheets which form the outer part of the ferromagnetic circuit.