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:
Dec. 08, 1981
Filed:
Oct. 29, 1979
Patrick M Taiani, Halifax, CA;
Nova Scotia Research Foundation Corporation, Nova Scotia, CA;
Abstract
A torque transmitting assembly for effecting rotation of a valve member such as a butterfly valve is hermetically sealed to the valve housing. It includes a rotor member having a plurality of circumferentially spaced permanent magnets of opposite polarity and a driver magnet assembly having a like plurality of circumferentially spaced permanent magnets of opposite polarity facing the magnets mounted to the rotor. The two sets of magnets are separated by a stainless steel separator which hermetically seals the rotor. The driver magnet assembly is rotatable about the separator so that magnetic coupling forces effect a following rotation of the rotor and hence of the valve member. A magnetic indicator may be used to identify the rotational position of the rotor. The entire assembly is hermetically sealed and no packing is required. The assembly is especially useful to control a valve in a hazardous environment wherein no leakage of the fluid being controlled by the valve member is permissible.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile