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:
Mar. 09, 2004
Filed:
Sep. 12, 2002
James A. Mason, Las Vegas, NV (US);
Other;
Abstract
A mechanical ball coupling or clutch comprises a plurality of magnetizable balls located between inner and outer concentric caged needle rollers without raceways. The caged needle rollers are concentric with the axis of a hollow non-magnetic rotatable shaft which carries therewithin an actuateable electromagnet. Substantially surrounding the caged needle rollers and balls to form chambers therefor is a rotatable concentric shell of a non-magnetic material. Upon actuation of the electromagnet, the balls and needle rollers magnetically nest together to form a torque transmitting condition between the hollow shaft and the shell. A third set of needle rollers mounted in the wall of the hollow shaft allow the electromagnet to float in a non-rotating condition within the rotating hollow shaft.