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. 01, 2017
Filed:
Apr. 04, 2014
L-3 Communications Cincinnati Electronics Corporation, Mason, OH (US);
Andreas Fiedler, Pasadena, CA (US);
L-3 Communications Cincinnati Electronics Corporation, Mason, OH (US);
Abstract
Self-centering electromagnetic transducers, such as linear motors and generators, are disclosed. In one embodiment, an electromagnetic transducer includes an outer yoke made of a ferromagnetic material, and a coil assembly including a plurality of loops of electrically conductive wire, wherein the coil assembly is substantially surrounded by the outer yoke. The electromagnetic transducer further includes a magnet, and an inner yoke made of ferromagnetic material. The magnet is disposed within the outer yoke such that the coil assembly surrounds the magnet. The inner yoke is disposed within the magnet, and the magnet is free to translate. The electromagnetic transducer further includes at least one high-reluctance zone positioned within the outer yoke and/or the inner yoke. In some embodiments, the electromagnetic transducer includes one or more actuators that vary a width of one or more high-reluctance zones to change a spring rate of the electromagnetic transducer.