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:
Feb. 10, 1987
Filed:
Jun. 10, 1985
Walter E Hinds, Beverly Hills, CA (US);
Northern Magnetics, Inc., Van Nuys, CA (US);
Abstract
A bidirectional DC motor having a rotatable permanent magnet rotor structure within a ring core bearing helical windings is arranged to provide smoothly continuous torque over very wide excursion angles, which may be continuous if desired. Signals as to actual angular position of the rotor are utilized to generate timing signals for switching a driving current in proper polarity between different windings such that the extent and force of interaction fields remain substantially constant. The windings occupy different arc segments on the ring core and are energized such that all rotor tip regions are uniformly acted upon as the rotor moves from one arc segment to another.