DC electric motor/generator with enhanced permanent magnet flux densities

Patent metadata

Field	Value
Publication number	US-9419483-B2
Application number	US-201313848048-A
Country	US
Kind code	B2
Filing date	Mar 20, 2013
Priority date	Mar 20, 2012
Publication date	Aug 16, 2016
Grant date	Aug 16, 2016

Abstract

This disclosure relates in general to a new and improved electric motor/generator, and in particular to an improved system and method for producing rotary motion from a electro-magnetic motor or generating electrical power from a rotary motion input by concentrating magnetic forces due to electromagnetism or geometric configurations.

First claim

What is claimed is:

1. A system for generating electric voltage or mechanical power, the system comprising:
a longitudinal shaft having a longitudinal axis,
a partial toroidal magnetic cylinder having a center of curvature aligned with the longitudinal axis, the partial toroidal magnetic cylinder including:
a first magnetic longitudinal cylinder portion producing magnetic poles which are generally transversely and radially aligned with respect to the longitudinal axis,
a circumferential slot defined within and through the first magnetic longitudinal cylinder portion,
a second magnetic longitudinal cylinder portion producing magnetic poles which are generally transversely and radially aligned with respect to the longitudinal axis, the second magnetic longitudinal cylinder portion being positioned at a greater radial length from the longitudinal axis than the first magnetic longitudinal cylinder portion,
a first magnetic side ring portion producing magnetic poles which are generally aligned in parallel with the longitudinal axis and positioned adjacent to a first longitudinal end of the first magnetic longitudinal cylinder portion and a first longitudinal end of the second magnetic longitudinal cylinder portion,
a second magnetic side ring portion producing magnetic poles which are generally aligned in parallel with the longitudinal axis and positioned adjacent to a longitudinal opposing end of the first magnetic longitudinal cylinder portion and a longitudinal opposing end of the second magnetic longitudinal cylinder portion,
wherein the magnets poles of the partial toroidal magnetic cylinder are of the same polarity within the partial toroidal magnetic cylinder; a coil assembly including,
a circular core partially positioned radially between the first magnetic longitudinal cylinder portion and the second magnetic longitudinal cylinder portion and longitudinally between the first magnetic ring portion and the second magnetic ring portion,
a conductor wrapped around a portion of the circular core,
a hub coupling the circular core to the longitudinal shaft,
a ring of magnet material coupled to the hub and radially positioned proximal to the circumferential slot to prevent magnetic flux forces from the magnetic poles of the first magnetic longitudinal cylinder, the second magnetic longitudinal cylinder, the first magnetic side ring portion, and the second magnetic side ring portion point from exiting the circumferential slot;

wherein similar or like magnetic poles of the first magnetic longitudinal cylinder, the second magnetic longitudinal cylinder, the first magnetic side ring portion, and the second magnetic side ring portion point towards the circular core, and
a housing sized to accommodate the circular core, the first side ring portion, the second magnetic side ring portion, and the first magnetic longitudinal cylinder and the second magnetic longitudinal cylinder.

2. The system of claim 1 , further comprising at least one slip ring in electrical communication with the conductor to conduct electric current to or from the conductor.

3. The system of claim 1 , further comprising at least two brushes in electrical communication with the conductor to conduct electric current to or from the conductor.

Assignees

• Linear Labs Inc

Inventors

• Hunstable Fred E

Classifications

• H02K16/02 Primary

  Machines with one stator and two {or more} rotors · CPC title

• H02K31/02 Primary

  with solid-contact collectors · CPC title

• H02K1/2766

  having a flux concentration effect · CPC title

• H02K1/17

  Stator cores with permanent magnets · CPC title

• H02K3/04 Primary

  Windings characterised by the conductor shape, form or construction, e.g. with bar conductors · CPC title