Abstract: Processing of materials and their combination to produce a thin foil-laminated adhesive dielectric thermosetting resin film and the conversion of it by a mechanical debossing procedure to impart a debossed and/or embossed printed circuit pattern directly thereon. A process for compositing a shaped metal foil containing a debossed electrical circuitry pattern and an thin isotropic uncured and ungelled thermosetting resin film and forming an adhesively joined composite conforming essentially to the shape of the predebossed metal foil. The process comprises placing a shaping tool with a surface possessing an embossed electrical circuitry pattern, as described in the prior art, and forcing the shaped surface and a surface of the metal foil into intimate contact to deform the metal foil to assume essentially the shape of the tool surface. The shaped metal foil is separated from contact with the tool surface.
Abstract: A hybrid alternator includes a stator and a rotor, with the rotor having longitudinally separate wound field and permanent magnet rotor portions. A rotor excitation circuit applies a forward polarity to the wound field rotor portion to increase output in a boosting mode at low RPMs and a reverse polarity to decrease output at high RPMs in a bucking mode to maintain a constant voltage output. Alternative embodiments combine a magnetic flux concentrating design for efficient low speed operation with integral strength for high speed capability. Dual voltage output is provided either through dual stator windings or through a voltage converter circuit. Single voltage output is provided using only one stator winding. A three state voltage regulator allows voltage regulation without inducing reverse currents onto the power bus in the lightly loaded or no battery conditions.
Type:
Grant
Filed:
June 2, 1995
Date of Patent:
January 20, 1998
Assignee:
Ecoair Corp.
Inventors:
Charles D. Syverson, William P. Curtiss
Abstract: An electric motor is suitable for use in, for example, a home appliance, such as a refrigerator/freezer, to drive a fan blade. The electric motor includes a permanent magnet rotor and an excited two part laminated stator. The two parts of the stator are adapted to be connected together about the rotor with the axis of the rotor in the plane of the laminations. The rotor has two axially separated pole regions and the stator is configured to provide a separate rotor receiving pole pair for each rotor pole region. Each stator pole pair provides a rotor receiving space within which respective rotor pole regions are disposed, wherein the stator is made up of separate laminations of ferromagnetic material and adjacent laminations are displaced relative to each other in the plane of the laminations in directions perpendicular to the rotor axis such that the stator poles are each formed by a pair of semi-circular shaped poles to provide the rotor receiving spaces.