Open-Sided-Coil Linear Induction Motors & Self-Assembling Magnetic Core Fabrication

Product of Terreplane Technologies, LLC

InnoTrans 2018

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4 Bingham
Columbia, MO 65203
United States of America

InnoTrans 2018

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Product description

PRODUCT
Linear Induction Motors (LIM) provide non-contact propulsion on over a dozen train systems worldwide. Now they can be made:
  • Lower-Cost,
  • Lighter-Weight,
  • In More-Complex Configurations, and
  • With Greater Capabilities.
The Open-Sided LIM (below) is designed to replace a multiple-ton train chassis (including electric motors) with a 100 mm diameter cylinder-shaped LIM that weighs less than 200 kg.

This product offering includes devices and manufacturing methods early in their patent life. Please visit the booth or web site (terretrans.com) for more information.

PERFORMANCE
Open-Side LIM (motors)
The Open-Sided Linear Induction Motor (LIM) transforms a cable into a high performance transportation guideway. Applications range from conveyers (elevator/lift or assembly line) to inter-city transit. Magnetic forces both center the cable in the cylinder-shaped LIM and provide propulsion without contact and without the wear/tear/maintenance associated with contact. A slot (hence the name, open-sided) along the side of the cylinder allows the connectors that connect the zipline-type guideway (the armature) to pass without hitting the LIM stator/chassis.

Self-Assembling Core (manufacturing method)
Self-Assembling Core manufacturing is a method where electromagnet cores self-assemble to produce lighter-weight and more-complex complex motors at a fraction of the costs of alternatives. The steps of the basic manufacturing method include:
  1. Prepare a mold of the electromagnet device (such as the casing and stator of a motor).
  2. Insert the electromagnet coils into the mold.
  3. Inject a thermosetting ferromagnetic [particle] mixture into the mold.
  4. Apply a magnetic field to the coils to assemble the ferromagnetic particles into the optimal density profile based on the particle loading.
  5. Enhance the mixture and self-assembly process before it sets.
This method is able to:
  • mold the core around the electromagnet coils, reducing gaps in the core and improving performance;
  • mold the motor housing/casing and electromagnet cores [around the coils] in a single step and as a single body;
  • allow complex electromechanical components to be manufactured from 3D prints/molds/dies in a manner that is custom, low-volume, and lower cost than high-volume stamping-production methods.
PATENT POSITIONS
Three patents incorporate multiple claims on this technology.
  • PCT/US15/07799, Terreplane Transportation System, published.
  • PCT/US17/61003, Glider Transportation System, published.
  • Provisional USXXX, Electric Motor Related Inventions (anticipated publication, May 2019).
The basic defining of the open-sided coil dates to the 2015 PCT application. The 3-phase LIM chassis (capable of replacing a multiple-ton railcar chassis) dates to the 2017 PCT application. The self-assembly core manufacturing methods are still only in the provisional patent application stage with PCT filing to be in late 2018.