GEMINI ELECTRIC MOTOR
The GEMINI electric motor is designed to maximise efficiency by making maximum use of all of the magnetic fields available in the motor casing. This is achieved by the patented process of using both sides of the energised coil. To make this possible, there is an inner and outer ring of magnets, with a central armature comprising 'H' shaped coils, as may be seen below from the photographs and diagrams.
Gemini motor - suitable for solar powered vehicles
The general theory is that permanent magnet (PM) machines are capable of producing higher efficiencies over others such as induction motors and reluctance motors. They can be very robust and produce a large torque for their physical size. The revolutionary feature of the GEMINI motor is that it has the capability of producing more power for the same volume. Theoretically, it is capable of handling twice the power of a same size conventional motor and while doing so, remaining at the high efficiencies that PM motors are capable of. A reduction in size comes with the obvious benefit of material reduction, hence savings in weight and cost. A less obvious advantage is in that a reduction in size opens up markets where space limitations have previously led to the use of costly and inefficient transmission systems. The manufacturing principles of the GEMINI motor are conventional in fashion and would require a minimal retooling cost as compared with other novel motors emerging from the field of research.
The inventor and Managing Director of Ettridge Motors Pty. Ltd and the Gemini Electric Motor Company Pty. Ltd. is John Patrick Ettridge. John holds many patents and has invented a wide range of mechanical products. The Gemini is the result of his interest in providing an energy efficient low cost electric motor for use in transportation.
Inventor - John Patrick Ettridge
The GEMINI may operate on either AC or DC power sources and has the choice of either a carbon brush on a flat copper commutation system which was specially developed for this motor. This original design is ideally suited to an 'in -the-hub' wheel motor for use on a bicycle or in an electric vehicle. The simplicity of the design also makes it extremely suitable in countries and areas where only low tech repairs are available. Alternatively, in applications requiring it, the motor can operate with a high tech electronic commutation system. This type of system is best suited to stationary applications where greater levels of technology are required and are available.
Gemini Motor - Section Plan - Patent extract
The motor design allows for either the shaft or outer housing to turn, depending on the application. We have designed a 7:1 gearing which will be applied to in-hub situations such as electric bicycles / vehicles. This allows the energised rotor in side the motor to revolve at 1400rpm while turning the wheel hub at 200rpm. The gearing on a bike provides a speed control.
Priority Date: 16th April 1998. As a result of the search reports applications filed:
Gemini Motor - Section End - Patent extract
Provisional Patent Applications pending. Other PCT Applications
Gemini Motor - Animation
GEMINI is undergoing extensive R & D and performance testing to
establish exactly how much more power has been obtained from placing magnets
on both sides of the energized coil.
John Patrick Ettridge at the ABC "NEW INVENTORS"
Registered Business Address:
Ph. 61 8 82981698
Fax 61 8 8298 9080
Managing Director e-mail: email@example.com
Sales, e-mail: firstname.lastname@example.org
The Inventors Homepage:
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