THE PEOPLE

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. His first motor invention was the Orbital Engine in 1969, then the Wet Sump two stroke engine. The Gemini Electric Motor & Generator is the result of his interest in providing an energy efficient low cost electric motor for use in transportation.

John Patrick Ettridge at the ABC                  "NEW INVENTORS"

Registered Business Address:
53 Branksome Terrace
Dover Gardens
South Australia. 5048

Ph. 61 8 82981698

Fax 61 8 8298 9080

Managing Director e-mail:

Sales, e-mail:        

The Inventors Homepage: and click on "other inventions" at the bottom of the page.

The Inventors Orbital Engine Website:

Orbital Engine 2 crank shafts. vanes in rotor.

Orbital Engine 2 crankshafts, vanes in stator.

Orbital Engine 3 crank shafts, vanes in rotor.

Orbital Engine 3 crank shafts, vanes in stator.