Patent ID: 7816875
Filing Date: 2010-10-19
Classification: E05F,E05Y,E06B

Abstract:
1. A method for gearless operation of a slide gate capable of high torque actuation at slow speeds, comprising: adapting a frame member to support a Lorentz force motor; attaching said Lorentz force motor directly to a slide gate so that said swing gate moves at a substantially similar speed as a rotation speed of said Lorentz force motor; adapting a controller to control said rotation of said Lorentz force motor; connecting a sensor to said controller, said sensor adapted to generate a signal after detecting a predefined event; retrofitting said Lorentz force motor with a sprocket, wherein said sprocket is rotably coupled to said Lorentz force motor; attaching a chain to said sprocket; attaching an idle wheel for maintaining said chain mechanically connected to said sprocket, wherein said chain runs parallel to a track, and wherein said chain is adapted to transfer a mechanical force generated by said Lorentz motor to said slide gate; and adapting said slide gate to move on said track.