Stannah Stairlifts Limited

Gavin Scott Pugh

Paul Alexander Cook

The invention provides a method and apparatus for continuously adjusting the speed of a stairlift in response to a number of operating parameters such as battery voltage and motor current draw. The method preferably further includes monitoring the speed of a reference point on a stairlift chair and comparing this with a maximum permissible speed.

In or relating to stairlifts

The invention provides a method and apparatus for controlling the speed of a stairlift (). The speed of rotation of the carriage (), whilst traversing bends in the rail (), is monitored and the speed of the carriage drive motor () then controlled in reaction to the speed of rotation. A 3-axis gyroscope () is preferably used to monitor the speeds of rotation of the carriage () and the outputs from this gyroscope () may be processed to provide different degrees of speed control.

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Farnham Surrey, United Kingdom

Gavin Scott Pugh