Patent ID: 9186550
Filing Date: 2015-11-17
Classification: A61B,A63B,H01F

Abstract:
1. Exercise apparatus comprising a movable actuator against which a force can be exerted by a user to cause movement of the actuator, and a load system which provides an adjustable force to resist or assist the force exerted by the user by means of magnetic interaction between a fixed component and a movable component which is connected to the actuator so as to move in response to movement of the actuator, one of the fixed and movable components comprising a coil assembly which is energised by electricity from a source of electric current under the control of a microprocessor control unit so as to create a magnetic field which exerts a force on the other component; characterised in that the fixed component comprises the coil assembly, which includes a longitudinally arranged coaxial series of coil units; an elongate passage is defined within the series of coil units; and the movable component comprises a shuttle which is mounted for longitudinal movement within the passage; and wherein the supply of electric current from the source to each coil unit is independently controllable by the control unit, and wherein the source of electric current is connected to and disconnected from the coil units sequentially in a longitudinal direction as the shuttle moves in that longitudinal direction.