Patent ID: 7641599
Filing Date: 2010-01-05
Classification: A61H,A63B

Abstract:
1. An exercise therapy device comprising: a rotatable pedal shaft pulley; pedals connected to the pedal shaft pulley for rotating the pedal shaft pulley upon application of a force to the pedals by a user using the exercise therapy device; a load motor coupled to the pedal shaft pulley for supplying an assisting force assisting the user in rotating the pedal shaft pulley; a transmission, including a load side pulley and an endless belt, coupling the load motor to the pedal shaft pulley and transmitting a driving force applied to the pedals by the user in rotating the pedal shaft pulley to the load motor, and transmitting the assisting force from the load motor to the pedal shaft pulley; a sag detector detecting sag in the endless belt and outputting a sag detection signal in response to detection of sag in the endless belt; and a load control device