ApplicationNo. 866112 filed on 04/07/1992
US Classes:482/9, To create or modify exercise regimen482/901HAVING COMPUTER CIRCUITRY
ExaminersPrimary: Apley, Richard J.
Assistant: Richman, Glenn E.
Attorney, Agent or Firm
International ClassA63B 021/00
AbstractAn isokinetic exercise system includes an active exercise resistance unit and a computer controller. The active exercise resistance unit includes a lever arm assembly attached to a motor, and a patient attachment cuff is slidingly mounted to the lever arm assembly. A potentiometer is used to determine the length of the patient's limb, and a potentiometer/optical encoder assembly is used to determine the angular position of the lever arm assembly as the limb is exercised. A strain gauge assembly is used to determine the torque applied to the lever arm assembly. The limb length, position and torque values are converted into digital form and supplied to a computer. The computer accepts selected velocity and maximum torque value from the operator and uses these values to control the velocity of and torque applied to the lever arm assembly. More specifically, the computer predicts a subsequent lever arm angular position based on the set velocity. If the actual subsequent angular position of the lever arm assembly does not match the expected position, then motor current is directly adjusted to ensure that subsequent actual and calculated positions of the lever arm match. The exercise system also includes a torque limiting function wherein the torque applied to the lever arm or patient attachment device is limited to a set maximum. If the patient attempts to exceed this maximum torque, then the motor accelerates the lever arm to keep the torque within the prescribed limits.
Field of SearchBicylcling
Utilizing specific resistance generating structure
Utilizing force resistance generated by user only
Utilizing inertial force resistance
HAVING SPECIFIC ELECTRICAL FEATURE
Amount of resistance
Regulates rate of movement
Rate of movement
Monitors exercise parameter
To create or modify exercise regimen
HAVING COMPUTER CIRCUITRY
ERGOMETER WITH FEEDBACK TO LOAD OR WITH FEEDBACK COMPARISON