ACTUATOR GEARED FEEDBACK SYSTEM FOR A RESISTANCE TRAINING MACHINE AND METHODS OF USE

1 . An actuator geared feedback system for a resistance training machine, comprising:

an actuator operably coupled to a motor system, wherein the motor system is operatable to provide resistance in a resistance training machine;

the actuator shifts the motor system from a lower gear to a higher gear in a first actuator position, and the actuator shifts the motor system from the higher gear to the lower gear in a second actuator position;

wherein the higher gear includes a plurality of female engagement points for the actuator, and the actuator includes a plurality of male engagement points for the higher gear, such that the plurality of male engagement points lock into the plurality of female engagement points as to lock the actuator in the first actuator position and the higher gear, and preventing a failed shift of the actuator from the lower gear to the higher gear if the plurality of male engagement points do not lock into the plurality of female engagement points, then the actuator is biased by a spring to force the plurality of male engagement points into the plurality of female engagement points.

2 . The motor gear system of claim 1 , wherein the first actuator position is operably coupled to a first switch to confirm the actuator is in the first actuator position; and the second actuator position is operably coupled to a second switch to confirm the actuator is in the second actuator position.

3 . The motor gear system of claim 2 , wherein the plurality of female engagement points and the plurality of male engagement points include a conical configuration.

4 . The motor gear system of claim 2 , wherein the plurality of female engagement points and the plurality of male engagement points include a chaffered configuration.

5 . The motor gear system of claim 2 , wherein the plurality of female engagement points and the plurality of male engagement points include an angled chaffered configuration.

6 . The motor gear system of claim 3 , wherein the low gear is between about 1.6:1 and about 4.8:1 and the high gear is between about 22:1 to about 66:1.

7 . The motor gear system of claim 6 , wherein the actuator is operably coupled to the machine controller.

8 . The motor gear system of claim 7 , wherein the higher gear operates in an isokinetic mode and the lower gear operates in an isotonic mode or a calibration mode.

9 . The motor gear system of claim 8 , wherein the motor system further comprises a neutral gear position between the higher gear and the lower gear.

10 . The motor gear system of claim 9 , wherein the outer shifter shaft includes oil that smooths the shifting of the actuator and an O-ring that keeps oil from leaking past the inner shifter shaft.

11 . The motor gear system of claim 10 , further comprises a rotary seal coaxially coupled with the outer shifter shaft to keep oil from leaking out of the area around the outer shifter shaft.