Our corporate name, TrekEase, is an anagram for Translational & Rotational Equivalent Kinetic Energy Aerobic Stationary Exerciser, which is essentially a definition for our device. At the heart of our exerciser is the patent pending wheelchair engagement mechanism, a simple technology that enables any wheelchair with a rear axle (camber bar) to be easily and securely embraced into our stationary roller & flywheel apparatus. Collapsible frame chairs without a rear axle require our adapter bar to engage the mechanism. Some specialized athletic wheelchairs cannot be adapted.
The wheelchair user backs up their chair until the rear wheels make contact with the 6" rollers. The user pushes down on the left and right levers that turn cam gears which elevate an incline plate to make contact with the rear axle. The rear wheels are raised about 1" off the floor and the incline provides a safe and secure means by which the weight of the user & chair causes the rear wheels of the chair to apply a horizontal force onto the contact rollers and thus ensure lateral stability.
The weighted flywheels provide for a rotational energy expenditure equivalent to propelling the wheelchair on level ground with additional rolling resistance and bearing friction. In this way the translational kinetic energy of a person pushing their own mass on the ground is approximated by rotational kinetic energy of the rotating flywheel masses.
Precise quantification of flywheel inertial characteristics, frictional coefficients and encoder speeds will provide sufficient information to derive handrim torque and power for our CLINICAL ANALYZER.