P14007: Wheelchair Assist
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Solution Parking Lot

Potential Uphill Movement Assist Solutions

1) Passive motor system. System will have motors mounted to the wheels and a sensor will determine the slope of the wheelchair and then apply a calculated amount of torque in the direction the user wants to go.

2) Spring energy system. Normal use or downhill movement will charge the system and the user will be able to harness the energy when moving up an incline.

Potential Downhill Movement Assist Solutions

1) Passive motor system. System will have motors mounted to the wheels and a sensor will determine the slope of the wheelchair and then apply a calculated amount of torque in order to help slow the chair down when moving down a decline.

2) Sensor or user activated braking system. Brakes would be caliper or disk type rather than normal tire brakes. This would allow for more precise braking therefore allowing the user to move slowly down a ramp without stopping completely.

3) Gearing system that will allow the wheels to turn more slowly.

4) Magnetic system that will slow the wheels down and potentially regain energy and input it back into the system.

Potential Anti-Tip Solutions

1) Spring loaded wheel system behind chair

2) Wheel system that can be raised and lowered via input from the user or a sensor in the chair

Potential Anti-Rollback Solutions

1) Ratcheting system that can be engaged either by the user or a sensor when moving uphill. When the user is on flat ground, the wheels will be able to move freely.

2)Gearing system that drastically reduces the amount of force needed to drive the wheels. Wheels will still roll back some but it won't be as far as normal.

3) Bicycle cassette type system where the wheels can spin in one direction but not the other. Would need to be reversible.


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