CRASH CARS

    CRASH CARS are a toy car, roughly the size of a matchbox car, that is based on the law of conservation of energy.  After the flip arm has been secured in the locked position, the car is pulled back along the floor.  The "Drive Tires" wind up a coil spring in the car as the car is pulled back.  When the car is released, the coil spring unwinds.  The drive wheels roll forward, and the trigger mechanism moves closer and closer to unleashing the flip arm with every forward turn of the drive tires.

The latch (which is not shown in the sketch above) is on the "gear and trigger".  The flip arm slips in under the trigger.  The latch will move towards the drive tires and eventually release the flip arm.  Note that the "gear and trigger" only have power when the drive tires (pointed to in the sketch above) rotate forward.

Children are expected to play with CRASH CARS in much the same way that they play with matchbox cars.  The power of the cars, as well as the flipping action should add to the enjoyment and imagination of the child.

The cost of manufacturing CRASH CARS is relatively inexpensive.  None of the gears need to be made of high grade materials.  The extra "action" components physically will not cost much.  However, putting them into place may take a clever manufacturing line to minimize costs.

ALL RIGHTS RESERVED
Contact: Dan Bogard
wdb@andrew.cmu.edu