Abstract: A skateboard truck that includes an inertia drive attached to a wheel. The inertia drive causes an inertial mass (i.e. flywheel) to turn at a higher speed then the wheel. During “pumping” of the skateboard the wheels accelerate and an inertia drive helps propel the skateboard given its inertia combined with the wheel inertia. The inertia drive may be configured to maintain skateboard stability at high speeds.

Abstract: A fastener retainer may include a surface, a hook integrated into the surface, and a fastener hole defined in the surface below the hook.

Abstract: An automated clamping system for securing a work piece to the table of a machine tool. The clamping system automatically retracts away from the work piece as the material manipulating device moves into the area of each clamp. This allows manipulation of the work piece without stopping to move the clamp to a new location so that the clamp does not interfere with the metal manipulating device. A typical embodiment is the use of the system on a milling machine. The clamping system could be used with milling machines (both manual and computer controlled), routers, water jet cutters, laser cutters, flame cutters, and many other types of cutting machines.