Abstract: Pneumatically supported towers for low gravity applications are disclosed herein. In one aspect, an inflatable tower for use in vacuum environments can have a membrane configured to support a load when inflated with an inflation gas to a pressures less than 100,000 pascals and greater than 0.01 pascal. The inflation gas can be chosen to have a sufficiently low boiling temperature at the inflation pressure of the membrane that the gas will not condense to a liquid or solid within a defined range of temperatures in which the tower is designed to operate. The membrane can be configured to be packaged for transport in deflated condition and rolled onto cylinders from which the membrane can be later unfurled and inflated as part of the tower inflation process.

Abstract: Safety apparatus for motor vehicles such as boats, snowmobiles, motorcycles, motorbikes and the like, having a handlebar control includes a hand grip mounted on the handlebar and a safety switch in the hand grip for shutting down the power unit of the vehicle in response to withdrawal of the operator's hand from the hand grip of release of hand pressure thereon.

Abstract: A boat adapted to be powered by an outboard motor pivotally mounted on the transom, the motor of the type including a throttle and a gear shift. The boat includes a hull having a bottom wall, a bow and a stern and a floor adapted for supporting a rider in standing position intermediate the bow and stern. An upstanding rider support structure adjacent a forward portion of the floor extends upwardly to a level above the floor for providing physical support for a rider in standing position while riding the boat. A unitary control for the boat and outboard motor includes a handle bar structure pivotally mounted on the rider support structure and cable-connected for steering the outboard motor by pivoting the motor on the transom. A rotatable motor throttle control is mounted adjacent a portion on one side of the handle bar for axial rotation and is cable-interconnected for controlling the throttle position of the outboard motor.