A combination including a track arrangement and a vehicle to be operated on the track arrangement. The track arrangement has two sets of laterally spaced apart running faces, each set including an upper running face and a lower running face. The vehicle includes a plurality of steerable axle assemblies, each axle assembly having an axle arrangement, a pair of upper wheels journalled on the axle arrangement and engageable with respective upper running faces; and a pair of lower wheels journalled on the axle arrangement and engageable with respective lower running faces. A steering arrangement urges the axle assemblies to align with the track arrangement. A loss sensing arrangement which senses a loss of adhesion or an imminent loss of adhesion of the upper wheels with respect to the respective upper running faces. A signal arrangement generates a signal indicative of one of the loss of adhesion and the imminent loss of adhesion of the upper wheels with respect to the respective upper running faces. An actuating mechanism forces the second set of wheels into running engagement with the respective lower running faces in response to the signal from the signal arrangement and with a force of engagement dependent on the signal from the signal arrangement.

A storage apparatus suitable for storing granular material in a large tank-like storage container into which material is introduced from an material inlet at a top of the storage container to pile up in a normal manner. A height adjustable leveling apparatus in the form of a rotary scraper is supported within the storage container which engages the uppermost portion of the heaped material and spreads it for leveling the upper surface of the material. Whereby the storage container may be filled to an upper level surface maximizing the useful volume of the storage container. Discharge from a central or peripheral port is likewise maximized by ensuring all material in the container to the discharge level is fed for reclamation.

An improved, interactive drag strip amusement ride that satisfies the need for a ride where any person can safely experience the thrills of a drag race and the requirements placed on a drag race driver. It comprises an apparatus for accurately simulating a drag race from the perspective of the race driver. The driver interactively controls the acceleration, gearshifting, and braking as if in an actual drag race.

The present invention provides an amusement ride having a self-propelled electric powered ride vehicle capable of maximum acceleration of about 0.3 to as much as about 1.1 G's in either direction using a unique pinch wheel drive system, and including an on board vehicle controller and peripheral equipment for controlling the vehicle. The pinch wheel drive system, which compresses driven wheel motor packages against a tractive surface, generates compression using a system which is independent of the vehicle's weight and motion. A master controller is provided for ride systems having multiple self-propelled vehicles on the same track for communicating with and coordinating the movement of the ride vehicles. This allows precise control of multiple ride vehicles to allow faster dispatch and shorter intervehicular spacings by implementing a floating zone control. Electric power compatible with the on board propulsion and controllers can be provided to the ride vehicles in a conventional manner using an electric bus bar mounted along the track. A ride vehicle of the present invention is capable of generating thrills not previously available in conventional roller coaster or powered vehicle rides, such as the ability to apply reverse propulsion and generate high performance maneuvers in reverse. Additionally, the pinch wheel drive system of the present invention provides the ability to generate electricity during deceleration or while coasting down hill. This enables the master controller to space ride vehicles so that some are consuming electricity while others are generating electricity, thus providing a highly efficient and economical ride. Further, because of the high accelerations possible, equivalent or superior thrill can be obtained using tighter horizontal curves and shorter hills, enabling use of a track having a smaller footprint than is possible using conventional components.

A freight system comprising a conveyor adapted to be driven along a monorail track. A frictional drive wheel of the conveyor engages the upper side of the track and various embodiments of reactive force creating means are positioned to engage the underside of the track to create improved frictional forces during ascendancy. All of these embodiments employ the weight of the unit to create the reactional force and in all embodiments there are positioned a pair of spaced apart guide rollers that engage the underside of the track. In some embodiments, these guides rollers are resiliently biased by either separate springs or by making the guide rollers themselves resilient. In some embodiments there is provided an intermediate fixed guide roller to limit the degree of relative movement between the conveyor and the track. In one embodiment, the guide rollers are suspended by a Y shaped lever that itself carries the load transmitted by the conveyor.