Abstract: A method and apparatus for display of a three dimensional virtual image is provided. The present invention allows one or more objects, real images and virtual images to be displayed at one or more of an arbitrary number of depth levels along a viewer's line of sight. The present invention uses a plurality of beam splitters organized as an optical labyrinth to combine a images with the proper perspective and parallax to result in a three dimensional image.

Abstract: This disclosure relates to a ride vehicle for use in an amusement attraction. The ride vehicle mounts a passenger supporting structure upon a motion base, so that the passenger supporting structure may be articulated about one or more axes as the vehicle moves. Thus, this "simulator ride" carries passengers through three-dimensional scenery and articulates the passenger supporting structure in synchronism with motions of the ride vehicle, the motions of moving show sets, which are external to the vehicle, sound, projection and other effects. The ride vehicle is programmably-controlled by a redundant, two computer control system aboard each vehicle, which controls motions of the ride vehicle in synchronism with actions of the motion base and other special effects in accordance with a selected one of a plurality of ride programs.

Abstract: A virtual reality system is provided in which a user can be assured of reaching a destination in a virtual world within a specific time while providing the impression that the user is free to roam the virtual space at will. A virtual leader is projected in front of the user by the system. The virtual leader appears to lead the user but is actually linked to a virtual stick connected to the user, so that as the user moves or turns, the leader moves or turns to stay at substantially the same position relative to the user.

Abstract: A helmet mounting device which allows a helmet to be securely mounted to a user's head in a desired alignment, without irritating chin straps, is provided. The device includes a frame and a liner with a retention band that can be uniformly tightened about the user's head and that aligns with cranial features such as the indentation in the occipital area at the base of the skull. A plurality of these devices can be given out in advance to users waiting on line for a virtual reality amusement attraction, who can don them in advance. When a user reaches the attraction, he or she can easily slip onto the device a helmet having shape complementary to the device for quick alignment. When the user is finished, the device can easily be cleaned before being given to the next user.

Abstract: A vehicle that provides safe and stable transportation of passengers, yet allows passengers, including wheelchair-bound passengers, to quickly enter and exit the vehicle without climbing up or down and without stepping on the seats has been provided. The preferred embodiment of the vehicle of the present invention, which is towed by an underwater cable system, has a double hull construction with a fixed outer hull and a moveable inner hull or seating platform, which may be raised or lowered. In the ride dispatch area, the inner hull is raised so that the floor of the inner hull is even with that of the vehicle gunwales and the dispatch floor level. During the ride, the hull is lowered so that the floor of the inner hull is below the level of the vehicle gunwales, and thus the vehicle forms a secure and stable seating compartment configuration for the duration of the ride. The vehicle is further equipped to secure wheelchair-bound guests to the inner hull quickly and easily.

Abstract: An amusement ride attraction, with a rotating tube and an image is disclosed that is, relatively inexpensive and compact. The viewer stands inside the rotating tube, and the forces applied to the viewer are in automatic synchronization with the projected image. This creates an illusion that the person is moving in a moving vehicle, thereby resulting in a feeling of motion and a simulated experience of participating in the activity. The cylinder is rotated in a clockwise or counterclockwise direction in synchronization with movements of the projected image showing a "rider's eye" view from a moving motorcycle, airplane, car, or the like.

Abstract: A motion base for an apparatus for subjecting a user to sensory experience is provided. The motion base has a motion generator for moving a platform about at least one axis of rotation. The platform supports the user such that the user's center of gravity is substantially coincident with the center of rotation of the platform. The active elements of the motion generator are separate from the elements that support the weight of the apparatus and the user.

Abstract: A system and method for generating special effects showers of sparks for use in theme park shows and rides. A flint rod is biased with fluid pressure against a cutting wheel of this system. When a clutch is actuated for a brief predetermined time period, a constant high speed motor is operatively connected to the cutting wheel, rapidly rotating it. The rotating wheel cuts, ignites and discharges small portions of the flint rod biased thereagainst away therefrom in a stream of sparks. An air stream directs the stream of sparks out as a special effects shower of sparks. One embodiment of this system propels the spark stream out through a venturi nozzle. By changing the gas stream fluid pressure and/or the clutch connect time and/or the flint rod biasing pressure and/or the clutch connect/disconnect interval timing, the size and characteristics of the shower of sparks can be accurately controlled and altered as desired.

Abstract: A drinking fountain having a spout, a human actuatable valve for controlling the flow of water from the spout, a basin for collecting the water and a drain pipe. An audio system includes a speaker wherein the speaker is mounted to the drain pipe in such a manner as to direct soundwaves into the drain pipe. The audio system is responsive to actuation of the valves such that it plays an audible sound from the speaker in response to the actuation. The audio system may include a sequential sound source having a plurality of sound clips that are playable in response to respective actuations of the valve.

Abstract: The present invention is a method for transmitting full frequency digital audio signals over a network in real time and for providing access to a remote sound server. The present invention is preferably practiced using ISDN and is useful for remote casting auditions and for other communications. The present invention allows two or more sites on a network to communicate simultaneously. Live high-fidelity audio may be stored locally and/or transmitted to another site. At the other site, the audio may be stored and/or reproduced in high fidelity. Sound samples may be retrieved from a sound sample server and transmitted in high fidelity in real time over the network.

Abstract: The present invention provides a water slide which includes a device for reducing the impact felt by riders or users when they contact the slower-moving water at the bottom of an incline. Such slower moving water can be particularly injurious to a user who is traveling at relatively high speed (e.g., down a particularly long or steep slope). The device for reducing impact is a section of slide of predetermined length which includes air injection nozzles for reducing the apparent density and viscosity and increasing compressibility of the water to enable the user to slow down more gradually by transitioning from reduced density water to normal density water.

Abstract: An over-the-shoulder passenger restraint system that operates in three modes and permits fine adjustments of two pairs of pivoting elements, one pair located behind and above the passenger's shoulders, the second pair located in front of the passenger is described. Fine adjustments permit the securing of guests of varying sizes, from small children to tall or overweight adults. The restraint fits each person snugly, thus minimizing potential of injuries while also not blocking the view of a show or scenery around which a ride is themed. The restraint system is also very safe; when passengers are boarding the ride, the restraint cannot be moved, making it useful for balance. After passengers are seated, the restraint can only be pulled downward toward the passenger. During the ride, the restraint is locked and cannot move up or down. When passengers are exiting the ride, the restraint can only be moved upward and away from the passenger.

Abstract: A system and method for launching projectiles, such as fireworks projectiles, which explode in the air into a pyrotechnic display. The projectile includes a shell constructed from a binding agent and an explosive additive which explodes the shell into small particles. The explosive additive, which may be nitrocellulose, causes the exploded particles to be rapidly burned and consumed to form lightweight, inert flakes that fall harmlessly to the ground. The projectile is aimed and launched by a launcher to rapidly expel the projectile from a launching tube. Once in the air at a predetermined location in the sky, a fuse inside the projectile operates to detonate the projectile into its intended pyrotechnic display. The fuse is extremely accurate and enables detonation of the projectile at precise altitudes. An electronic control system controls launching and detonation of the projectiles in a precise and repeatable manner.

Abstract: Method and apparatus for synchronizing performance of audio, lighting, animation, and special effects programs at a plurality of remote locations, such as on parade floats, in which the programs are stored at each location as digitally-encoded information in the memory of one or more controllers, and DTMF tone bursts are transmitted over a selected radio frequency as a synchronization signal to each remote location for controlling synchronous performance of the programs by audio, lighting, animation, and special effects systems on the floats. The DTMF tones control retrieval from an audio controller of an audio program and a SMPTE time code signal for synchronous control of the lighting, animation, and special effects systems.

Abstract: Aperture stops are positioned in the optical train of a partially overlapped binocular display in a such a manner that overlapping portions the binocular boundaries of the left and right fields of view are substantially out of focus, and therefore do not appear as well defined, distracting contours in the visual field. The present invention is particularly well suited for use in virtual reality systems employing head mounted displays.

Abstract: This disclosure provides to a ride vehicle for used in an amusement attraction. The ride vehicle mounts a structure upon a hydraulically-actuated motion base, so that the passenger holding structure may be articulated about one or more axes as the vehicle moves. Thus, this "simulator ride" carries passengers through three-dimensional scenery and articulates the passenger holding structure in synchronism with motions of the ride vehicle, the motions of moving show sets, which are external to the vehicle, sound, projection and other effects. The ride vehicle is programmably-controlled, and derives electrical power from a track mounted power bus to drive vehicle hydraulics, which drive motion base actuation, steering and vehicle velocity.

Abstract: A lateral energy absorbing device for an amusement ride vehicle includes a vehicle chassis with a driver for moving the vehicle along a path, and a vehicle body having an area for holding one or more passengers. Appropriate steering mechanisms are provided to permit lateral motion of the vehicle with respect to the path. The lateral energy absorbing device comprises an actuator having one end pivotally connected to the chassis and another end pivotally connected to a follower apparatus adapted to follow a predetermined route along the path. The actuator includes an energy absorber for limiting the lateral travel of the vehicle and for absorbing lateral kinetic energy of the vehicle when its lateral motion with respect to the path reaches or exceeds a predetermined distance.

Abstract: An improved amusement ride and ride vehicle that permit a passenger to control the rotation of a passenger car as the vehicle travels along a ride course. The ride vehicle includes a support tube upon which the passenger car is rotatably mounted and a passenger operable steering mechanism. The ride vehicle also includes a spin shaft that extends down through the support tube. The spin shaft permits the use of safety systems that are mounted to the chassis of the ride vehicle. Control logic may be used to turn the passenger cars to a preferred orientation at the end of the ride. The ride vehicle itself may be barbell shaped to permit it to turn sharp corners along the ride course. The passenger car also includes a readily adjustable lap bar that is self-releasing. A slot cover, a plow assembly for displacing the slot cover and a slot cover switch are also provided.

Abstract: An electronic time fuse for controlling and initiating the explosion of an explosive is provided. The fuse comprises a timing circuit, an energy storage means, and a explosion initiation means. The fuse is initially connected through a two-wire interface to a local control unit (LCU). The LCU tests the integrity of the fuse, charges the energy storage means, measures the clock accuracy of the fuse, compensates for any inaccuracy of the fuse clock, loads timing information into the fuse, and commands the fuse to begin a timing sequence toward explosion. The fuse responds to LCU commands. The fuse ignores signals present on the two-wire interface for a period of time after the command to begin the timing sequence toward explosion is given. The fuse also monitors the status of the two-wire interface and the signals present on it and resets the fuse to an inert state if any irregularities are detected.

Abstract: A method for treating acetate-based films, particularly those having a magnetic particle layer onto which a sound track has been recorded, so that information recorded on the film can be reproduced even when the film has been distorted by heat or humidity. The film is placed in a container where it contacts a sufficient amount of steam until the film absorbs sufficient moisture from the steam so that it softens and becomes sufficiently flat to provide good contact with a playback head. Preferably, the film contacts the steam for about 10 to about 20 seconds and, in particular, about 15 seconds.