An underwater mobile observatory system comprising an aquarium able to hold water and large enough to support fish, coral, and to display artificial objects such as shipwrecks and ruins, a vehicle track extending through the aquarium the track generally being adjacent the bottom of the aquarium, the track having a portion which rises to a loading/unloading position, and a passenger vehicle coupled to the track for movement therealong and unable to leave the track such that changes in inclination of the track causes the vehicle to move up and down through water in the aquarium, the passenger vehicle having a main body portion to seat passengers and which is capable of being submerged, and a top portion which is open to the air, the spacing between the hack and the water level being controlled such that water does not pass over the top portion.

A transmission for a vehicle, particularly a skid-steered vehicle, that employs motive power from a prime mover delivered through an input shaft to drive left and right drive shafts at a nominal speed and input power from an electric motor to vary the speed of the left and right drive shafts according to steering commands from a steering control structure. The speed of the left and right drive shafts is directly related to a speed of the input shaft and the nominal speed of the left or right drive shaft is varied upwardly or downwardly by a ratio of the speed of the steering shaft via a speed varying structure. The speed of the left and right drive shafts is simultaneously varied in opposite directions (i.e. upwardly and downwardly) relative to the nominal speed by an equal number of rotations.

A watercraft propulsion system configured to be coupled to the transom of a boat. A continuous track is supported by a suspension frame and operably coupled to an outboard motor.

A multipurpose watercraft has a pair of catamaran pontoons supported by way of a transverse control bar at forward regions thereof. The watercraft may have an arched equipment rack framework extending above rearward regions of the pontoons. The watercraft also has a pair of electric motor thrusters located respectively beneath each pontoon and the control bar comprises a pair of controls operable by hand, each control operable to control a respective thruster forwards or backwards. Alternatively, the thrusters may be remotely controlled. This configuration allows an operator to be pulled behind the control bar horizontally between the pontoons, snorkellers to be pulled behind the watercraft for recreational sightseeing and/or for remote-control rescue operations.

There is provided an amphibious vehicle for use on land and water comprising lateral floaters which increases the stability of the vehicle when in water. While on land, the lateral floaters may be retracted within the body of the vehicle to reduce the width of the vehicle.

A snowmobile accessory that includes two buoyant front skis and two buoyant rear floats to mount under foot boards or running boards. A user with a snowmobile may simply mount the kit to a snowmobile for use when crossing bodies of water dry land, snow & ice. The present invention may be mounted in less than 30 minutes.

A vehicle capable of multiple varieties of locomotion having a main body; a plurality of motors and blades providing flying capability; each motor being associated with and powering a blade assembly; two legs extending from opposing sides of the main body creating a ground propulsion system. The ground propulsion system having two legs; each leg connected to a track body at the opposing leg end; each track body comprised of a plurality of drive gears; each track body connected to and retaining a track providing ground propulsion. The vehicle can either drive or fly based on its base structure, in additional to carrying a payload. The payload is carried below the main body of the vehicle and between the tracks or running gear. When the vehicle is in flight, the tracks are able to rotate up into a fly/flight mode to protect the blades during flight.

An amphibious vehicle power train having an engine (2) with an output shaft (4), driving an input member (6) of a variable speed change transmission (11). The speed change transmission, which may be a continuously variable transmission is arranged to drive road wheels through an output member (8). The engine also drives a marine propulsion unit (24). The axis of the output member (8) is above the axis of the input member (6). Four wheel drive may be provided (FIG. 2).

An amphibious vehicle power train having an engine (2) with an output shaft (4), driving an input member (6) of a variable speed change transmission (11). The speed change transmission, which may be a continuously variable transmission is arranged to drive road wheels through an output member (8). The engine also drives a marine propulsion unit (24). The axis of the output member (8) is above the axis of the input member (6). Four wheel drive may be provided (FIG. 2).

An all-terrain rover has a ladder frame having one or more crosspieces, two drive units connected on opposite sides of the frame, first and second auger cylinders engaged with the drive units so as to be urged into rotation by the drive units, each cylinder comprising a sealed hollow cylinder; and a spiral auger flange affixed to the exterior of the cylinder, wherein the drive units are in contact with the axes of the auger cylinders are parallel and the flange of the first cylinder is wound in an opposite direction to the flange of the second cylinder, and wherein the cylinders are each counter-rotated to urge the rover forward. In one embodiment sampling equipment is mounted on the frame. In another, each cylinder further comprises a conical end cap at each end. Each cylinder may have a frustaconical end cap at each end, and each cylinder may be buoyant.