An unmanned vehicle capable of tunneling into soft materials, such as sand, comprises a hollow, bullet-shaped forward outer body with a first drive screw thread integrated into its exterior, a hollow cylindrical rear outer body with a second drive screw thread integrated into its exterior but threaded in the opposed direction of the first drive screw thread, and an inner body that is rotatably coupled to the inside of the forward and rear outer bodies via mechanical gears, and including directional control fins mounted on a housing at the rear end of the inner body.

Embodiments of amphibious vehicles are disclosed herein. In one embodiment, the amphibious vehicle includes a body that defines a buoyant hull. The buoyant hull includes a bottom, and a pair of lateral sides. The bottom extends downward at the lateral sides to form a pair of pockets, and each pocket is open to atmosphere through an upper side of the hull and is closed at a lower end by the bottom of the hull. In addition, the amphibious vehicle includes a plurality of wheels mounted to the lateral sides of the body, and a pair of tracks disposed about the wheels.

A power train for an amphibian operable in land and marine modes includes a prime mover having an integral speed change transmission, at least a first land propulsion unit, at least a first marine propulsion unit, and a power transmission unit including a drive member configured to couple the prime mover to the at least first marine propulsion unit, wherein the prime mover is arranged to drive the at least first land propulsion unit through/via the integral speed change transmission in the land mode, and the prime mover is arranged to drive the at least first marine propulsion unit through/via the power transmission unit in both the marine mode and the land mode.

The invention relates to design of all-terrain vehicles. The vehicle comprises a gas line which is connected to all of the wheel tires simultaneously and is coupled to a system for inflating the tires. A suspension comprises a wheel springing system connected to the wheel tires, a pneumatic drive and a system for inflating the tires, wherein the wheel springing system is configured in the form of an gas line formed from the cavities of the pipes from which a frame is welded, or is configured outside the frame, forming a closed loop that is connected to each of the tires by means of pipes with closure members, and wherein the pneumatic drive and the system for inflating the tires are constituted by an engine exhaust system which is provided with a baffle and is coupled to the air line by means of a pipe with a closure member.

The invention relates to design of all-terrain vehicles. The vehicle comprises a gas line which is connected to all of the wheel tires simultaneously and is coupled to a system for inflating the tires. A suspension comprises a wheel springing system connected to the wheel tires, a pneumatic drive and a system for inflating the tires, wherein the wheel springing system is configured in the form of an gas line formed from the cavities of the pipes from which a frame is welded, or is configured outside the frame, forming a closed loop that is connected to each of the tires by means of pipes with closure members, and wherein the pneumatic drive and the system for inflating the tires are constituted by an engine exhaust system which is provided with a baffle and is coupled to the air line by means of a pipe with a closure member.

A sit-astride amphibious vehicle configuration which supports a high performance envelope both on land as well as in water. The vehicle has a planing hull and four retractable wheels. Handlebars provide for directional control in both modes of operation. Each road wheel is retractable by pivoting through at least 45 so as to maximize ground clearance when in the land mode of operation and to minimize drag at substantial lean angles when in the marine mode of operation. While a jet drive may remain directly connected to the engine at all times, the driven wheels are only connected during land mode via a speed-change transmission. The entire power train is supported by a frame that is separable from the hull which in turn has a detachable top deck portion, whereby such configuration simplifies the construction, repair and servicing of the vehicle.

A two wheeled planing amphibian (10) has a hull (20), bow (24), front wheel (30) and rear wheel (40). Front suspension (32) and rear suspension (42) are retractable, separately or simultaneously. Front wheel (30) may retract vertically or rotationally. Steering is by handlebars (50), link (54), and forks (36). Front wheel (20) may be located outside the hull in both protracted and retracted positions. The underside of hull (20) may be continuous in both land mode and marine mode along and across its centreline from the bow to the rearmost underside point on the hull along the centreline; or from the forwardmost underside point on the hull when it is planing at its lowest speed to the rear. There may be no wheel closures attached to the hull. A wheel bay (22), which is open at its top side, may be provided to allow rear wheel retraction.

An amphibious pumping vehicle has a floatable vehicle body, a ground engaging propulsion structure, a fluid pump, a plurality of fluid nozzles comprising a first fluid nozzle connected by a fluid conduit to the fluid pump and at least one second fluid nozzle connected to the fluid conduit, a valve structure in the fluid conduit, the plurality of fluid nozzles and the valve structure co-operating to provide directional control and motive power for the vehicle when floating, and a power source configured to provide power to both the ground engaging propulsion structure and the fluid pump.

A shock absorbing system of an amphibious and remotely controlled vehicle is provided, including a chassis, a controller, a transmission shaft, six transmission members, a front wheel driving mechanism, a rear wheel driving mechanism and a smart electronic device. When the smart electronic device transmits a first control message, the controller drives the transmission shaft to pivot toward a first direction, the transmission shaft leads the six transmission members to pivot and the controller and the chassis move away from the casing of the remotely controlled vehicle. When the smart electronic device transmits a second control message, the controller drives the transmission shaft to pivot toward a second direction, the transmission shaft leads the six transmission members to pivot and the controller and the chassis move toward the casing of the remotely controlled vehicle.

A human powered watercraft or land vehicle is described herein. A watercraft or land vehicle may have two pedals that reciprocated are in a linear or slightly curved trajectory but not a circular motion. As the two pedals are reciprocated, an output shaft is rotated in either a clockwise or counterclockwise direction when the left pedal is pushed forward or when the right pedal is pushed forward. The output shaft may be connected to a propeller of a watercraft or a land vehicle so as to propel the watercraft or land vehicle forward. The output shaft may receive rotational input through two gears mounted to the output shaft with one-way bearings that enable the output shaft to rotate in the same direction regardless of whether the left pedal or the right pedal is being pushed forward.