Abstract: A toy vehicle includes a chassis, at least two wheels, and an actuating mechanism configured to couple the at least two wheels to the chassis and to move the at least two wheels between a retracted position and an extended position in which a width of each wheel of the at least two wheels is increased. The actuating mechanism includes a lever configured to be moved between a first position corresponding to the retracted position of the at least two wheels and a second position corresponding to the extended position of the at least two wheels. The actuating mechanism further may include an actuator configured to move the lever from the first position to the second position and from the second position to the first position.

Abstract: A watercraft is powered by a user sitting on a sliding seat and using footrests. The user operates a simulated rowing mechanism which includes a handle, cord, and reel. Power is transmitted through the rowing mechanism to a series of paddles, which move in a loop in a horizontal plane through the water underneath the watercraft. The paddles are mounted on a belt that passes around front and rear wheels. The paddles are feathered when moving forwards, by means of followers and/or a cam surface.

Abstract: A high speed paddle wheel catamaran includes a hull configuration having a main hull portion with at least one defined cavity area in a lower surface of the main hull and opposing side pontoons depending from the main hull portion. The depending side pontoons correspond in orientation to a longitudinal axis of the catamaran. A paddle wheel assembly for the vessel includes a rotatable cage hub mounted on each pontoon. A plurality of vane members are rotatably mounted between the opposing cage hubs and adjacent an outer perimeter thereof. Each vane member is selectively rotated to one of a lift or thrust position according to an arcuate location of the vane as it passes through the water.

Abstract: An expandable wheel assemble for toy vehicles includes an axle, a first hub fixed to the axle, a second hub supported by the axle, and at least one web that spans between and is joined to the hubs, and has a central portion movable outwardly from the axle due to centrifugal force when the wheel assembly is rotated.

Abstract: The main rotor (1) located at the bow (3) of the hull (4) is transverse to a vertical plane through the axis of the hull and consists of two or more units of cylindrical wheels (5), which are equipped with blades (17). Each unit of cylindrical wheels (5) is provided with its own independent braking device (13). Longitudinal channels (30 and 31) are made on the bottom (29). These channels have different cross-sections along the axis of the hull. To be more precise, their cross-sections decrease from bow (3) and stern (32) to the bottom center (29). Secondary propelling and maneuvering devices consist of secondary rotors (2), water-jets or similar components which are housed on the bottom (29) in pairs of two.

Abstract: A crayfish harvester boat apparatus having a principal boat portion open ended with side walls and a bottom portion defining a container and occupant space therewithin; a pair of rear drive wheels hingedly mounted to the rear portion of the boat, and a steering wheel hingedly mounted to the front portion of the boat, the rear drive wheels in front steering wheel so mounted to the boat so that upon application of pressure, the boat can be lifted from position flat against the ground to a position substantially above the location of the rear drive wheels and front steering wheels; the power means including hydraulically controlled pistons for lowering and raising the boat between positions. There is further included a power drive system connected onto the rear drive wheels for providing a plurality of drive speeds to the apparatus as it is propelled on land or in water.

Abstract: The present invention provides a paddle boat having a hull and a closed loop flexible member which is rotatably mounted to the hull while a pedal assembly longitudinally drives the flexible member around its loop. A plurality of substantially planar paddles are pivotally mounted to the flexible member at spaced positions therealong. The paddles are pivotal between a first and a second position. In the first position, the paddles extend outwardly from the flexible member and propel the hull forwardly as the flexible member is driven by the pedal assembly. Conversely, in its second position, the paddles lie in planes substantially parallel to the direction of travel of the flexible member to permit free gliding of the boat. However, a locking assembly is associated with at least one paddle to lock the paddle in its first position when the flexible member is driven in the reverse direction.

Abstract: An amphibious toy vehicle having paddles located within the wheels of the toy vehicle which can be extended outside the wheels in order to propel the vehicle forward and backward in water. A flotation chamber is provided at the bottom of the vehicle. A gear assembly including rack gears is used to extend and retract the paddles. After the paddles are retracted inside the wheels, the toy vehicle may be moved over a supporting surface by the rotating wheels. A downwardly extending portion attached to an upper body of the amphibious toy vehicle helps to keep motors mounted inside the vehicle dry when the toy vehicle is placed in water.

Abstract: A self-propelled air cushion vehicle includes a traction wheel device comprising at least two separate traction wheel units. Each traction wheel unit includes at least two consecutive wheels surrounded by a common caterpillar track, preferably two such wheel pairs arranged side by side. The traction wheel units are arranged in the longitudinal direction of the vehicle, one at the fore end of the vehicle and the other at the rear end of the vehicle, both at the central longitudinal axis of the vehicle.

Abstract: A water bicycle and a detachable device for converting a sail board into a water bicycle. The water bicycle has a flotation member and a frame removably mounted to the flotation member. Pedals are rotatably mounted to the frame. Paddle wheels are provided on either side of the frame and are interconnected with the pedals so as to be rotatably driven by the pedals. A steering handle is rotatably mounted to the frame and is interconnected with the paddle wheels to selectively steer the water bicycle by raising and lowering the paddle wheels.

Abstract: A water-borne vessel propelled by a plurality of propulsion wheels each of which has a plurality of hydrofoil units disposed circumferentially around the drive shaft of the propulsion wheel on a support. In one embodiment, a tire for a land vehicle, is provided coaxially with the hydrofoil units on the drive shaft. The tire has a radius greater than the radial distance between the shaft and the units to form an amphibious vehicle.