Abstract: A driving wheel includes: a first disc provided to be rotatable with respect to a rotary shaft; a second disc provided to be rotatable with respect to the rotary shaft; a plurality of spokes each protruding outward and each having a first side rotatably coupled to the first disc and a second side rotatably coupled to the second disc; a first motor to rotate the first disc; and a second motor to rotate the second disc.

Abstract: A variable diameter wheel comprises a central hub, a peripheral band formed by a plurality of arcuate segments, each one of the arcuate segments being linked to the hub, wherein the hub comprises radial guide means for sliding retractable radial arms, each one of the retractable radial arms being secured to the distal end thereof of one of the arcuate segments, the opposing end being provided with a connection member with a mobile plate coaxial with the hub and in relative rotation with respect to the hub, the mobile plate having curved guide areas, each one of the connection members cooperating with one of the arms in order to control the linear and radial movement of the proximal end of the corresponding arm.

Abstract: A two wheeled throwable robot comprises an elongate chassis with two ends, a motor at each end, drive wheels connected to the motors, and a tail extending from the elongate chassis. A rear portion having a deep recess securing the pair of motors with brackets, and batteries with brackets. The forward part having a shallow recess with a printed circuit board secured therein having control circuitry. The wheels are less than six inches in diameter and the robot weighs less than five pounds.

Abstract: The anti slip device for automobile wheels with wheel discs arranged at inner side plain of the wheel, load-bearing part of which is attachable to the wheel from the outside. The extensible body is placed slidingly in the direction parallel to the wheel axis on the load-bearing part. There are arms fulcrumed on the extensible body around axes parallel to the wheel axis. The arms are fitted, at their ends, with surfaces of engagement, which bear against the tire peripheral surface in the working position. The extensible body is placed on the load-bearing part in the guidance, which comprises at least two pipes, with one outer pipe placed slidingly on each of the pipes and attached to the extensible body. There are tensile springs arranged in the pipes, and these springs are attached by one end to the load bearing part, and by the other end to the extensible body.

Abstract: A bolt assembly provides a reciprocating bolt. The bolt assembly includes a bolt assembly body, a cap affixed to the bolt assembly body, and a base affixed to the bolt assembly body opposite the cap, wherein the bolt assembly body includes a bolt carrier having a cap end disposed proximally to the cap and a bolt receiving end disposed distally from the cap. The bolt assembly also includes a biasing mechanism biasing the bolt carrier in a retracted position relative to the bolt assembly, and an extension actuator including a diaphragm having a center portion disposed between the cap and the bolt assembly body, the center portion of the diaphragm being deflectable to enable the biasing of the bolt carrier in the retracted position, the center portion of the diaphragm being oppositely deflectable to apply an actuation force to the cap end of the bolt carrier so as to move the bolt carrier from the retracted position to an extended position relative to the bolt assembly.

Abstract: A variable-diameter wheel 1 includes at least one rim or hub 11 having a predetermined diameter, to which at least one drive axle 14 of the wheel 1 is connected; at least one outer surface external to the hub 11, having a diameter which is greater than the diameter of the hub 11. At least one diameter-variation mechanism 3 is secured to the axle 14 and adapted to vary the actual diameter of the wheel 1 according to the torque applied to the drive axle 14 by at least one propulsion system.

Abstract: A wheel for mounting a tire thereon is provided. The wheel includes a wheel rim including a pressurized air reservoir, at least one air input to the wheel rim being coupled to the pressurized air reservoir, and at least one valve coupled between the pressurized air reservoir and a corresponding at least one air output from the wheel rim, the at least one valve configured to selectably supply pressurized air to an interior of the tire when mounted on the wheel rim.

Abstract: A passively transformable wheel includes a wheel base including a centrally positioned transmitter rotation shaft and one or more passive leg rotation shafts positioned in the outer periphery; a force transmitter rotatably coupled to an end of the transmitter rotation shaft, the force transmitter including a trigger slide and one or more passive leg joints spaced apart from one another; a trigger leg arranged between the wheel base and the force transmitter and rotatably coupled to the trigger leg rotation shaft, the trigger leg including a trigger joint fitted to the trigger slide; and one or more passive legs arranged between the wheel base and the force transmitter so as not to interfere with the trigger leg and rotatably coupled to the passive leg rotation shafts, the passive legs including one or more passive leg slides engaging with the passive leg joints of the force transmitter.

Abstract: An adaptive tire system can include retractable and extendable bolts for enhancing traction, for example, on ice-covered roadways. The system can include pneumatically operated bolt assemblies mounted inside a tire having custom reinforced belts. The bolt assemblies can include locking devices configured to be biased towards a locked position so as to lock deployable bolts into extended and/or retracted positions without the need for persistently or continuously applied actuation force or energy. The system can include wheel-mounted, manually operated controls or remote and/or automated controls. The system can include rotary unions for transmitting actuation controls from a vehicle body into an associated wheel. The bolts can also be adjustable and can include removable and replaceable tips serviced from tire exterior while inflated, deflated, on wheel or off wheel.

Abstract: A driving aid is provided for a motor vehicle on a slippery roadway and includes an auxiliary wheel with frictional elements adapted to be shifted between an inoperative position at a distance from the roadway and an operative position with frictional contact with the roadway and having an operative connection to an associated tire of the motor vehicle.

Abstract: A variable-diameter wheel 1 includes at least one rim or hub 11 having a predetermined diameter, to which at least one drive axle 14 of the wheel 1 is connected; at least one outer surface external to the hub 11, having a diameter which is greater than the diameter of the hub 11. At least one diameter-variation mechanism 3 is secured to the axle 14 and adapted to vary the actual diameter of the wheel 1 according to the torque applied to the drive axle 14 by at least one propulsion system.

Abstract: A stair climbing wheel and vehicles are described. The stair climbing wheel has a rolling wheel and a plurality of deployable protrusions that allow the wheel to climb stairs. The deployable protrusions can be deployed from or retracted into the rolling wheel. In the retracted position, the stair climbing wheel functions as a traditional circular wheel. These stair climbing wheels can be incorporated on a wide variety of vehicles, such as hand trucks, wheelchairs, and personal transports to allow these vehicles to climb stairs.

Abstract: The present invention relates to an improved structure of an automobile tire auxiliary device, especially relates to such a device capable of holding the tire to step up the friction force of the tire through a recess and an adjustable lug on the claw plates so that the automobile can pass through the land of snow, sand, mud and swamp or upward slope by virtue of poking the sand and earth.

Abstract: An apparatus for providing additional traction to the wheels of a vehicle during inclement conditions utilizes an adapter to accommodate its use with a variety of sizes of vehicle wheels and has features to permit its convenient installation and removal from the wheels of the vehicle. A vertical disc has a plurality of traction elements mounted on its periphery to engage the terrain, with the disc being cooperatively connected to the wheel adapter by means of a large coil spring. The spring permits flexure of the disc and traction elements in four dimensions, i.e. rotatively about the wheel axis, horizontally about the longitudinal axis of the vehicle axle to permit the disc to cant inwardly into contact with the top of the wheel or tire of the vehicle, vertically with respect to the terrain, and along the horizontal axis of the wheel axle toward and away from the wheel. The use of the single spring to provide the various modes of flexure facilitates simplicity in the construction of the apparatus.

Abstract: There is disclosed an anti-skid mechanism for a wheeled vehicle suitable for attachment to the outer surface of at least two wheels of said vehicle. The mechanism includes a central flanged disk adapted to be mounted on the outer surface of the wheel, an annular plate slideably mounted on the flange of said disk, plurality of radially moveable arcuate ground-engageable shoes independently and slideably mounted between the planar surface of said disk and said plate, cam means on said plate operatively engageable with a centrally located cam follower on said shoes and abutment means for moving said plate toward said disk and for clamping said shoes therebetween.

Abstract: A wheel for replacing a conventional rear wheel of an automotive vehicle, for travel on deep snow or ice-covered surfaces; the wheel including a circular wheel plate of steel, and teeth around its periphery, which each comprises a steel crosshead welded transversely across the periphery, and a replaceable cleat of rubber, bolted to the crosshead, each cleat including extendable carbide steel studs.

Abstract: The traction device of the invention is for use with a vehicle wheel supported by lugs and having a tire. The traction device has a base with openings for the reception of at least two but less than all, the lugs for supporting the base. A plurality of spaced radial arms are supported by the base with each having an end adapted to extend beyond the outer periphery of the tire and protrude into an icy surface. Each of said ends is adapted to lie in a vertical plane adjacent to the outer side wall of the tire. The end of each arm may advantageously be free to move in and out while being spring biased outwardly, be threadably attached to the arm for movement inwardly and outwardly, or be pivotally connected to the arm for movement into and out of an operative position. The said ends may extend different distances beyond the outer periphery of the tire. Preferably, the base is secured on less than all of the lugs and has a bearing recess accommodating a nut on a lug to which the base is not secured.