Abstract: A wheel restraint system especially useful for restraining break-away wheels on drive axles and also to trailer axles, having a tether, a cable end component, a thrust bearing, and a wheel retention subassembly which fits over a wheel hub, wherein the tether is secured to the vehicle, such as secured to the inside wall of a hollow axle or through a hollow axle to an opposing similar wheel restraint system.

Abstract: An apparatus for restraining wheel assemblies mounted on an axle assembly. The apparatus comprises a tether assembly and a tensioning mechanism. The tether assembly is extendible through a passage of an axle body and comprises a flexible cable, a first cable end attached to one end of the cable, and a second cable end attached to the other end of the cable. The tensioning mechanism is coupled to the second cable end and includes a first wheel threadingly connected to the second cable end, and a second wheel rotatably coupled to the first wheel in a way that rotation of the second wheel imparts rotational movement to the first wheel to cause the second cable end to move axially away from the first cable end until a preselected tension is applied to the cable upon which the second wheel freewheels relative to the first wheel.

Abstract: A bell lock wheel restraint system having an axle adapter to attach a bell to an axle, wherein the bell engages an outside face of a wheel away from a vehicle on which the wheel is mounted, and a bell retainer that secures the bell onto the axle adapter, thereby securing the wheel onto the vehicle in lieu of one or more failed lug bolts or lug nuts.

Abstract: A semi-trailer wheel restraint system having at least one bearing or swivel, or a combination of bearing(s) and swivel(s), and one or more cable sections and one or more hub cab attachments for receipt into one or more wheel assemblies and through a hollow core of the trailer's axle. During a wheel bearing failure, the wheel restraint system keeps the loose wheel assembly near the end of the axle by anchoring it to the opposite-end's hub cap, thereby preventing a run-away wheel assembly and providing an operator of the truck an opportunity to safely stop the rig.