A tire inflation system and method for a tire supported by a wheel, the tire inflation system including a pump system including a pump cavity configured to fluidly connect to the tire, an actuating element configured to actuate relative the pump cavity, a drive mechanism rotatably coupled to the wheel, the drive mechanism including a motion transformer and an eccentric mass, a valve fluidly connecting the pump cavity to a fluid reservoir; and a control system configured to operate the valve.

The system can include: a wheel-mounted pump and a dehumidifying system arranged along the fluid path between the pump outlet and a tire inlet. In variants, the dehumidifying system includes a set of angled channels that aggregate water in radially-outward channel segments. The angled channels can be fluidly connected to a purge valve selectively fluidly connected to an ambient environment.

A tire inflation system and method for a tire supported by a wheel, the tire inflation system including a pump system including a pump cavity configured to fluidly connect to the tire, an actuating element configured to actuate relative the pump cavity, a drive mechanism rotatably coupled to the wheel, the drive mechanism including a motion transformer and an eccentric mass, a valve fluidly connecting the pump cavity to a fluid reservoir; and a control system configured to operate the valve.

A wheel hub assembly of a bicycle wheel is disclosed that include a wheel axle, a rotary pump that may be composed of a pump housing, a pump rotor, a first fluid port configured for fluidly coupling to a pneumatic tire and a second fluid port configured for fluidly coupling to a fluid reservoir. The assembly allows for conveniently and efficiently modifying the tire pressure in bicycles at will while riding, in as many cycles as desired and without contaminating the air inside the tires.

An automotive tire inflation device is provided, including an electric inflation module, a fixing module, a power supply module, a sensing module, a control module, and a data transmission module. In the present disclosure, it is possible to inflate the tire while in motion, avoiding the driver from stopping for a long time to replace the spare tire or inflate. The fixing device can adjust the fixed position. Inflation can be started and stopped automatically. The inflation would stop when the tire is full, without the need for the driver to manually separate the inflating device. In addition, an alarm can be generated for abnormal situations, and all data and alarm information can be transmitted back to the cabin, timely, drivers can refer to the corresponding information to choose manual control or parking for maintenance.

A tire inflation system having a peristaltic pump. The peristaltic pump may output a pressurized gas when a flexible tube of the peristaltic pump rotates with a wheel end assembly about an axis.

A hub-integrated inflation system which functions to convert relative motion at the wheel end (e.g., between the axle and the hub or wheel) into a pumping motion. The relative motion is then converted into mechanical or electrical energy, which can be used to actuate a pump of an inflator.

A device (10) is disclosed for providing air to a tire which is mounted on a wheel rim which itself is free to rotate about a fixed, that is, non-rotatable axle 22. The device includes a pump (50, 52, 54, 62) which in use rotates with the tire and which is configured to provide, when activated, air under pressure to the tire. There is a pump drive system for activating the pump. The pump drive system comprising a piston rod (56) which is connected to and rotates with the tire and a body (40) which rotates in unison with the rod (56) while the pump is inactive. An electric motor (68) rotates the body (40) with respect to the rod (56) to activate the pump and provide air to the tire. Rotation of the body (40) is superimposed on rotation of the pump with the tire. The device also includes a stator component (26) and coils (30) and magnets (32) for generating, by electrical induction, power for driving the motor using the relative rotation between the second part and the stator component (26).

A wheel hub arrangement having a wheel hub for mounting a rim with an inflated tire. The wheel hub arrangement has a rotary piston compressor mounted rotatably on the wheel hub. The wheel hub arrangement has a switchable mechanical coupling device, by way of which the rotary piston compressor can be switched over between a compression mode, in which the rotary piston compressor can be actuated by way of a rotational movement relative to the mounted rim or the wheel hub, and a rest mode, in which it is passive and does not produce any compressed air on the outlet side, and the rotary piston compressor producing compressed air on the outlet side for filling the tire in the compression mode.

A system for tire inflation including a drive mechanism defining a rotational axis, including an eccentric mass that offsets a center of mass of the drive mechanism from the rotational axis along a radial vector; a pump arranged radially distal the rotational axis of the drive mechanism, including a chamber defining a chamber lumen, and a reciprocating element arranged at least partially within the chamber lumen and translatable along a pump axis; a drive coupler coupled between the drive mechanism at a first position and the reciprocating element at a second position fixed to the reciprocating element; a torque regulation mechanism; and a controller, communicatively coupled to the torque regulation mechanism; wherein the system is operable between at least a first mode and a second mode by the torque regulation mechanism in cooperation with the controller.