A safety valve replaces a tire valve. The valve includes a generally elongate hollow main body having an upper portion, a lower flex hose connector, a side tubular branch having a valve seat with a ball valve, an electronics housing having a battery, motor and a drive pin for the ball valve. The lower flex hose connector is adapted for connection to a flex hose or valve stem of the vehicle tire. The side branch branches from the main body and communicates with the hollow interior of the main body. The side branch has a plurality of air exit apertures at its periphery. The valve seat includes a base with an aperture therein through which the drive pin can extend through to engage the ball valve. The ball valve sits in the base and is biased in the valve seat via a spring to cover the aperture.

The invention provides an automatic constant pressure device for a hub tire system. The device comprises a valve nozzle, air pipes, valves, a pneumatic slip ring, a hub, a pressure relief valve, a tire, a main shaft, an air storage tank, a vehicle-mounted air source and the like. Two valve holes are machined in the hub of the device. The valve nozzle with a tire pressure sensor is installed at one valve hole, and the pressure relief valve is installed at the other valve hole. The tire pressure is detected by the tire pressure sensor. The valve is controlled to inflate through the valve nozzle, and the pressure relief valve is controlled to relieve the pressure. The device has the characteristics of scientific detection principle, simple and reasonable structure and the like.

A central tire inflation system configured to monitor and maintain an air pressure on the tires of a vehicle includes a housing, a central processing unit, a controller, and a valve. The housing has a plurality of walls and a bottom forming an interior volume. The central processing unit has the necessary electronics to receive, store, transmit and manipulate data. The controller has a plurality of modes of operation wherein the modes of operation include default parameters for air pressure within the tires of the vehicle. The valve is configured to direct air flow as required into or out of the tires, the valve being operably coupled to the controller. The central tire inflation system is configured to monitor air pressure of the tires and provide inflation or deflation thereof based the mode of operation.

An outboard wheel half has an axis and includes an outboard wheel structure configured to receive at least a portion of a tire. The outboard wheel half also includes a structure defining an alignment hole usable to align a hubcap relative to the structure. The structure defines a pocket circumferentially aligned with the alignment hole to reduce an amount of stress at a location of the alignment hole.

A central tire inflation system that is operably coupled to a vehicle wherein the system is operable to monitor and control the tire air pressure of the vehicle. The central tire inflation system includes a wheel assembly that includes a housing having an annular central portion with opposing arm members extending outward therefrom. The annular central portion includes an interior volume having a valve and a bearing/cap assembly. A controller is further provided wherein the controller includes a central processing unit. A valve is disposed within the controller and is operably coupled to three ports wherein a first port provides a fluid connection to the wheel assembly. The central tire inflation system further includes a control panel having a graphical display operable to provide a user interface for operation of the central tire inflation system. A plurality of operational modes are provide for selection by a user.

An assembly for a tire pressure management system includes a housing. The housing includes a first branch and a second branch. The second branch is oriented at an oblique angle with respect to the first branch. The first branch and the second branch are in fluid communication with each other and a main branch. The main branch is rotatable with respect to the first branch. A valve assembly is housed within the first branch. The valve assembly provides selective fluid communication between a portion of the tire pressure management system and the main branch. A pressure relief valve assembly is housed within the second branch. The pressure relief valve assembly provides selective fluid communication between the assembly and the atmosphere.

A self-inflating tire is provided that includes a pneumatic tire having a tread, and a casing, where the tread includes an outer riding surface, wherein the casing includes an inner inflation surface, and an elastic inflation lumen disposed between the casing and the tread, where the inflation lumen has at least one air through-port.

The invention provides an automatic constant pressure device for a hub tire system. The device comprises a valve nozzle, air pipes, valves, a pneumatic slip ring, a hub, a pressure relief valve, a tire, a main shaft, an air storage tank, a vehicle-mounted air source and the like. Two valve holes are machined in the hub of the device. The valve nozzle with a tire pressure sensor is installed at one valve hole, and the pressure relief valve is installed at the other valve hole. The tire pressure is detected by the tire pressure sensor. The valve is controlled to inflate through the valve nozzle, and the pressure relief valve is controlled to relieve the pressure. The device has the characteristics of scientific detection principle, simple and reasonable structure and the like.

A pneumatically operated gas valve mounted on a vessel containing pressurized gas. The gas valve includes a piston positioned in a cylinder with one closed end so that the piston seats against a gas outlet to close the gas valve. A control reservoir is formed in the cylinder between the piston and the closed end of the cylinder. Upon filling vessel, some of the pressurized gas enters the control reservoir to provide a control pressure behind the piston. Actuating the control mechanism vents the control reservoir, resulting in the gas valve opening rapidly to release the pressurized gas in the vessel through an exhaust port of the gas valve.

A tire inflation system safety valve includes at least an air line disposed between a rotary union and a tire communicating with an axle supporting a hubcap, the rotary union axially aligned with the axle and mounted to the hubcap. The air line facilitating pressurized air transferred between the rotary union and the tire. The tire inflation system safety valve including at least a valve housing providing a valve activation chamber, a fluid conduit, supported by the valve housing, having a downstream end and an upstream end and in fluid communication with the valve activation chamber, and a diaphragm disposed within the valve activation chamber and communicating with the fluid conduit. The diaphragm, in response to the pressurized air of a predetermined pressure, automatically precludes air transfer between the upstream end of the fluid conduit and the downstream end of the fluid conduit.