VEHICLE PNEUMATIC WHEEL INFLATION SYSTEM Russian patent published in 2023 - IPC B60C23/12 F04B9/04 

FIELD: tires.

SUBSTANCE: system includes a base plate (14) configured to be rigidly attached to the vehicle suspension elements, and an air pump configured to be rigidly attached to the rim of a vehicle wheel. The pump includes a piston (10) dividing the pump cavity into a cavity (4) under the piston and a cavity (9) above the piston, rigidly connected to the rod (3) and made with the possibility of reciprocating movement, counteracting the elastic force of the return spring (7). A roller housing (12) is attached to the pump rod (3), to which a roller (13) is attached by means of a bearing connection, made with the possibility in the working position of the rod (3) to rest on the base plate (14) during rotation of the vehicle wheel on which the specified pumping system, and by means of the rod (3) move the piston (10) inside the pump to increase the pressure in the cavity (9) above the piston. The pump contains an inlet valve (5) configured to connect the cavity (9) above the piston with the atmosphere when the pressure in the cavity (9) above the piston is less than atmospheric, and an exhaust valve (8) configured to connect the cavity (9) above the piston with the cavity of the wheel of the vehicle, on which the specified pumping system is installed, when the pressure in the cavity of the wheel is less than the pressure in the cavity (9) above the piston. The cavity (4) under the piston is configured to communicate with the cavity of the vehicle wheel when the specified pumping system is installed on it so that when the working pressure in the wheel cavity is reached, the piston (10) moves the rod (3) to the non-working position of the rod (3).

EFFECT: maintenance of constant tire pressure.

1 cl, 1 dwg