Pump assembly for wheel
AssigneeThe Goodyear Tire & Rubber Company
InventorCheng-Hsiung Lin
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Abstract
A pumping mechanism in accordance with the present invention is used with a pneumatic tire mounted on a wheel to keep the pneumatic tire from becoming underinflated. The pumping mechanism includes a frame having a first chamber and a pump chamber, a strike plate positioned in the first chamber and being connected to a plunger plate, said plunger plate having a nose for engagement with a diaphragm mounted in the pump chamber; said pump chamber being in fluid communication with a pump inlet and a pump outlet; wherein actuation of the strike plate in the first chamber causes engagement of the nose with the diaphragm. Preferably the strike plate is actuated by a permanent magnet mounted on a stationary part, or the strike plate is actuated by an electrically driven magnet.
Claims15
A pump mechanism for mounting on a wheel to keep a pneumatic tire from becoming underinflated, the pump mechanism comprising:
- a frame having a first chamber and a pump chamber;
- said pump chamber being in fluid communication with a pump inlet and a pump outlet;
- a strike plate positioned in the first chamber and being connected to a plunger plate by one or more guide rails;
- said plunger plate having a nose for engagement with a diaphragm forming a wall of the pump chamber;
- wherein a spring is positioned between the plunger plate and the frame for biasing the plunger plate away from the frame;
- and
- wherein actuation of the strike plate in the first chamber causes engagement of the nose with the diaphragm.
Dependencies are inferred from the claim text.