A SYSTEM AND METHOD FOR AN AIR MAINTENANCE TIRE ASSEMBLY

A system is disclosed for use with a pneumatic tire mounted on a wheel rim to keep a tire cavity of the pneumatic tire from becoming underinflated from a set pressure. The system comprises a plurality of pumps (18) attached circumferentially to a wheel rim, each pump (18) having a piston (16) for in...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	GAU, Jin-Shy Steve, LIN, Cheng-Hsiung
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	DEVICES OR ARRANGEMENTS RELATED TO TYRES PERFORMING OPERATIONS REPAIRING, OR CONNECTING VALVES TO, INFLATABLE ELASTIC BODIESIN GENERAL TRANSPORTING TYRE CHANGING OR REPAIRING TYRE INFLATION VEHICLE TYRES VEHICLES IN GENERAL
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Beschreibung
Zusammenfassung:	A system is disclosed for use with a pneumatic tire mounted on a wheel rim to keep a tire cavity of the pneumatic tire from becoming underinflated from a set pressure. The system comprises a plurality of pumps (18) attached circumferentially to a wheel rim, each pump (18) having a piston (16) for inflating the tire cavity and a weight (201) for moving the piston (16); and a stop mechanism (200) for each pump (18), the stop mechanism (200) including a stop piston (210), a stop cylinder (220), a first spring (230), and a second spring (240). When air pressure in the tire cavity reaches a set pressure, the set pressure overcomes a force of the first spring (230) against the stop piston (210) and moves the stop piston (210) into a stopping engagement with the weight (201). When air pressure in the tire cavity is below the set pressure, the second spring (240) overcomes the force of the first spring (230) and moves the stop piston (210) away from the weight (201).