US 9,809,066 B2
System for an air maintenance tire assembly
Cheng-Hsiung Lin, Hudson, OH (US)
Assigned to The Goodyear Tire & Rubber Company, Akron, OH (US)
Filed by The Goodyear Tire & Rubber Company, Akron, OH (US)
Filed on May 5, 2014, as Appl. No. 14/269,294.
Prior Publication US 2015/0314657 A1, Nov. 5, 2015
Int. Cl. B60C 23/12 (2006.01)
CPC B60C 23/12 (2013.01) 13 Claims
OG exemplary drawing
 
1. A pumping assembly for use with a pneumatic tire mounted on a tire rim to keep the pneumatic tire from becoming underinflated, the pumping assembly comprising:
a first pump having a first chamber and a second chamber, an outlet of the second chamber being connected to an inlet of a second pump, the first pump including a piston placed between the first chamber and the second chamber; and
a check valve being disposed between the second chamber of the first pump and the inlet of the second pump.