Wheel having a controlled pressure and a pressure reservoir

Details Wheel having a controlled pressure and a pressure reservoir Wheel having a controlled pressure and a pressure reservoir

2011-03-22

2011-03-22

Nguyen, Tai T (Department: 2612)

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

C340S444000, C340S447000, C340S448000, C152S331100, C152S415000, C152S418000, C152S509000, C152S519000, C073S146200, C073S146300, C073S146800

Reexamination Certificate

active

07911332

ABSTRACT:
A wheel having a controlled pressure includes a rim associated with a tank adapted to be filled with a fluid to a first pressure; a tire mounted on the rim and having an inner volume inflated to an operating pressure at a reference temperature, the operating pressure being lower than the first pressure; and at least one valve assembly adapted to establish a communication between the tank, the inner volume of the tire and the external environment. The valve assembly includes a command valve, an exhaust valve and a compensation valve operatively associated with each other. The command valve controls communication between the tank and the inner volume of the tire. The exhaust valve is connected to the external environment, to the inner volume, to the command valve and to the compensation valve. The compensation valve is connected to the exhaust valve and the command valve. The command valve includes an inner chamber connected with the exhaust valve and the compensation valve in such a manner that the command valve is operated by the exhaust valve and the compensation valve through a pressure variation of the inner chamber in response to a variation of the inner pressure of the tire.

REFERENCES:
patent: 3934223 (1976-01-01), Barabino
patent: 4067376 (1978-01-01), Barabino
patent: 5452753 (1995-09-01), Olney
patent: 5891278 (1999-04-01), Rivin
patent: 6533010 (2003-03-01), Alonso et al.
patent: 6601625 (2003-08-01), Rheinhardt
patent: 36 31 712 (1988-03-01), None
patent: 43 44 524 (1995-06-01), None
patent: 297 18 420 (1997-12-01), None

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