Inflation valve having over pressure protection

Details Inflation valve having over pressure protection Inflation valve having over pressure protection

1997-08-25

1999-09-21

Fox, John

Fluid handling

Destructible or deformable element controlled

Destructible element

137223, F16K 1716

Patent

active

059540818

ABSTRACT:
An inflation valve having overpressure protection has an inflation core which is coaxial with an exhaust port, both of which are coaxial with an exhaust plenum maintained within a body portion of the inflation valve. The inflation core communicates with a circular chamber which also communicates with radial passages extending within the base portion to an annular chamber which communicates with radial passages which interconnect with the wheel entry port. The exhaust plenum is sealed from the wheel entry port and the pressure of the associated tire by a rupture disk. Exhaust ports extend through the body portion of the valve from the exhaust plenum to atmosphere. When an overpressure condition exists within the tire, exceeding the characteristic pressure of the rupture disk, the rupture disk opens and allows the pressure within the tire envelope to escape through the wheel entry port, exhaust plenum, and exhaust ports. An elastomeric band or sleeve is received about the body portion 12 and over the exhaust port to seal them from dirt and the ambient until such time that the band is blown away or otherwise disturbed when the rupture disk opens on an overpressure condition.

REFERENCES:
patent: 3404698 (1968-10-01), Rouse
patent: 3834412 (1974-09-01), Fanvin
patent: 4365643 (1982-12-01), Marclet et al.
patent: 5197718 (1993-03-01), Wallis

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