Air fitting with an integral check valve

Details Air fitting with an integral check valve Air fitting with an integral check valve

2008-04-08

2008-04-08

Kirshnamurthy, Ramesh (Department: 3753)

Fluid handling

Line condition change responsive valves

Direct response valves

C137S533190, C137S538000, C251S337000

Reexamination Certificate

active

07353842

ABSTRACT:
An air fitting with an integral check valve includes a housing having an inlet and at least one outlet, a passage extending between the inlet and the at least one outlet with a valve seat being formed in the passage adjacent the at least one outlet with a portion between the outlet and the valve having a plurality of channels separated by lands which form a guide surface for the valve as it is being forced onto the valve seat by a spring. The channels allow passage of air around the valve member with less restriction when the valve member is lifted off the valve seat.

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patent: 6227240 (2001-05-01), Wu et al.
patent: 6631929 (2003-10-01), Pickering

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