Vacuum demand flow valve

Fluid handling – With lock or seal – With seal

Reexamination Certificate

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Details

C137S510000, C137S907000

Reexamination Certificate

active

06863083

ABSTRACT:
A valve is disclosed for dispensing a flowable material. The valve has a first chamber (40) at a first pressure wherein said first chamber (40) defines an outlet (28) in communication with said first chamber (40). A second chamber (42) is at a second pressure. The valve has a stop (18) indexed against a third pressure, operating to selectively place the first chamber (40) into communication with the second chamber (42). The stop (18) is operative to connect the second chamber (42) to said first chamber (40) when the first pressure is less than the third pressure.

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Sample of a Source Vagabond Systems, Inc. valve submitted to Examiner Hepperle during a Sep. 10, 2002 interview.

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