Passive pressure activation valve

Details Passive pressure activation valve Passive pressure activation valve

2007-10-24

2009-06-09

Rivell, John (Department: 3753)

Fluid handling

With liquid valves or liquid trap seals

Liquid valves

C123S520000

Reexamination Certificate

active

07543601

ABSTRACT:
A valve apparatus includes a housing, which defines an interior chamber, a baffle disposed in the interior chamber, and a volume of liquid. The housing includes first, second and third portions. The first portion includes first and second ports that communicate with the interior chamber. The second portion is spaced from the first portion along a longitudinal axis. And the third portion extends along the longitudinal axis between the first and second portions. The baffle at least partially defines a helical fluid flow path between the first and second ports, and the volume of the liquid is disposed in the second portion of the housing.

REFERENCES:
patent: 2020563 (1935-11-01), Moore
patent: 2418381 (1947-04-01), Wegmann
patent: 2636507 (1953-04-01), Houghland
patent: 4222405 (1980-09-01), Rosenblad
patent: 6889669 (2005-05-01), Perry et al.
patent: 7302964 (2007-12-01), Perry et al.
patent: 2004/0134535 (2004-07-01), Mitchell

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