Valve assembly

Fluid handling – Line condition change responsive valves – Pilot or servo controlled

Reexamination Certificate

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Details

C137S115230, C137S454500, C251S360000

Reexamination Certificate

active

07017605

ABSTRACT:
A valve assembly (112) includes a first member (120) having a cavity (136). A poppet (142) is located in the cavity (136) in the first member (120). The poppet (142) is axially movable relative to the first member (120) within the cavity (136). A poppet seat (138) has a passage (148) for conducting fluid toward the cavity (136). The poppet seat (138) engages the first member (120) and extends axially into the cavity (136) in the first member. The poppet seat (138) is axially movable relative to the first member (120). The poppet (142) is biased into engagement with the poppet seat (138) to close the passage (148) in the poppet seat. A locking member (172) engages the poppet seat (138) and the first member (120) to fix the poppet seat to the first member in any one of a plurality of axial positions relative to the first member.

REFERENCES:
patent: 2587161 (1952-02-01), Huber
patent: 3608580 (1971-09-01), Hohmann et al.
patent: 4248265 (1981-02-01), Freeman, Jr.
patent: 4768605 (1988-09-01), Miller et al.
patent: 4811756 (1989-03-01), Hall
patent: 5170818 (1992-12-01), Hatzikazakis
patent: 5378118 (1995-01-01), Phillips
patent: 5460198 (1995-10-01), Kortge
patent: 5496155 (1996-03-01), Noah et al.
patent: 5613516 (1997-03-01), Landrum
patent: 6182363 (2001-02-01), Venable
patent: 6209577 (2001-04-01), Lai et al.

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