Fluid handling – Control by change of position or inertia of system
Reexamination Certificate
2005-08-09
2005-08-09
Chambers, A. Michael (Department: 3753)
Fluid handling
Control by change of position or inertia of system
C137S039000, C251S074000, C251S303000
Reexamination Certificate
active
06926025
ABSTRACT:
A vertical shock responsive fluid valve assembly capable of automatically closing a fluid valve in response to earthquake forces or other shock forces of a predetermined magnitude. The vertical shock responsive valve assembly has a flow control mechanism having a cradle that holds a movable ball in a recess at a point perpendicular in relation to a horizontal base plate, where the ball can be rotated 360° in any direction during seismic actions or other shock forces and rolls out of its recess at a predetermined force such that it ricochets off a housing cover covering the cradle and pushes a trip fork mechanism having elongated walls to provide additional leverage when the force strikes the trip fork mechanism that is mounted on a pivoting mechanism, thereby releasing a swing arm which has a disc on the end that functions as a plug for the hole in the valve body to interrupt gas or fluid flow therein.
REFERENCES:
patent: 4185507 (1980-01-01), Domyan
patent: 4513629 (1985-04-01), Keller et al.
patent: 4603591 (1986-08-01), Sibley et al.
patent: 4782848 (1988-11-01), Sibley et al.
patent: 4915122 (1990-04-01), Ikegaya et al.
Christensen, Sr. Richard F.
Keller William F.
Sibley Richard D.
Chambers A. Michael
Chen Tony D.
Pacific Seismic Products, Inc.
Rozsa Thomas I.
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