US 6,981,612 B2 | ||
Tamper-proof gas pin valve | ||
Thomas S. Siimes, Windsor (Canada); and Timo Siimes, Windor (Canada) | ||
Assigned to Gas Cylinder Technologies, Lake Shore (Canada) | ||
Filed on Dec. 19, 2003, as Appl. No. 10/741,943. | ||
Claims priority of provisional application 60/435210, filed on Dec. 19, 2002. | ||
Prior Publication US 2004/0183043 A1, Sep. 23, 2004 | ||
Int. Cl. F16K 1/00 (2006.01) |
U.S. Cl. 222—3 | 18 Claims |
1. A valve assembly comprising:
a housing defining a first bore comprising an inlet and an outlet;
a piston movable within said bore between an open and closed position, wherein said piston comprises a pin section extending
through said outlet;
a spring biasing said piston toward said closed position; and
an insert securable within said first bore by at least one barb, said spring disposed between said piston and said insert.
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