Breakaway coupling

Details Breakaway coupling Breakaway coupling

1991-05-28

1992-08-25

Rivell, John

Fluid handling

Destructible or deformable element controlled

Destructible element

13761404, 285 2, 285 4, 403 2, F16K 1740, F16L 3732

Patent

active

051410141

ABSTRACT:
A breakaway coupling for joining two hoses includes a main body and an end body which are telescopically connected. A frangible link holds the two parts together. The link is inserted in a recess formed in a surface of the coupling which spans the junction of the bodies. The link is subject only to tensile forces and is formed to break at across the center of the link, where the two bodies abut each other. Each body includes a check valve. When the two bodies are connected, the valves urge against one another to open the valves. The urging of the valves against one another also exerts a tensile force on the link to hold it in its recess. A spacer separates the valves so that high pressure flow will not close the upstream valve.

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patent: 4899786 (1990-02-01), Morris et al.
patent: 4921000 (1990-05-01), King et al.

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