Patent ID: 8800586

Claim:
A fluid coupling adapted for connection between a fluid source and a fluid destination, said fluid coupling comprising: a fluid conduit having: (a) a first end having a plurality of through holes, and (b) a second end; a first housing adapted for connection to a fluid source and having: (a) a first fluid opening through which fluid from the fluid source enters said first housing, (b) a second fluid opening through which fluid from the fluid source leaves said first housing and enters said fluid conduit, (c) a cavity between said first fluid opening in said first housing and said second fluid opening in said first housing, and (d) an end having a plurality of through holes aligned with said through holes in said first end of said conduit; a second housing adapted for connection to a fluid destination and having: (a) a first fluid opening through which: (1) fluid from the fluid source leaves said fluid conduit and enters said second housing, and (2) fluid from the fluid destination tends to leave said second housing and enter said fluid conduit during a failure of said fluid conduit unit, (b) a second fluid opening through which: (1) fluid from the fluid source leaves said second housing and enters the fluid destination, and (2) fluid from the fluid destination tends to enter said fluid conduit during a failure of said hose unit, and (c) a cavity between said first fluid opening in said second housing and said second fluid opening in said second housing; a coupling connecting said first housing to said first end of said fluid conduit and including a plurality of breakable bolts extending through and secured in said aligned through holes in said end of said first housing and said through holes in said first end of said fluid conduit that break when a predetermined force is applied to said breakable bolts that causes parts of said breakable bolts to separate; a first valve seat at said second fluid opening in said first housing; a second valve seat at said first fluid opening in said second housing; a first valve body in said cavity of said first housing and movable between; (a) a first position spaced from said first valve seat to permit flow of the fluid from the fluid source through said first housing, and (b) a second position against said first valve seat to prevent fluid leaving said first housing; a second valve body in said cavity of said second housing and movable between: (a) a first position spaced from said second valve seat to permit flow of the fluid from the fluid source through said second housing, and (b) a second position against said second valve seat to prevent fluid from the fluid destination leaving said second housing; and valve control means for: (a) retaining said first valve body in its first position and said second valve body in its first position, and (b) selectively urging said first valve body to its second position and said second valve body to its second position in response to breakage of said coupling and separation of said parts of said coupling.