F - Mech Eng,Light,Heat,Weapons – 16 – K
Patent
F - Mech Eng,Light,Heat,Weapons
16
K
F16K 17/38 (2006.01) F16K 31/52 (2006.01)
Patent
CA 2281989
A device works as an emergency shut off for a valve having an open and a closed position with a lever for manually moving the valve from one of the positions to the other. The device has a mounting locus in fixed position relative to the valve, a tension member having a first end, a second end and an intermediate portion therebetween, the first end being affixed to the lever and the intermediate portion passing through the mounting locus; a sleeve member slidingly fitted along the tension member, the sleeve member having a first spring retainer firmly fixed thereto along its length and a second spring retainer slidingly received on the sleeve member and coupled thereto by a portion of a releasable adhesive agent; a helical spring for biasing, mounted along an external surface of the sleeve member in a longitudinally compressed manner between the first and second spring retainers; and a first cable stop affixed to the tension member, the sleeve member being constrained between the mounting locus and the first cable stop. When a release agent, such as heat, decouples the second spring retainer from the sleeve member by releasing the releasable adhesive agent, such as a solder, the spring restores to an uncompressed length, effectively moving the first and second spring retainers apart and translating the tension member a sufficient amount to move the valve from one position to the other position. In addition to this automatic action of the device, the valve may be manually moved from one position to the other by a pull on the tension member.
Betts Industries Inc.
Deeth Williams Wall Llp
LandOfFree
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