B - Operations – Transporting – 65 – D
Patent
B - Operations, Transporting
65
D
B65D 90/26 (2006.01) B65D 90/34 (2006.01) F16K 24/04 (2006.01) F16K 31/18 (2006.01)
Patent
CA 2487572
The present invention is a spill containment apparatus that may be mounted to the vent pipe of a liquid storage tank. The apparatus comprises a canister forming a reservoir for receiving liquid overflowing through the tank vent. If the overflow volume does not exceed the reservoir capacity, the liquid in the reservoir drains back into the tank when the tank is drawn down. If the overflow volume exceeds the reservoir capacity, the excess liquid is diverted through a canister outlet to a collection receptacle. In either event, the overflowing liquid never contacts or contaminates the exterior surfaces of the tank roof and walls, or the fill or natural soil in the vicinity of the tank. A canister vent that allows passage of vapours from the tank to the atmosphere during non- overflow conditions. If an overflow floods the canister, a check valve closes off the canister vent, thus preventing spillage through the canister vent.
Crichton Brian
Tomkins Donald V.
LandOfFree
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