Patent ID: 8286829

Claim:
A security closure-cap device for closing off the outlet connection of a storage tank, the storage tank being provided with an outlet, comprising: a first outlet component connectable to an outlet connection of a storage tank, said first component being one of a male and female component; a second closure-cap component connectable to said first outlet component, said second component being the other of a male and female component; said first outlet component comprising a main body portion having first end defining a connecting section for connection to the outlet connection of a storage tank, and a second end distal from the first end, a mounting flange at said first end for mounting said first outlet component to a wall, and a projecting securing element defining a first end and a second end, and having a through-opening formed therein; said second closure-cap component comprising a main body section for cooperating with said main body portion of said first outlet component; said main body section comprising a first end and a second substantially closed end for forming a closure cap proper, and a securing-element receiving portion through which passes a portion of said projecting securing element; said second closure-cap component further comprising a bifurcated partition element defining a pair of walls between which walls extends said portion of said projecting securing element, with said through-opening thereof being located between said pair of walls, whereby a locking device having a shaft may pass through said through-opening, with said pair of walls preventing access to the shaft of the locking device by a cutting instrument, whereby when said first and second components are connected together to close off the outlet of a storage tank, the locking device securing together said first and second components is substantially tamper-proof; said securing element being a tongue projecting from a peripheral portion of said mounting flange; said bifurcated partition element of said second component extending from said main body section in a direction toward said peripheral portion of said mounting flange when said first and second components are connected together; said securing-element receiving portion through which passes a portion of said projecting securing element comprising aligned through- slots formed in said bifurcated walls of said bifurcated partition element.