Pressure vessel valve housing

Claim 1

In combination a cylindrical pressure vessel having a valve on one end thereof, a housing for enclosing said valve, said housing comprising; a strap embracing the cylindrical pressure vessel and comprised of two semi-cylindrical parts pivoted together at one end and having mating radially-outwardly extending ears on their other ends, nut and bolt means for clamping said ears together, a shell comprised of first and second mating shell parts, the first of said shell parts being affixed to one of the strap parts and extending upwardly therefrom, the second of such shell parts being pivotally attached to the first shell parts so as to swing between closed and open positions whereby to enclose and expose the valve, the second of said shell parts having a projection rigid therewith and extending downward therefrom, said projection, in the closed position of said second shell part, being disposed in blocking position over the nut and bolt means such as to prevent unbolting thereof and in the open position of such second said shell part being disposed in unblocking position with respect to said nut and bolt means, and lock means for releasably holding said second shell part in said closed postion.