US 11,719,341 B2
Vessel closure device with fail safe failure detection means
Joshua D. Mitchell, Broken Arrow, OK (US); William C. Keenan, Broken Arrow, OK (US); William J. Tefft, Claremore, OK (US); Joseph Alan Morton, Tulsa, OK (US); Aaron M. Ritchie, Tulsa, OK (US); Robert Fulton Hendricks, Tulsa, OK (US); and Samuel R. Boehning, Tulsa, OK (US)
Assigned to TDW Delaware, Inc., Wilmington, DE (US)
Filed by TDW Delaware, Inc., Wilmington, DE (US)
Filed on Jun. 5, 2019, as Appl. No. 16/432,144.
Claims priority of provisional application 62/680,801, filed on Jun. 5, 2018.
Prior Publication US 2019/0366289 A1, Dec. 5, 2019
Int. Cl. F16J 13/24 (2006.01); F16L 55/115 (2006.01); F16J 13/06 (2006.01)
CPC F16J 13/24 (2013.01) [F16J 13/065 (2013.01); F16L 55/115 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A closure [10] for a cylindrical vessel, the closure comprising:
a pair of clamp rings [31] having a predetermined actuation force above the weight of the pair of clamp rings;
a pressure warning lock hole [19]; and
a block [40] connected to the pair of clamp rings and sized to at least partially overlap the pressure warning lock hole when the pair of clamp rings is in a fully open state and to fully expose the pressure warning lock hole when the pair of clamp rings is in a fully closed state.