F - Mech Eng,Light,Heat,Weapons – 16 – L
Patent
F - Mech Eng,Light,Heat,Weapons
16
L
F16L 55/00 (2006.01) B65D 90/10 (2006.01) F16J 13/12 (2006.01) F16L 55/115 (2006.01) F17D 1/00 (2006.01)
Patent
CA 2410290
Closure 10 includes a closure hub 12 for receiving a closure cap 30. A vessel end of the hub may be welded to a pressurized vessel or pipeline. A pulling device 20 may include a pivot member 26, a pulling lever 27, a pulling connector 28, and a flexible member 46. A pulling fever is connected by a connector pivot 23 to the pivot member, and the pulling connector is connected at a lever pivot 29 to the pulling lever. In the method of the invention, the pulling lever is pulled toward an anchor to thread or unthread the cap from the hub.
Smith Blake E.
White Billy W.
Finlayson & Singlehurst
Robbins & Myers Energy Systems L.p.
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