F - Mech Eng,Light,Heat,Weapons – 16 – L
Patent
F - Mech Eng,Light,Heat,Weapons
16
L
189/4
F16L 57/00 (2006.01) E21B 17/00 (2006.01)
Patent
CA 1086246
ABSTRACT OF THE DISCLOSURE A sealing cover is provided for preventing ingross of water and other foreign matter between the inter-engaging screw-threads of a stored drilling rig casing pipe element which is fitted either internally or externally with a screw-threaded nipple which engages with the screw-thread on the pipe element and projects beyond the end of the pipe element to protect the screw-thread of the pipe element from damage by impact. The sealing cover comprises an annular collar which provides an abutment for the outer end of the nipple, a cylindrical sleeve portion having first and second ends which are respectively formed integral with the collar and capable of sealing engagement with the pipe element or the nipple so as to enclose the outer end of the pipe element, a circular portion for insertion into the pipe element and the nipple, and a tubular portion which extends between the collar and the periphery of the circular portion and is frictionally engageable with the inner member of the pipe element and the nipple, to seal the junction between the outer end of the pipe and the nipple. The first end of the cylindrical sleeve portion of the sealing cover is preferably detachably connected to the remainder of the sealing cover and is provided with two axially extending, circumferential grooves the inner of which provides the second part of the cylindrical sleeve portion with radial resilience and the outer of which is formed for deformable locking engagement with the free end of the remainder of the cylindrical sleeve portion.
303620
Flimon Hugues J.
Marks & Clerk
LandOfFree
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