F - Mech Eng,Light,Heat,Weapons – 16 – L
Patent
F - Mech Eng,Light,Heat,Weapons
16
L
189/11
F16L 55/12 (2006.01) E21B 33/127 (2006.01) F16L 55/134 (2006.01)
Patent
CA 1177762
ABSTRACT Descriptive Summary A device for the temporary plugging of pipes, of the type consisting of a flexible sleeve (1) expandable under heavy internal pressure and -the rubber wall of which is reinforced by at least one pair of resistant layers (5) made of cables, embedded in the wall and the cables of which are woven from one layer into the other forming, with respect to the generatrices, angles smaller than 30°; a device characterized by the fact that the wall of the sleeve contains, in addition, at least one pair of protective layers (8) installed radially inside the resistant layers (5) and consisting of neighboring cables with a diameter at least twice as small as that of the cables of the resistant layers, the cables of the protective layers being woven from one layer into the other and forming with the generatrices angles not larger than the angles of the resistant cables.
403546
Schlumberger Technology Corporation
Smart & Biggar
LandOfFree
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