F - Mech Eng,Light,Heat,Weapons – 16 – L
Patent
F - Mech Eng,Light,Heat,Weapons
16
L
189/12
F16L 55/18 (2006.01) B08B 9/02 (2006.01) F16L 45/00 (2006.01) F16L 55/134 (2006.01) F16L 55/16 (2006.01)
Patent
CA 1171004
ABSTRACT INFLATABLE PLUG FOR INTERIORLY CYLINDRICAL CONDUITS A fluid inflatable plug 10 for interiorly cylindrical conduits includes a rigid cylindrical mandrel 12 having an elastomeric tubular sleeve 14 about the outer curved surface 16 of the mandrel 12. The sleeve 14 includes reinforcements 15 which extend in opposite sense helical paths throughout the longitudinal extent of the sleeve. The sleeve 14 is folded back over one of its ends 19 to form a loop region 20 upon assembly to the mandrel 12. The ends 18,19 of the sleeve 14 are sealingly retained e.g. by clamp rings 22) to the outer surface 15 of the mandrel 12. Means 26,27 are provided for admitting and exhausting pressurized fluid between the sleeve 14 and the outer curved surface 16 of the mandrel 120 The plug 10 may include a fluid passage 32,34 therethrough independent of the means for admitting and exhausting pressurized fluid between the sleeve and the surface of the mandrel.
391027
Burkley Thomas E.
Kifor Harry T.
Sim & Mcburney
The Goodyear Tire & Rubber Company
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