Coupling

Details Coupling Coupling

F - Mech Eng,Light,Heat,Weapons

16

L

189/16

F16L 5/00 (2006.01) F16L 5/02 (2006.01) F16L 5/04 (2006.01)

Patent

CA 1212907

ABSTRACT OF THE DISCLOSURE An improved coupling (10) to be embedded in concrete (101) is described. The coupling includes multiple concentric rings (11c) on an outside wall (11a) of a tube (11) which aid in preventing leakage along the outside wall and which help in providing fire retardancy. The coupling includes a step form (14) having a regular diameter which aids in positioning the coupling using a template (105).

455360

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