An improved seal

Details An improved seal An improved seal

F - Mech Eng,Light,Heat,Weapons

16

J

F16J 15/20 (2006.01) E21B 33/00 (2006.01) F16J 15/32 (2006.01)

Patent

CA 2746721

A device to provide a seal between a housing(ll) for a moving element (10) such as a drill chain, piston or the like and the moving element. The device comprising a storage well (13) to retain seal material, the storage well having an outlet con-necting with an aperture in a housing enabling seal material to flow into the space between a housing and the moving element and form a seal, the device further including an inlet port (16) enabling seal material precursor to be added into the storage well, new-line pressurising means to pressurise the seal material precursor and force it out of the aperture.

L'invention concerne un dispositif pour former un joint amélioré entre un boîtier pour un élément mobile, tel qu'une chaîne de forage, un piston ou analogue, et l'élément mobile. Le dispositif comprend un puits de stockage pour retenir la matière de joint, le bloc comportant une sortie qui se connecte à une ouverture dans le boîtier, permettant à la matière de joint de s'écouler dans l'espace entre un boîtier et l'élément mobile, et de former un joint, le dispositif comprenant en outre un port d'entrée pour permettre l'ajout dans les blocs d'un précurseur de matière de joint, et des moyens de pressurisation en nouvelle ligne pour pressuriser le précurseur de matière de joint et forcer celui-ci à sortir par l'ouverture.

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