F - Mech Eng,Light,Heat,Weapons – 16 – L
Patent
F - Mech Eng,Light,Heat,Weapons
16
L
189/5
F16L 55/10 (2006.01) F16L 55/11 (2006.01)
Patent
CA 2007371
A safety connection for connecting a plug into a tubular member such as in a passage of a choke or valve body, the tubular member having a threaded port extending into the interior of the passage, a plug body positioned within said passage and having an external groove being aligned with the opening of the port into the interior of the passage, a threaded plug positioned within said port, and having an inner end engaging within the external groove in the plug body, sealing means between said plug body and the interior of said passage, means for sealing between the interior of said threaded plug and the threaded port, a vent opening extending through said threaded port and being sealed by the seating of said threaded plug in said threaded port, the partial unthreading of said threaded plug outwardly in said threaded port opening the vent opening for venting pressure from within the tubular member while maintaining the inner end of the threaded plug in engagement with the groove in the plug body to retain it in its seated position with the tubular member.
Cette invention concerne un raccord de sécurité pour bouchon d'élément tubulaire tel que passage d'étranglement ou de robinet, l'élément tubulaire comportant un orifice taraudé débouchant dans le passage susmentionné. Un bouchon lisse servant à obturer le passage de l'élément tubulaire comporte une rainure annulaire alignée sur l'orifice taraudé ci-dessus dans lequel se visse un autre bouchon dont le bout libre se loge dans ladite rainure. Le bouchon fileté est muni d'un moyen destiné à assurer une fermeture étanche du passage obturé lorsqu'il est vissé à fond et d'un évent de mise à l'air libre percé dans son corps, évent qui s'ouvre au dévissage partiel pour évacuer la pression qui règne dans l'élément tubulaire. Au dévissage partiel du bouchon fileté pour la mise à l'air libre, son bout libre demeure logé dans la rainure annulaire du bouchon lisse pour retenir celui-ci en position de fermeture étanche de l'élément tubulaire.
Cooper Cameron Corporation
Smart & Biggar
LandOfFree
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