Self-locking union for pipes

Details Self-locking union for pipes Self-locking union for pipes

F - Mech Eng,Light,Heat,Weapons

16

L

F16L 19/00 (2006.01) F16L 19/07 (2006.01)

Patent

CA 2172725

Pipe coupling comprising a nut (2) cooperating with the thread joint (34) of one of the end pieces (1) by drawing against the latter a second endpiece (31) belonging to the other pipe. A movable locking member (4), biased by a spring (5), comprises a shaped portion (8), which in a locking position, fits onto a complementary shaped portion (9) of the nut, thereby preventing the latter from turning in relation to the endpiece (1) onto which it is screwed. The locking element (4) is slidingly mounted on a support member (3) which is fitted onto the first pipe (1) so as to extend about the thread joint (34), wherein a sufficient radial distance is maintained with the latter to allow for the passage of the nut (2). The invention is suitable for fitting, and even retrofitting, to standard couplings, especially of the nipple-nut type.

L'accouplement de canalisations comprend un écrou (2) venant sur un filetage (34) de l'un des embouts (1) en tirant contre celui-ci un deuxième embout (31) appartenant à l'autre canalisation. Une coupelle mobile de verouillage (4) sollicitée par un ressort (5), comporte une empreinte (8) venant, en position de verrouillage, s'emboîter sur une empreinte complémentaire (9) de l'écrou et empêcher celui-ci de tourner par rapport à l'embout (1) sur lequel il est vissé. L'organe de verrouillage (4) est monté coulissant sur un organe support (3) qui est rapporté sur la premicre canalisation (1) de manière à s'étendre autour du filetage (34) avec, par rapport à celui-ci, une distance radiale suffisante pour le passage dc l'écrou (2). Utilisation pour équiper les accouplements standards, notamment du type mammelon-écrou, même à posteriori.

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