Sealing plug for blind installation

F - Mech Eng,Light,Heat,Weapons – 16 – L

Patent

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Details

F16L 55/11 (2006.01) F16B 13/06 (2006.01) F16B 19/10 (2006.01) F16L 55/128 (2006.01) F16L 55/13 (2006.01)

Patent

CA 2464439

A sealing plug for blind installation in a suitable hole thereby to plug and seal the hole, which sealing plug has a sleeve (1); a stem (2) having a head at least part of which is radially enlarged with respect to the remainder of the stem (2); the stem head (4) having a shoulder, the shoulder being provided with an annular protrusion (9); the stem (2) protruding from one end of the sleeve (1), and the annular protrusion (9) abutting the other end of the sleeve (1); the stem head (4) being of a material which is harder than that of the sleeve (1) and being formed with a weakened portion (3) intermediate the head (4) and the part of the stem remote therefrom; whereby, when the sealing plug is inserted in a suitable hole, with the sleeve (1) entirely within the hole, and increasing force is applied to the stem (2) with respect to the sleeve (1), axial compression is applied by the shoulder to the sleeve material abutting it, thereby causing the annular protrusion (9) on the stem head (4) to embed into the sleeve (1), and the sleeve to deform and expand radially to engage with the wall of the hole, and thereafter the stem (2) breaks at the weakened portion so that the head (4) remains in the sleeve (1).

L'invention porte sur un bouchon d'étanchéité d'une installation borgne dans un trou approprié destiné à boucher et fermer hermétiquement le trou. Le bouchon d'étanchéité comporte un manchon (1); une tige (2) dont au moins une partie de la tête est plus large radialement par rapport au reste de la tige (2); la tête (4) de la tige présente un épaulement qui est pourvu d'une partie saillante annulaire (9) ; la tige (2) faisant saillie d'une extrémité du manchon (1), et la partie saillante annulaire (9) rejoignant l'autre extrémité du manchon (1); la tête (4) de la tige est formée dans un matériau plus dur que celui du manchon (1) et est constituée d'une partie de faiblesse (3) se trouvant entre la tête (4) et la partie de la tige distance de celle-ci. Lorsque le bouchon d'étanchéité est inséré dans un trou approprié, le manchon (1) étant entièrement enfoncé dans le trou, et qu'une plus grande force est appliquée sur la tige (2) par rapport au manchon (1), la compression axiale est appliquée par l'épaulement sur le matériau du manchon venant en about contre celui-ci, ce qui provoque l'introduction de la partie saillante annulaire (9) de la tête (4) de la tige dans le manchon (1), ainsi que la formation et la dilatation radiale du manchon de sorte que celui-ci vienne en contact avec la paroi du trou. La tige (2) se casse alors au niveau de la partie de faiblesse de sorte que la tête reste dans le manchon (1).

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