Internal conduit sealing member and band

Details Internal conduit sealing member and band Internal conduit sealing member and band

F - Mech Eng,Light,Heat,Weapons

16

L

F16L 55/162 (2006.01) F16L 55/163 (2006.01)

Patent

CA 2321489

The present invention provides an internal conduit seal for conduits and pipes having an elongated elastomeric seal (10) with first and second seal segments (13, 14) adjacent to the edges of the seal. The sealing segments are made up of a plurality of sealing ribs (21, 22, 23) and restraining members (31, 32) placed externally of the ribs in each segment (13, 14). The seal includes grooves (26) positioned over each segment for expansion bands used to compress the seal against the inside of a conduit. The invention also includes an expansion band having a radiused contacting surface which in combination with a locking member (409) of the invention positioned between an outer restraining member (32) and an adjacent rib (23) providing substantially improved sealing.

L'invention concerne un élément d'étanchéité conçu pour l'intérieur de conduits et de canalisations et constitué par un joint élastomère allongé (10) possédant un premier et un deuxième segments de joint (13, 14) contigus aux bords du joint. Ces segments d'étanchéité sont constitués par une pluralité de nervures d'étanchéité (21, 22, 23) et d'éléments de retenue (31, 32) placés à l'extérieur des nervures de chaque segment (13, 14). Ce joint comporte des gorges (26) placées au-dessus de chaque segment et conçues pour passer des bandes d'expansion utilisées afin de comprimer le joint contre l'intérieur du conduit. Elle concerne également une bande d'expansion présentant une surface de contact arrondie permettant d'obtenir, associée à un élément de verrouillage (409) situé entre un élément de retenue extérieur (32) et une nervure contiguë (23), une étanchéité sensiblement améliorée.

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