Drogue having biased end opening

H - Electricity – 02 – G

Patent

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Details

H02G 1/08 (2006.01)

Patent

CA 2533622

A drogue for drawing an elongated item through a conduit is disclosed. The drogue includes a flexible bag having a closed end and an oppositely disposed end opening. Shroud lines attached to the bag at the end opening allow attachment of the drogue to the item. A biasing member, preferably in the form of a continuous loop of flexible, resilient interconnected wire legs, is attached to the bag and positioned proximate to the end opening. The loop engages the bag over a portion of its length and biases the end opening into an open configuration to prevent its collapse and loss of pneumatic pressure as it is propelled through the conduit.

Cette invention concerne une outre conçue pour tirer un élément de forme allongée dans son conduit. Cette outre comprend un ballon souple dont une des extrémités est fermée et l'extrémité opposée ouverte. Des suspentes fixées au ballon à son extrémité ouverte assurent la fixation de l'outre et de son élément. Un élément de contrainte se présentant de préférence sous la forme d'une boucle de fils interconnectés souples et élastiques est fixé au ballon à proximité de l'extrémité ouverte. La boucle s'engage sur le ballon sur une partie de sa longueur et force l'ouverture d'extrémité à rester en configuration ouverte, empêchant le ballon de s'aplatir et de perdre sa pression pneumatique lorsqu'il est propulsé dans le conduit.

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