US 6,982,382 B2 | ||
Device for sealing ducts of electric and telephone lines | ||
Felipe Peña Valcárcel, Valencia (Spain) | ||
Assigned to Matrival, S.L., Beniparrell (Spain) | ||
Filed on Jun. 03, 2004, as Appl. No. 10/860,897. | ||
Application 10/860897 is a continuation of application No. PCT/ES02/00583, filed on Dec. 09, 2002. | ||
Prior Publication US 2004/0232628 A1, Nov. 25, 2004 | ||
Int. Cl. H02G 3/04 (2006.01); F16L 17/00 (2006.01) |
U.S. Cl. 174—68.1 | 4 Claims |
1. Device for sealing ducts of electric and telephone lines, and more specifically the end of the conduit or tubing through which the duct comes out, wherein it consists of a rectangular sheet with folding lines and provided with a perimetric strip that facilitates its adhering or welding forming a bag-type closed compartment, inside of which there is a small tank loaded with a pressurized gas, said tank being provided with a means for opening from the outside, of its outlet hole or mouth in order to let the gas escape and cause gradual and slow inflation of the compartment formed by the folded sheet and once arranged around the main in the end of the tubing or conduit, both elements adhering to walls during inflating. |