초록 ▼

A pipe connection for use in a ventilating duct system having ducts with circular cross-section is adapted to be inserted with a close fit into an outer pipe and be connected therewith. The pipe connection has a circumferential groove, in which a circumferential seal sealing against the inside of th

A pipe connection for use in a ventilating duct system having ducts with circular cross-section is adapted to be inserted with a close fit into an outer pipe and be connected therewith. The pipe connection has a circumferential groove, in which a circumferential seal sealing against the inside of the outer pipe is arranged. A terminal edge portion of the pipe connection comprises an outer conical portion which has a diameter decreasing towards the end of the pipe connection, and a circumferential guide surface having such a diameter that said close fit is obtained. The axial length (L3) of the terminal edge portion constitutes about 1.5-5.5% of the diameter of the guide surface. The outer conical portion at its end has a diameter which constitutes about 97-99.9% of the diameter of the guide surface.

대표청구항 ▼

1. A pipe connection for use in a ventilating duct system having ducts with circular cross-section, said pipe connection being adapted to be partially and with a close fit inserted into and connected with an outer pipe, said pipe connection having a circumferential groove, in which a circumferential

1. A pipe connection for use in a ventilating duct system having ducts with circular cross-section, said pipe connection being adapted to be partially and with a close fit inserted into and connected with an outer pipe, said pipe connection having a circumferential groove, in which a circumferential seal is arranged, which in an inserted position of said pipe connection abuts and seals against an inside of said outer pipe, said pipe connection having a terminal edge portion which is adapted to be inserted into said outer pipe and which comprises an outer conical portion with a diameter decreasing towards an end of said pipe connection, wherein said terminal edge portion of said pipe connection further comprises a circumferential guide surface which has such a diameter that said close fit is obtained and which is located between said groove and said conical outer portion; said terminal edge portion having an axial length which constitutes about 1.5-5.5% of said diameter of said guide surface.