Method for installing a duct in the ground and device for performing this method
AssigneeKoninklijke KPN N.V.
InventorCornelis Casparus Van Bijsterveld
Life of this patent
Estimating the term…
Abstract
Method for installing a duct (2) in the ground, whereby a longitudinal element (1) is already present in the ground near the route along which the duct (2) is to be installed, whereby the existing longitudinal element (1) is used as a guide for the duct (2) to be installed and the duct (2) is pushed into the ground with the aid of a fluid under pressure fed through the duct (2), whereby the duct (2) to be installed is coupled to the existing longitudinal element (1) by at least one divisible coupling piece (3) and whereby the coupling element is advanced along the existing longitudinal element (1) The invention also provides a coupling piece (3) for guiding the duct (2) along the longitudinal element (1).
Claims20
A method for installing a duct in the ground, proximate a longitudinal element, the method comprising the steps of:
- moveably securing a coupling device to the longitudinal element such that the coupling device is moveable along the length of the longitudinal element, and fixedly attaching the coupling device to an end of the duct;
- pushing the duct such that it advances in a substantially parallel manner with respect to the longitudinal element, and
- causing a fluid under pressure to flow through the duct towards and out of the end of the duct to which the coupling device is attached, wherein
- the coupling device includes a coupling piece having two connectable parts which are disposed about the longitudinal element, an insertion opening in which the end of the duct is immovably connected to the coupling device, and an elongated guide opening through which the longitudinal element is moved during pushing of the duct.
Apparatus for a duct in the ground proximate a longitudinal element, comprising:
- a coupling device operatively coupled to an end portion of the duct and the longitudinal element, and
- means coupled to the duct for causing a fluid to flow through the duct towards and out of the end of the duct, wherein
- the coupling device includes a coupling piece having two connectable parts which are disposed about the longitudinal element, an insertion opening in which the end of the duct is immovably connected, and an elongated guide opening through which the longitudinal element is moved during installation of the duct.
Dependencies are inferred from the claim text.