Resources Contact Us Home
Method and apparatus for producing underground pipes

Image Number 2 for United States Patent #4647256.

A method of producing underground pipes, with pipe sections being pressed ahead into the ground. For each pipe section, at least two partial pipe shells are used which are separated from one another in the longitudinal direction, and are joined about supply lines which are guided through the pipe. The joining process is effected before the pipe section is pressed into the ground. With this method, the supply lines do not have to be interrupted when a new pipe section is introduced. The apparatus for carrying out the method is provided with at least one joining station for joining the partial pipe shells in a precisely fitting manner, and a combining station for interconnecting the partial pipe shells.

  Recently Added Patents
Sensing during magnetic resonance imaging
System and method for access of user accounts on remote servers
Simultaneous wafer bonding and interconnect joining
System and method for updating firmware
Consistent retention and disposition of managed content and associated metadata
Methods and apparatus to perform time zone determination by a mobile station
  Randomly Featured Patents
Playground equipment module
Hemostatic compositions and methods for controlling bleeding
Combination step and bumper assembly and method
Process for the production of 3-aminoethyl-3,5,5-trimethylcyclohexyl amine
Surveillance camera system, remote-controlled monitoring device, control method, and their control program
Movable weights for a golf club head
Book making apparatus and method with divertor between bindaries
Drip irrigation hose and method of its manufacture
Telecommunications cable enclosure
Process for making pentachloronitrobenzene