Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Robot control device
Method and a channel estimating arrangement for performing channel estimation
Water bottle warning triangle
Mobile terminal and method for displaying information
Wireless monitoring in process applications
Soybean cultivar CL1013665
Method for fabricating solar cell
  Randomly Featured Patents
Fast time-of-flight mass spectrometer with improved dynamic range
Endoprothesis stent delivery system and method of using the same
Process for the manufacture of heptakis-[2,6-di-O-methyl]-beta-cyclodextrin
Method to alert drowsy driver
Machine and process for removing dissolved gasses from liquids
Apparatus for supporting sporting guns during testing intervals
Radar system
Steering wheel cover assembly
Methods and apparatus for translated wafer stand-in tester
Temporary footwear for hoofed animals