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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Hodgson; Alistair
Address:
Barnsley, GB
No. of patents:
2
Patents:












Patent Number Title Of Patent Date Issued
6382877 Method of installing replacement pipe and apparatus therefor May 7, 2002
The invention concerns the replacement of underground pipes (52) wherein a former/cutting blade device (10) is pulled along the line of the existing pipe (52) by a cable fed (30) previously into the existing pipe (52). As the device (10) is so pulled it cuts and spreads the existing pipe
6092553 Method of installing re-placement pipe July 25, 2000
The invention provides that an existing underground pipe (52) is replaced by pulling a cutting device (10) through the existing pipe (52) by means of a strong steel stranded cable, and at the same time pulling the replacement pipe (26) along behind the cutting device (10). The invention,










 
 
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