Inventor
HESSE ALFONS
DE28 patents
⚠️ This page may combine multiple inventors who share the name “HESSE ALFONS”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TRACTO TECHNIK
17 patentsUS5937954AAug 17, 1999
Method for directional drilling
TRACTO TECHNIK56 citations95
US6199643B1Mar 13, 2001
Method and apparatus for directional boring
TRACTO TECHNIK20 citations92
US6142244ANov 7, 2000
Percussion boring machine with run monitoring
TRACTO TECHNIK18 citations92
US5876152AMar 2, 1999
Ramming drill for destructive replacement of buried pipelines
TRACTO TECHNIK43 citations92
US5127481AJul 7, 1992
Percussion boring machine for destructive replacement of buried pipelines
TRACTO TECHNIK46 citations92
US5833015ANov 10, 1998
Method and apparatus for sinking pipes or cables into a pilot borehole
TRACTO TECHNIK37 citations90
US5795991AAug 18, 1998
Arrangement of an impact-sensitive device in a housing
TRACTO TECHNIK46 citations89
US6644887B2Nov 11, 2003
Device for connecting a towed pipe to a towing apparatus
TRACTO TECHNIK11 citations74
US6491476B2Dec 10, 2002
Method and apparatus for the trenchless laying of pipework underground
TRACTO TECHNIK9 citations74
US6371220B1Apr 16, 2002
Pneumatically reversible ram drilling tool
TRACTO TECHNIK10 citations74
US5558167ASep 24, 1996
Percussion boring machine
TRACTO TECHNIK7 citations74
US5234061AAug 10, 1993
Percussion machine, for example self-propelled ram boring machine
TRACTO TECHNIK8 citations74
US5954145ASep 21, 1999
Reversible percussion piston drill apparatus
TRACTO TECHNIK11 citations73
US5960892AOct 5, 1999
Automatically driven pile driver drilling device
TRACTO TECHNIK13 citations72
US5937956AAug 17, 1999
Ram boring machine
TRACTO TECHNIK4 citations63
US5692576ADec 2, 1997
Locating device for percussion boring machines
TRACTO TECHNIK4 citations63
US5642786AJul 1, 1997
Securing and tensioning device for a towing cable connected to a percussion boring machine
TRACTO TECHNIK3 citations62
SCHMIDT PAUL
10 patentsUS5096000AMar 17, 1992
Process and apparatus for laying service lines without excavation
SCHMIDT PAUL34 citations92
US5125462AJun 30, 1992
Quick-change ram boring head
SCHMIDT PAUL20 citations82
US5238072AAug 24, 1993
Pipe rammer
SCHMIDT PAUL7 citations74
US5110237AMay 5, 1992
Ramming device
SCHMIDT PAUL16 citations74
US5074364ADec 24, 1991
Ram boring machine
SCHMIDT PAUL7 citations74
US4981181AJan 1, 1991
Ram boring machine for laying service lines without excavation
SCHMIDT PAUL12 citations74
US4953626ASep 4, 1990
Ram boring machine having a pull-and-turn reversing gear
SCHMIDT PAUL14 citations74
US4904116AFeb 27, 1990
Apparatus for making tunnels in the ground and for laying supply lines
SCHMIDT PAUL7 citations74
US5148878ASep 22, 1992
Ram boring machine
SCHMIDT PAUL17 citations73
US5095998AMar 17, 1992
Ram boring machine
SCHMIDT PAUL12 citations66