Inventor

PUETTMANN FRANZ-JOSEF

DE26 patents

⚠️ This page may combine multiple inventors who share the name “PUETTMANN FRANZ-JOSEF”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

PUETTMANN FRANZ-JOSEF

TRACTO TECHNIK

Apparatus and method for the longitudinal splitting of pipes laid underground

Method and apparatus for directional boring

Method of operating an earth boring machine

Widening apparatus

Boring head method and boring head for a ground boring device

Cutting device for pipelines

Thread retention for an earth boring device

Steerable soil displacement hammer

Pneumatically reversible ram drilling tool

Reversible percussion piston drill apparatus

Apparatus for static underground drilling

Steered-head ram drilling tool

Machine for horizontal percussion boring

Pneumatically reversible ram boring device

Positive connection between a pipe and a ring inserted into the pipe

Boring apparatus with coupling for rapid connection of drill string segments

PUETTMANN FRANZ-JOSEF

Rod coupling having a pin

Thread retention for an earth boring device

Rod assembly driver

System and method for tightening string sections to form a string

SCHMIDT PAUL

Ram boring machine having a pull-and-turn reversing gear

Ram boring machine

Process for welding a follower pipe to a buried pipe string

TRACTO TECHNIK SCHMIDT SPEZIAL

Method for steering a ground-drilling machine

TRACTO TECHNIK PAUL SCHIMDT SP

Boring machine

PUETTMANN FRANZ JOSEF

Insertion coupling for a boring rod assembly and a boring rod assembly