Inventor

RANDA MARK D

US35 patents

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

RANDA MARK D

EARTH TOOL CO LLC

Method and apparatus for replacement of underground pipe

Method and apparatus for on-grade boring

Method and apparatus for replacement of underground pipe

Drill bit for impact-assisted directional boring

Method and apparatus for replacement of underground pipe

Method and system for operating a reversible pneumatic ground piercing tool

Pneumatic impact piercing tool

Pneumatic ground piercing tool with movable chisel head

Pneumatic ground piercing tool

Lead pipe spudding prior to extraction or remediation

Extraction of ductile pipe

Pipe slitter

Pipe slitting apparatus

Method and apparatus for replacement of underground pipe

Pneumatic impact piercing tool

Latch assembly for use with an inversion drum

Powered slip actuation

Reversible pneumatic pipe ramming tool

Gut hook bladed pipe slitter

Split ring ram adapter with cam adjustment

CHARLES MACHINE WORKS

Lead pipe spudding prior to extraction or remediation

System for applying torsional force to a buried pipe to facilitate extraction

Extraction of ductile pipe

Pipe slitting machine with rope storage reel

Pipe slitter

Pipe slitter

Piercing tool aiming device

Latch assembly for use with an inversion drum

Pipe extraction assisted by pre-stressed strand

Pipe extraction assisted by pre-stressed strand

RANDA MARK D

Beacon assembly

Joint with check valve for a boring apparatus

Pneumatic impact tool

Pneumatic impact piercing tool

EARTHJTOOL COMPANY L L C

Drill string joint