Jointed pipe injector trigger mechanism

Wire back tension device

Device for conveying elongate objects

Conveyor apparatus

Continuous well string injector using multi-piston cylinder blocks for application of skate pressure

Spherical ball skate for continuous well string injectors

Linear driving device with load dependent clamping capability

Quick-release gripping insert assembly

Gripping dies for continuous coiled rod injectors and fabrication and use methods relating to same

Method and apparatus for deploying articles in deep waters

Apparatus and method for injecting tubing into a well

Hydraulic circuit and method for operating a gripping device

Apparatus and method for injecting tubing in a well bore

Cable traction apparatus and method

Winch slide-out trailer undercarriage