Patents Assigned to L. L. & G. Construction, Inc.
  • Pipe trenching
    Patent number: 10066362
    Abstract: Pipe burial apparatus are disclosed that include sets of rotary nozzle cutters configured to straddle a pipe that is to be buried and a nozzle array connected to a nozzle supply pipe in a manner that places the nozzle supply pipe in a cutting path of a rotary nozzle cutter. The nozzle supply pipe may be actuated to alternatingly move the nozzle array between a position straddling the pipe being buried and a cutting position that is below the pipe being buried.
    Type: Grant
    Filed: February 11, 2017
    Date of Patent: September 4, 2018
    Assignee: L. L. & G. Construction, Inc.
    Inventors: Wayne Ledet, Paul Oliver