Patents by Inventor Albert A. Tenbusch, II

Albert A. Tenbusch, II has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Articulated lead for trenchless pipe replacement
    Patent number: 7390143
    Abstract: Trenchless pipe replacement apparatus equipped with articulated lead sections that flex and accommodate an irregular path of an old pipe line. The articulated lead sections are coupled together by a flexible joint that allows the lead section assembly to flex and follow the path of the old pipe line that may be irregular due to misaligned pipe sections, dropped joints and other irregularities.
    Type: Grant
    Filed: April 11, 2007
    Date of Patent: June 24, 2008
    Inventor: Albert A. Tenbusch, II
  • Trenchless pipe replacement apparatus and technique
    Patent number: 6588983
    Abstract: The apparatus and technique of the invention constitutes a hydraulic jack system for pushing sections of new pipe which, in turn, pushes a sleeve-cone expander arrangement to break up the old pipe and define a straight path for the new pipe. Apparatus is employed to determine the skin friction and the penetration friction, and to dispense a lubricant to reduce such frictional forces.
    Type: Grant
    Filed: August 31, 1999
    Date of Patent: July 8, 2003
    Inventor: Albert A. Tenbusch, II
  • Technique for administering a lubricant in an underground pipe replacement system
    Patent number: 6039505
    Abstract: The apparatus and technique of the invention constitutes a hydraulic jack system for pushing sections of new pipe which, in turn, pushes a sleeve-cone expander arrangement to break up the old pipe and define a straight path for the new pipe. Apparatus is employed to determine the skin friction and the penetration friction, and to dispense a lubricant to reduce such frictional forces.
    Type: Grant
    Filed: March 2, 1998
    Date of Patent: March 21, 2000
    Inventor: Albert A. Tenbusch, II
  • Underground pipe replacement technique
    Patent number: 5816745
    Abstract: The apparatus and technique of the invention constitutes a hydraulic jack system for pushing sections of new pipe which, in turn, pushes a sleeve-cone expander arrangement to break up the old pipe and define a straight path for the new pipe. Apparatus is employed to determine the skin friction and the penetration friction, and to dispense a lubricant to reduce such frictional forces.
    Type: Grant
    Filed: January 8, 1996
    Date of Patent: October 6, 1998
    Inventor: Albert A. Tenbusch, II
  • Underground pipe replacement technique
    Patent number: 5482404
    Abstract: The apparatus and technique of the invention constitutes a stationary hydraulic jack for pushing sections of new pipe which, in turn, push a frontal cone expander to break up the old pipe and define a path for the new pipe. Frontal apparatus located in front of the new pipe and pushed thereby can include a hydraulic jack for independently advancing the cone expander without operating the stationary hydraulic jack.
    Type: Grant
    Filed: July 27, 1993
    Date of Patent: January 9, 1996
    Inventor: Albert A. Tenbusch, II