Patents by Inventor Steven W. Wentworth

Steven W. Wentworth 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).

  • Patent number: 10415722
    Abstract: An adapter may be used to impart ramming force on a pipe having a larger diameter than the ramming tool. The adapter has a set of collets which interface with a conical nose on the ramming tool. The adapter further has a split ring that engages with the pipe and either the collet set or an intermediate cone. The split ring has gaps which are bridged by a cam connector. The cam connector may, through rotation of a cam pin, modify the size of the gaps in the split ring. Expansion of the split ring within a pipe allows the ring to hold its position without relying on a weldment or other more permanent connection.
    Type: Grant
    Filed: August 8, 2018
    Date of Patent: September 17, 2019
    Assignee: Earth Tool Company LLC
    Inventors: Steven W. Wentworth, Robert F. Crane, Mark D. Randa
  • Publication number: 20190136629
    Abstract: A reversible pipe ramming tool used in horizontal pipe replacement operations. The tool is powered by a pneumatic hose attached to a rear end of the tool. The tool has forward and rearward fluid paths, which can either communicate with one another or stand in isolation. Fluid flow along the forward fluid path, when it is maintained in isolation from the reverse fluid path, causes the tool to move in a forward direction. Fluid flow along the forward fluid path, when it is maintained in communication with the reverse fluid path, causes the tool to move in a rearward direction. The tool is switched between forward and reverse by flowing fluid through a pilot fluid path in fluid communication with a valve. Movement of a shuttle within the valve selectively isolates the forward fluid path from the reverse fluid path.
    Type: Application
    Filed: November 2, 2018
    Publication date: May 9, 2019
    Inventors: Steven W. Wentworth, Robert F. Crane, Mark D. Randa, Kelvin C. Aus
  • Patent number: 10246949
    Abstract: A system for pushing and pulling rod strings through the ground or an underground pipe. The apparatus has a downhole tool attached to the distal end of the rod string. The push/pull machine has a stationary frame that is placed against the ground to provide a reaction surface. The stationary frame has an opening for the rod string to pass through. A rod gripping assembly is supported on the machine frame and moveable relative to the stationary frame. The push/pull machine has a powered rod section spinner to add or remove rod string sections from the rod string. An actuator powers movement of jaws into a spinner bowl to cause a powered gripping of the rod string section. With the rod string section gripped a motor is activated to rotate the rod string section to connect it to a rod string or disconnect it from the rod string.
    Type: Grant
    Filed: March 8, 2018
    Date of Patent: April 2, 2019
    Assignee: Earth Tool Company LLC
    Inventors: Steven W. Wentworth, Robert F. Crane, Walter George Thompson
  • Publication number: 20190078720
    Abstract: A method for enlarging a crushed section of a ductile pipe. A wire rope having a bead or plurality of beads attached to the rope is placed in a ductile pipe. When a series of beads is used, each of the beads is sequentially larger. The wire rope is pulled through the crushed section, and the ductile pipe conforms to the larger diameter of the beads. The crushed section of pipe may be expanded so that a larger wire rope suitable for pipe extraction may be passed through. Alternatively, the pipe may be reformed and expanded to near or greater than its original size. The pipe may then be coated or a smaller slip-lined pipe may be placed within the original pipe.
    Type: Application
    Filed: September 10, 2018
    Publication date: March 14, 2019
    Inventors: Robert F. Crane, Steven W. Wentworth, Mark D. Randa
  • Publication number: 20190063662
    Abstract: A hinged cover overlays an opening that provides access to a pressurized inversion drum. A releasable latch assembly holds the cover in a closed and locked position. The latch assembly comprises a plurality of first knuckles formed in the cover that are interlaceable with a plurality of second knuckles formed in the body adjacent the opening. The latch assembly further comprises a rotatable latch pin that may be installed within the first and second knuckles. The latch assembly is moved from an unlocked to a locked position by rotation of the latch pin within the knuckles.
    Type: Application
    Filed: July 23, 2018
    Publication date: February 28, 2019
    Inventors: Craig Lawrence Noggle, Robert F. Crane, Mark D. Randa, Steven W. Wentworth
  • Publication number: 20190049042
    Abstract: An adapter may be used to impart ramming force on a pipe having a larger diameter than the ramming tool. The adapter has a set of collets which interface with a conical nose on the ramming tool. The adapter further has a split ring that engages with the pipe and either the collet set or an intermediate cone. The split ring has gaps which are bridged by a cam connector. The cam connector may, through rotation of a cam pin, modify the size of the gaps in the split ring. Expansion of the split ring within a pipe allows the ring to hold its position without relying on a weldment or other more permanent connection.
    Type: Application
    Filed: August 8, 2018
    Publication date: February 14, 2019
    Inventors: Steven W. Wentworth, Robert F. Crane, Mark D. Randa
  • Publication number: 20190049040
    Abstract: A pipe extraction machine can be used to remove a buried pipe from the ground. The machine has a carriage with jaws that grip the buried pipe. While gripped, the carriage moves relative to a support structure to pull the pipe out of the ground. Jaws are actuated by rotating clamp plates and maintained in opposition by static horizontal grooves. The jaws remain opposed and aligned during rotation of the clamp plates. A pipe shear may remove the pipe one piece at a time. A pipe puller can be used at the back end of the pipe being removed to simultaneously install a new pipe along the same path.
    Type: Application
    Filed: August 9, 2018
    Publication date: February 14, 2019
    Inventors: Steven W. Wentworth, Robert F. Crane, Mark D. Randa
  • Patent number: 10161201
    Abstract: A method for pushing and pulling rod strings through the ground or an underground pipe. A grip assembly is supported on a stationary frame and moveable relative to the stationary frame. The grip assembly has a slip bowl tapering from a large opening to a small opening in a first direction, a plurality of slips, and an actuator. The actuator powers relative axial movement between the slip bowl and the slips. A positioning assembly carries the grip assembly and powers its reciprocating and straight-line movement to urge the grip assembly in either a first or second direction. The grip assembly will work when operated to push or pull the pipe, irrespective of the is direction of the slips.
    Type: Grant
    Filed: May 3, 2017
    Date of Patent: December 25, 2018
    Assignee: Earth Tool Company LLC
    Inventors: Steven W. Wentworth, Robert F. Crane, Mark D. Randa
  • Publication number: 20180223608
    Abstract: A system for pushing and pulling rod strings through the ground or an underground pipe. The apparatus has a downhole tool attached to the distal end of the rod string. The push/pull machine has a stationary frame that is placed against the ground to provide a reaction surface. The stationary frame has an opening for the rod string to pass through. A rod gripping assembly is supported on the machine frame and moveable relative to the stationary frame. The push/pull machine has a powered rod section spinner to add or remove rod string sections from the rod string. An actuator powers movement of jaws into a spinner bowl to cause a powered gripping of the rod string section. With the rod string section gripped a motor is activated to rotate the rod string section to connect it to a rod string or disconnect it from the rod string.
    Type: Application
    Filed: March 8, 2018
    Publication date: August 9, 2018
    Inventors: Steven W. Wentworth, Robert F. Crane, Walter George Thompson
  • Publication number: 20180155985
    Abstract: A drill bit for use with a pneumatic hammer used in horizontal directional drilling operations. A compact forward face is formed on the first end of the drill bit. The forward face reciprocates against a face of a borehole. A steering face is disposed behind the forward face and is concave adjacent its first end and convex adjacent its second end, with a smooth transition between the two regions. The body has a circular profile at its second end. The drill bit displaces cobble and small rocks encountered, rather than breaking them, enhancing steering in mixed conditions.
    Type: Application
    Filed: December 1, 2017
    Publication date: June 7, 2018
    Inventors: Steven W. Wentworth, Robert F. Crane, Mark D. Randa
  • Publication number: 20180073311
    Abstract: A system for pushing and pulling rod strings through the ground or an underground pipe. The apparatus has a downhole tool attached to the distal end of the rod string. The push/pull machine has a stationary frame that is placed against the ground to provide a reaction surface. The stationary frame has an opening for the rod string to pass through. A rod gripping assembly is supported on the machine frame and moveable relative to the stationary frame. The push/pull machine has a powered rod section spinner to add or remove rod string sections from the rod string. An actuator powers movement of jaws into a spinner bowl to cause a powered gripping of the rod string section. With the rod string section gripped a motor is activated to rotate the rod string section to connect it to a rod string or disconnect it from the rod string.
    Type: Application
    Filed: October 13, 2014
    Publication date: March 15, 2018
    Inventors: Steven W. Wentworth, Robert F. Crane, Walter George Thompson
  • Patent number: 9915109
    Abstract: A system for pushing and pulling rod strings through the ground or an underground pipe. The apparatus has a downhole tool attached to the distal end of the rod string. The push/pull machine has a stationary frame that is placed against the ground to provide a reaction surface. The stationary frame has an opening for the rod string to pass through. A rod gripping assembly is supported on the machine frame and moveable relative to the stationary frame. The push/pull machine has a powered rod section spinner to add or remove rod string sections from the rod string. An actuator powers movement of jaws into a spinner bowl to cause a powered gripping of the rod string section. With the rod string section gripped a motor is activated to rotate the rod string section to connect it to a rod string or disconnect it from the rod string.
    Type: Grant
    Filed: October 13, 2014
    Date of Patent: March 13, 2018
    Assignee: Earth Tool Company LLC
    Inventors: Steven W. Wentworth, Robert F. Crane, Walter George Thompson
  • Publication number: 20170234084
    Abstract: A method for pushing and pulling rod strings through the ground or an underground pipe. A grip assembly is supported on a stationary frame and moveable relative to the stationary frame. The grip assembly has a slip bowl tapering from a large opening to a small opening in a first direction, a plurality of slips, and an actuator. The actuator powers relative axial movement between the slip bowl and the slips. A positioning assembly carries the grip assembly and powers its reciprocating and straight-line movement to urge the grip assembly in either a first or second direction. The grip assembly will work when operated to push or pull the pipe, irrespective of the is direction of the slips.
    Type: Application
    Filed: May 3, 2017
    Publication date: August 17, 2017
    Inventors: Steven W. Wentworth, Robert F. Crane, Mark D. Randa
  • Publication number: 20170045175
    Abstract: A system for installing a drainage structure in the subsurface. The system has a casing, a drive device, and at least one fin. The casing has opposed first and second ends and defines a hollow region. The drive device is supported at the first end of the casing and configured to drive movement of the casing in a first direction. The at least one fin projects from the casing into the hollow region and is configured to buckle a corrugated metal culvert positioned at least partially within the casing when the casing is driven in the first direction. The drive device may be a pneumatic hammer or puller attached to a rod pulling machine.
    Type: Application
    Filed: August 11, 2016
    Publication date: February 16, 2017
    Inventors: William Geoffrey Clarke, Steven W. Wentworth
  • Publication number: 20160340981
    Abstract: A backreaming assembly having an elongate rotatable tool shaft and a plurality of cutting elements. The tool shaft is disposed on a tool axis and has a first end and a second end. Each cutting element is supported on the shaft in side-to-side relationship. Each cutting element is rotatable with respect to the shaft and with respect to each other. Each cutting element has a center offset from the tool axis.
    Type: Application
    Filed: May 18, 2016
    Publication date: November 24, 2016
    Inventors: Steven W. Wentworth, Robert F. Crane, Mark D. Randa
  • Publication number: 20160161023
    Abstract: A system for pushing and pulling rod strings through the ground or an underground pipe. The apparatus has a downhole tool attached to the distal end of the rod string. The push/pull machine has a stationary frame that is placed against the ground to provide a reaction surface. The stationary frame has an opening for the rod string to pass through. A grip assembly is supported on the stationary frame and moveable relative to the stationary frame. The grip assembly has a slip bowl, a plurality of slips, and an actuator. The actuator does not engage the internal surface of any slip and powers relative axial movement between the slip bowl and the slips. A positioning assembly carries the grip assembly and powers its reciprocating and straight-line movement to urge the grip assembly in either a first or second direction.
    Type: Application
    Filed: January 29, 2016
    Publication date: June 9, 2016
    Inventors: Steven W. Wentworth, Robert F. Crane, Mark D. Randa
  • Patent number: 9328760
    Abstract: The present invention is directed to a rod string with a plurality of rod sections and a method for making up and breaking out the rod sections. The rod sections have corresponding pin and box ends, each having grooves and lands and an ungrooved portion. The rod sections can be connected by inserting the pin end into a box end and turning less than a full turn. A lock engagement mechanism having a first end and a second end is provided inside the rod sections and locks when the pin end is rotated into place. The lock engagement mechanism has a rotation stop which protrudes proximate the first end to prevent relative rotation of two rod sections until a key manipulates the lock engagement mechanism to retract the rotation stop.
    Type: Grant
    Filed: June 18, 2013
    Date of Patent: May 3, 2016
    Assignee: Earth Tool Company LLC
    Inventors: Steven W. Wentworth, Robert F. Crane
  • Publication number: 20150252632
    Abstract: A system for pushing and pulling rod strings through the ground or an underground pipe. The apparatus has a downhole tool attached to the distal end of the rod string. The push/pull machine has a stationary frame that is placed against the ground to provide a reaction surface. The stationary frame has an opening for the rod string to pass through. A rod gripping assembly is supported on the machine frame and moveable relative to the stationary frame. The push/pull machine has a powered rod section spinner to add or remove rod string sections from the rod string. An actuator powers movement of jaws into a spinner bowl to cause a powered gripping of the rod string section. With the rod string section gripped a motor is activated to rotate the rod string section to connect it to a rod string or disconnect it from the rod string.
    Type: Application
    Filed: October 13, 2014
    Publication date: September 10, 2015
    Inventors: Steven W. Wentworth, Robert F. Crane, Walter George Thompson
  • Patent number: 8979435
    Abstract: A rod pushing and pulling machine includes at least one hydraulic cylinder having a front end thereof engagable with a reaction surface at an entry opening of an existing pipeline or borehole, a spindle assembly, and a dual vise assembly. The spindle assembly includes a frame, a spindle shaft rotatably mounted in the frame, a distal end of the spindle shaft being threaded for engagement with a mating thread of a rod, a drive system for rotating the spindle shaft in threading and unthreading directions, the spindle frame being secured to a rear end of the hydraulic cylinder for pushing or pulling of a rod string engaged to the spindle shaft upon extension or retraction of the hydraulic cylinder, and a support assembly for the spindle shaft.
    Type: Grant
    Filed: March 14, 2011
    Date of Patent: March 17, 2015
    Assignee: Earth Tool Company LLC
    Inventors: Steven W. Wentworth, Robert F. Crane
  • Patent number: 8955586
    Abstract: An electronic transmitter assembly used in directional boring, the housing of the assembly being configured for receiving a beacon. The housing and cover of the assembly are configured to provide transmission windows along each side of the cover rather than in the center of the cover. The beacon contained within the housing is configured to have a forward isolator on one end and a rear isolator on the other end to isolate the beacon from shock during boring operations.
    Type: Grant
    Filed: January 24, 2012
    Date of Patent: February 17, 2015
    Assignee: Earth Tool Company, LLC
    Inventors: Mark D. Randa, Robert F. Crane, Steven W. Wentworth