Patents by Inventor Lawrence E. Wells

Lawrence E. Wells 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: 10081110
    Abstract: A pipe gripping assembly to selectively engage and disengage a pipe segment includes first and second jaws configured to clamp together around the pipe segment, at least one splined shaft fixedly housed in each of the first and second jaws; and at least one self-aligning piston housed in each of the first and second jaws and configured to slide and to rotate along the splined shaft. The self-aligning pistons each include a piston body, a cam, and a roller assembly coupled to the piston body and to the splined shaft. Each one of the roller assembly is configured to rotate relative to one of the cams.
    Type: Grant
    Filed: August 22, 2016
    Date of Patent: September 25, 2018
    Assignee: National Oilwell Varco, L.P.
    Inventors: Preston R. Fox, Neil E. West, Lawrence E. Wells
  • Publication number: 20160354934
    Abstract: A pipe gripping assembly to selectively engage and disengage a pipe segment includes first and second jaws configured to clamp together around the pipe segment, at least one splined shaft fixedly housed in each of the first and second jaws; and at least one self-aligning piston housed in each of the first and second jaws and configured to slide and to rotate along the splined shaft. The self-aligning pistons each include a piston body, a cam, and a roller assembly coupled to the piston body and to the splined shaft. Each one of the roller assembly is configured to rotate relative to one of the cams.
    Type: Application
    Filed: August 22, 2016
    Publication date: December 8, 2016
    Inventors: Preston R. Fox, Neil E. West, Lawrence E. Wells
  • Patent number: 9452535
    Abstract: A self-aligning piston is configured to selectively engage and disengage a pipe segment to permit a top drive output shaft to be coupled to the pipe segment. In one embodiment, the self-aligning piston includes a piston body configured to rotate between a first position and a second position, at least one resilient, energy-storing member coupled to the piston body, a roller assembly coupled to the piston body, and a cam disposed between the at least one resilient, energy-storing member and the roller assembly. The resilient, energy-storing member is configured to bias the piston body into the first position by rotating the roller assembly along the cam.
    Type: Grant
    Filed: May 31, 2013
    Date of Patent: September 27, 2016
    Assignee: National Oilwell Varco, L.P.
    Inventors: Preston R. Fox, Neil E. West, Lawrence E. Wells
  • Patent number: 9249902
    Abstract: A system configured to seal at least one flexible longitudinal member is provided. In one embodiment, the system includes a sealing member having at first set of apertures, a second set of apertures, and inner and outer interface surfaces. The system also includes a clamping member having a first set of apertures and an interface surface. The first set of apertures in the clamping member is configured to align with the first set of apertures in the sealing member. The first sets of apertures are configured to receive the at least one flexible longitudinal member. The interface surface of the clamping member is configured to abut the inner interface surface of the sealing member. The system also includes at least one threaded blind bore in the interface surface of the clamping member, and at least one fastener configured to draw the clamping member into engagement with the sealing member.
    Type: Grant
    Filed: November 19, 2013
    Date of Patent: February 2, 2016
    Assignee: National Oilwell Varco, L.P.
    Inventors: Richard Poundstone Munroe, Lawrence E. Wells, Arthur William Braman
  • Publication number: 20140353997
    Abstract: A self-aligning piston is configured to selectively engage and disengage a pipe segment to permit a top drive output shaft to be coupled to the pipe segment. In one embodiment, the self-aligning piston includes a piston body configured to rotate between a first position and a second position, at least one resilient, energy-storing member coupled to the piston body, a roller assembly coupled to the piston body, and a cam disposed between the at least one resilient, energy-storing member and the roller assembly. The resilient, energy-storing member is configured to bias the piston body into the first position by rotating the roller assembly along the cam.
    Type: Application
    Filed: May 31, 2013
    Publication date: December 4, 2014
    Inventors: Preston R. Fox, Neil E. West, Lawrence E. Wells
  • Patent number: 8752653
    Abstract: An internal blowout preventer used in drilling rigs for the discovery and production of hydrocarbons from the earth is disclosed. The internal blowout preventer has two independently and remotely operable blowout preventer valves in the same body, providing for greater service life and higher reliability during drilling operations. The two valves are loaded into the internal blowout preventer housing from a single end, and are operable by an actuator assembly.
    Type: Grant
    Filed: March 10, 2011
    Date of Patent: June 17, 2014
    Assignee: National Oilwell Varco, L.P.
    Inventors: Padmasiri Daya Seneviratne, Lawrence E. Wells, Arthur W. Braman, Preston R. Fox
  • Publication number: 20140138920
    Abstract: A system configured to seal at least one flexible longitudinal member is provided. In one embodiment, the system includes a sealing member having at first set of apertures, a second set of apertures, and inner and outer interface surfaces. The system also includes a clamping member having a first set of apertures and an interface surface. The first set of apertures in the clamping member is configured to align with the first set of apertures in the sealing member. The first sets of apertures are configured to receive the at least one flexible longitudinal member. The interface surface of the clamping member is configured to abut the inner interface surface of the sealing member. The system also includes at least one threaded blind bore in the interface surface of the clamping member, and at least one fastener configured to draw the clamping member into engagement with the sealing member.
    Type: Application
    Filed: November 19, 2013
    Publication date: May 22, 2014
    Inventors: Richard Poundstone Munroe, Lawrence E. Wells, Arthur William Braman
  • Patent number: 8590762
    Abstract: A staple cartridge including first and second staple cavities therein where the first cavity can define a first axis and the second cavity can define a second axis. In various embodiments, the first axis can be transverse to the second axis. In one embodiment, the first and second cavities can extend in directions which are not parallel to each other. In various embodiments, staples deployed from such first and second staple cavities can produce a staple pattern which can better constrict blood vessels in soft tissue and reduce blood flow therethrough.
    Type: Grant
    Filed: June 29, 2007
    Date of Patent: November 26, 2013
    Assignee: Ethicon Endo-Surgery, Inc.
    Inventors: Christopher J. Hess, Lawrence E. Wells, Jr., William B. Weisenburgh, II
  • Patent number: 8448320
    Abstract: A clamp for clamping to two tubulars, each of the two tubulars including a component of a top drive system, the two tubulars threadedly connected together, the clamp for inhibiting relative rotation of the two tubulars, each of the two tubulars having at least one tubular projection projecting therefrom, the clamp including a clamp body having an interior surface, a plurality of clamp projections projecting inwardly from the interior surface of the clamp body for holding the at least one tubular projection projecting from each of the two tubulars.
    Type: Grant
    Filed: July 23, 2010
    Date of Patent: May 28, 2013
    Assignee: Varco I/P, Inc.
    Inventors: Ronald W. Yater, Lawrence E. Wells, Neil Edward West, Cliff Swiontek, Howard Ervin
  • Publication number: 20110226485
    Abstract: An internal blowout preventer used in drilling rigs for the discovery and production of hydrocarbons from the earth is disclosed. The internal blowout preventer has two independently and remotely operable blowout preventer valves in the same body, providing for greater service life and higher reliability during drilling operations. The two valves are loaded into the internal blowout preventer housing from a single end, and are operable by an actuator assembly.
    Type: Application
    Filed: March 10, 2011
    Publication date: September 22, 2011
    Applicant: NATIONAL OILWELL VARCO, L.P.
    Inventors: Padmasiri Daya Seneviratne, Lawrence E. Wells, Arthur W. Braman, Preston R. Fox
  • Publication number: 20100283241
    Abstract: A clamp for clamping to two tubulars, each of the two tubulars including a component of a top drive system, the two tubulars threadedly connected together, the clamp for inhibiting relative rotation of the two tubulars, each of the two tubulars having at least one tubular projection projecting therefrom, the clamp including a clamp body having an interior surface, a plurality of clamp projections projecting inwardly from the interior surface of the clamp body for holding the at least one tubular projection projecting from each of the two tubulars.
    Type: Application
    Filed: July 23, 2010
    Publication date: November 11, 2010
    Inventors: Ronald W. Yater, Lawrence E. Wells, Neil Edward West, Cliff Swiontek, Howard Ervin
  • Patent number: 7784834
    Abstract: A clamp for clamping to two threadedly-connected items, and, in one aspect, two threadedly-connected components of a top drive system.
    Type: Grant
    Filed: March 28, 2007
    Date of Patent: August 31, 2010
    Assignee: Varco I/P, Inc.
    Inventors: Ronald W. Yater, Lawrence E. Wells, Neil Edward West, Cliff Swiontek, Howard Ervin
  • Patent number: 7784565
    Abstract: A top drive system for wellbore operations, the top drive system including motor apparatus, a main shaft driven by the motor apparatus, and sensing apparatus for sensing bending of the main shaft; and, in certain aspects, the system providing information regarding the extent of main shaft bending and/or for warning an operator of an undesirable amount of main shaft bending. This abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure and is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims, 37 C.F.R. 1.72(b).
    Type: Grant
    Filed: September 17, 2008
    Date of Patent: August 31, 2010
    Assignee: National Oilwell Varco, L.P.
    Inventors: Lawrence E. Wells, Robert Brian Luher
  • Patent number: 7784535
    Abstract: A bail support and a top drive system for an oilfield drill rig. The top drive system includes a drive apparatus, and the bails have bodies with upper head portions and two spaced-apart legs. Each leg includes an upper leg portion and a lower leg portion. The upper leg portions are non-parallel to each other and extend from the head portion at an angle to a centerline of the bail. Each lower leg portion extends down from its corresponding upper leg portion in a reverse bend.
    Type: Grant
    Filed: June 27, 2007
    Date of Patent: August 31, 2010
    Assignee: Varco I/P, Inc.
    Inventors: Lawrence E. Wells, Brett Gregory Wallihan
  • Patent number: 7748473
    Abstract: A top drive system for wellbore operations, the top drive system including motor apparatus, a main shaft driven by the motor apparatus, the main shaft having a top end and a bottom end, a quill connected to the main shaft, a gear system interconnected with the quill and the motor apparatus, and a multi-seal system for sealing against the quill. This abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure and is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims, 37 C.F.R. 1.72(b).
    Type: Grant
    Filed: July 11, 2008
    Date of Patent: July 6, 2010
    Assignee: National Oilwell Varco, L.P.
    Inventors: Lawrence E. Wells, Preston Fox, Cliff Swiontek, Svein Stubstad, Howard L. Ervin, James D. Brugman, Paul Conover
  • Patent number: 7735565
    Abstract: An apparatus for use in wellbore operations and a method for using it is provided. The apparatus includes a main body, two support ears spaced-apart and projecting from the main body, each having an inner ear part and an outer ear part. The inner ear part is able to support more weight than the outer ear part. In certain aspects, structure for preventing a large support link from being positioned on an outer ear part is provided. The apparatus, may be any of a link adapter, a block adapter, a becket, an elevator, and a drilling hook.
    Type: Grant
    Filed: October 22, 2009
    Date of Patent: June 15, 2010
    Assignee: Varco I/P, Inc.
    Inventors: Lawrence E. Wells, James Edward Lynch, Neil Edward West, Guy L. McClung, III
  • Publication number: 20100065336
    Abstract: A top drive system for wellbore operations, the top drive system including motor apparatus, a main shaft driven by the motor apparatus, and sensing apparatus for sensing bending of the main shaft; and, in certain aspects, the system providing information regarding the extent of main shaft bending and/or for warning an operator of an undesirable amount of main shaft bending. This abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure and is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims, 37 C.F.R. 1.72(b).
    Type: Application
    Filed: September 17, 2008
    Publication date: March 18, 2010
    Inventors: Lawrence E. Wells, Robert Brian Luher
  • Patent number: 7665530
    Abstract: A tubular gripping system and a top drive drilling system with such a tubular gripping system, in at least some aspects, the gripping system beneath the top drive unit and, in at least some aspects, the gripping system having a body with four spaced-apart grippers movably connected thereto and piston/cylinder devices movably interconnected with each gripper for moving the grippers to clamp the tubular.
    Type: Grant
    Filed: November 3, 2007
    Date of Patent: February 23, 2010
    Assignee: National Oilwell Varco L.P.
    Inventors: Lawrence E. Wells, Neil Edward West
  • Publication number: 20100038095
    Abstract: An apparatus for use in wellbore operations and a method for using it is provided. The apparatus includes a main body, two support ears spaced-apart and projecting from the main body, each having an inner ear part and an outer ear part. The inner ear part is able to support more weight than the outer ear part. In certain aspects, structure for preventing a large support link from being positioned on an outer ear part is provided. The apparatus, may be any of a link adapter, a block adapter, a becket, an elevator, and a drilling hook.
    Type: Application
    Filed: October 22, 2009
    Publication date: February 18, 2010
    Inventors: Lawrence E. Wells, James Edward Lynch, Neil Edward West, Guy L. McClung, III
  • Publication number: 20090044982
    Abstract: A top drive system for wellbore operations, the top drive system including motor apparatus, a main shaft driven by the motor apparatus, the main shaft having a top end and a bottom end, a quill connected to the main shaft, a gear system interconnected with the quill and the motor apparatus, and a multi-seal system for sealing against the quill. This abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure and is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims, 37 C.F.R. 1.72(b).
    Type: Application
    Filed: July 11, 2008
    Publication date: February 19, 2009
    Inventors: Lawrence E. Wells, Preston Fox, Cliff Swiontek, Svein Stubstad, Howard L. Ervin, James D. Brugman, Paul Conover