Patents by Inventor Jonathan Marshall

Jonathan Marshall 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: 8839523
    Abstract: A safety knife comprises a knife body (10), a blade carrier (16) movable within the knife body (10) between a retracted position and an extended position, biasing means (24) urging the blade carrier (16) towards its retracted position, latch means to latch the blade carrier (16) in its extended position, and a weight (36) movable along a passage (32) relative to the knife body (10) and engageable with release means (40) to release the latch means.
    Type: Grant
    Filed: February 2, 2010
    Date of Patent: September 23, 2014
    Assignees: WA1 Designs Limited, The Safety Knife Co., Ltd.
    Inventors: William Ireland, Peter Jonathan Marshall
  • Publication number: 20140262525
    Abstract: An underreamer for increasing a diameter of a wellbore. The underreamer may include a body having an axial bore extending at least partially therethrough. An electromagnetic activation system may be disposed at least partially within the bore of the body. A valve may be disposed within the bore of the body and coupled to the electromagnetic activation system. The valve may include a mobile element and a static element. The mobile element may be coupled to the electromagnetic activation system and move from a first position where the mobile element obstructs fluid flow through the valve to a second position where the mobile element permits fluid flow through the valve. A cutter block may be movably coupled to the body and move radially-outward as the mobile element moves from the first position to the second position.
    Type: Application
    Filed: March 13, 2014
    Publication date: September 18, 2014
    Applicant: SMITH INTERNATIONAL, INC.
    Inventors: Nathan Fuller, Craig Boswell, Jacques Orban, Jonathan Marshall, Jordan Englund
  • Patent number: 8820440
    Abstract: In one aspect of the present invention, a steering assembly for downhole directional drilling comprises an outer bit comprising a bore and an outer cutting area and in inner bit comprising an inner cutting area and connected to a shaft that is disposed within the bore. At least one biasing mechanism is disposed around the shaft. At least one fluid channel is disposed within the outer bit and redirects fluid to the at least one biasing mechanism causing the at least one biasing mechanism to push the shaft and alter an axis of the inner bit with respect to an axis of the outer bit.
    Type: Grant
    Filed: November 30, 2010
    Date of Patent: September 2, 2014
    Inventors: David R. Hall, Scott Dahlgren, Jonathan Marshall
  • Publication number: 20140019548
    Abstract: A method for determining influential broadcast messages in which a processing device identifies a plurality of re-posts of a post, wherein each re-post comprises a time stamp, determines whether the time stamp of the re-post is within a first time interval or a second time interval, increments a first count associated with the first time interval when the time stamp is within the first time interval or a second count associated with the second time interval when the time stamp is within the second time interval, and determines a public sentiment attribute associated with the post in view of a comparison between the first count and the second count.
    Type: Application
    Filed: July 11, 2013
    Publication date: January 16, 2014
    Inventors: Lawrence C. Rafsky, Robert E. Ungar, Thomas B. Donchez, Jonathan A. Marshall, Carolina Tejada
  • Publication number: 20130307266
    Abstract: An anchoring assembly in a downhole tool, the assembly including a first tubular member, a second tubular member coupled to the first tubular member, and an anchoring block disposed between the first tubular member and the second tubular member. The anchoring block includes a body having a central axis defined therethrough and a central bore formed therethrough, a contact crown, in which at least one annular flow channel is formed between the contact crown and the body, and a contact ring configured to engage at least a portion of the first tubular member.
    Type: Application
    Filed: May 18, 2012
    Publication date: November 21, 2013
    Inventors: Daniel Manwill, Jonathan Marshall, Jacques Orban, Ray R. Sherrill
  • Publication number: 20130206390
    Abstract: A piston assembly may comprise a housing with a wall, and at least one chamber formed in the wall. A piston may be disposed within the chamber and at least one passageway may pass through the piston. At least one pin may be disposed within the passageway and attached to the chamber, and the piston may be free to translate relative to the pin.
    Type: Application
    Filed: February 10, 2012
    Publication date: August 15, 2013
    Inventors: David R. Hall, Jonathan Marshall
  • Patent number: 8414085
    Abstract: In one aspect of the invention, a tool comprises a head and a shank assembly. The shank assembly has a tensioned element axially disposed within a bore of a structural element and a distal end of the tensioned element is secured within or below the bore. The head has a cavity formed in its base end and is adapted to receive a proximal end of the tensioned element. The tensioned element has a radially extending catch adapted to interlock within the cavity of the head. The head is harder than the tensioned element.
    Type: Grant
    Filed: January 28, 2008
    Date of Patent: April 9, 2013
    Assignee: Schlumberger Technology Corporation
    Inventors: David R. Hall, Scott Dahlgren, Jonathan Marshall
  • Patent number: 8408336
    Abstract: In one aspect of the present invention, a downhole drill string assembly comprises a bore there through to receive drilling fluid. A turbine may be disposed within the bore and exposed to the drilling fluid. At least one flow guide may be disposed within the bore and exposed to the drilling fluid wherein the flow guide acts to redirect the flow of the drilling fluid across the turbine. The flow guide may be adjusted by an actuator. Adjustments to the flow guide may be controlled by a downhole telemetry system, a processing unit, a control loop, or any combination thereof. In various embodiments the turbine may comprise rotatable turbine blades.
    Type: Grant
    Filed: May 28, 2009
    Date of Patent: April 2, 2013
    Assignee: Schlumberger Technology Corporation
    Inventors: David R. Hall, Scott Dahlgren, Paula Turner, Christopher Durrand, Jonathan Marshall
  • Publication number: 20130059474
    Abstract: In one aspect of the present invention, an inductive coupling comprises a pin section and a box section. The pin section comprises an inner electrical conductor supported in an exterior tapered surface of the pin section. The box section comprises an outer electrical conductor supported in an interior tapered surface of the box section. The exterior and interior tapered surfaces are configured to align each other such that the interior and exterior tapered surfaces are coaxial with each other when fully engaged.
    Type: Application
    Filed: September 7, 2011
    Publication date: March 7, 2013
    Inventors: David R. Hall, Scott Dahlgren, Jonathan Marshall, Jerome Miles
  • Patent number: 8371400
    Abstract: A downhole tool string component has at least one end adapted to connect to an adjacent tool sting component and a bore adapted to accommodate a flow of drilling fluid. A turbine is disposed within the bore and an actuating assembly is arranged such that a clutch may mechanically connect and disconnect with the turbine.
    Type: Grant
    Filed: February 24, 2009
    Date of Patent: February 12, 2013
    Assignee: Schlumberger Technology Corporation
    Inventors: David R. Hall, Scott Dahlgren, Jonathan Marshall
  • Patent number: 8365842
    Abstract: A tool comprising a fluid path defined by a bore formed within a tubular body includes a guided sleeve and a reciprocating sleeve disposed within the bore. A gearwheel is located on an outer surface of the guided sleeve and at least one pawl located on an inner surface of the reciprocating sleeve. When the reciprocating sleeve translates axially, it rotates in a first direction. As the reciprocating sleeve rotates, the at least one pawl pushes the gearwheel and causes the guided sleeve to rotate in the first direction into a new position.
    Type: Grant
    Filed: October 29, 2009
    Date of Patent: February 5, 2013
    Assignee: Schlumberger Technology Corporation
    Inventors: David R. Hall, Scott Dahlgren, Jonathan Marshall
  • Patent number: 8365820
    Abstract: In one aspect of the present invention, a system for a downhole string comprises a fluid path defined by a bore formed within a tubular component. A reciprocating valve is located within a wall of the bore hydraulically connecting the bore with a fluid passage. The valve comprises a substantially cylindrical shaped housing. First and second ports are disposed on a circumference of the housing, and a fluid pathway is disposed intermediate the first and second ports. The valve comprises an axially slidable spool disposed within and coaxial with the housing and comprises a blocker. The blocker is configured to slide axially so to block and unblock the fluid pathway to control a flow from the bore to the fluid passage. The valve comprises a plurality of seals. Each seal is disposed opposite of the blocker causing pressure to be equally applied to the blocker and the plurality of seals.
    Type: Grant
    Filed: October 29, 2010
    Date of Patent: February 5, 2013
    Inventors: David R. Hall, Jonathan Marshall, Dahlgren Scott
  • Patent number: 8365843
    Abstract: In one aspect of the invention, a downhole tool string component has at least one end adapted to connect to an adjacent tool sting component and a bore adapted to accommodate a flow of drilling fluid. A turbine is disposed within the bore and an actuating assembly is arranged such that a clutch may mechanically connect and disconnect with the turbine.
    Type: Grant
    Filed: February 24, 2009
    Date of Patent: February 5, 2013
    Assignee: Schlumberger Technology Corporation
    Inventors: David R. Hall, Scott Dahlgren, Jonathan Marshall
  • Patent number: 8365821
    Abstract: In one aspect of the present invention, a system for a downhole string comprises a fluid path defined by a bore formed within a tubular component. A reciprocating valve is located within a wall of the bore hydraulically connecting the bore with a fluid passage. The valve comprises a substantially cylindrical shaped housing. First and second ports are disposed on a circumference of the housing, and a fluid pathway is disposed intermediate the first and second ports. The valve comprises an axially slidable spool disposed within and coaxial with the housing and comprises a blocker. The blocker is configured to slide axially so to block and unblock the fluid pathway to control a flow from the bore to the fluid passage. The valve comprises a plurality of seals. Each seal is disposed opposite of the blocker causing pressure to be equally applied to the blocker and the plurality of seals.
    Type: Grant
    Filed: October 29, 2010
    Date of Patent: February 5, 2013
    Inventors: David R. Hall, Jonathan Marshall, Dahlgren Scott
  • Patent number: 8353354
    Abstract: A crawler system for an earth boring system comprises at least two expandable tools along a common axis and spaced apart from each other along the common axis by a piston cylinder device. The at least two expandable tools comprise a mandrel comprising a tubular body and an outer diameter, a plurality of blades, and a slidable sleeve capable of manipulating the plurality of blades into collapsed and expanded positions. The plurality of blades of one of the at least two expandable tools expand to an expanded position and engage a borehole wall. The piston cylinder device anchors against the engagement between the borehole wall and one of the at least two expandable tools to axially translate the other of the at least two expandable tools.
    Type: Grant
    Filed: July 14, 2010
    Date of Patent: January 15, 2013
    Inventors: David R. Hall, Scott S. Dahlgren, Jonathan Marshall
  • Patent number: 8342266
    Abstract: In one aspect of the present invention, a downhole rotary steerable system comprises a fluid path defined by a bore formed within a drill string component. A valve located within a wall of the bore which hydraulically connects the bore with a fluid cavity. A steering nozzle disposed on the drill string component and in communication with the fluid cavity. The valve is configured to control flow from the bore to the fluid cavity with an azimuthal sensing mechanism configured to determine the azimuth of the steering nozzle and instrumentation configured to control the valve based off of input from the azimuthal sensing mechanism.
    Type: Grant
    Filed: March 15, 2011
    Date of Patent: January 1, 2013
    Inventors: David R. Hall, Jonathan Marshall, Scott Dahlgren
  • Patent number: 8333254
    Abstract: In one aspect of the present invention, a steering assembly for downhole directional drilling comprises a drill bit comprising a cutting portion and an outer diameter. A steering ring disposed around the outer diameter, and at least one biasing mechanism disposed intermediate the outer diameter and the steering ring. The at least one biasing mechanism is configured to move the steering ring with respect to the outer diameter.
    Type: Grant
    Filed: October 1, 2010
    Date of Patent: December 18, 2012
    Inventors: David R. Hall, Jonathan Marshall, Scott S. Dahlgren
  • Publication number: 20120313741
    Abstract: In one aspect of the present invention, an inductive coupling comprises an inner and outer casing. The inner casing comprises an inner trough formed into an exterior surface with an inner electrical conductor disposed within the inner trough. The outer casing comprises an outer trough formed into the interior surface with an outer electrical conductor disposed within the outer trough. The outer casing is configured to encircle the inner casing such that the inner electrical conductor is in magnetic communication with the outer electrical conductor. A helical geometry is formed in at least one of the inner or outer troughs. The inner and outer casings are configured to move relative to each other.
    Type: Application
    Filed: June 9, 2011
    Publication date: December 13, 2012
    Inventors: David R. Hall, Scott Dahlgren, Jonathan Marshall
  • Publication number: 20120273187
    Abstract: In one aspect of the present invention, a tool string component comprises at least one end that attaches to an adjacent component in a through bore. The invention also comprises a laterally extending member disposed along a length of the tool string component. A magnetic mechanism is configured to sense an extension depth of the laterally extending member.
    Type: Application
    Filed: April 27, 2011
    Publication date: November 1, 2012
    Inventors: David R. Hall, Scott Dahlgren, Jonathan Marshall
  • Patent number: 8297378
    Abstract: A hammer assembly comprises a jack element substantially coaxial with an axis of rotation of a drill bit. The jack element includes a distal end extending beyond a working face of the drill bit. A porting mechanism within the bore comprises a first and second disc substantially contacting along a flat interface that is substantially normal to the axis of rotation. The first disc is attached to a turbine which is adapted to rotate the first disc with respect to the second disc. The first disc comprises a first set of ports adapted to align and misalign with a second and third set of ports in the second disc. As the first disc rotates, the sets of ports are adapted to route a drilling fluid into a piston chamber where a porting mechanism causes the jack element to repeatedly extend further beyond the working surface of the drill bit and then retract at a constant frequency.
    Type: Grant
    Filed: November 23, 2009
    Date of Patent: October 30, 2012
    Assignee: Schlumberger Technology Corporation
    Inventors: David R. Hall, Scott Dahlgren, Jonathan Marshall