Patents by Inventor Brian Walther

Brian Walther 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: 12312913
    Abstract: A shifting tool for use with an isolation valve. The shifting tool may include a mandrel and a first shifting assembly positioned about the mandrel. The first shifting assembly may include a shifting member engageable with a profile of the isolation valve to shift the isolation valve into at least one of an open position or a closed position, a sleeve engageable with the shifting member to prevent disengagement between the shifting member and the isolation valve, and a detent mechanism engageable with the shifting member to prevent disengagement between the sleeve and the shifting member. The detent mechanism may engage with the shifting member when the shifting tool initially engages with an isolation valve and relative movement of the shifting tool with respect to the isolation valve may disengage the detent mechanism from the shifting member when the detent mechanism reaches predetermined location within isolation valve.
    Type: Grant
    Filed: October 21, 2022
    Date of Patent: May 27, 2025
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: William Ryan Sisak, Bo Chen, Brian Walther
  • Patent number: 12297929
    Abstract: A core rod has internal and external profiles disposed in a housing assembly. A power spring in cooperation with the core rod within the housing assembly is connected to a power spring stopper that is fixed to the housing assembly with at least one shear screw. An inner axial cycling piston bar includes an external profile for mating engagement with the internal profile of the core rod. The inner axial cycling piston bar is connected to a piston in cooperation with a cycling spring, and the piston is configured to move in an upward direction. When a downward force exerted by the cycling spring exceeds the upwardly applied cycling force, the piston, the inner axial cycling piston bar, and the external profile move in a downward direction, thereby causing the core rod to move an incremental distance in the downward direction, which compresses the power spring by the incremental distance.
    Type: Grant
    Filed: July 1, 2024
    Date of Patent: May 13, 2025
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Bo Chen, Brian Walther
  • Patent number: 12276352
    Abstract: A system includes a compression spring having a latch sleeve, a piston rod including a groove section, and a ratchet assembly that progressively moves the piston rod in a downward direction. A latch collet on the latch sleeve sits on the groove section of the piston rod in a first position of the system. The latch collet locks a spring force of the compression spring as the ratchet assembly progressively moves the piston rod in the downward direction. The latch collet becomes unsupported from the groove section when the piston rod has progressively moved a predetermined distance, causing the compression spring to release and provide a push force that actuates a hydraulic valve from the first position to a second position.
    Type: Grant
    Filed: August 25, 2023
    Date of Patent: April 15, 2025
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Bo Chen, Brian Walther, Rannie Dong
  • Publication number: 20240425237
    Abstract: A recyclable woven laminated plastic bag having features that further prevent leakage of contents out of the bag, or infestation of organisms into the contents of the bag is provided. In various aspects the bag can be fabricated from a woven polyethylene, polypropylene, or combination thereof layer which can be laminated using polyethylene, polypropylene, or combination thereof resin with a film layer formed from polyethylene, polypropylene, or combination thereof, can form a sealed corner bag and/or a diagonal sealed bag, and can have one or more sides include graphics and/or printing. The bag can also provide a top end and/or a bottom end either or both of which provide a discrete area which may contain discrete graphics and/or printing.
    Type: Application
    Filed: August 16, 2024
    Publication date: December 26, 2024
    Inventors: Jacobo Bazbaz, Alberto Zaroli, Vladimir Marin, Brian Walther, Markus Kronigsfeld
  • Publication number: 20240417140
    Abstract: A bag having a front wall, back wall, first side wall, second side wall, top end, and bottom end; where at least one of a first edge of the first side wall and a first edge of the front wall and a first edge of the back wall and a first edge of the second side wall are sealed to form a sealed corner, where the sealed corner is heat sealed; where the bag is adapted to form a cube shape when filled with a filling material and both the top and bottom end of the bag are sealed; and where each of the front, back, first side, and second side wall include (i) a first woven layer including polyethylene, polypropylene, or a combination thereof; and (ii) a second film layer laminated to the first layer, said second layer including polyethylene, polypropylene, or a combination thereof.
    Type: Application
    Filed: June 15, 2023
    Publication date: December 19, 2024
    Applicant: Polytex Fibers LLC
    Inventors: Jacobo Bazbaz, Alberto Zaroli, Markus Kronigsfeld, Brian Walther
  • Publication number: 20240401434
    Abstract: A shifting tool for use with an isolation valve. The shifting tool may include a mandrel and a first shifting assembly positioned about the mandrel. The first shifting assembly may include a shifting member engageable with a profile of the isolation valve to shift the isolation valve into at least one of an open position or a closed position, a sleeve engageable with the shifting member to prevent disengagement between the shifting member and the isolation valve, and a detent mechanism engageable with the shifting member to prevent disengagement between the sleeve and the shifting member. The detent mechanism may engage with the shifting member when the shifting tool initially engages with an isolation valve and relative movement of the shifting tool with respect to the isolation valve may disengage the detent mechanism from the shifting member when the detent mechanism reaches predetermined location within isolation valve.
    Type: Application
    Filed: October 21, 2022
    Publication date: December 5, 2024
    Inventors: William Ryan Sisak, Bo Chen, Brian Walther
  • Publication number: 20240368968
    Abstract: A redundant trigger section that actuates a device between operational positions in response to a controlled signal includes a housing including an internal through passage and a plurality of chambers formed in a wall of the housing. a pilot piston disposed within the internal through passage, an actuating piston connected to the pilot piston, and a plurality of triggers connected to the actuating piston. Upon receipt of the controlled signal by a first tubing pressure chamber of the plurality of chambers, at least one trigger of the plurality of triggers activates the actuating piston, which pushes the pilot piston within the internal through passage from an initial position to a final position.
    Type: Application
    Filed: March 23, 2022
    Publication date: November 7, 2024
    Inventors: Maria Fernanda Tafur, Bo Chen, Yann Dufour, Brian Walther, Brad Swenson, Steven E. Buchanan
  • Publication number: 20240353023
    Abstract: A core rod has internal and external profiles disposed in a housing assembly. A power spring in cooperation with the core rod within the housing assembly is connected to a power spring stopper that is fixed to the housing assembly with at least one shear screw. An inner axial cycling piston bar includes an external profile for mating engagement with the internal profile of the core rod. The inner axial cycling piston bar is connected to a piston in cooperation with a cycling spring, and the piston is configured to move in an upward direction. When a downward force exerted by the cycling spring exceeds the upwardly applied cycling force, the piston, the inner axial cycling piston bar, and the external profile move in a downward direction, thereby causing the core rod to move an incremental distance in the downward direction, which compresses the power spring by the incremental distance.
    Type: Application
    Filed: July 1, 2024
    Publication date: October 24, 2024
    Inventors: Bo Chen, Brian Walther
  • Patent number: 12025238
    Abstract: A core rod has internal and external profiles disposed in a housing assembly. A power spring in cooperation with the core rod within the housing assembly is connected to a power spring stopper that is fixed to the housing assembly with at least one shear screw. An inner axial cycling piston bar includes an external profile for mating engagement with the internal profile of the core rod. The inner axial cycling piston bar is connected to a piston in cooperation with a cycling spring, and the piston is configured to move in an upward direction. When a downward force exerted by the cycling spring exceeds the upwardly applied cycling force, the piston, the inner axial cycling piston bar, and the external profile move in a downward direction, thereby causing the core rod to move an incremental distance in the downward direction, which compresses the power spring by the incremental distance.
    Type: Grant
    Filed: February 17, 2021
    Date of Patent: July 2, 2024
    Assignee: Schlumberger Technology Corporation
    Inventors: Bo Chen, Brian Walther
  • Patent number: 11952864
    Abstract: An isolation valve includes a ball valve element, an actuation section to rotate the ball valve element, and a trigger section that actuates the actuation section in response to a pressure differential. The actuation section includes an actuation mandrel, a piston housing that at least partially encases the actuation mandrel, a collet piston, and a holding collet. The piston housing and the actuation mandrel define a hydraulic chamber, and the collet piston separates the hydraulic chamber into an upper hydraulic chamber and a lower hydraulic chamber. The holding collet supports the collet piston during a stroke of the actuation mandrel that is triggered by the trigger section. The collet piston is configured to assume a rest position on the actuation mandrel before and during the stroke of the actuation mandrel, and the collet piston is configured to disengage from the actuation mandrel after the stroke of the actuation mandrel.
    Type: Grant
    Filed: July 7, 2021
    Date of Patent: April 9, 2024
    Assignee: Schlumberger Technology Corporation
    Inventors: Brian Walther, Bo Chen
  • Publication number: 20230400118
    Abstract: A system includes a compression spring having a latch sleeve, a piston rod including a groove section, and a ratchet assembly that progressively moves the piston rod in a downward direction. A latch collet on the latch sleeve sits on the groove section of the piston rod in a first position of the system. The latch collet locks a spring force of the compression spring as the ratchet assembly progressively moves the piston rod in the downward direction. The latch collet becomes unsupported from the groove section when the piston rod has progressively moved a predetermined distance, causing the compression spring to release and provide a push force that actuates a hydraulic valve from the first position to a second position.
    Type: Application
    Filed: August 25, 2023
    Publication date: December 14, 2023
    Inventors: Bo Chen, Brian Walther, Rannie Dong
  • Patent number: 11774002
    Abstract: A system includes a compression spring having a latch sleeve, a piston rod including a groove section, and a ratchet assembly that progressively moves the piston rod in a downward direction. A latch collet on the latch sleeve sits on the groove section of the piston rod in a first position of the system. The latch collet locks a spring force of the compression spring as the ratchet assembly progressively moves the piston rod in the downward direction. The latch collet becomes unsupported from the groove section when the piston rod has progressively moved a predetermined distance, causing the compression spring to release and provide a push force that actuates a hydraulic valve from the first position to a second position.
    Type: Grant
    Filed: April 19, 2021
    Date of Patent: October 3, 2023
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Bo Chen, Brian Walther, Rannie Dong
  • Publication number: 20230279737
    Abstract: An isolation valve includes a ball valve element, an actuation section to rotate the ball valve element, and a trigger section that actuates the actuation section in response to a pressure differential. The actuation section includes an actuation mandrel, a piston housing that at least partially encases the actuation mandrel, a collet piston, and a holding collet. The piston housing and the actuation mandrel define a hydraulic chamber, and the collet piston separates the hydraulic chamber into an upper hydraulic chamber and a lower hydraulic chamber. The holding collet supports the collet piston during a stroke of the actuation mandrel that is triggered by the trigger section. The collet piston is configured to assume a rest position on the actuation mandrel before and during the stroke of the actuation mandrel, and the collet piston is configured to disengage from the actuation mandrel after the stroke of the actuation mandrel.
    Type: Application
    Filed: July 7, 2021
    Publication date: September 7, 2023
    Inventors: Brian Walther, Bo Chen
  • Patent number: 11739612
    Abstract: An isolation valve system includes a well string having an isolation valve including a ball rotatably mounted to a pair of inserts for rotation about a fixed axis, an arm coupled to the ball at a position offset from the fixed axis, and a mandrel connected to an actuation end of the arm, the mandrel and the actuation end of the arm being disposed uphole of the ball. Via the actuation end of the arm, the mandrel forces rotation of the ball from a closed position to an open position by moving in a linear direction away from the ball, which allows flow of fluid along a through hole of the ball.
    Type: Grant
    Filed: September 16, 2019
    Date of Patent: August 29, 2023
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Cassius Elston, Brian Walther, Venkata Siva Reddy Battula, Ashish Sharma, Diana Orzechowski
  • Publication number: 20230213112
    Abstract: A system includes a compression spring having a latch sleeve, a piston rod including a groove section, and a ratchet assembly that progressively moves the piston rod in a downward direction. A latch collet on the latch sleeve sits on the groove section of the piston rod in a first position of the system. The latch collet locks a spring force of the compression spring as the ratchet assembly progressively moves the piston rod in the downward direction. The latch collet becomes unsupported from the groove section when the piston rod has progressively moved a predetermined distance, causing the compression spring to release and provide a push force that actuates a hydraulic valve from the first position to a second position.
    Type: Application
    Filed: April 19, 2021
    Publication date: July 6, 2023
    Inventors: Bo Chen, Brian Walther, Rannie Dong
  • Publication number: 20230041944
    Abstract: A core rod has internal and external profiles disposed in a housing assembly. A power spring in cooperation with the core rod within the housing assembly is connected to a power spring stopper that is fixed to the housing assembly with at least one shear screw. An inner axial cycling piston bar includes an external profile for mating engagement with the internal profile of the core rod. The inner axial cycling piston bar is connected to a piston in cooperation with a cycling spring, and the piston is configured to move in an upward direction. When a downward force exerted by the cycling spring exceeds the upwardly applied cycling force, the piston, the inner axial cycling piston bar, and the external profile move in a downward direction, thereby causing the core rod to move an incremental distance in the downward direction, which compresses the power spring by the incremental distance.
    Type: Application
    Filed: February 17, 2021
    Publication date: February 9, 2023
    Inventors: Bo Chen, Brian Walther, Rannie Dong
  • Patent number: 11332602
    Abstract: The disclosure relates to a tie resin formulation with excellent adhesion to polyethylene terephthalate (PET). The resin includes (A) an ethylene acrylate copolymer formed from ethylene and alkyl acrylate, where the ethylene acrylate copolymer has an acrylate content of 10 to 30 weight percent and an ethylene content of 90 to 70 weight percent based on the total weight of the ethylene acrylate copolymer and the acrylate content and (B) a transesterification catalyst; where the resin includes: 30 to 99.999 weight percent of the ethylene acrylate copolymer based on the total weight of the resin; 0.001 to 10 weight percent of the transesterification catalyst based on the total weight of the resin; and (C) 0 to 69.999 of a non-polar polyolefin based on the total weight of the resin.
    Type: Grant
    Filed: March 29, 2018
    Date of Patent: May 17, 2022
    Assignee: Dow Global Technologies LLC
    Inventors: Andong Liu, Yunlong Guo, Yong Zheng, Hongyu Chen, Brian Walther, Yi Zhang
  • Publication number: 20210388694
    Abstract: An isolation valve system includes a well string having an isolation valve including a ball rotatably mounted to a pair of inserts for rotation about a fixed axis, an arm coupled to the ball at a position offset from the fixed axis, and a mandrel connected to an actuation end of the arm, the mandrel and the actuation end of the arm being disposed uphole of the ball. Via the actuation end of the arm, the mandrel forces rotation of the ball from a closed position to an open position by moving in a linear direction away from the ball, which allows flow of fluid along a through hole of the ball.
    Type: Application
    Filed: September 16, 2019
    Publication date: December 16, 2021
    Inventors: Cassius Elston, Brian Walther, Venkata Siva Reddy Battula, Ashish Sharma, Diana Orzechowski
  • Publication number: 20210009795
    Abstract: The disclosure relates to a tie resin formulation with excellent adhesion to polyethylene terephthalate (PET). The resin includes (A) an ethylene acrylate copolymer formed from ethylene and alkyl acrylate, where the ethylene acrylate copolymer has an acrylate content of 10 to 30 weight percent and an ethylene content of 90 to 70 weight percent based on the total weight of the ethylene acrylate copolymer and the acrylate content and (B) a transesterification catalyst; where the resin includes: 30 to 99.999 weight percent of the ethylene acrylate copolymer based on the total weight of the resin; 0.001 to 10 weight percent of the transesterification catalyst based on the total weight of the resin; and (C) 0 to 69.999 of a non-polar polyolefin based on the total weight of the resin.
    Type: Application
    Filed: March 29, 2018
    Publication date: January 14, 2021
    Applicant: Dow Global Technologies LLC
    Inventors: Andong Liu, Yunlong Guo, Yong Zheng, Hongyu Chen, Brian Walther, Yi Zhang
  • Publication number: 20200079883
    Abstract: A process to form a polymer composition comprising an ethylene-based polymer and a functionalized ethylene-based polymer, said process comprising the steps described herein, which include passing a polymer melt through at least one static mixer, and wherein the functionalized ethylene-based polymer, in melt form, is introduced into the polymer melt, before the polymer melt enters the static mixer.
    Type: Application
    Filed: November 11, 2017
    Publication date: March 12, 2020
    Inventors: Brian Walther, Santosh S. Bawiskar, Jianping Pan