Patents by Inventor Brian Ritchey

Brian Ritchey 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: 9068435
    Abstract: A downhole assembly, such as a toe-to-heel gravel pack assembly, has a body with a body passage, outlet ports for slurry, and screens for fluid returns. An inner string deploys in the body to perform the toe-to-heel gravel packing. A telescoping adjustment device allows the inner string to space out properly when deployed to the toe of the assembly. Sealing surfaces or seats of a locating device in the body separate a sealable space and seal against seals on the inner string movably disposed therein. Fluid pumped in the string produces a pressure buildup when the string's port communicates with the sealable space. The pressure buildup indicates that the tool is positioned at a first location in the assembly, and other positions for placement of the tool can then be calculated therefrom.
    Type: Grant
    Filed: January 6, 2012
    Date of Patent: June 30, 2015
    Assignee: Weatherford Technology Holdings, LLC
    Inventors: John P. Broussard, Ronald van Petegem, Christopher Hall, Patrick J. Zimmerman, Brian Ritchey, Rockni Van Clief
  • Patent number: 9057251
    Abstract: A downhole assembly, such as a toe-to-heel gravel pack assembly, has a body with a body passage, outlet ports for slurry, and screens for fluid returns. An inner string deploys in the body to perform the toe-to-heel gravel packing. A telescoping adjustment device allows the inner string to space out properly when deployed to the toe of the assembly. Sealing surfaces of a locating device in the body separate a sealable space and seal against seals on the inner string movably disposed therein. Fluid pumped in the string produces a pressure buildup when the string's port communicates with the sealable space. The pressure buildup indicates that the tool is positioned at a first location in the assembly, and other positions for placement of the tool can then be calculated therefrom.
    Type: Grant
    Filed: January 6, 2012
    Date of Patent: June 16, 2015
    Assignee: Weatherford Technology Holdings, LLC
    Inventors: John P. Broussard, Ronald van Petegem, Christopher Hall, Patrick J. Zimmerman, Brian Ritchey, Rockni Van Clief
  • Publication number: 20120103631
    Abstract: A downhole assembly, such as a toe-to-heel gravel pack assembly, has a body with a body passage, outlet ports for slurry, and screens for fluid returns. An inner string deploys in the body to perform the toe-to-heel gravel packing. A telescoping adjustment device allows the inner string to space out properly when deployed to the toe of the assembly. Sealing surfaces or seats of a locating device in the body separate a sealable space and seal against seals on the inner string movably disposed therein. Fluid pumped in the string produces a pressure buildup when the string's port communicates with the sealable space. The pressure buildup indicates that the tool is positioned at a first location in the assembly, and other positions for placement of the tool can then be calculated therefrom.
    Type: Application
    Filed: January 6, 2012
    Publication date: May 3, 2012
    Applicant: WEATHERFORD/LAMB, INC.
    Inventors: John P. Broussard, Ronald van Petegem, Christopher Hall, Patrick J. Zimmerman, Brian Ritchey, Rockni Van Clief
  • Publication number: 20120103603
    Abstract: A downhole assembly, such as a toe-to-heel gravel pack assembly, has a body with a body passage, outlet ports for slurry, and screens for fluid returns. An inner string deploys in the body to perform the toe-to-heel gravel packing. A telescoping adjustment device allows the inner string to space out properly when deployed to the toe of the assembly. Sealing surfaces of a locating device in the body separate a sealable space and seal against seals on the inner string movably disposed therein. Fluid pumped in the string produces a pressure buildup when the string's port communicates with the sealable space. The pressure buildup indicates that the tool is positioned at a first location in the assembly, and other positions for placement of the tool can then be calculated therefrom.
    Type: Application
    Filed: January 6, 2012
    Publication date: May 3, 2012
    Applicant: WEATHERFORD/LAMB, INC.
    Inventors: John P. Broussard, Ronald van Petegem, Christopher Hall, Patrick J. Zimmerman, Brian Ritchey, Rockni Van Clief
  • Publication number: 20070294014
    Abstract: An Outrigger Obstruction Detection System for an Aerial Fire Truck that will warn the driver of an impending obstruction to an outrigger prior to full extension of the outrigger. The system comprises ultrasonic sensors located at or near each outrigger assembly on the aerial fire truck, which can be programmed to detect an object within the travel range of the outrigger. In addition, a control/indicator panel is mounted in the cab of the aerial fire truck. The control/indicator panel is positioned in the cab to allow the driver physical and visual access. The control/indicator panel contains the power switch, diagram of the truck and indicator lights used to warn the driver of an obstruction. The sensors provide an electrical signal to a control/indicator panel located in the cab of the aerial fire truck to alert the driver if an object is detected. This alert allows the driver to reposition the truck to clear the obstruction, which in turn reduces the time to react to the emergency.
    Type: Application
    Filed: February 9, 2007
    Publication date: December 20, 2007
    Inventors: Jon Green, Brian Ritchey
  • Patent number: 5171456
    Abstract: Method and apparatus are provided for machine separation of blood into blood components, wherein a preselected fluid such as anticoagulant is added to at least two different locations through the fluid flow path of the set, in order to promote the different functional characteristics in different blood components. The method results in reduced incidence of citrate reaction in the blood donor and increased platelet yield in platelet rich plasma collected during the procedure.
    Type: Grant
    Filed: June 14, 1990
    Date of Patent: December 15, 1992
    Assignee: Baxter International Inc.
    Inventors: Yean Yow Hwang, Brian Ritchey, Donald W. Schoendorfer