Patents by Inventor Dave Switzer

Dave Switzer 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).

  • DEVICE AND METHOD FOR SECURING CONDUIT INTERIOR WEAR SLEEVE
    Publication number: 20180044999
    Abstract: A device and method for securing a sleeve (for sacrificial wear and/or electrical isolation) inside a conduit. In one embodiment, the retention device sits adjacent one end of the sleeve and comprises a ring having a protuberance or lip extending parallel to and against the end of the sleeve, thus pressing the end of the sleeve against the inner surface of the conduit. This has the advantage, in situations where fluids are flowing through the conduit, of reducing the risk of fluids moving behind the sleeve and collapsing it inwardly.
    Type: Application
    Filed: February 11, 2016
    Publication date: February 15, 2018
    Inventors: Luke Anthony Stack, Dave Switzer, Justin Christopher Logan, Aaron William Logan
  • Fluid erosion protection washer for rotating shaft in MWD tool
    Patent number: 7839719
    Abstract: A shaft protection washer to protect a rotating shaft in a “measurement while drilling” (MWD) tool. Use of the shaft protection washer renders the rotating shaft less susceptible to erosion from the drilling fluid flowing between the rotating component and the stationary component.
    Type: Grant
    Filed: February 26, 2009
    Date of Patent: November 23, 2010
    Assignee: Schlumberger Technology Corporation
    Inventors: Anthony R. Dopf, Trang Le, Derek Logan, Timothy Neff, Wendall Siemens, Dave Switzer
  • FLUID EROSION PROTECTION WASHER FOR ROTATING SHAFT IN MWD TOOL
    Publication number: 20090224193
    Abstract: A shaft protection washer to protect a rotating shaft in a “measurement while drilling” (MWD) tool. Use of the shaft protection washer renders the rotating shaft less susceptible to erosion from the drilling fluid flowing between the rotating component and the stationary component.
    Type: Application
    Filed: February 26, 2009
    Publication date: September 10, 2009
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Anthony R. Dopf, Trang Le, Derek Logan, Timothy Neff, Wendall Siemens, Dave Switzer
  • Fluid erosion protection washer for rotating shaft in MWD tool
    Patent number: 7532540
    Abstract: A shaft protection washer to protect a rotating shaft in a “measurement while drilling” (MWD) tool. Use of the shaft protection washer renders the rotating shaft less susceptible to erosion from the drilling fluid flowing between the rotating component and the stationary component.
    Type: Grant
    Filed: May 30, 2006
    Date of Patent: May 12, 2009
    Assignee: Extreme Engineering Ltd.
    Inventors: Anthony R. Dopf, Trang Le, Derek Logan, Timothy Neff, Wendall Siemens, Dave Switzer
  • Fluid erosion protection washer for rotating shaft in MWD tool
    Publication number: 20070045583
    Abstract: A shaft protection washer to protect a rotating shaft in a “measurement while drilling” (MWD) tool. Use of the shaft protection washer renders the rotating shaft less susceptible to erosion from the drilling fluid flowing between the rotating component and the stationary component.
    Type: Application
    Filed: May 30, 2006
    Publication date: March 1, 2007
    Inventors: Anthony Dopf, Trang Le, Derek Logan, Timothy Neff, Wendall Siemens, Dave Switzer