Patents by Inventor Scott P. Ellisor

Scott P. Ellisor 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: 10344896
    Abstract: In one embodiment, a vertical ratcheting anti-rotation device includes a ratchet mechanism pivotally coupled at a proximal end to a first tubular member in a first recessed area located on a shoulder of the first tubular member. A distal end of the ratchet mechanism includes a first plurality of angled teeth and a spring allowing the ratchet mechanism to pivot in a vertical direction within the first recessed area. The anti-rotation device may also include a toothed insert mechanically coupled to a second tubular member in a second recessed area located on a shoulder of the second tubular member. The toothed insert may include a second plurality of angled teeth positioned to engage the first plurality of angled teeth of the ratchet mechanism. The spring is compressible during coupling of the tubular members to allow the ratchet mechanism to move vertically over the second plurality of angled teeth.
    Type: Grant
    Filed: February 10, 2017
    Date of Patent: July 9, 2019
    Assignee: Dril-Quip, Inc.
    Inventors: Scott P. Ellisor, Christopher C. Mayer, John E. Nelson, Mark Manning
  • Publication number: 20180231155
    Abstract: In one embodiment, a vertical ratcheting anti-rotation device includes a ratchet mechanism pivotally coupled at a proximal end to a first tubular member in a first recessed area located on a shoulder of the first tubular member. A distal end of the ratchet mechanism includes a first plurality of angled teeth and a spring allowing the ratchet mechanism to pivot in a vertical direction within the first recessed area. The anti-rotation device may also include a toothed insert mechanically coupled to a second tubular member in a second recessed area located on a shoulder of the second tubular member. The toothed insert may include a second plurality of angled teeth positioned to engage the first plurality of angled teeth of the ratchet mechanism. The spring is compressible during coupling of the tubular members to allow the ratchet mechanism to move vertically over the second plurality of angled teeth.
    Type: Application
    Filed: February 10, 2017
    Publication date: August 16, 2018
    Inventors: Scott P. Ellisor, Christopher C. Mayer, John E. Nelson, Mark Manning