Patents by Inventor Darcy A. Downs

Darcy A. Downs 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).

  • Apparatus and method for coaxially joining components to resist relative rotational and longitudinal movement
    Patent number: 9587441
    Abstract: A method and apparatus for joining first and second bodies coaxially together to resist relative axial and rotational movement between the bodies. A male portion of the first body is received in a complementary female portion of the second body, and the male and female portions are aligned axially on a common axis such that respective cooperating grooves in opposing cylindrical or tapered complementary surfaces of the male and female portions are aligned to form a plurality of passageways or a passageway having a plurality of passageway portions, between the opposing cylindrical or tapered complementary surfaces. At least two of the passageways or at least two of the passageway portions are disposed at different angles to the common axis.
    Type: Grant
    Filed: November 1, 2012
    Date of Patent: March 7, 2017
    Assignee: Evolution Engineering Inc.
    Inventors: Aaron W. Logan, David A. Switzer, Patrick R. Derkacz, Justin C. Logan, Daniel W. Ahmoye, Darcy A. Downs, Mojtaba Kazemi Miraki
  • APPARATUS AND METHOD FOR COAXIALLY JOINING COMPONENTS TO RESIST RELATIVE ROTATIONAL AND LONGITUDINAL MOVEMENT
    Publication number: 20150292274
    Abstract: A method and apparatus for joining first and second bodies coaxially together to resist relative axial and rotational movement between the bodies. A male portion of the first body is received in a complementary female portion of the second body, and the male and female portions are aligned axially on a common axis such that respective cooperating grooves in opposing cylindrical or tapered complementary surfaces of the male and female portions are aligned to form a plurality of passageways or a passageway having a plurality of passageway portions, between the opposing cylindrical or tapered complementary surfaces. At least two of the passageways or at least two of the passageway portions are disposed at different angles to the common axis.
    Type: Application
    Filed: November 1, 2012
    Publication date: October 15, 2015
    Inventors: Aaron W. Logan, David Switzer, Patrick R. Derkacz, Justin C. Logan, Daniel W. Ahmoye, Darcy A. Downs