Patents by Inventor David C. Sparkes

David C. Sparkes 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: 6775916
    Abstract: A layout tool for laying out or “marking” positions at a predetermined spacing for the attachment of studs having a nominal thickness to a length of dimensioned lumber comprising a plate, when framing walls during construction of a building. The layout tool includes an elongated rail for placement against the plate, and a first stud marking guide extending perpendicularly from the elongated rail. The first stud marking guide has left and right side edges, and width between the side edges corresponding to the nominal thickness of the studs. A separate stud marking guide extends perpendicularly from the elongated rail. The second stud marking guide likewise has left and right side edges and a width between the side edges corresponding to the nominal thickness of the studs. The left edge of the second stud marking guide is spaced from the left edge of the first stud marking guide a distance equal to the predetermined stud spacing.
    Type: Grant
    Filed: May 17, 2001
    Date of Patent: August 17, 2004
    Inventor: David C. Sparkes
  • Publication number: 20030145475
    Abstract: A layout tool for laying out or “marking” positions at a predetermined spacing for the attachment of studs having a nominal thickness to a length of dimensioned lumber comprising a plate, when framing walls during construction of a building. The layout tool includes an elongated rail for placement against the plate, and a first stud marking guide extending perpendicularly from the elongated rail. The first stud marking guide has left and right side edges, and width between the side edges corresponding to the nominal thickness of the studs. A separate stud marking guide extends perpendicularly from the elongated rail. The second stud marking guide likewise has left and right side edges and a width between the side edges corresponding to the nominal thickness of the studs. The left edge of the second stud marking guide is spaced from the left edge of the first stud marking guide a distance equal to the predetermined stud spacing.
    Type: Application
    Filed: May 17, 2001
    Publication date: August 7, 2003
    Inventor: David C. Sparkes