Patents by Inventor David Marak

David Marak 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).

  • Publication number: 20110255927
    Abstract: A drill saw includes a motor, a drive shaft rotationally driven by the motor for rotation of the drive shaft about a corresponding drive axis, a transmission cooperating with the drive shaft to convert the rotation of the drive shaft to a driven output. The transmission includes a shuttle member having first and second gears. The shuttle member is slidably mounted for translation between first and second positions. A rotary motion-to-linearly reciprocating, motion converter operatively cooperates with the first gear when the shuttle member is in the first position so that a first driven output drives an output shaft reciprocatingly and linearly along an output axis. A rotary motion-to-rotary motion coupler operatively cooperates with the second gear when the shuttle member is in the second position so that a second driven output drives the output shaft rotationally about the output axis.
    Type: Application
    Filed: April 16, 2010
    Publication date: October 20, 2011
    Inventors: Michael Boudreau, Carl Flatman, David Marak, Troy Karius