Patents by Inventor Andrew M. Olson

Andrew M. Olson 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).

  • Airfoil changeover device
    Patent number: 5209152
    Abstract: An air operated reciprocating piston pump having a differential area piston is provided with an annular shaped airfoil device having a chevron cross-section and which is located beneath the bottom air intake plate to utilize increasing air velocity at the initiation of bottom changeover in order to assure more reliable changeover.
    Type: Grant
    Filed: March 31, 1992
    Date of Patent: May 11, 1993
    Assignee: Graco, Inc.
    Inventor: Andrew M. Olson
  • Construction glove
    Patent number: D653401
    Type: Grant
    Filed: March 14, 2011
    Date of Patent: January 31, 2012
    Assignee: Tenacious Holdings, Inc.
    Inventors: Andrew M. Olson, Thomas F. Votel
  • Glove
    Patent number: D722208
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: February 3, 2015
    Assignee: Tenacious Holdings, Inc.
    Inventors: Thomas Votel, Andrew M Olson