Patents by Inventor Donald L. Muhlnickel

Donald L. Muhlnickel 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: 7070297
    Abstract: A flashlight having one or more storage areas while providing a means to attach useful accessories such as a can of pepper spray, compass or thermometer. The features of the invention allow the compass to be conveniently removed while still allowing the flashlight to operate. A portion of the storage area has a greater diameter than the tubular body of the flashlight to assist holding of the flashlight while separate storage spaces allow storing of spare batteries, light bulbs, other loose items or combinations of the like. In a separate feature of the invention, the intermediate cap has a cavity sized to receive and frictionally hold the flashlight.
    Type: Grant
    Filed: June 18, 2003
    Date of Patent: July 4, 2006
    Inventor: Donald L. Muhlnickel, Jr.
  • Patent number: 4635852
    Abstract: A hydraulic valve arrangement is provided for simultaneously opening or closing off the flow of fluid from a plurality of separate and distinct inlet fluid lines to a plurality of concentric fluid passageways connected to an internal mixing chamber having an outlet nozzle leading therefrom. The valve arrangement includes a spool valve axially slidable within a bore of a housing. This spool valve includes at least a central fluid passageway therethrough and another, concentric fluid passageway defined between the spool valve and the bore. When the spool valve is in the open position, the inlet fluid lines are in fluid communication with both the central passageway and the concentric passageway. Fluid flowing through these passageways enters into the interior mixing chamber and exits that chamber through the outlet nozzle. When the spool valve is in the closed position, flow from the inlet fluid lines to the passageways is cut off.
    Type: Grant
    Filed: July 19, 1984
    Date of Patent: January 13, 1987
    Assignee: Graves Spray Supply Company
    Inventor: Donald L. Muhlnickel, Jr.
  • Patent number: D504739
    Type: Grant
    Filed: April 27, 2004
    Date of Patent: May 3, 2005
    Inventor: Donald L. Muhlnickel
  • Patent number: D529418
    Type: Grant
    Filed: December 28, 2005
    Date of Patent: October 3, 2006
    Inventor: Donald L. Muhlnickel