Patents by Inventor Dan E. Muller

Dan E. Muller 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: 4413785
    Abstract: A variable pressure wand or gun for connection to the flexible conduit of a pressure fluid cleaning system such as used in car washes and the like. Parallel high pressure and low pressure barrels are connected by a fluid passage having a normally open pressure fluid discharge valve plunger therein. A selectively hand operable grip and lever are provided for closing or seating the valve plunger against fluid pressure in the system, the degree of closing being proportional to the force applied to the grip. The high pressure barrel is equipped with a spray or jet nozzle and the flow of fluid to the low pressure barrel is controlled by the operation of the valve plunger.
    Type: Grant
    Filed: September 14, 1981
    Date of Patent: November 8, 1983
    Assignee: Carroll D. Engelbert
    Inventors: Carrol D. Engelbert, Larry M. Muller, Dan E. Muller