Patents by Inventor Siegfried Heilenz

Siegfried Heilenz 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).

  • Pulverizer with air filtering means
    Patent number: 4988046
    Abstract: Pulverizers, which are driven by motors and have an inlet chute and a pulverizing device connected to a collecting reservoir for minimizing of the created amount of dust are, in order to assure with a simple and safe design and easy operation, constructed such that the pulverizer (1) is arranged in a housing (6), which has an air-inlet opening (22) and an air outlet (8). The air outlet (8) is arranged on the bottom side of the housing (6) and is connected to a vacuum source. A filter (9) is provided in the area of the air outlet (8), which can be connected to an air source loading the filter 9) with compressed air in counter-flow direction.
    Type: Grant
    Filed: March 27, 1989
    Date of Patent: January 29, 1991
    Inventor: Siegfried Heilenz
  • Method and apparatus for operating a water-jet pump
    Patent number: 4310287
    Abstract: A method for operating a water-jet pump, in which the water needed for operation of the pump is recirculated in a cycle. The water is pressurized by means of compressed air at a substantially constant air pressure and the compressed air is used to drive out the water through the water-jet pump. Expanding the compressed air in a defined expansion space withdraws heat from the water by absorbing such heat in the air during and after its expansion. Apparatus for operating a water-jet pump includes a pair of ejecting receptacles and a first water valve for alternate connection of the ejecting receptacles to the pressure side of the water-jet pump. Second water valves return to the ejecting receptacles water which has been discharged from the water-jet pump.
    Type: Grant
    Filed: November 16, 1979
    Date of Patent: January 12, 1982
    Inventor: Siegfried Heilenz
  • Method and apparatus for operating a water-jet pump
    Patent number: RE31592
    Abstract: A method for operating a water-jet pump, in which the water needed for operation of the pump is recirculated in a cycle. The water is pressurized by means of compressed air at a substantially constant air pressure and the compressed air is used to drive out the water through the water-jet pump. Expanding the compressed air in a defined expansion space withdraws heat from the water by absorbing such heat in the air during and after its expansion. Apparatus for operating a water-jet pump includes a pair of ejecting receptacles and a first water valve for alternate connection of the ejecting receptacles to the pressure side of the water-jet pump. Second water valves return to the ejecting receptacles water which has been discharged from the water-jet pump.
    Type: Grant
    Filed: August 19, 1982
    Date of Patent: May 29, 1984
    Inventor: Siegfried Heilenz