Patents by Inventor Paul Grohmann

Paul Grohmann 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).

  • Process and device to transversely cut metal workpieces
    Patent number: 5102473
    Abstract: Metal pieces such as blooms, continuously cast billets and cogged ingots, are cut by a deep-frozen, liquid cutting medium, in particular liquid oxygen, exiting from a nozzle at high pressure. The workpiece is moved in the longitudinal direction and the nozzle is moved in the crosswise direction at an acute setting angle with respect to the longitudinal direction. As a result, it is possible to dispense with the travel segment of the workpiece and of the cutting nozzle in the longitudinal direction of the workpiece during the cutting process.
    Type: Grant
    Filed: July 31, 1990
    Date of Patent: April 7, 1992
    Assignee: Messer Griesheim
    Inventor: Paul Grohmann
  • Process and device for autogenous cutting with liquid oxygen
    Patent number: 4995918
    Abstract: In autogenous cutting oxygen in liquid form is put under high pressure and flows to the cutting site through a liquid jet cutting nozzle. An increase in the cutting speed and in the cutting quality level is achieved in that the super-cooled liquid oxygen jet emerging from the nozzle has a temperature that is below the boiling temperature of the oxygen at ambient pressure.
    Type: Grant
    Filed: July 31, 1989
    Date of Patent: February 26, 1991
    Assignee: Messer Grieshiem GmbH
    Inventor: Paul Grohmann
  • Cooling device for liquefied gas
    Patent number: 4953358
    Abstract: A cooling device for cooling a liquefied gas having a low boiling point includes two cooling gas containers connected to each other by vacuum-insulated cooling-line segments. The liquid-gas line runs continuously through the cooling-line segments and the cooling-gas containers.
    Type: Grant
    Filed: March 13, 1989
    Date of Patent: September 4, 1990
    Assignee: Messer Griesheim GmbH
    Inventor: Paul Grohmann
  • Liquid-jet cutting torch
    Patent number: 4938455
    Abstract: A liquid-jet cutting torch for cutting with liquid oxygen, includes a cutting-oxygen line surrounded all the way to the outlet of the cutting nozzle by a cooling-medium line, by a vacuum insulation and by a cooling-water casing.
    Type: Grant
    Filed: March 13, 1989
    Date of Patent: July 3, 1990
    Assignee: Messer. Griesheim GmbH
    Inventor: Paul Grohmann
  • Process and device for the longitudinal cutting of continuous castings
    Patent number: 4908070
    Abstract: In longitudinal cutting of continuous castings with high pressure, liquid stream cutting tips, a preheating torch conducted to the liquid stream cutting tip is used for heating up to the ignition temperature.
    Type: Grant
    Filed: August 26, 1988
    Date of Patent: March 13, 1990
    Assignee: Messer Griesheim GmbH
    Inventor: Paul Grohmann
  • Process for autogenic flame cutting with oxygen
    Patent number: 4765846
    Abstract: A process for autogenic flame cutting with oxygen includes bringing the oxygen while in the liquid state to a high pressure and feeding the oxygen to the cutting location via a liquid jet cutting nozzle.
    Type: Grant
    Filed: December 9, 1986
    Date of Patent: August 23, 1988
    Assignee: Messer. Griesheim GmbH
    Inventor: Paul Grohmann