Patents Assigned to Hertwich Engineering GmbH
  • Patent number: 12042857
    Abstract: An ingot mould for continuous casting, with a lubricant channel (2) opening to the running surface (1), has a distribution portion (3) adjoining the running surface (1). In an ingot mould of the aforementioned type a uniform lubrication of the running surface of the ingot mould is possible using as few wear-susceptible components as possible, where the flow resistance within the distribution portion (3) increases in the direction of the running surface (1) and is constant in a discharge region (4) of the distribution portion (3) adjoining the running surface parallel to the running surface (1).
    Type: Grant
    Filed: December 2, 2021
    Date of Patent: July 23, 2024
    Assignee: Hertwich Engineering GmbH
    Inventor: Christian Karl Fellsner
  • Patent number: 11585531
    Abstract: A method for continuous firing of combustion chambers with at least three regenerative burners, wherein a first regenerative burner cyclically in the combustion mode conveys supply air and a second regenerative burner in the exhaust mode conveys exhaust air. To avoid escape of hazardous process gases from the combustion chamber into the environment and high carbon monoxide emissions, and to provide energy-efficient firing operation despite use of compact regenerators, the volume flow of the supply or exhaust air through the first or second regenerative burner is reduced continuously and in counter-cycle mode to the volume flow of supply or exhaust air through a third regenerative burner at constant combustion chamber pressure until the first or second regenerative burner is flow-free.
    Type: Grant
    Filed: March 23, 2020
    Date of Patent: February 21, 2023
    Assignee: Hertwich Engineering GmbH
    Inventor: Manuel Berrer
  • Patent number: 8685139
    Abstract: A method is described for smelting fragmentized aluminum scrap, with the aluminum scrap to be smelted being molten in a furnace after thermal pre-treatment in a hot-gas stream. In order to provide advantageous process conditions it is proposed that the aluminum scrap is subjected at first in a continuous flow of material to the thermal treatment and is smelted thereafter, and that from the hot gas stream guided in a circulation for the thermal treatment of the aluminum scrap a partial stream is branched off and is guided into the furnace.
    Type: Grant
    Filed: February 24, 2006
    Date of Patent: April 1, 2014
    Assignee: Hertwich Engineering GmbH
    Inventors: Hubert Mayringer, Günther Hertwich, Franz Niedermair
  • Patent number: 6634489
    Abstract: A walking beam conveyor for a continuous furnace (7) for heating aluminium bars (4) with walking beams and fixed beams (1, 2) is described, which support bar supports (3) which can be restrictively pivoted transversely to the beams (1, 2). In order to create advantageous structural conditions, it is proposed that the bar supports (3) have support members (10) for the aluminium bars (4) which can be inserted into recesses (11).
    Type: Grant
    Filed: January 14, 2002
    Date of Patent: October 21, 2003
    Assignee: Hertwich Engineering GmbH
    Inventor: Günther Kraus
  • Publication number: 20020092733
    Abstract: A walking beam conveyor for a continuous furnace (7) for heating aluminium bars (4) with walking beams and fixed beams (1, 2) is described, which support bar supports (3) which can be restrictively pivoted transversely to the beams (1, 2). In order to create advantageous structural conditions, it is proposed that the bar supports (3) have support members (10) for the aluminium bars (4) which can be inserted into recesses (11).
    Type: Application
    Filed: January 14, 2002
    Publication date: July 18, 2002
    Applicant: Hertwich Engineering GmbH
    Inventor: Gunther Kraus