Patents by Inventor Rolf Bertram

Rolf Bertram 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).

  • VALVE ISLAND FOR A HYDRAULIC ASSEMBLY FOR A DIALYSIS MACHINE
    Publication number: 20220409787
    Abstract: A valve island for a hydraulic assembly and a hydraulic assembly featuring a valve island. The valve island and the hydraulic assembly are used with a dialysis machine. The valve island has a main part in which at least one fluid flow duct is formed. The main part is produced by additive manufacturing or injection molding. The hydraulic assembly includes a support on which at least one valve island is arranged directly or indirectly.
    Type: Application
    Filed: November 25, 2020
    Publication date: December 29, 2022
    Inventors: Rolf Bertram, Peter Maenz
  • Switch contact with a weight-reduced contact spring
    Patent number: 9589740
    Abstract: In an electrical switch, in particular an electrical microswitch, has at least one electrical contact designed as a hollow-shape section of a component of an electrically conducting material. In this electrical switch, the occurrence of vibrations with the introduction onto an opposing contact is prevented.
    Type: Grant
    Filed: August 17, 2011
    Date of Patent: March 7, 2017
    Assignee: JOHNSON ELECTRIC OLDENBURG GMBH & CO. KG
    Inventors: Rolf Bertram, Martin Koepsell, Bruno Stenzel
  • SWITCH CONTACT WITH A WEIGHT-REDUCED CONTACT SPRING
    Publication number: 20110297520
    Abstract: In an electrical switch, in particular an electrical microswitch, has at least one electrical contact designed as a hollow-shape section of a component of an electrically conducting material. In this electrical switch, the occurrence of vibrations with the introduction onto an opposing contact is prevented.
    Type: Application
    Filed: August 17, 2011
    Publication date: December 8, 2011
    Inventors: Rolf BERTRAM, Martin Koepsell, Bruno Stenzel
  • Switch contact with a weight-reduced contact spring
    Patent number: 8053693
    Abstract: In an electrical switch, in particular an electrical microswitch, has at least one electrical contact designed as a hollow-shape section of a component of an electrically conducting material. In this electrical switch, the occurrence of vibrations with the introduction onto an opposing contact is prevented.
    Type: Grant
    Filed: December 15, 2010
    Date of Patent: November 8, 2011
    Assignee: Saia-Burgess Oldenburg GmbH & Co., KG
    Inventors: Rolf Bertram, Martin Koepsell, Bruno Stenzel
  • SWITCH CONTACT WITH A WEIGHT-REDUCED CONTACT SPRING
    Publication number: 20110083947
    Abstract: In an electrical switch, in particular an electrical microswitch, has at least one electrical contact designed as a hollow-shape section of a component of an electrically conducting material. In this electrical switch, the occurrence of vibrations with the introduction onto an opposing contact is prevented.
    Type: Application
    Filed: December 15, 2010
    Publication date: April 14, 2011
    Inventors: Rolf Bertram, Martin Koepsell, Bruno Stenzel
  • Switch contact with a weight-reduced contact spring
    Publication number: 20080156625
    Abstract: In an electrical switch, in particular an electrical microswitch, has at least one electrical contact designed as a hollow-shape section of a component of an electrically conducting material. In this electrical switch, the occurrence of vibrations with the introduction onto an opposing contact is prevented.
    Type: Application
    Filed: September 18, 2007
    Publication date: July 3, 2008
    Inventors: Rolf Bertram, Martin Koepsell, Bruno Stenzel
  • Method for dividing a strand into slabs
    Patent number: 4297151
    Abstract: A method of cutting a cast strand into longitudinal sections is disclosed. The method comprises initially severing said strand transversely to form a slab, transporting said slab to a first longitudinal cutting means where it is longitudinally cut. The strand is cut transversely a second time to form a second slab which is transported to a second longitudinal cutting means where it is longitudinally cut.
    Type: Grant
    Filed: December 18, 1979
    Date of Patent: October 27, 1981
    Assignee: Thyssen Aktiengesellschaft vormals August Thyssen-Hutte
    Inventors: Erich Hoffken, Werner Kleine-Kleffmann, Rolf Bertram, Karl-Heinz Abele, Gunter Michalski
  • Device for dividing a strand into slabs
    Patent number: 4208039
    Abstract: A device for longitudinal cutting cast strands is disclosed. Disclosed is a means for transversely severing a strand into slabs, feeding the slabs selectively to a plurality of longitudinal cutting means and longitudinally cutting said slabs therein. Also disclosed is a novel longitudinal cutting means comprising a flame cutter and a cutting point opening in registry therewith.
    Type: Grant
    Filed: March 9, 1978
    Date of Patent: June 17, 1980
    Assignee: Thyssen Aktiengesellschaft vormals August Thyssen-Hutte
    Inventors: Erich Hoffken, Werner Kleine-Kleffmann, Rolf Bertram, Karl-Heinz Abele, Gunter Michalski