Patents by Inventor Bernt Schroer

Bernt Schroer 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: 6527264
    Abstract: A torsion spring which is coiled or wound from spring steel wire is provided for counterbalancing weight, particularly in sectional doors. At least one of the two spring ends of the torsion spring has a connection diameter which is reduced with regard to the operational diameter of the torsion spring in a main portion between the spring ends. This connection diameter is adjusted to the outer diameter of a shaft on which the torsion spring is to be arranged in such a way that the torsion spring is guided on the shaft in a radial direction by means of any portion of the torsion spring having the connection diameter.
    Type: Grant
    Filed: July 9, 2001
    Date of Patent: March 4, 2003
    Inventor: Bernt Schroer
  • Publication number: 20020003328
    Abstract: A torsion spring which is coiled or wound from spring steel wire is provided for counter-balancing weight, particularly in sectional doors. At least one of the two spring ends of the torsion spring has a connection diameter which is reduced with regard to the operational diameter of the torsion spring in a main portion between the spring ends. This connection diameter is adjusted to the outer diameter of a shaft on which the torsion spring is to be arranged in such a way that the torsion spring is guided on the shaft in a radial direction by means of any portion of the torsion spring having the connection diameter.
    Type: Application
    Filed: July 9, 2001
    Publication date: January 10, 2002
    Inventor: Bernt Schroer
  • Patent number: 5050275
    Abstract: Hose clamps fashioned from wire have radially outwardly extending end portions which are connected to overlapping clamping member which is placed in compression when the hose clamp is tightened. In some embodiments the clamping member is a helically wound coil spring which may be integral with the wire or may be a separate element. In other embodiments, the clamping member is a screw-like member. Threads for receiving the screw may be integrally formed in the wire. Various connectins may be provided to attach the free end of the screw to the other end of the tightenable wire. For example, pins and cooperating holes may be for this purpose. If desired, multiple wire members can be serially connected to one another. And, the wire can be doubled on itself with a threaded lug or a hook being formed at the bent end. Coil springs and bights can be used to accommodate dimensional variations in the member being clamped.
    Type: Grant
    Filed: January 16, 1990
    Date of Patent: September 24, 1991
    Assignee: Markisches Federwerk GmbH & Co. KG
    Inventors: Bernt Schroer, Ernst-Udo Ebert