Patents by Inventor Heinz-Helmut Schramm

Heinz-Helmut Schramm 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: 6462295
    Abstract: In a high-voltage power breaker having two rated current contact pieces and two arc contact pieces as well as an insulating nozzle, a filling body is provided, which is mounted on this insulating nozzle, surrounds the insulating nozzle in an annular shape and is composed of an electrically insulating material having a high dielectric constant, in order to influence the electric field in the isolating gap.
    Type: Grant
    Filed: July 19, 2001
    Date of Patent: October 8, 2002
    Assignee: Siemens Aktiengesellschaft
    Inventors: Hartmut Knobloch, Heinz-Helmut Schramm
  • Patent number: 4906935
    Abstract: To check the presence of operating vacuum in vacuum switches, high voltage can be applied between the contacts at a given contact spacing and the dielectric strength can be tested. According to the invention, the procedure for vacuum monitoring is that a contact spacing (h) below the nominal stroke of the vacuum switch is selected and that the X-radiation generated at this contact spacing (h) and high voltage (U) in vacuum due to the field electron emission between the contacts by the contact surfaces acting as anode is acquired and evaluated as proof of the presence of operating vacuum inside the switching tube. This method can preferably be applied to encapsulated vacuum switching tubes, in particular to SF.sub.6 -insulated switching facilities.
    Type: Grant
    Filed: September 29, 1988
    Date of Patent: March 6, 1990
    Assignee: Siemens Aktiengesellschaft
    Inventors: Ruediger Hess, Wilfried Kuhl, Leonhard Klug, Wolfgang Schilling, Peter Trentin, Heribert Weber, Wolfgang Schlenk, Heinz-Helmut Schramm
  • Patent number: 4151391
    Abstract: A contact arrangement for a pressurized-gas circuit braker, wherein the contact arrangement comprises a first tubular contact member and a second tubular contact member axially arranged therewith. The contact arrangement is further provided with a hollow cylinder means of ferromagnetic material which is arranged in the interior of the first tubular member and is formed from a multiplicity of laminated metal washers which are insulated from one another and are arranged axially with respect to the first tubular member.
    Type: Grant
    Filed: May 9, 1977
    Date of Patent: April 24, 1979
    Assignee: Siemens Aktiengesellschaft
    Inventors: Klaus-Peter Rolff, Heinz-Helmut Schramm
  • Patent number: 4074064
    Abstract: A gas-insulated, high-voltage apparatus wherein arcs can develop includes an encapsulation and at least one electrical conductor made of aluminum or an alloy thereof which is held in spaced relation to the encapsulation by insulators. A surface is arranged at the conductor at locations thereof subject to the greatest arc activity. The surface faces the encapsulation and is defined by an electrically conductive, arc-resistant material. An excessive stress and endangerment of the encapsulation because of arc action is thereby prevented.
    Type: Grant
    Filed: November 19, 1974
    Date of Patent: February 14, 1978
    Assignee: Siemens Aktiengesellschaft
    Inventors: Kurt Muller, Friedrich Richter, Heinz-Helmut Schramm