Patents by Inventor Hansruedi Zahner

Hansruedi Zahner 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).

  • Fiberglass reinforced plastic insulating member submitted to mechanical efforts within a high-voltage switching enclosure containing sulphur-hexafluoride gas
    Patent number: 4375527
    Abstract: The resistance of insulating pieces made of fiberglass reinforced plastics against the decay products of SF.sub.6, such as occur within sealed high-voltage switching devices is unexpectedly enhanced by the use of a reinforcing fiberglass made of a low-alkali silicate glass containing neither boron nor boron-compounds.
    Type: Grant
    Filed: October 30, 1980
    Date of Patent: March 1, 1983
    Assignee: Sprecher & Schuh AG
    Inventor: Hansruedi Zahner, deceased
  • Electric insulator
    Patent number: 4067925
    Abstract: Electric insulators are prepared from a mixture of a curable carrier reaction resin, a hardener for the carrier reaction resin and a filler which is a ground, hardened filler reaction resin. The insulators are advantageously used in electric devices containing an electronegative gas.
    Type: Grant
    Filed: June 11, 1976
    Date of Patent: January 10, 1978
    Assignee: Sprecher & Schuh AG
    Inventor: Hansruedi Zahner
  • High voltage switching device with calcium-aluminum glass filled resin insulator support
    Patent number: 4020306
    Abstract: An electrical device having arc-prone electrical contacts within a container and an arc-resistant dielectric halogenated gas within the container. Also within the container is a filled resin electrical insulator. The filled resin comprises a cured epoxy resin and a filler of particles of calcium-aluminum glass.
    Type: Grant
    Filed: December 3, 1974
    Date of Patent: April 26, 1977
    Inventors: Hansruedi Zahner, Gerd Muller