Patents by Inventor Siegfried Fuhrmann

Siegfried Fuhrmann 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).

  • Fitting for conduits with corrugated tubes and hoses
    Patent number: 4063757
    Abstract: The fitting has a main part which has two axially spaced corrugations, one for engaging the corrugations of the tube, the other engaging the hose projecting from the tube. A sleeve with outer corrugations engages the hose from the inside. Armoring is clamped separately onto the outside of the main part.
    Type: Grant
    Filed: September 1, 1976
    Date of Patent: December 20, 1977
    Assignee: Kabel-und Metallwerke Gutehoffnungshutte AG
    Inventor: Siegfried Fuhrmann
  • Flexible conduit
    Patent number: 3974862
    Abstract: An outer tube is corrugated helically or annularly and an inner, uncorrugated tube has axially and radially outwardly extending ribs engaging inwardly directed corrugation crests of the outer tube. Part of a fluid flow is diverted into the space between the tubes.
    Type: Grant
    Filed: April 28, 1975
    Date of Patent: August 17, 1976
    Assignee: Kabel-und Metallwerke Gutehoffnungshutte Aktiengesellschaft
    Inventor: Siegfried Fuhrmann