Patents by Inventor Ernst Doring

Ernst Doring 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).

  • Lapped flange for connecting pipes and method for producing such a lapped flange
    Patent number: 6722707
    Abstract: A loose flange for connecting pipes, the flange having radially inwardly oriented and elastically deformable oblique surfaces. The clamping force capacity of the loose flange is improved as a result. A method for producing the loose flange is also disclosed.
    Type: Grant
    Filed: March 29, 2002
    Date of Patent: April 20, 2004
    Assignee: Georg Fischer Rohrleitungssysteme AG
    Inventors: Erich Schurmann, Ernst Doring
  • Discontinuously operating winding machine for winding on material to be wound
    Patent number: 5775628
    Abstract: A material winding and cutting machine is capable of automatically winding and cutting specified lengths of a material formed on a removable workpiece. Winding spindles (10 and 11) are rotatably mounted to drum (4) and revolve with the rotation of the drum between a winding station and a doffing station. Tubes (20) and fixed to the spindles (10 and 11) to receive the material (13). The machine includes a brake (27) which stops rotation of the material (13) about a winding spindle (10) during the cutting operation. The brake assembly stops the winding spindle to provide for an accurate cutting of the material to a predetermined length. Since the material does not rotate about the winding spindle during the cutting operation, the winding spindle incorporates a force storage device (28) to provide the needed tension to the material for proper cutting.
    Type: Grant
    Filed: October 11, 1996
    Date of Patent: July 7, 1998
    Assignee: Georg Sahm GmbH & Co. KG
    Inventors: Helmut Rabe, Ernst Doring