Patents by Inventor Stefan Ruf

Stefan Ruf 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: 6851946
    Abstract: A hot runner manifold system for an injection mould for simultaneous injection moulding of several parts or of large parts, having a multiplicity of injection orifices (24). The orifices are designed for delivering injection moulding compound substantially simultaneously under high pressure and at high temperatures into specified mould zones. The mould zones are provided at least partially on main manifolds (11, 12, 13, 14) that are separated from one another, which main manifolds have hot runners (17, 19, 21, 23) and are connected via at least one pre-manifold (2). The pre-manifold has hot runners (4, 7), and is connected to a sprue (1) for receipt of the injection moulding compound.
    Type: Grant
    Filed: November 4, 2000
    Date of Patent: February 8, 2005
    Assignee: MHT Mold & Hotrunner Technology AG
    Inventors: Werner Plass, Stefan Ruf