Patents by Inventor Marius H. Lubbers

Marius H. Lubbers 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).

  • Rail clamp
    Patent number: 4399941
    Abstract: A rail clamp in the form of two parts curved in the shape of a C and interconnected by a tie loop whereby the end portions of said C's exhibit fingers and the tie loop has a lock-like part for receiving at least one of said fingers.
    Type: Grant
    Filed: April 10, 1981
    Date of Patent: August 23, 1983
    Assignee: Everts & Van der Weyden Exploitatiemaatschappij Ewem B.V.
    Inventor: Marius H. Lubbers
  • Concrete sleeper with the fastening housing
    Patent number: 4349150
    Abstract: A fastening housing for a rail clamp comprising a carrier plate and a superstructure having cavities for accommodating an end part and a rail clamp, said carrier plate having substantially vertically directed anchoring members extending in a concrete sleeper wherein the housing is made from synthetic resin.
    Type: Grant
    Filed: April 23, 1980
    Date of Patent: September 14, 1982
    Assignee: Everts & Van der Weyden Exploitatiemaatschappij
    Inventor: Marius H. Lubbers
  • Method of manufacturing a resilient, single or double C-shaped rail clamp
    Patent number: 4281529
    Abstract: A method of manufacturing a resilient, C-shaped rail clamp wherein rod-shaped material is clamped tight at one end and starting from the clamped end the rod is deformed into the desired shape by a movement of a roller towards the free end while exerting local pressure.
    Type: Grant
    Filed: May 21, 1979
    Date of Patent: August 4, 1981
    Assignee: Everts & van der Weyden Exploitatiemaatschappij Ewem N.V.
    Inventor: Marius H. Lubbers
  • Holder for a guiding structure
    Patent number: 4267970
    Abstract: A holder for arranging a rail on a supporting concrete or wooden sleeper, comprising an open housing, which can be engaged by fasteners, comprising anchoring parts, which are embedded in a concrete sleeper or pierced into screwholes in a wooden sleeper, the anchoring parts being located at the corners of an imaginary triangle.
    Type: Grant
    Filed: June 13, 1979
    Date of Patent: May 19, 1981
    Assignee: Everts & Van der Weyden Exploitatiemaatschappij Ewem/N.V.
    Inventor: Marius H. Lubbers