Patents by Inventor Martin Graf

Martin Graf 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: 4155379
    Abstract: The heddles of a weaving machine have vibration absorbing material on the end loops thereof which normally contact edges of metal rods mounted on a heddle frame for oscillating movement, the heddles effecting a lifting movement relative to the rods upon oscillation thereof. Metal-to-metal contact between the end loops and the rods is therefore avoided so as to reduce noise during operation of the machine and so as to avoid corrosion of the heddles and the rods.
    Type: Grant
    Filed: February 28, 1978
    Date of Patent: May 22, 1979
    Assignee: Grob & Co. Aktiengesellschaft
    Inventor: Martin Graf
  • Patent number: 4015638
    Abstract: The lateral support of the heddle frame is provided with a projection which is received in a complementary recess in the end of the frame stave. The upper surface of the projection is provided with a bevelled surface. A screw extends diagonally into the recess from the outer edge of the frame stave adjacent the lateral support with the central axis of the screw disposed perpendicular to the bevelled surface to prevent the withdrawal of the projection from the recess when the end of the screw is disposed in engagement with the bevelled surface.
    Type: Grant
    Filed: March 16, 1976
    Date of Patent: April 5, 1977
    Assignee: Grob & Co. Aktiengesellschaft
    Inventor: Martin Graf
  • Patent number: 3990481
    Abstract: A wear resistant leno heddle is disclosed which has a doup and two lifting heddles. The lifting heddles are formed in one piece by moulding a plastic material. The moulding technique allows the lifting heddles to be formed with varying cross-sectional dimensions according to the required strength of a given area. Reinforcing members may also be embedded within the lifting heddles to further increase its structural strength.
    Type: Grant
    Filed: June 10, 1975
    Date of Patent: November 9, 1976
    Assignee: Grob & Co. Aktiengesellschaft
    Inventor: Martin Graf
  • Patent number: 3949789
    Abstract: A frame stave for the head frame of a weaving machine is extruded with a closed, internal T shaped channel 10 in its upper edge. When the location of connecting hooks 5 is determined, a portion of the top edge of the stave is machined away at 6 to enable the hooks to be attached to the stave by screws 8 and sliding inserts 9 within the channel.
    Type: Grant
    Filed: March 6, 1975
    Date of Patent: April 13, 1976
    Assignee: Grob & Co. Aktiengesellschaft
    Inventor: Martin Graf