Patents by Inventor Joachim Kreher

Joachim Kreher 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: 6315139
    Abstract: A device for elastically supporting the coupling shaft (4) of a central buffer coupling at a rail-borne vehicle with a spring apparatus is provided, which is formed by rings (9) arranged one behind another at mutually spaced locations in the longitudinal direction of the coupling shaft and vertically. The pretensioned rings (9) are held in annular rings (5, 6) of the coupling shaft (4) and of the housing (3). To improve the generation and the adjustability of the pretension of the spring apparatus of the device, the coupling shaft (4) has a collar (11), with which a pretensioning ring (12) is in contact with its rear side, on the one hand, and, and with which the ring (9) located closest to the opening of the housing (3) is in contact, on the other hand, with its front side, wherein the pretensioning ring (12) pretensions the rings (9) in the longitudinal direction of the coupling shaft (4) in the unloaded state of the device.
    Type: Grant
    Filed: March 29, 1999
    Date of Patent: November 13, 2001
    Assignee: Scharfenbergkupplung GmbH & Co. KG
    Inventor: Joachim Kreher
  • Patent number: 6008472
    Abstract: An electric heater for central buffer couplings, with a heating element introduced into a groove of the coupling head. The heating element is covered to the outside. To reduce damage to the heating elements and to prolong the service life of the heater, the heating element in the groove is filled with silicone material, which forms the outer cover and is a flowable single-component material, which undergoes crosslinking at room temperature under the action of atmospheric humidity.
    Type: Grant
    Filed: June 25, 1997
    Date of Patent: December 28, 1999
    Assignee: Scharfenbergkupplung GmbH & Co. KG.
    Inventors: Joachim Kreher, Walter Kohler
  • Patent number: 5509548
    Abstract: A coupling head housing of a central buffer coupling for rail vehicles, especially low-platform vehicles, with a lock with rotatable disk-type hook and articulated coupling ring, which is located retracted inside the centering projection when the coupling is not in use, and with a funnel for receiving the centering projection of an opposite coupling head of the same design. Offsets in height and lateral offsets, but even angular offsets are to be compensated prior to the coupling process. Accordingly, the front part, which combines a compact design with the known advantages of older coupling designs for the largest possible gripping range, within which a coupling process can still be initiated as intended when the coupling head housings are axially offset in relation to one another and it can be concluded after the adjustment to one another.
    Type: Grant
    Filed: December 30, 1994
    Date of Patent: April 23, 1996
    Assignee: Scharfenbergkupplung GmbH
    Inventor: Joachim Kreher
  • Patent number: 4775059
    Abstract: To avoid, after excessive shocks in the underframe in the forestructure and at the coupling of a traction/thrust pivoted joint or device of a vehicle, deformations of a central buffer coupling at the underframe of the vehicle is proposed. Arranged between the carrier plate for the support of the traction/thrust device and the coupling uptake at the underframe in each instance is a shock absorber which in case of excessive shocks becomes deformed elastically and/or plastically and permits a deformation path preset for the force acting at the time.
    Type: Grant
    Filed: April 9, 1986
    Date of Patent: October 4, 1988
    Assignee: Scharfenbergkupplung GmbH
    Inventors: Hilmar Forster, Joachim Kreher
  • Patent number: 4366911
    Abstract: A device for uncoupling central buffer couplings on rail vehicles having a rotatable disk hook includes a cam operatively connected to a worm wheel for rotation therewith which, in turn, is connected to an electric motor. The cam is rotatably operative to engage a bridge member connected to the disk hook in order to rotate the disk hook and also to engage a switch for energizing and de-energizing the motor.
    Type: Grant
    Filed: June 9, 1980
    Date of Patent: January 4, 1983
    Assignee: Scharfenbergkupplung GmbH
    Inventors: Wilhelm Gunther, Joachim Kreher