Patents by Inventor Horst Kohlmorgen

Horst Kohlmorgen 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: 6685277
    Abstract: A method and apparatus for braking a revolvable superstructure of a working machine by counter-steering. A working machine has a superstructure which is driven by a motor via a transmission. A control lever operates a control valve which sends signals to a pivoting pump. The control lever has at least one neutral position and at least two switching positions. When the control lever is moved to a braking position, a switching logic circuit coupled to the pivoting pump is actuated and reverses the pivoting pump. This reverses the direction of revolution of the superstructure and brakes the revolution of the superstructure by counter-steering. A monitoring device coupled to the switching logic circuit monitors the number of revolutions of the superstructure. The braking is stopped when the monitoring device detects that the superstructure has come to a standstill.
    Type: Grant
    Filed: March 29, 2002
    Date of Patent: February 3, 2004
    Assignee: O&K Orenstein & Koppel Aktiengesellschaft
    Inventors: Horst Kohlmorgen, Hans-Joachim Waegner, Ulrich Kr├╝ger
  • Patent number: 6401856
    Abstract: A method for the power-shiftable change-over of a hydrostatic vehicle drive of a mobile construction machine, comprising at least one hydrostatic capacity pump, a hydrostatic drive motor and a two-stage power-shift transmission, which drives the axle(s) of the construction machine via its drive shaft, wherein the power-shift transmission is shifted with a change-over valve, which method is to be modified such that an operationally safe automatic change-over in dependence on the load is possible between the shifting stages of the power-shift transmission.
    Type: Grant
    Filed: November 29, 1999
    Date of Patent: June 11, 2002
    Assignee: O & K Orenstein & Koppel AG
    Inventor: Horst Kohlmorgen