Patents by Inventor Hubertus Zedler

Hubertus Zedler 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: 5243943
    Abstract: A distributor-type fuel injection pump is provided with a hydraulic injection adjusting mechanism whose injection adjusting piston adjusts the cam gear unit for driving the pump plunger to execute strokes corresponding to the desired position of the start of injection. The injection adjusting piston defines a control space on one side and a spring space receiving a return spring on the other side. The control space is connected via a throttle bore with the pump interior space which is filled with fuel by a delivery pump. The fuel pressure is adjusted by a pressure control valve. To prevent unstable pressure vibrations on the injection adjusting piston, which leads to defects in the operation of the fuel injection pump, the spring space is connected on one side with the suction side of the delivery pump via a first throttle and on the other side with the pressure side of the delivery pump via a second throttle having a smaller throttle cross section.
    Type: Grant
    Filed: August 18, 1992
    Date of Patent: September 14, 1993
    Assignee: Robert Bosch GmbH
    Inventors: Gunter Bofinger, Heinz Nothdurft, Karl-Friedrich Russeler, Josef Hain, Hubertus Zedler, Manfred Narr-Hess, Remy Schmitt