Patents by Inventor Imre Lendvai

Imre Lendvai 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).

  • Integral servo steering gear with rack transmission
    Patent number: 4230020
    Abstract: Hydraulic servo steering gear having a cylindrical, double-acting working piston connected to a steering shaft by a rack-and-sector gear connection, especially for motor vehicles comprises a piston-and-sleeve type control mechanism arranged in the working piston. The cylindrical outer surface of the sleeve of the control mechanism is fitted loosely, with a radial gap, in the seat formed therefor in the double-acting working piston. The control sleeve is secured against axial and angular displacement.
    Type: Grant
    Filed: March 21, 1978
    Date of Patent: October 28, 1980
    Inventors: Jozsef Ivony, Imre Lendvai, Laszlo Szucs, Jozsef Orban
  • Hydraulic port control apparatus, e.g. for motor vehicle servo steering gear
    Patent number: 4143676
    Abstract: The invention concerns hydraulic control valves suitable for e.g. motor vehicle steering gear. A variety of control port configurations are formed between cooperating ribs and bores on the control piston -- which may be rotary or axially displaceable -- and on the control sleeve. In each case the resulting control ports are defined by circular arcs having a common chord arranged at right angles to the direction of the control displacement for example at right angles to the direction of the control displacement for example at right angles to the direction of rotation of a steering spindle.
    Type: Grant
    Filed: December 29, 1977
    Date of Patent: March 13, 1979
    Inventors: Jozsef Ivony, Imre Lendvai, Laszlo Szucs, Laszlo Szekely