Patents by Inventor Henricus J. J. M. Van Hooff

Henricus J. J. M. Van Hooff 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).

  • Hydraulic circuit with accumulator
    Patent number: 4693080
    Abstract: A hydraulic circuit for actuating a first hydraulic motor with an under psure, i.e. pressurized fluid has an externally driven first hydraulic pump for introduction of fluid into the circuit from an open reservoir and a hydraulic accumulator to keep stand-by pressure fluid, the pressure in the accumulator being sufficient to actuate the first hydraulic motor. A fluid pressure intensifier, i.e. a second hydraulic motor and a second hydraulic pump coupled therewith, is also in the circuit. The second hydraulic pump has a smaller swept volume than the second hydraulic motor, and both are connected to an outlet of the first hydraulic pump for the second hydraulic pump to pump into an inlet of the hydraulic accumulator.
    Type: Grant
    Filed: September 18, 1985
    Date of Patent: September 15, 1987
    Assignee: Van Rietschoten & Houwens Technische Handelmaatschappij B.V.
    Inventor: Henricus J. J. M. Van Hooff