Patents by Inventor Jan Paul Wijlhuizen

Jan Paul Wijlhuizen 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: 6027131
    Abstract: A working vehicle (1) contains a chassis (2) with a driver's cabin (3) which is equipped with a step construction (30) with at least one step (5). According to the invention the step (5) is coupled to a lifting and lowering device (11) which is controllable by switching devices (21) which are located at least in the vicinity of the step construction. Climbing in or out is thus considerably facilitated and does not involve any or hardly any burdening of the joints of the driver. It is expected that with this; complaints of an orthopedic nature with drivers can be decreased.
    Type: Grant
    Filed: December 5, 1996
    Date of Patent: February 22, 2000
    Assignee: T.C. Patent B.V.
    Inventor: Jan Paul Wijlhuizen
  • Patent number: 5816975
    Abstract: A device for the automatic control of a clutch, in particular of vehicles in which the degree of clutch engagement is determined by the position of an accelerator of the vehicle, such as an accelerator pedal or handle. The device includes an actuation member connected to the clutch and two movable elements whose positions are associated with the degree of clutch engagement of the vehicle and the position of the accelerator, respectively. The movable elements include a switch for making or breaking an electric contact in dependence on the positions of the elements relative to one another.
    Type: Grant
    Filed: September 13, 1996
    Date of Patent: October 6, 1998
    Assignee: T.C. Patent B.V.
    Inventors: Dirk-Jan Stoelinga, Jan Paul Wijlhuizen