Patents by Inventor Wilbert A. Wagner

Wilbert A. Wagner 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: 5375866
    Abstract: An extension axle unit for an over-the-road tractor/trailer for carrying earth moving equipment, and other heavy loads includes a rigid connecting beam affixed to the end of the trailer bed. A wheeled support frame is connected to the connecting beam by a parallelogram structure including upper and lower arms, and connects the unit to follow directly behind the trailer. The parallelogram structure is pressurized through hydraulic cylinder units to maintain the extension frame in level relationship to the trailer frame as the tractor/trailer assembly moves over uneven terrain thereby maintaining proper load distribution on the several axles and avoiding and maintaining smooth ride with minimum stress within the trailer and extension assembly. A plurality of hydraulic cylinder units are mounted within the parallelogram structure and pressurized from a hydraulic source to maintain load distribution, with a selected maximum load on the wheels.
    Type: Grant
    Filed: March 1, 1993
    Date of Patent: December 27, 1994
    Inventor: Wilbert A. Wagner
  • Patent number: 4472100
    Abstract: A gooseneck apparatus for connecting a lowboy trailer to a truck-tractor includes a horizontal section having a king pin connection and a vertical section. A trailer coupling apparatus is secured to the vertical section and to the tractor. A hydraulically actuated lift mechanism positions the gooseneck apparatus with respect to a tractor bed. The gooseneck apparatus includes forward slotted plates adapted to mate with coupling pins on the trailer for vertical support of the trailer. A horizontal coupling includes a pneumatic operated vertical coupling pin on the gooseneck and releasably placed in a pin opening in a front plate on the trailer. The vertical sections include load walls which pivot between a vertical support position and a release position. The latter permits collapse of the gooseneck apparatus and the trailer bed to allow separation of the trailer and gooseneck apparatus.
    Type: Grant
    Filed: December 15, 1981
    Date of Patent: September 18, 1984
    Inventor: Wilbert A. Wagner
  • Patent number: 4390192
    Abstract: A gooseneck apparatus for connecting a lowboy trailer to a truck-tractor includes a horizontal section having a king pin connection and a vertical section. The horizontal section includes side rails. A hydraulically actuated lift mechanism is provided within the horizontal section for positioning the gooseneck apparatus with respect to the tractor bed. The vertical section includes a pair of open-top side box-like sections aligned beneath each side rail, and a pivot support connects the upper forward portion of each to the side rail. The pivot support axis is in the horizontal plane inclusive of the ling pin. Trailer lift cylinders are pivotally connected to the vertical section and side rails and are essentially vertically oriented in the transport position. The lift pivot connections are located with respect to the forward main pivot support to provide the necessary arcuate movement of the vertical sections. A forward slotted plate depends below a bottom support wall of each vertical section.
    Type: Grant
    Filed: December 16, 1980
    Date of Patent: June 28, 1983
    Inventor: Wilbert A. Wagner