Patents by Inventor Gerrit Kerst

Gerrit Kerst 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).

  • Coupling
    Patent number: 4792154
    Abstract: The invention provides for a trailer coupling which includes one or more torque elements having pads of elastic material interposed between an inner angular member and an outer angular member. The pads of the elastic material permit but resist relative vertical movement between the inner and the outer members. The inner and outer members are connected by linkages to attachment plates. The coupling can be attached to and between a draughting vehicle and a trailer to transmit traction force to the trailer. The resilient deformation of the pads of elastic material dampen relative vertical movement between the draughting vehicle and the trailer.
    Type: Grant
    Filed: July 22, 1986
    Date of Patent: December 20, 1988
    Assignee: Brelko (Proprietary) Limited
    Inventors: Gerrit Kerst, Hendrik Kerst
  • Resilient coupling
    Patent number: 4641852
    Abstract: The invention provides for a trailer coupling which includes one or more torque elements having pads of elastic material interposed between an inner angular member and an outer angular member. The pads of elastic material permit but resist relative movement between the inner and the outer members. The inner and outer members are connected by linkages to attachment plates. The coupling can be attached to an between a draughting vehicle and a trailer to transmit traction force to the trailer. The resilient deformation of the pads of elastic material dampen relative movement between the draughting vehicle and the trailer.
    Type: Grant
    Filed: November 4, 1985
    Date of Patent: February 10, 1987
    Assignee: Brelko (Proprietary) Limited
    Inventors: Gerrit Kerst, Hendrik Kerst