Patents by Inventor Donald Kahl

Donald Kahl 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: 7641214
    Abstract: An energy-absorbing trailer hitch assembly is provided that includes a receiver tube and an insertion tube. The receiver tube is typically fixedly attached to a motor vehicle and has a set of apertures that affords for a pin to pass therethrough. The tube also has a set of slots adjacent to the apertures, with protrusions between each aperture and its adjacent slot. The insertion tube serves as a trailer hitch and has a set of apertures that align with the set of apertures in the receiver tube. Placement of the insertion tube within the receiver tube affords for a pin to pass through and be held within said apertures. In this manner a trailer may be attached to the trailer hitch and pulled by the motor vehicle. When the trailer is impacted, for example by a rear-end collision, deformation of the pin and/or the protrusions of the receiver tube allow the pin to travel in a forward direction, thereby absorbing energy from the collision.
    Type: Grant
    Filed: May 11, 2006
    Date of Patent: January 5, 2010
    Assignee: Toyota Motor Engineering & Manufacturing North America, Inc.
    Inventor: Donald Kahl
  • Publication number: 20070262564
    Abstract: An energy-absorbing trailer hitch assembly is provided that includes a receiver tube and an insertion tube. The receiver tube is typically fixedly attached to a motor vehicle and has a set of apertures that affords for a pin to pass therethrough. The tube also has a set of slots adjacent to the apertures, with protrusions between each aperture and its adjacent slot. The insertion tube serves as a trailer hitch and has a set of apertures that align with the set of apertures in the receiver tube. Placement of the insertion tube within the receiver tube affords for a pin to pass through and be held within said apertures. In this manner a trailer may be attached to the trailer hitch and pulled by the motor vehicle. When the trailer is impacted, for example by a rear-end collision, deformation of the pin and/or the protrusions of the receiver tube allow the pin to travel in a forward direction, thereby absorbing energy from the collision.
    Type: Application
    Filed: May 11, 2006
    Publication date: November 15, 2007
    Inventor: Donald Kahl