Patents by Inventor Donald G. Haffner

Donald G. Haffner 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: 4149362
    Abstract: A combined lawn mower and grass catcher including a rotary type mower having a rearwardly directed discharge opening and a grass catcher mounted on the mower and extending to the rear thereof and within the lateral confines of the mower. A mower handle extends rearwardly of the mower with a portion thereof underneath the catcher for protecting and supporting the catcher if and when the latter extends down to the supporting portion of the mower handle. The catcher and the mower have inter-engaging members for attaching and removing the catcher relative to the mower, including a handle at the rear end of the catcher for attaching to the mower handle and for lifting the catcher. A spring-biased discharge opening door is mounted on the mower for engaging the front portion of the catcher and thereby securing the catcher so the mower under the influence of the spring acting on the mower door.
    Type: Grant
    Filed: July 25, 1977
    Date of Patent: April 17, 1979
    Assignee: Jacobsen Manufacturing Company
    Inventors: Donald G. Haffner, Merlin H. Gandrud, Neill C. Woelfer
  • Patent number: 4149363
    Abstract: A lawn mower catcher of the bag type including a grass inlet opening at one end thereof and having a rigid door or mower adapter connected at the one end and extending over the opening. The door or adapter itself has a grass inlet opening for entry of the grass into the bag catcher. The door or adapter is pivotally attached to the fabric or bag portion of the catcher and can be opened and closed on the catcher opening and has attaching members for mounting onto a mower. Also, the catcher has another mower attachment, all so that the opposite ends of the catcher can be attached to the mower and extends rearwardly thereof and within the lateral limits of the mower and the mower handle extends underneath the catcher for upwardly supporting the catcher when the catcher is filled or sags. The catcher also has an additional handle for uprightly supporting the catcher to empty the grass therefrom when the door is opened.
    Type: Grant
    Filed: July 25, 1977
    Date of Patent: April 17, 1979
    Assignee: Jacobsen Manufacturing Company
    Inventors: Neill C. Woelffer, Merlin H. Gandrud, Donald G. Haffner