Patents by Inventor Walter Dorfer

Walter Dorfer 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).

  • Machine for harvesting grape-berries from grape-bunches
    Patent number: 3996730
    Abstract: A frame, positioned adjacent a selected vine, carries clasping fingers, whereto the worker attaches vine-branches, removed from the vine and which bear grape-bunches. The clasping fingers and the vine-branches clasped thereby are shaken to remove relatively ripe grape-berries from the grape-bunches, while the resulting grape-stalks continue to be held by the clasping fingers so that they cannot be mixed with the shaken-off grape-berries. When the shaken-off grape-berries have been collected, the grape-stalks are manually or automatically unhooked from the clasping fingers.
    Type: Grant
    Filed: December 9, 1974
    Date of Patent: December 14, 1976
    Inventor: Walter Dorfer