Patents by Inventor Ernest H. Parrish

Ernest H. Parrish 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).

  • Metal can crusher
    Patent number: 4228734
    Abstract: A device for axially crushing a can is disclosed. The device is hand operated and characterized by a mechanical linkage which increases the mechanical advantage or leverage applied to the can undergoing crushing, giving an ultimate result of compression of recyclable cans, particularly aluminum cans, to a small fraction of their original size. Also disclosed is a method of operation of the device.
    Type: Grant
    Filed: April 5, 1979
    Date of Patent: October 21, 1980
    Inventor: Ernest H. Parrish