Patents by Inventor Earl Albert Knipe

Earl Albert Knipe 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).

  • Rotary mower blade with detachable tines
    Patent number: 3964243
    Abstract: The outer section of a rotary mower blade is stamped with a U-shaped cut-out portion to define a tab extending in the direction of the center of the blade. Each tine device is formed of springwire and includes a downward end section which forms the tine and a coiled section which is mounted on the tab. The other end section overlies the mower blade to prevent rotation of the entire device on the tab by the operation of the tine which is to loosen the thatch formed by accumulated grass clippings.
    Type: Grant
    Filed: March 10, 1975
    Date of Patent: June 22, 1976
    Assignee: Rexnord Inc.
    Inventor: Earl Albert Knipe