Patents by Inventor John W. Greer

John W. Greer 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).

  • Electronically powered apparatus for imparting vibratory forces on a tree
    Patent number: 4591748
    Abstract: A tree vibrator (8) includes an electric motor (14) disposed within a housing (15) mounted on tree (10) by band clamp (18). An adjustable eccentric weight assembly (24) is mounted on the rotary output shaft (26) of motor (14) to impart vibrations of a desired intensity on tree (10). Motor (14) is powered by battery assembly (49) through an intermediate electronic power control circuit assembly (56) to intermittently energize motor (14), significantly extending the useful life of batteries (50) of assembly (49).
    Type: Grant
    Filed: April 11, 1983
    Date of Patent: May 27, 1986
    Inventor: John W. Greer