Patents by Inventor Robin D. R. Andrews

Robin D. R. Andrews 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).

  • Relating to vibratory machines
    Patent number: 4828394
    Abstract: This invention relates to vibratory machines such as grinding machines. A machine 10 has a vibratory unit 13 which is connected to a separate motor 12 by a flexible drive 14. The drive rotates a shaft 23 carrying eccentric weights 25,26 and the resultant gyratory movement is transmitted directly to a vibratory plate 16 through bearings 24. The amplitude vibration can be altered by adjusting the relative position of the weights.
    Type: Grant
    Filed: July 17, 1987
    Date of Patent: May 9, 1989
    Inventor: Robin D. R. Andrews