Patents by Inventor Richard M. Crowder

Richard M. Crowder 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).

  • Robotic gripping device having linkage actuated finger sections
    Patent number: 4834443
    Abstract: A gripping device which simulates the action of a human finger comprises three pivotted sections 3, 5, 7 having the middle section 5 linked to the tip section 7 by a bar 9 so that its rotation causes rotation of the tip section. Rotation of the lower section 3 is preferentially effected by a motor 11 via a sliding cross-head 15, an equalizer bar 18 and a rod 19. If this rotation is stopped by an object 25 to be gripped, the drive transfers via rod 20, crank 21 and rod 23 to the middle section 5, causing the middle and tip sections to rotate and grip the object against the lower portion as shown at 26. A robotic hand comprising four such fingers and a thumb is usable as a substitute for a human hand in a glove-box glove.
    Type: Grant
    Filed: November 18, 1987
    Date of Patent: May 30, 1989
    Assignee: The Secretary of State for Defence in Her Britannic Majesty's Government of the United Kingdom of Great Britain and Northern Ireland
    Inventors: Richard M. Crowder, David R. Whatley
  • Christmas tree watering device
    Patent number: D417596
    Type: Grant
    Filed: September 23, 1997
    Date of Patent: December 14, 1999
    Inventor: Richard M. Crowder