Patents by Inventor Fred O. Douglas

Fred O. Douglas 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).

  • Safety guard for valve
    Patent number: 4380247
    Abstract: A two-part metal security guard fits inside of the existing curved shield at the top of a conventional LP gas tank and partly encloses the gas outlet valve of the tank so as to render the same inaccessible to children as well as other unauthorized persons. The safety guard affords adequate ventilation, being open at two ends, and does not obstruct the adjacent pressure relief device. The safety guard can be locked with a padlock.
    Type: Grant
    Filed: April 2, 1981
    Date of Patent: April 19, 1983
    Assignee: W. C. Bradley Co.
    Inventor: Fred O. Douglas
  • Folding utility cart
    Patent number: 4261596
    Abstract: A sturdy metal folding cart is useful as a garden wheelbarrow, a wheeled dustpan, and as a stable stand for debris bags of different sizes. The cart is constructed for compact packaging and ease of assembling by a purchaser, as well as ease of folding and erecting for use. The car possesses a foldable stabilizing leg with positive locking brackets which also support the leg and form attachment points for handle components. Convenient latches for folding side and front panels are included in permanently assembled relationship with the cart.
    Type: Grant
    Filed: May 2, 1979
    Date of Patent: April 14, 1981
    Assignee: W. C. Bradley Co.
    Inventor: Fred O. Douglas
  • Height adjustment means for selective spacing between circular cooking grill and hanging fire grate
    Patent number: D259536
    Type: Grant
    Filed: November 24, 1978
    Date of Patent: June 16, 1981
    Assignee: W. C. Bradley Co.
    Inventor: Fred O. Douglas