Patents by Inventor Robin Michael Blackburne

Robin Michael Blackburne 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).

  • Patent number: 4049269
    Abstract: This invention relates to a games racket, such as a tennis or squash racket, including a handle intended to be held in the hand, and carrying a head having an open marginal frame defining a central opening across which extends tensioned stringing carried by the head frame. Instead of being located in a single plane disposed centrally of and bounded by the head frame, the stringing of a racket embodying this invention is disposed in two generally parallel planes located on opposite sides of the frame, i.e. on opposite sides of the opposite side surfaces of the frame, and separated by a distance approximating the thickness of the frame.
    Type: Grant
    Filed: March 6, 1975
    Date of Patent: September 20, 1977
    Inventor: Robin Michael Blackburne
  • Patent number: 3995743
    Abstract: This invention relates to an accessory for a tooth brush, which is intended to be attached to the head of the tooth brush when not in use, so as to cooperate with the bristles to deflect them towards each other from a splayed-apart condition. In one embodiment, the accessory is formed from a plastics material, and includes a channel member defining a longitudinally extending channel dimensioned to receive at least the bristles of the tooth brush head. The inner side surfaces of the channel, which may be convergent, cooperate with at least the regions of the bristles adjacent the tips thereof to press them together.
    Type: Grant
    Filed: February 25, 1975
    Date of Patent: December 7, 1976
    Inventor: Robin Michael Blackburne