Patents by Inventor David R. Keller

David R. Keller 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: 5816575
    Abstract: A new type of Blackjack (21) game, table and method is disclosed wherein a number of betting options are provided for the Blackjack player. In addition to the standard betting option against the Dealer, a Dealer Bust option, a jackpot option where the Blackjack player can obtain over 1,000 to 1 return payout and several other betting options are provided to bet on various possible cards such as receiving a 3 or a 6, a 4 or 5, a 10, Jack Queen, King or Ace for one or both of the initial two cards.
    Type: Grant
    Filed: June 9, 1997
    Date of Patent: October 6, 1998
    Assignee: Harry M. Weiss
    Inventor: David R. Keller
  • Patent number: 5422684
    Abstract: A form of protective eyewear having retractable eyeshields which protect the wearer's eyes from injury from mechanical, chemical or radiation hazards. The eyeshields have an extended position and a retracted position. In one embodiment, a mechanical actuator moves the eyeshields between the extended position and the retracted position. In another embodiment, the shields contain an inflation chamber which moves the eyeshields between the extended position and the retracted position. The eyewear may be in the form of corrective eyeglasses, sunglasses, safety glasses or safety goggles.
    Type: Grant
    Filed: April 23, 1992
    Date of Patent: June 6, 1995
    Inventor: David R. Keller