Patents by Inventor Henry W. Shaeffer

Henry W. Shaeffer 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: 5293707
    Abstract: A self-inflatable balloon and motor-driven turbine assembly has a communication discernible on a surface of the balloon and has a pneumatically sealed enclosure for the turbine. The sealed enclosure has an outlet port and which, together with the inlet port, are positioned in relation to the turbine to permit efficient flow of air or other gas into the balloon when it is desired to inflate the balloon. The outlet port or the inlet port, depending upon the embodiment, seals an enclosure when selectively operated to a closed position to prevent leaking of the gas from the inflated balloon.
    Type: Grant
    Filed: August 8, 1991
    Date of Patent: March 15, 1994
    Inventor: Henry W. Shaeffer
  • Patent number: 4920674
    Abstract: A self-inflatable balloon has a communication discernible on its surface and has its mouth opening pneumatically sealed to a funnel through which air is selectively directed upon actuation of a triggering event. Audible communication may also be actuated by the same or a different triggering event. A method of communicating comprises a message which becomes cognizable upon inflation of a message carrying device.
    Type: Grant
    Filed: November 14, 1988
    Date of Patent: May 1, 1990
    Inventor: Henry W. Shaeffer