Patents by Inventor William Frederick Bischoff

William Frederick Bischoff 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: 4103902
    Abstract: A water sealing device for establishing a gas-tight seal between a stationary member and a vibratory member in which a water tank is supported upon and moves with the vibratory member, and at least one sealing element is supported upon the stationary member and extends below the water level in the tank. Means are provided for regulating the level of water in the tank. A material flow passage extends through the water tank to interconnect the stationary and vibratory members.
    Type: Grant
    Filed: August 16, 1977
    Date of Patent: August 1, 1978
    Assignee: Foster Wheeler Energy Corporation
    Inventors: Peter Steiner, William Frederick Bischoff