Patents by Inventor John A. Abbott

John A. Abbott 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: 4598550
    Abstract: An engine powered by radiant thermal energy wherein elongated thermally expandable members are tensioned radially out from a centrally located floating bearing to which the converging ends of the tension members are secured. The floating bearing encloses an eccentric section of a crankshaft with axis parallel to rays from the energy source and perpendicular to the plane of the tension members. The crankshaft has mounted thereto means for shading at any one time some but not all of said tension members from the energy source. The arrangement is such that when the engine is first exposed to the energy source with crankshaft axis pointing at the source expansion of the unshaded tension members results in an imbalance of the forces on the floating bearing and hence the crankshaft, causing the crankshaft and shade mounted thereto to begin to rotate.
    Type: Grant
    Filed: December 10, 1984
    Date of Patent: July 8, 1986
    Inventor: John A. Abbott
  • Patent number: 4317731
    Abstract: An absorber for increasing the concentration of oxygen in a solution has a pressure chamber therein which receives oxygen under pressure as well as a liquid to be oxygenated within an upper portion thereof. A shaft on which a turbine blade agitator is mounted is located in the upper portion of the chamber. The shaft is driven rotationally by a motor through a rotary seal in the pressure chamber cover. A baffle plate is mounted within the pressure chamber to define a lower portion therebeneath, which is in communication with the upper portion, but isolated from the agitation in the upper portion. The oxygen-liquid solution which drains into the lower portion is subsaturated and relatively quiescent, so that large oxygen bubbles therein disengage and rise into the upper portion, and entrained small bubbles therein dissolve in the subsaturated oxygen-liquid solution.
    Type: Grant
    Filed: March 27, 1978
    Date of Patent: March 2, 1982
    Assignee: FMC Corporation
    Inventors: Thomas E. Roberts, Jr., John A. Abbott, Bruce M. Wright
  • Patent number: 4171263
    Abstract: An activated sludge sewage treatment process which includes a mixed liquor tank and a pressure vessel much smaller in size than said mixed liquor tank. At least a portion of the influent to said tank is directed to the pressure vessel where oxygen is dissolved therein under superatmospheric pressures. The pressure is then released and said portion of the influent gently transferred into said mixed liquor tank so that substantially all of the dissolved oxygen remains in solution until said influent portion is mixed with the sewage in the mixed liquor tank to thereby raise the dissolved oxygen concentration in the tank.
    Type: Grant
    Filed: August 8, 1977
    Date of Patent: October 16, 1979
    Assignee: FMC Corporation
    Inventors: Thomas E. Roberts, Jr., Bruce M. Wright, Clyde D. Watson, John A. Abbott