Special Refrigerant Compound Patents (Class 505/896)
  • Patent number: 5182914
    Abstract: The rotary dipole active magnetic regenerative refrigerator (10) of the present invention comprises a stationary first regenerative magnetic bed (12) positioned within a stationary first inner dipole magnet (14), a stationary second regenerative magnetic material bed (16) positioned within a stationary second inner dipole magnet (18), an outer dipole magnet (20) that rotates on a longitudinal axis and encloses the inner dipole magnets (14, 18), a cold heat exchanger (22), hot heat exchangers (24, 26), a fluid displacer (28), and connective plumbing through which a heat transfer fluid is conveyed.
    Type: Grant
    Filed: March 14, 1990
    Date of Patent: February 2, 1993
    Assignee: Astronautics Corporation of America
    Inventors: John A. Barclay, Joseph A. Waynert, Anthony J. DeGregoria, Joseph W. Johnson, Peter J. Claybaker
  • Patent number: 4939976
    Abstract: A reusable and regenerative electromagnetic propulsion method and operating system is provided for propelling high mass payloads to orbital velocities which does not require a vacuum environment. The propulsion system comprises a self supporting superconducting dipole coil several kilometers in diameter that is accelerated by magnetic repulsive forces generated by a plurality of giant superconducting field coils mounted in underground tunnels. The propulsion dipole is mounted inside a circular hypersonic wing-like structure equipped with movable aerodynamic control surfaces for guidance. The propulsion system can accelerate a payload with any desired launch azimuth by accelerating along a line of magnetic induction generated by the field coils having the desired azimuth angle. The payload is attached to the propulsion system by a plurality of cables.
    Type: Grant
    Filed: April 1, 1988
    Date of Patent: July 10, 1990
    Inventor: Michael A. Minovitch