Patents Assigned to Hystar Aerospace Development Corporation
  • Air vehicle
    Patent number: 4685640
    Abstract: An air vehicle for lifting loads generates lift forces from helium gas within a torus-shaped envelope having a central passageway, and from a fan arrangement designed to direct air downwardly through the passageway. Lateral propulsion units are provided on the envelope. In one embodiment, the fan arrangement comprises two fans carried by a saddle supported on the envelope, while in another embodiment a single fan is carried by a gondola suspended from the envelope.
    Type: Grant
    Filed: August 29, 1985
    Date of Patent: August 11, 1987
    Assignee: Hystar Aerospace Development Corporation
    Inventors: John E. Warrington, Dale C. Kramer
  • Air vehicle
    Patent number: D307131
    Type: Grant
    Filed: January 20, 1987
    Date of Patent: April 10, 1990
    Assignee: Hystar Aerospace Development Corporation
    Inventor: Dale C. Kramer
  • Air vehicle
    Patent number: D307884
    Type: Grant
    Filed: April 8, 1987
    Date of Patent: May 15, 1990
    Assignee: Hystar Aerospace Development Corporation
    Inventor: George Ninkovich
  • Air vehicle
    Patent number: D309887
    Type: Grant
    Filed: January 20, 1987
    Date of Patent: August 14, 1990
    Assignee: Hystar Aerospace Development Corporation
    Inventor: George Ninkovich