Patents Assigned to Staefa Control Systems, Inc.
  • Forced air ventilation system
    Patent number: 4942921
    Abstract: The variable air volume ventilating system includes a control device for driving a fan at continuously variable speeds for delivering air to the space for conditioning purposes. A controller monitors various conditioners of the space, to, in turn, cause the control device to drive the fan at different continuously varying speeds. A light conduit, such as a fiber optic link, interconnects the control device and the controller for supplying a control signal to the control device.
    Type: Grant
    Filed: January 29, 1988
    Date of Patent: July 24, 1990
    Assignee: Staefa Control Systems, Inc.
    Inventors: David L. Haessig, Jamshid Hamidi, Roger V. Hort