Patents Assigned to Motus Incorporated
  • Door hold open device
    Patent number: 5072973
    Abstract: A door hold open device for use with fire doors connected to a door closer unit. The hold open device has a latching means that automatically unlatches if the power supply drops below a predetermined threshold or a person attempts to disconnect the power supply. The device includes an electrical actuating means for unlatching the held open door. The actuating means allows a door to be latched open without constant current being supplied to the actuating means, so battery power is possible. The invention may be used with any door closer unit, does not require special wiring, and may include a self-contained power supply and an integral smoke detector.
    Type: Grant
    Filed: October 4, 1989
    Date of Patent: December 17, 1991
    Assignee: Motus Incorporated
    Inventors: Robert C. Gudgel, William Baker
  • Door holder power supply access member
    Patent number: 5044680
    Abstract: A door hold open device for use with fire doors connected to a door closer unit. The hold open device has a latching means that automatically unlatches if the power supply drops below a predetermined threshold or a person attempts to disconnect the power supply. The device includes an electrical actuating means for unlatching the held open door. The actuating means allows a door to be latched open without constant current being supplied to the actuating means, so battery power is possible. The invention may be used with any door closer unit, does not require special wiring, and may include a self-contained power supply and an integral smoke detector.
    Type: Grant
    Filed: September 5, 1990
    Date of Patent: September 3, 1991
    Assignee: Motus Incorporated
    Inventors: William Baker, Raymond G. Benson, Jr., Robert C. Gudgel