Mechanical mono-fold door

A door opening mechanism for opening and closing a top hinged mono-fold door having a back surface, the mono-fold door being mounted within a building opening by a door frame including two spaced vertical members having a top and bottom end, and a header supported in a generally horizontal orientation mounted between or above the vertical members, the mono-fold door being rotatably mounted to the header, the door opening mechanism comprising:

• a. a winding mechanism to be the building or door frame, the winding mechanism including means for engaging at least one cable or strap, a winding drum on which the cable or strap can be wound and means for operatively engaging an actuator;
• b. a strut having a leading end for slidably engaging the back surface of the mono-fold door and an opposite suspended trailing end;
• c. a first cable or strap having a first end the winding drum and a second end secured at or near the leading end of the strut, and a second cable or strap having a first end the winding drum and a second end secured at or near the trailing end of the strut;
• d. an actuator operatively engaging the winding drum, the actuator including means for rotating the winding drums mechanism, such that when the winding drums is rotated in a first direction, the first and second cable or strap wind up on the winding drum, causing the leading end of the strut to slidably engage the back side of the mono-fold door to rotate the mono-fold door upward to an open position, and when the winding drums is rotated in an opposite second direction, the cable or strap unwind from the winding drums, causing the leading end of the strut to drop, allowing the mono-fold door to rotate downward to a closed position.

A door opening mechanism for opening and closing a top hinged mono-fold door having a back surface, the mono-fold door being mounted within a building opening by a door frame defined by first and second spaced vertical members and a header mounted in a generally horizontal orientation between or above the vertical members, the mono-fold door being rotatably mounted to the header, the door opening mechanism comprising:

• a. a first winding mechanism secured to the building or the door frame on the side of the first vertical member, the first winding mechanism including means for engaging at least one cable or strap, a winding drum on which one or more the cable or strap can be wound, and means for operatively engaging a first actuator;
• b. a first strut having a leading end for slidably engaging the back surface of the mono-fold door and an opposite trailing end;
• c. a first cable or strap having means for engaging the first winding drum, a first end for engaging the leading end of the first strut at or near the leading end of the first strut, and a second end for engaging the trailing end of the second strut, at or near the trailing end of the second strut;
• d. a first actuator operatively engaging the first winding drum, the first actuator including means for rotating the winding drums;
• e. a second winding mechanism secured to the building or the door frame on the side of the second vertical member, the second winding mechanism including means for engaging at least one cable or strap, a winding drum on which a second cable or strap can be wound and means for operatively engaging a second actuator;
• f. a second strut having a leading end for slidably engaging the back surface of the mono-fold door and an opposite trailing end;
• g. a second cable or strap having means for engaging the second winding drum, having a first end for engaging the leading end of the second strut at or near the leading end of the second strut, and a second end of the second strut for engaging the trailing end of the second strut, at or near the trailing end of the second strut;
• h. a second actuator operatively engaging the second winding drum, the second actuator including means for rotating the second winding drum;
• and
• i. wherein, when the first and second winding drums are rotated in a first direction, the first and second cable or strap wind up on their corresponding first and second winding drums, causing the leading edges of the first and second struts to slidably engage the back side of the door to rotate the mono-fold door to an open position, and when the winding drums of the first and second winding mechanisms are rotated in an opposite second direction, the first and second cable or strap unwind from their respective winding drums, causing the leading ends of the first and second struts to drop, allowing the mono-fold door to rotate to a closed position.

A door opening mechanism for opening and closing a top hinged mono-fold door having a back surface, the mono-fold door being mounted within a building opening by a door frame defined by first and second spaced vertical members and a generally horizontally oriented header positioned above the vertical members, the mono-fold door being rotatably mounted to the header, the door opening mechanism comprising:

• a. a first winding mechanism the building or the door frame on the side of the first vertical member, the first winding mechanism including means for engaging at least one cable or strap, a winding drum on which a cable or strap can be wound and means for operatively engaging a first actuator;
• b. a first strut having a leading end for slidably engaging the back surface of the mono-fold door and an opposite suspended trailing end;
• c. a first cable or strap having a first end the first winding drum and a second end secured near or to the leading end of the first strut, and a second cable or strap having a first end the winding drum and a second end secured at or near the trailing end of the first strut;
• d. a first actuator operatively engaging the first winding drum, the first actuator including means for rotating the winding drum;
• e. a second winding mechanism the building or the door frame on the side of the second vertical member, the second winding mechanism including means for engaging at least one cable or strap, a winding drum on which a second cable or strap can be wound and means for operatively engaging a second actuator;
• f. a second strut having a leading end for slidably engaging the back surface of the mono-fold door and an opposite suspended trailing end;
• g. a third cable or strap having a first end the winding drum of the second winding mechanism and a second end secured at or near a leading end of the second strut, and a fourth cable or strap having a first end the second drum and a second end secured at or near a trailing end of the second strut;
• h. a second actuator operatively engaging the second winding drum, the second actuator including means for rotating the second winding drum;
• and
• i. wherein, when the first and second winding drums are rotated in a first direction, the first and second cable or strap wind up on their respective winding drums, causing the leading edges of the first and second struts to slidably engage the back side of the door to rotate the mono-fold door to an open position, and when the winding drums of the first and second winding mechanisms are rotated in an opposite second direction, the first and second cable or strap unwind from their respective winding drums, causing the leading ends of the first and second struts to drop, allowing the mono-fold door to rotate to a closed position.