Closure control mechanism

In a closure control mechanism attached adjacent to a free end edge of a door swingable into and out of an opening within a wall, a dead bolt lock assembly including a frame immovably mounted on the door and a pair of dead bolts, each having an end, the dead bolts movable within the frame for extension and retraction of the ends of the dead bolts into and out of engagement with a pair of keeper surfaces located on the wall and extending in the direction of extension and retraction;

• a first surface on one end of each dead bolt transverse to the direction of movement, angularly oriented for substantially the full thickness of the bolt, facing in the direction of extension, facing in the direction the door swings when the door is swung out of the opening in the wall, facing the keeper surface when the door is in the opening and when the dead bolt lock assembly is in an extended position and facing the door when the dead bolt lock assembly is in a retracted position;
• a rotatable member in said one end of each dead bolt engageable with the keeper surface to facilitate both extension and retraction of the bolt relative to the keeper;
• a second surface at said one end of each dead bolt extending in the direction of bolt movement, facing the keeper surface when the dead bolt lock assembly is in an extended position and facing the door when the dead bolt lock assembly is in a retraction position, said rotatable member extending beyond said second surface in rolling engagement with the door or the keeper surface during extension or retraction of the dead bolts;
• a manual bolt-operating member rotatably supported in the frame;
• an overcenter spring biasing the manual bolt-operating member in either of two directions about its axis of rotation;
• a pair of rod members operatively connected to the dead bolts and to the bolt-operating member eccentrically of the axis of rotation thereto extend and retract the dead bolts concurrently;
• and means for oscillating the manual bolt-operating member about its axis of rotation to move the ends of the dead bolts into and out of engagement with the keeper surfaces.

In a closure control mechanism attached adjacent to a free edge of a door swingable into and out of an opening within a wall, a dead bolt lock assembly including a frame immovably mounted on the door and a pair of dead bolts, each having an end, the dead bolts movable within the frame for extension and retraction of the ends of the dead bolts into and out of engagement with a pair of keeper surfaces located on the wall and extending in the direction of extension and retraction;

• a first surface on one end of each dead bolt transverse to the direction of movement, angularly oriented for substantially the full thickness of the bolt, facing in the direction of extension, facing in the direction the door swings when the door is swung out of the opening in the wall, facing the keeper surface when the door is in the opening and when the dead bolt lock assembly is in an extended position and facing the door when the dead bolt lock assembly is in a retracted position;
• a rotatable member in said one end of each dead bolt engageable with the keeper surface to facilitate both extension and retraction of the bolt relative to the keeper;
• a second surface at said one end of each dead bolt extending in the direction of bolt movement, facing the keeper surface when the dead bolt lock assembly is in an extended position and facing the door when the dead bolt lock assembly is in a retracted position, said rotatable member extending beyond said second surface in rolling engagement with the door or the keeper surface during extension or retraction of the dead bolts;
• a manual bolt-operating member rotatably supported in the frame;
• a pair of rod members operatively connected to the dead bolts and to the bolt-operating member eccentrically of the axis of rotation thereof to extend and retract the dead bolts concurrently;
• manual oscillating means for oscillating said manual bolt-operating member about its axis of rotation to extend and retract the dead bolts into and out of engagement with the keeper surfaces;
• and extension on the manual bolt-operating member located so that when the dead bolt lock assembly is in an extended position, the extension is normal to the direction of bolt movement and pointing in the direction of the free edge of the door;
• and a roller on the extension for engagement with a keeper on the wall, said roller having an axis of rotation that intersects the axis of rotation of the manual bolt-operating member.

In a closure control mechanism attached adjacent to a free edge of a door swingable into and out of an opening within a wall, a dead bolt lock assembly including a frame immovably mounted on the door and a pair of dead bolts, each having an end, the dead bolts movable within the frame for extension and retraction of the ends of the dead bolts into and out of engagement with a pair of keeper surfaces located on the wall and extending in the direction of extension and retraction;

• a first surface on oen end of each dead bolt transverse to the direction of movement, angularly oriented for substantially the full thickness of the bolt, facing in the direction of extension, facing in the direction the door swings when the door is swung out of the opening in the wall, facing the keeper surface when the door is in the opening and when the dead bolt lock assembly is in an extended position and facing the door when the dead bolt lock assembly is in a retracted position;
• a rotatable member in said one end of each dead bolt engageable with the keeper surface to facilitate both extension and retraction of the bolt relative to the keeper;
• a second surface at said one end of each dead bolt extending in the direction of bolt movement, facing the keeper surface when the dead bolt lock assembly is in an extended position and facing the door when the dead bolt lock assembly is in a retraction position, said rotatable member extending beyond said second surface in rolling engagement with the door or the keeper surface during extension or retraction of the dead bolts;
• a manual bolt-operating member rotatably supported in the frame;
• an overcenter spring biasing the manual bolt-operating member in either of two directions about its axis of rotation;
• a pair of rod members operatively connected to the dead bolts and to the bolt-operating member eccentrically of the axis of rotation thereof to extend and retract the dead bolts concurrently;
• means for oscillating the manual bolt-operating member about its axis of rotation to move the ends of the dead bolts into and out of engagement with the keeper surface;
• an extension on said manual bolt-operating member located so that when the dead bolt lock assembly is in an extended position, the extension is normal to the direction of bolt movement and pointing in the direction of the free edge of the door;
• and a roller on the extension for engagement with a keeper on the wall, said roller having an axis of rotation that intersects the axis of rotation of the manual bolt operating member.

In a close control mechanism attached adjacent to a free edge of a door swingable into and out of an opening within a wall, a dead bolt lock assembly including a frame immovably mounted on the door and a pair of dead bolts, each having an end, the dead bolts movable within the frame for extension and retraction of the ends of the dead bolts into and out of engagement with a pair of keeper surfaces located on the wall and extending in the direction of extension and retraction;

• a first surface on one end of each dead bolt transverse to the direction of movement, angularly oriented for substantially the full thickness of the bolt, facing in the direction of extension, facing in the direction the door swings when the door is swung out of the openings in the wall, facing the keeper surface when the door is in the opening and when the dead bolt lock assembly is in an extended position and facing the door when the dead bolt lock assembly is in a retracted position;
• a rotatable member in said one end of each dead bolt engageable with the keeper surface to facilitate both extension and retraction of the bolt relative to the keeper, a second surface at said one end of each dead bolt extending in the direction of bolt movement, facing the keeper surface when the dead bolt lock assembly is in an extended position and facing the door when the dead bolt lock assembly is in a retraction position, said rotatable member extending beyond said second surface in rolling engagement with the door or the keeper surface during extension or retraction of the dead bolts;
• a manual bolt-operating member rotatably supported in the frame;
• a pair of rod members operatively connected to the dead bolts and to the bolt-operating member eccentrically of the axis of rotation thereof to extend and retract the dead bolts concurrently;
• said manual bolt-operating member having a face with a circular recess concentric with its rotary axis and being rotatable by a first handle on one side of the door and selectively by a second handle on the opposite side of the door, wherein a rod is movable from said one side of the door through said operating member along the rotary axis to selectively enable or disable the handle on said opposite side of the door, said second handle secured to a rotary member coaxial with the bolt-operating member, said rotary member having a cylindrical portion received in said recess, said rotary member and bolt-operating member being rotatable relative to each other and each having a central aligned aperture for receiving said rod, the apertures and rod being constructed to permit relative movement of the rod longitudinally but not rotationally with respect to the bolt-operating member and rotary member, and means to positively locate and retain said rod in either of two longitudinally positions, one where it is received in the central aperture of the bolt-operating member but not in the central aperture of said rotary member, and another where it is received in both central apertures.