The safe door is a releasable door comprising a fire resistant body attached to a door jamb to provide privacy. Safe door comprises a frame less door panel attached to a door jamb by magnets engineered to release when a breakaway force is applied to the door in any direction. Safe door is assembled with welding and adhesive of a foam core, a fire sock and a protective sheet inside a cover of vinyl sheeting. The fire sock and cover are closed to prevent moisture penetration or disassembly to protect people and property. A handle on a handle side and a hinge on a hinge side attach where a traditional door may attach to allow door to move from an open position to a closed position.

The safe door is a releasable door comprising a fire resistant body attached to a door jamb to provide privacy. Safe door comprises a frame less door panel attached to a door jamb by magnets engineered to release when a breakaway force is applied to the door in any direction. Safe door is assembled with welding and adhesive of a foam core, a fire sock and a protective sheet inside a cover of vinyl sheeting. The fire sock and cover are closed to prevent moisture penetration or disassembly to protect people and property. A handle on a handle side and a hinge on a hinge side attach where a traditional door may attach to allow door to move from an open position to a closed position.

A lock assembly is provided and includes: a driving member; an acting member connected to the driving member; an active member cooperating with the acting member for operation; and a main lock member interlocked with the active member. The driving member drives the acting member to swing and the acting member touches the active member so as to displace the active member and synchronously displace the main lock member. Therefore, the lock assembly is buried in a door frame through cooperation of the driving member, the acting member and the active member, so as to be protected from being damaged or stolen.

A fire door clearance system is disclosed that includes a non-flammable material that is fastened at a first portion thereof on an inner side thereof to any of a door and door frame, and an intumescent material applied to the inner side of the non-flammable material at a second portion thereof.

In a high-security sliding-door apparatus for closing and opening a corridor, the door having (a) a door frame having a track and a bi-directional effector, (b) a carriage having track-engaging rollers, (c) a slide plate slidably secured to the carriage and driven by the effector, and (d) a controller controlling slide-plate movement and enabling the door to be continuously closed but not locked, the improvement comprising centering apparatus for relative positioning of the slide plate and carriage, the centering apparatus including (1) a yoke attached to the slide plate at a yoke pivot and having a yoke cam surface thereabove, (2) a carriage-attached yoke-cam follower, and (3) springs having proximal ends attached to the yoke spaced above the yoke pivot and distal ends each attached to the carriage at points offset from the yoke pivot in opposite lateral directions, centering the door with the slide plate when unlocked.

A door has a core that includes a first major surface having one or more first recesses, a second major surface opposite to the first major surface, and fire retardant material such as intumescent material applied to the first recesses and no more than about 20 percent by surface area of a remainder of the first major surface excluding the first recesses. A door skin includes an interior surface, an exterior surface, at least one contoured panel portion establishing a protrusion extending on the interior surface and an opposite depression extending into the exterior surface, and fire retardant material such as intumescent material applied to at least one of the protrusion or the depression and no more than about 20 percent by surface area of the remainders of the interior surface excluding the protrusion and the exterior surface excluding the depression.

A door has a core that includes a first major surface having one or more first recesses, a second major surface opposite to the first major surface, and fire retardant material such as intumescent material applied to the first recesses and no more than about 20 percent by surface area of a remainder of the first major surface excluding the first recesses. A door skin includes an interior surface, an exterior surface, at least one contoured panel portion establishing a protrusion extending on the interior surface and an opposite depression extending into the exterior surface, and fire retardant material such as intumescent material applied to at least one of the protrusion or the depression and no more than about 20 percent by surface area of the remainders of the interior surface excluding the protrusion and the exterior surface excluding the depression.

A first adjustment member includes a first adjustment traveling face that forms a traveling face continuous with a first body traveling face, and is arranged so that the first adjustment traveling face at least partially protrudes into a second gap. A second adjustment member includes a second adjustment traveling face forming a traveling face continuous with a second body traveling face, and is arranged so that the second adjustment traveling face at least partially protrudes into the second gap. A gap across which the first adjustment member and the second adjustment member oppose each other is a first gap, and an adjustment mechanism capable of changing the position of the first gap in a direction parallel with a travel path is provided.

A first adjustment member includes a first adjustment traveling face that forms a traveling face continuous with a first body traveling face, and is arranged so that the first adjustment traveling face at least partially protrudes into a second gap. A second adjustment member includes a second adjustment traveling face forming a traveling face continuous with a second body traveling face, and is arranged so that the second adjustment traveling face at least partially protrudes into the second gap. A gap across which the first adjustment member and the second adjustment member oppose each other is a first gap, and an adjustment mechanism capable of changing the position of the first gap in a direction parallel with a travel path is provided.

A door frame system comprises a wall and a door frame. The door frame comprises a sub-buck portion and a shell portion, coupled to the sub-buck portion. The sub-buck portion comprises a sub-buck mounting arm including at least one mounting aperture, a sub-buck rabbet arm coupled to one end of the sub-buck mounting arm and a sub-buck support arm coupled to the sub-buck mounting arm opposite the sub-buck rabbet arm. The sub-buck portion is surface mounted to a single surface of the wall through the at least one mounting aperture.