A privacy door assembly for installation in an aircraft relative to a flight deck door of the aircraft includes a door frame having a first post and a second post, where the second post comprises a latch recess. The privacy door comprises a latch positioned on an edge of the privacy door and arranged to engage the latch recess when the privacy door is in a closed position within the door frame. An access door is positioned in the privacy door, where the access door is rotatable from a closed position to an open position in a forward direction. A first mechanical door handle system including a mechanical combination lock is positioned on an aft side of the privacy door and coupled to the latch, and a second mechanical door handle system is positioned on a forward side of the privacy door and coupled to the latch.

A safety gate has two wall-mounted post assemblies, a main frame, and two connecting assemblies. The two wall-mounted post assemblies are mounted to two walls of an entrance. The main frame has two frame portion. The two frame portion can pivot with respect to each other. The two connecting assemblies are mounted on two sides of the main frame and detachably and pivotally connected to the wall-mounted post assemblies. A stopping assembly is elastically mounted on a side, near the main frame, of each wall-mounted post assembly and configured to limit one of the connecting assemblies. With such safety gate, a user can press either one of the stopping assemblies to withdraw into the wall-mounted post assembly, and the corresponding connecting assembly can be separated from the wall-mounted post assembly to open the safety gate. When the two stopping assemblies are pressed, the main frame can be detached.

The present invention relates to a hinged door locking device and, more particularly, to a hinged door locking device comprising a rotatable lever installed on a door frame separately from a main locking device generally used for security, wherein a side to be opened by rotation in the hinged door is brought into tight contact with the door frame at multiple points in the longitudinal direction by operating the lever. Thus, the hinged door locking device is configured to readily maintain the tight contact and has high usability as an auxiliary locking device.

A security apparatus that functions as a detent which inhibits the motion of a door hinge. This security apparatus includes a back panel, a stop bracket, and a slotted hole. The back panel is a rigid plate that functions as a bar that inhibits the motion of a door. The back panel has a first panel edge and a second panel edge. The first panel edge and the second panel edge are edged are located at opposite ends of the back panel, forming it's the physical boundaries of the back panel. The stop bracket is a rigid beam that is connected to the first panel edge of the back panel. This enables the stop bracket to limit the distance a door hinge may travel through the slotted hole. The slotted hole is cut into the back panel from the second panel edge to next to the stop bracket.

A safety gate includes a first column, disposed on a first side of an elevator shaft, a second column, disposed on a second side of the elevator shaft, a first gate panel, and a second gate panel. The first gate panel is coupled to the first column via a first locking hinge. The second gate panel is coupled to the second column via a second locking hinge.

A portable door locking system includes a door that is hingedly positioned in a door jamb and the door includes a hinge. A locking unit is provided and the locking unit is selectively coupled to the hinge. The locking unit extends laterally between the door and the door jamb. In this way the door abuts the locking unit when the door is urged into an open position. The locking unit inhibits the door from being opened to inhibit an intruder from entering the room.

Lockbox systems for securing items in a vehicle. In one embodiment, a hollow rectangular body has an open side which may be closed by a door. One or more L shaped locking members are disposed on the rear of the door adjacent a first longitudinal side. As the door is closed, the members are positioned to reside in locking recesses in a wall of the body, abuttably locking the door at the hinged side. Near a second side of the door, a locking mechanism is disposed that can be actuated to move a locking bolt into a bolt recess to secure the door in the body opening. The rear side surfaces of the door may be beveled to pair against a ridge disposed inside the opening to deter attempts to pry the door open.

This invention relates to a canopy locking and releasing apparatus for mounting a canopy to the fuselage of a vehicle. The canopy locking and releasing apparatus is comprised of several mechanisms. These include internal canopy locking and releasing mechanism, the external (Type A, B, or C) canopy locking and releasing mechanisms, a hinge plate and base mechanism, a hinge retaining pin, and a fuselage locking and releasing device for the hinge base. The apparatus is mounted on the sides of a canopy and attached to the cockpit of a vehicle. This apparatus allows for quick and easy opening of the canopy for routine or emergent access and driver entry or egress. An unique advantage of the canopy side mount locking and releasing hinge mechanism for vehicles is that the cockpit is easily accessible from either side of the vehicle, from the inside and outside of the vehicle, or if necessary, from both sides of the vehicle at once. Additionally, there is shown an alternative use for the internal locking and releasing mechanism and the retaining pin.

A safety gate includes a first column, disposed on a first side of an elevator shaft, a second column, disposed on a second side of the elevator shaft, a first gate panel, and a second gate panel. The first gate panel is coupled to the first column via a first locking hinge. The second gate panel is coupled to the second column via a second locking hinge.

A hinged hatch in a gas containment cover particularly for a sewage treatment tank has a slide bolt contained within a shaped channel of an extrusion of the hatch, positioned to engage the bolt at a mid-level position of the adjacent fixed beam or other member of the tank cover. The position of the bolt enables the hinged hatch to fully seal against a rubber-covered lip of the adjacent structural member, so that the bolt latch does not compromise integrity of the gas seal. As the bolt is slid into locking position it forces the hatch cover down more tightly against the gas seal.