A frame for a traffic door having a leading edge, trailing edge, top edge, and bottom edge. The frame includes a trailing edge frame member having first and second ends and configured to extend along the trailing edge of the traffic door. The trailing edge frame member is a monolithic body having a first portion and a second portion, wherein the first portion extends between the first and second ends in a continuous and linear manner. The trailing edge frame member further includes a first cutout from the second portion of the trailing edge frame member adjacent the first end and a second cutout from the second portion of the trailing edge frame member adjacent the second end to define a central tab. A traffic door having such a frame is disclosed. A method of forming a traffic door with such a frame is also disclosed.

An audio/video (A/V) device may include or accommodate a viewer through a barrier. For example, an A/V device may include a first component for installation on an exterior surface of a door, a second component for installation on an interior surface of the door, a viewer that extends through an opening in the door, and a flexible connector that electrically couples the first component and the second component. In some instances, the first component may include an opening for the viewer, a camera, and an input device in substantial vertical alignment. The A/V device may further include a shutter that moves between a first position, in which the shutter is proximate to the viewer, and a second position, in which the shutter is not proximate the viewer. Additionally, the A/V device may include rings interposed between each of the first and second components and the door.

The door viewport with cross-door locking bar laterally spans the door frame with a viewport exterior lip on the door and an interior face plate near an interior of the door forming, in one instance, a mid-bar capture channel. Alternatively, the viewport has an interior extension coacting with a complementary interlocking element on the cross-bar's midpoint. Either construct holds the cross-door locking bar substantially at its mid-point. Cross-bar terminal end mounts removably attach the cross-bar to the door frame. One type of mount is an L-bracket. Another type of mount is a controllable transverse extension member forcing a door frame plate against the door frame. A user-controlled extension means forces the cross-door locking bar away from the door frame plate, with either a screw drive system or a grooved rod with spring loaded lever control.

The door viewport with cross-door locking bar laterally spans the door frame with a viewport exterior lip on the door and an interior face plate near an interior of the door forming, in one instance, a mid-bar capture channel. Alternatively, the viewport has an interior extension coacting with a complementary interlocking element on the cross-bar's midpoint. Either construct holds the cross-door locking bar substantially at its mid-point. Cross-bar terminal end mounts removably attach the cross-bar to the door frame. One type of mount is an L-bracket. Another type of mount is a controllable transverse extension member forcing a door frame plate against the door frame. A user-controlled extension means forces the cross-door locking bar away from the door frame plate, with either a screw drive system or a grooved rod with spring loaded lever control.

A refrigerator includes: a cabinet forming a storage space; a door for opening and closing the storage space and provided with a receiving space; a see-through portion extending through the door and communicating with the receiving space; a door light for illuminating a rear space of the door; a transparent panel assembly for shielding the see-through portion and becoming transparent or opaque so as to selectively visualize the see-through portion according to On/Off states of the door light; and a heat insulating member, formed along a perimeter of the transparent panel assembly, for insulating a perimeter portion of the transparent panel assembly.

A refrigerator includes: a cabinet forming a storage space; a door for opening and closing the storage space and provided with a receiving space; a see-through portion extending through the door and communicating with the receiving space; a door light for illuminating a rear space of the door; a transparent panel assembly for shielding the see-through portion and becoming transparent or opaque so as to selectively visualize the see-through portion according to On/Off states of the door light; and a heat insulating member, formed along a perimeter of the transparent panel assembly, for insulating a perimeter portion of the transparent panel assembly.

A high security two-way virtual cross-barrier observation and communication device has a mounting frame with a hardened core, a pair of digital displays, and a pair of cameras. The mounting frame may correspond to a typical interior door of a building or a relevant component of a vehicle, aircraft, or other relevant application. The hardened core is bullet-resistant and fire-resistant to protect occupants of a protected space from harm. The digital displays and cameras are positioned on opposing sides of the mounting frame, each camera transmitting a live video feed to the opposing display, creating the appearance of a window while protecting occupants. The digital displays may be used to display any desired information. An emergency protocol may be activated to communicate with emergency services. A plurality of laminate layers bond and encapsulate the displays and cameras to the hardened core, forming a rugged, self-contained unit with no moving parts.

An emergency entryway system that provides for the detection of occupants in a room, fires outside of a door, and sealing the entryway during a fire emergency is disclosed. The emergency entryway system includes a door enclosed by a door frame, at least one display unit mounted in one side of door and at least one camera mounted in the door frame on the opposite side of the door, whereby the display unit in the door displays an image transmitted from the camera from the other side of the door frame and door. The door frame of the emergency entryway system may include at least one of a smoke detector, a carbon monoxide detector, or a radon detector, at least one fire extinguisher, an oxygen sensor, an alarm, a gas inflator canister, and an inflatable tubing configured to seal a space between the door and the door frame during a fire emergency.

An emergency entryway system that provides for the detection of occupants in a room, fires outside of a door, and sealing the entryway during a fire emergency is disclosed. The emergency entryway system includes a door enclosed by a door frame, at least one display unit mounted in one side of door and at least one camera mounted in the door frame on the opposite side of the door, whereby the display unit in the door displays an image transmitted from the camera from the other side of the door frame and door. The door frame of the emergency entryway system may include at least one of a smoke detector, a carbon monoxide detector, or a radon detector, at least one fire extinguisher, an oxygen sensor, an alarm, a gas inflator canister, and an inflatable tubing configured to seal a space between the door and the door frame during a fire emergency.

A shade adapted for covering a classroom viewing window and assisting with compliance with emergency protocol during an emergency is disclosed. The shade may include a plurality folds connected to each other by a plurality of hinges configured to cover a classroom viewing window. Emergency related information and status indicators may be revealed upon the unfolding of the shade to assist teachers, school officials, police, and others to comply with established school emergency protocol. The shade further fulfills the requirement that the classroom viewing window be covered during an emergency lockdown. The shade may function as a standard “Exit” sign during non-emergency time. Another shade may include a case holding a material portion with handles that enable the shade to be moved up and down.