Abstract: A ventilating tube may include a body through which air is flowable in an air flow direction and a sound attenuating mechanism for attenuating airborne noise. The sound attenuating mechanism may be a wavelength resonator, which may include at least one resonance chamber. On one side, the at least one resonance chamber may have an opening which opens the at least one resonance chamber into the body transversely to the air flow direction.

Abstract: A gate below an elevator car which prevents access to an elevator hoistway. The gate slidably mounts behind a toe guard and retracts upwardly if the bottom of the gate encounters a person, object or the floor of the elevator pit during downward travel of the elevator. The gate latches when fully retracted so that it may be out of the way during maintenance. A microswitch is wired into the emergency stop circuit that engages when the gate is latched. A trip wire defining the bottom edge of the gate is also wired into the emergency stop circuit, so that the elevator will stop its downward travel if it encounters an obstruction. Rubber bumpers on the bottom edge of the gate cushion impact to people or objects who happen to be below the elevator car and are struck by the gate during downward elevator movement.

Abstract: A hurricane storm resistant door assembly with a door having a frame; closed cell foam disposed within the frame; a front skin of a first fiber reinforced polymer substrate; a back skin, a top coat that covers the first and second fiber reinforced polymer substrates; at least one port door fixedly formed and secured in the foam; an opening in the port door; a double welded impact resistant grill over the opening with a leg extending from and intersecting center grid; a foot secured to each leg; a fastening hole centrally formed in each foot; a plurality of securing rings encircling a center grid member and two support barrier connections; a connection hole per foot disposed through the door, penetrating the skin and foam for fastening the double weld impact resistant grill to the door enabling the hurricane storm resistant door assembly to sustain 37 mph flying projectiles.

Abstract: Disclosed herein is a window or doorway membrane system for selectively preventing ingress or egress of persons, animals, objects, or other unwanted environmental effects. The system may include a membrane, a first engagement mechanism for securing one end of the membrane to a wall or other anchor point; and a second engagement mechanism for releasably securing the membrane to a active panel of a door or window.

Abstract: An apparatus for providing improved egress and greater safety for subterranean window wells. The apparatus has relatively low lifting force to allow people to escape fires and earthquake damaged buildings through egress windows. The apparatus can include mounts which are U-shaped and fit over opposing sides of the window well wall and are connected thereto. The mounts may have pivots which connect to an operator that applies upward force upon a grate assembly that covers the window well. The mounts and grate are hinged to pivot and allow the grate to be opened when needed. The operator has swivel and ball connections and an adjustable outboard connector.

Abstract: A security window assembly includes a frame coupled to an opening in a structure, a first window section coupled to the frame, and a second window section slidable within the frame relative to the first window section, where the second window section has a closed position where the first window section and the second window section substantially fill different portions of the opening and an open position where the first window section and the second window section substantially fully overlap each other. A security panel is coupled to the second window section so that the security panel is stowed within the structure when the second window section is in the closed position and at least partially fills the opening when the second window section is in the open position.

Abstract: Disclosed herein is a folding security window, in which an end of the security window is mounted to a window sill, the other end of the security window is connected to a window, a height-adjustable movable part is mounted to a vertical pole of the security window, a connecting means for connecting or disconnecting the security window to or from the window is provided, and the folded security window is not exposed to the outside. When the window is opened or closed, the security window is unfolded or folded, so that the security window does not spoil the appearance of the city. The movable parts mounted to upper and lower ends of the vertical pole enhance the adaptability and movability of the security window. The security window efficiently performs its original function without hindering ventilation, views, or light admittance.

Abstract: A rackable gate having a gate panel with spaced-apart rails connected to a plurality of first pickets and a second picket. The second picket attaches to the respective rails on a side edge opposing the attachment of the first pickets to the rail. Distal opposing ends of the rails are received and pivotally secured in openings defined in opposing gate posts. The gate racks or moves so that the rails are disposed at an oblique angle relative to the pickets. The opposing fastening of the second picket and the opposing distal end of the rail received in the post restrict the rail from pivoting away from the pickets when the panel is racked to track the contour of the terrain. A method of making a rackable gate is disclosed.

Abstract: The present invention is a barrier shield having selective transparent areas therein that incorporates particular optical glare and reflection reduction methods utilizing diffractive and grating techniques within a tilted planar surface having selective openings therethrough. This barrier shield is mounted within the closure door for correcting the transmissive optical imagery enabling the driver/operator to view the passengers through the closure door barrier shield using, typically, the inside rear-view mirror without compromise to safety or security.

Abstract: A safety window comprising a frame unit and central cartridge, on which are mounted security bars, is employed to provide an easy exit route for an operator in the event of an emergency. The safety window is maintained in the closed position by spring biased locking bar mechanism. When required, the operator manually activates the locking bar mechanism so opening the window. This process results in the central cartridge and associated security bars to pivot through 180° so as to locate in an open position that is clear of the frame unit.

Abstract: A gate for sliding windows or doors in a frame is provided. The gate provides two gate elements. The first element is attached to the window frame. The second element is attached to the sliding window. The two elements are coupled together to allow each element to slide across the other. The elements are positioned in the frame to create a barrier in a space created when a window is slid to an open position.

Abstract: A window safety system having a first and second vertical track installed as mirror images on opposite sides of a window frame. The system utilizes at least one elongate blocking element which extends across the window width and is secured to opposing guide elements which smoothly travel within the vertical tracks. A system cover is engaged at opposite ends to guide elements which travel in the vertical tracks. The guide elements are connected in series to one another by a flexible belt within the vertical tracks. The system cover interacts with a lower rail of a window sash such that when the window sash is raised to an open position, the system cover travels with the lower sash. This travel in turn causes the guide elements to translate within the vertical tracks and guiding blocking rods to a position laterally across the opening of the window. The blocking rods thereby prevent egress of a child or the like through the open window.

Abstract: A window safety system having a first and second vertical track installed as mirror images on opposite sides of a window frame. The system utilizes at least one elongate blocking element which extends across the window width and is secured to opposing guide elements which smoothly travel within the vertical tracks. A system cover is engaged at opposite ends to the vertical tracks to travel with lower window sash. The guide elements which are connected in series to one another by a flexible belt within the vertical tracks. The system cover interacts with a lower rail of a window sash such that when the window sash is raised to an open position, the system cover travels with the lower sash. This travel in turn causes the guide elements to translate within the vertical tracks and guiding blocking rods to a position laterally across the opening of the window. The blocking rods thereby prevent egress of a child or the like through the open window.

Abstract: An automatically openable lid for a receptacle structure has a safety device for preventing any accident in the presence of an obstacle in the range of opening and closing movements of the lid. The device includes a safety guard extending around a front surface of the lid and beyond a rear surface thereof. The guard is mounted on the lid in a semi-fixed manner such that the guard is normally kept immovable relative to the lid during the movement thereof and such that the guard is pivotally movable relative to the lid when the guard is hit by any obstacle during the movement of the lid. Responsive to the movement of the guard relative to the lid, a detecting means is operable to energize a brake for stopping the movement of the lid.

Abstract: A curtain rod for a sliding glass door in a wall comprising a first rod section, a pair of brackets mounting the first rod section on the door in position extending generally horizontally across a face of the door, a second rod section, and a bracket mounting the second rod section independently of the door in axial alignment with the first rod section. The first and second rod sections have a sliding fit with respect to each other and constitute an extensible rod assembly, the rod assembly being extended as the door is closed and contracted as the door is opened. The rod assembly is adapted to support a curtain extending across the face of the door in both closed and open positions of the door. The curtain rod further comprises a lock for preventing contraction of the assembly and thus the opening of the door.

Abstract: A curtain rod for a sliding glass door in a wall comprising a first rod section and brackets mounting the first rod section on the door in position extending generally horizontally across a face of the door, the first rod section being spaced laterally from the face for supporting a plurality of hooks or the like adapted to support a curtain. The curtain rod further comprises a second rod section and a bracket mounting the second rod section independently of the door in axial alignment with the first rod section. The first and second rod sections have a sliding fit with respect to each other and constitute an extensible rod assembly, the rod assembly being extended as the door is closed and contracted as the door is opened. The rod assembly is adapted to support a curtain extending across the face of the door in both closed and open positions of the door.

Abstract: A security vehicle, such as for transporting prisoners, having a passenger compartment with a door opening therein. The door opening is secured by first and second pairs of doors which can be locked independently of one another.