Abstract: An assembly for opening a door latch used in combination with a door, wherein the assembly includes a push-bar with an end piece that envelopes the door latch, the end piece being integrally connected to the bar at one of its ends and, connected at the other end to a spring which holds the assembly outward and away from the door, the other end of the spring is fastened to the door.

Abstract: A method for unlocking a window pane secured by a fastening element to a frame element of a window frame, with an inflatable pressure tube being located between the window pane and the frame element, said tube, upon being inflated, forcing the window pane out of the frame element. For reliable and improved element unlocking of the window pane, the pressure tube is inflated by actuation of at least one pyrotechnic gas generator connected to the pressure tube.

Abstract: A removable security bar apparatus for preventing ingress to a building opening such as a window or door. The apparatus includes a grille and moveable latch remote from the opening. The apparatus may be quickly removed from the opening and used as a ladder to exit the building through the opening in the event of an emergency.

Abstract: Locks for security grills used on doors or windows tend to be structurally complicated, and consequently expensive to produce and/or install. A relatively simple lock assembly for use with a security grill includes a box for mounting on one edge of a grill, a slot in one side of the box for opposing the frame of the door or window when the grill is closed, a plate for mounting on the outside of the frame in opposition to the box, whereby the plate completely covers the slot when the grill is closed, a bolt extending through the plate for rotatable mounting in the frame in alignment with the slot, an ear on the outer end of the bolt for insertion through the slot into the box when the grill is moved to the closed position, and a handle on the inner end of the bolt for rotating the latter between a release position in which the ear can be inserted into or removed from the box via the slot and a locked position in which the ear is retained by a projection in the box.

Abstract: An easy out fire escape window gate comprising a gate frame mounted to a window frame of a window on an inner side of an exterior wall of a building. A pair of protective shutters are provided. Components are for connecting opposite sides of the protective shutters to opposite sides of the gate frame. The protective shutters can swing to an open position and a closed position. A structure is for locking the protective shutters to the gate frame in the closed position, to prevent an entry through the window from the exterior of the building to reduce burglaries. A facility is for quickly unlocking the protective shutters from the gate frame. The protective shutters can go into the opened position, to allow people within the building to safely exit through the window during a fire.

Abstract: A roof hatch for the roof of a vehicle, such as a large capacity vehicle. The roof hatch includes a rectangular shaped outer hatch frame, a rectangular shaped inner hatch frame received at the outer hatch frame, a rectangular hatch cover of glass over the open area defined by the hatch frames, a sealing frame between the outer hatch frame and the hatch cover. The hatch cover is mounted on the outer hatch frame by one of adapter angles, or manually adjustable or electromotively adjustable adjusters, with the adjustable adjusters allowing the hatch cover to be opened with reference to the outer frame. The choice of the ways for attaching the hatch cover to the outer hatch frame enable the roof hatch of the invention to be supplied in modules with the user selecting a particular version. In addition, where the hatch cover is openable with reference to the outer frame, a lock can prevent such opening, handles on the lock can open the lock.

Abstract: A spring-loaded quick-release mechanism to a locking security grille is triggered by (i) manual activation, preferably through a foot switch, or (ii) fire, typically through a thermal fuse. Fins incorporated in, and/or affixed to the bars of, a security grille are preferably rotating, normally in phase, so as to serve as a louver or, when completely closed, an interlocked security shield, or panel. One locking release mechanism, which may optionally be quick release, has a sliding bar with alternate (i) extension and (ii) notch regions that respective engage the ends of solid, purely cylindrical, elongate prisms, normally cylindrical bars, to respective lock, and disengage, these prisms in a security grille. Finally, a security grille with standard universal retention assemblies variously serves to retain any, and any combinations, of tubular bars, solid bars, fins mounted to bars, and solid fins.

Abstract: A turnstile is disclosed which is easily adapted to operate in either a clockwise or counterclockwise direction of rotation and which does not permit reverse rotation during operation. Resistance to rotation in the reverse direction is achieved by means of a drag shoe mechanism. As a rotor mechanism rotates about a corresponding stator mechanism it trails a drag shoe by a rigid connecting rod, or drag arm, across a bearing surface. The drag arm is disposed at a non-perpendicular angle. In reverse motion the angularly inclined drag arm forces the drag shoe to jam into the bearing surface and thereby act as a brake. The turnstile is provided with a quick release wrench, an safety release bolt which protrudes beyond the housing of the turnstile mechanism, and emergency release instructions labels clearly visible on the top and pillar of the turnstile.

Abstract: A window guard locking device (34) comprises a flange member (36) having a keyhole (42) therethrough, a member (40) having a central cavity (50), an intermediate member (38) having an opening (46) disposed between the flange member (36) and the member (40) with the axis of the keyhole, the opening and the central cavity being coincident, and at least one projection (48) extending inwardly from a wall of the opening (46) adjacent the keyhole (42) with a surface of the projection (48) being aligned with a respective wall of the keyhole (42).

Abstract: An electrical window operator for opening and closing a window comprises at least one arm connected pivotally and detachably in a first end with a sash coupling member slidable side within a limited part of the length of the sash, said arm being pivotally connected at the other end with a second coupling member connected with the main frame. An operator housing arranged at the main frame accommodates an elongate drive shaft with a threaded section engaged by a nut element forming part of the second coupling member and an electrical drive unit in axial extension of the drive shaft.

Abstract: A life saving system that allows escape from secured premises is provided. The system includes door/window locks that are normally held in the locked position by the presence of an electrical current through solenoids contained in the locks. When an accessory fire/smoke alarm is activated, current through the solenoids is interrupted, thereby automatically unlocking the doors or windows. Uninterruptable power supplies are provided that can operate from alternating current or direct current sources. Additional security is provided by an optional key lock shunt box that prevents tampering by unauthorized users.

Abstract: This invention is a combination door latch actuating handle and an exit/entry operator support assembly, mainly for the interior but also usable for the exterior of a vertically oriented door for any agricultural or industrial equipment with a cab. It consists of two nearly full width of door, U-shaped, interlocking and generally horizontally mounted pieces. One U-shaped piece is a mounting/pivot and stops bracket attached to the door, and the other is a swingable door latch actuating handle/grab bar. An unlatching position is oriented generally upward and outward, actuating the latch with a cable; and a simple gravity designed latching position is oriented inwardly and downward. These motions are in perfect harmony with the operator's movements as one exits or enters the cab. It increases the safety of an operator over existing designs by providing a more visible, accessible and easier to use door latch actuating handle for emergency exits.

Abstract: A positive latch system for sliding doors having a break away feature, which includes a door which is capable of sliding along a track between open and closed positions; means for allowing the sliding door to breakaway from its linear track, and swing fully open for greater access to the opening; latching mechanism positioned on the door, for allowing the door to positively latch closed either from the sliding configuration are the breakaway configuration, the mechanism including a latch bolt depressible upon engaging the latch plate, from at least two directions, each direction the latch bolt depressing for engaging into the latch plate port, and means on the latch plate for allowing the latch bolt to depress when engaging from either of the two directions.

Abstract: A method of operating a turnstile gate for the purpose of controlling human thoroughfare. A thoroughfare-obstructing structure rotates around a fixed axis and has thoroughfare-obstructing means extending out of it and separated by equal angles. The thoroughfare-obstructing means can be shifted out of their usual state, the operational state, into a non-operational state, as the thoroughfare-obstructing structure rotates. The thoroughfare-obstructing means revolve out of a thoroughfare-obstructing position and into a thoroughfare unobstructing position. Another arm revolves into the thoroughfare-obstructing position whenever the arm directly downstream of it revolves out of the thoroughfare-obstructing position and into the thoroughfare unobstructing position.

Abstract: A mantrap in which a demarcation in shape of a segment of an arc is provided at one side of a passage. The open side of the demarcation faces the other side of the passage. The demarcation extends, furthermore, along a predetermined angle of circumference and has a barrier element that rotates around a vertical axis positioned approximately in the center of the demarcation and is provided with leaves extending out from the vertical axis of rotation and including equal angles. The leaves have grating rods positioned separately and one above another. A barrier rake extends out from an axis of the barrier element to the other side of the passage, and has grating rods displaced in position from the grating rods in the leaves and one above another. The barrier-rake rods allow unimpeded rotation of the barrier element. The barrier rake, furthermore, is a gate element, and the barrier element is a rotating door with at least two leaves.

Abstract: A pressure relief panel assembly for protecting a building against over-pressure caused by explosion. The assembly has a panel pivotally connected to a frame and held by a calibrated magnet and striker set which releases when a predetermined over-pressure occurs. A cable restraint attached to a shock absorber, or a linkage of two arms attached to a shock absorber, limits the extent to which the panel can blow open. A spring mounted on one of the arms catches the other arm when the panel has blown open, preventing the panels from reclosing and thereby preventing implosion damage to the building. Alternatively, or additionally, the panel, after opening, may be held partly open by a stop bar which pivots to prevent the panel from fully closing, to prevent implosion damage to the building after the explosion.

Abstract: A utility vault shroud having a hatch cover is provided with a motorized operator for opening and closing a hatch for access thereto. The operator is mounted across the shroud access opening between the side walls thereof with a horizontal shaft which is connected to the hatch cover by pivot arms. In a preferred arrangement a battery back-up is provided for operation during power failure.

Abstract: The invention provides a security panel release mechanism for a sliding door or window assembly of the type having a pane movable in a frame to an open attitude in which its free edge is spaced from the frame member with which it engages when closed, the opening so exposed being secured by a security panel; characterized in that (1) the security panel is so mounted that it is movable between a closed position in which it is effective to prevent access to the opening and an open position in which the opening is available as an emergency exit, (2) the security panel is normally held in the closed position by lock means retaining the security panel adjacent the pane frame, and (3) the pane is fitted with lock release means normally ineffective so that the pane opening and closing functions are available, but adapted to be rendered operative in an emergency whereby sliding movement of the pane causes its lock release means to render the security panel lock means inoperative to free the security panel for movement

Abstract: A security system for protecting building openings with an iron work assembly for protecting the opening against unauthorized entries. The iron work assembly includes first and second portions that are rigidly mounted to each other along an abutting edge and the other portion is releasably mounted to the building. The portion that is releasable mounted to the building is of sufficient dimensions to permit a person through. A threaded positional rod has two sections joined to each other and they can be selectively maintained either coaxially with respect to each other or at another predetermined angle. A third headed section is coaxially and telescopically threaded to one of the two sections. A user keeps the sections at an angle when it wants to keep the security system locked and coaxially aligns them when the user wants to release it.

Abstract: A door positioning mechanism with a moveable carriage driven by a motor through a lead screw, wherein the moveable carriage is connected to open and close the door by movement of the door rectilinearly along a track through the expedient of a drive train utilizing a multiple sheave and cable connection between the door and the moveable carriage. A hand disconnect is provided to disable the positioning mechanism and allow manual movement of the door. A thermal (fire switch) dead weight control is also provided to over-ride the positioning mechanism and automatically shut the door.

Abstract: A door which can be automatically opened and closed can have an additional releasable connection for allowing the door panels to be manually opened by disengaging the door panels from the device for automatically opening and closing the doors. In particular, two-panel doors which execute a combined sliding and rotational motion around a vertical axis of rotation during the closing and opening motion can be configured with such a device to make it possible to use the doors in evacuation and emergency routes, i.e. routes in which a manual force can be applied from inside to open the door panels. Further, so that the door does not remain open, there can also preferably be switches or circuits in the construction which indicate that a manual opening of the door panels has occurred, in which case an electronic signal can be generated to place the drive device in motion, to thereby automatically restore the connection between the door panels and the drive system.

Abstract: A pressure relief panel assembly for buildings in which explosions may occur includes a panel pivotally coupled to a frame for movement between a normal closed position and an open position and a calibrated magnet and striker set for holding the panel in its closed position. The magnet has a maximum holding force substantially in excess of a known force to which it is subjected at a predetermined blow-out pressure and a striker has secured thereto at least one non-magnetic shim defining a face for contact with the magnet. The shim thickness is selected to reduce the effective holding force exerted on the striker by the magnet, to the said known force.

Abstract: A power door operator for multi-passenger mass transit vehicles, typically buses, features electric actuation of dual swinging doors. A manual activator having an ergonometrically correct actuating plunger, for emergency door opening, operates a sleeved clutch. Fixed to the sleeve clutch is a drive bar with arms having individually adjustable lengths. The drive arms actuate outboard door shaft levers on individual door leaf through door drive rods intermediate the door arms and drive arms. Each rod incorporates spherical rod ends. The drive arms also actuate limit switches establishing door opened and door closed circuitry for energizing the electric drive system. The adjustable length clutch door drive arms provide a convenient device for controlling door leaf closing sequence and residual or door holding force when the doors are in a closed position.

Abstract: A safety device in a motor vehicle having side windows fabricated from toughened laminated safety glass with an intermediate plastic film layer. The safety device includes a sensor device for detecting a side collision, and a window striker device for breaking a side window, which striker is activated by an appropriate signal generated by the side collision detecting means. In its broken condition, the window provides a yielding, flexible surface for cushioning the impact of a passenger's head. In various embodiments of the invention, the striker device may be actuated mechanically, or electrically by use of a pyro-technic charge. The side collision detection means is an elongated, fluid filled sensor chamber disposed in a side region of a vehicle. In one embodiment, the fluid filled chamber is contained hidden within an external door guide or bumper. In a second embodiment, the fluid filled chamber is disposed internal of the door body to prevent incidental triggering.

Abstract: An aircraft canopy breaking device, having means for penetrating the canopy lazing material upon application of an applied force from the rising ejection seat to the penetrating means. The device further comprises prepositioning means for prepositioning the penetrating means at a fixed distance from the canopy glazing material, shielding the penetrating means from inadvertently contacting the canopy glazing material, other material or personnel, and compressing whereby upon application of a force the penetrating means contacts the canopy glazing material causing crack propagation in the canopy glazing material.

Abstract: A security grille (1) adapted to securely close off a window, but which may be manually released from within the building including the window while maintaining security preventing unauthorized access from the exterior of the building. The grille (1) is attached along one edge by hinges (2), or by a releasable mechanism, and is lockable in position by locking device (20) on an opposite edge. The locking device (20) may including locking bolts which protrude out through holes (21, 24 ) which engage holes (22, 25) within a surrounding frame (32). The grille (1) can comprise two portions (1a, 1b) joined at their mating edges by further hinges (23). The frame (32) is secured by bolt devices (26), or the like to the wall structure of the building surrounding the window to be protected.

Abstract: A pressure relief panel assembly for protecting a building against over-pressure caused by explosion. The assembly has a panel pivotally connected to a frame and held by a calibrated magnet and striker set which releases when a predetermined over-pressure occurs. A cable restraint attached to a shock absorber, or a linkage of two arms attached to a shock absorber, limits the extent to which the panel can blow open. A spring mounted on one of the arms catches the other arm when the panel has blown open, preventing the panels from reclosing and thereby preventing implosion damage to the building. Alternatively, or additionally, the panel, after opening, may be held partly open by a stop bar which pivots to prevent the panel from fully closing, to prevent implosion damage to the building after the explosion.

Abstract: An operating mechanism for an aircraft door performs all the door motions and locking operations for the opening and closing of the door with the aid of electric motors which operate the respective elements of the mechanism through gear drives or through spindle drives to provide the power or torque moment for the respective motion. The motion sequence of the door operation is stored as a respective program in a memory of a central processing unit which in turn operates the electric motors in accordance with the programs. Operator initiated control signals are also provided to the central processing unit through respective panels. The pressurization and depressurization of the aircraft cabin is integrated into the door control so that pressurization cannot take place unless the doors are fully closed and locked and so that door opening cannot take place until depressurization is completed.

Abstract: An automatic sliding door in which a main drive moves at least one door panel to open and closed positions. An electromagnetic clutch is located between the main drive and the door panel for the purpose of disconnecting the panel from the drive and to open the door in event of a power failure. An auxiliary drive is connected to the door panel and stores energy received when the door panel is in a closed position, so as to drive the door to the open position when the clutch disconnects the main drive from the door panel in event of power failure. The auxiliary drive has a rubber cable actuated always with the door so that the auxiliary drive can be tested with every movement of the door panel.

Abstract: A cable gate is arranged to include a plurality of spaced housings, with the first housing including a lift arm, the lift arm providing guidance for a gate cable directed therethrough, with the gate cable including a second distal end mounted to the second housing, with the first distal end fixedly secured interiorly of the first housing, with a slide member mounted upon a track to effect displacement of the cable within the first housing effecting lifting of the lift arm and the gate cable from a first lower position within a storage channel to a second horizontal position adjacent an upper distal end of each housing.

Abstract: A high speed door assembly, comprising an actuator cylinder and piston rods, a pressure supply cylinder and fittings, an electrically detonated explosive bolt, a honeycomb structured door, a honeycomb structured decelerator, and a structural steel frame encasing the assembly to close over a 3 foot diameter opening within 50 milliseconds of actuation, to contain hazardous materials and vapors within a test fixture.

Abstract: A releasing system for retaining a cover over an opening in a structure. A penetrating member connected to the protective cover is tapered at one end and has a notch just beyond the taper. A housing contains a spring latch made of bent steel strip. One end of the spring latch is firmly attached to the housing and the free end of the spring latch is located behind and partially covers an opening in the housing. The spring latch is positioned so that the tapered portion of said penetrating member will push the free end of the spring latch aside when the penetrating member is entering the housing, and the free end will fit into said notch when the penetrating member is essentially fully inserted into said housing. One end of a release cable is attached to the spring latch near its free end and when pulled with sufficient force will cause the free end of the spring latch to be pulled out of the notch releasing the penetrating member.

Abstract: The invention relates to an emergency exit window for vehicles such as school buses. Spring biased latches are carried by the upper part of a window pane. The spring biased latches have bolts which engage stops at various locations on opposite sides of the window frame surrounding the window. The latches may be normally operated individually by hand to riase and lower the window between a ventilating position (including half-open and other partially open positions), and a fully closed position. The window is equipped with an emergency handle which may be used to pull the latches towards each other, and thereby enable the window to assume a fully open position. In the fully open position, inversion stops prevent the window from inadvertently closing in the event that the vehicle is overturned. The latches are housed in a latch cover which has latch openings. The latch openings are sized so that they prevent manual use of the latches to cause the window to be fully opened.

Abstract: A pneumatically-powered traffic control gate is disclosed. This gate contains a cylinder and piston for raising and lowering its gate arm, a means for adjusting the alignment of the traffic gate arm, a pneumatic means for sensing the presence of an obstruction to the movement of said traffic gate arm, and a means for reversing the movement of the piston and the gate once the obstruction has been sensed.

Abstract: Combined vehicle vent and escape hatch having a frame bounding a roof opening, a cover hingedly connected to opposite sides of the frame by hinge brackets for limited venting movement relative to one or more of the sides, one of the brackets being separable into cover and frame parts and normally prevented from separating by a cammable release rod engaging the cover part and a frame-backed movable stop plate backing the rod, and an emergency button instanding from the cover and when pushed operative to project the cover from all of said sides to full venting position and separate the parts of the separable bracket for enabling the cover, as an escape hatch, to be swung about the opposite bracket to open position. For extending the service life of the combined vent and hatch, an inner panel of the cover is backed by a rigid metal backup plate on which, for relieving the panel of stress, are hung the operating parts attached to the cover.

Abstract: A sliding door with two for example panels coupled with a belt-drive mechanism driven in turn by a motor. The panels are also connected to an auxiliary drive mechanism that is provided with energy by the panel as it slides into a closed position and that can move the panel when the clutch is deprived of current. At least one programming switch, a motion sensor, and a limit switch activate regular controls that move the panel automatically. Self-monitoring additional electronic controls constitute a door-safety module.The object is to monitor the opening of the door in response to a signal from the motion sensor and to allow self-testing of the function of the auxiliary drive mechanism and ensure inherent reliability of the door-opening monitoring process. A door-safety module is controlled in accordance with a program and has at least one motion sensor and one limit switch associated with it.

Abstract: A swing-away emergency escape window is provided which automatically swings outwardly from a closed position to an opened position when a latching handle is actuated. A method of converting a conventional window to the emergency escape window is described.

Abstract: Decompression panels of this type are used in separation devices such as wall or floor sections which separate a passenger compartment from a freight compartment in an aircraft. For a decompression without damage to the respective wall or floor section, it is necessary to cover or close an opening in the wall or floor section by a panel secured to a rim of the opening by frangible mounting elements that break away in response to a decompression which may be of the blow-in or blow-out type. In a blow-in situation one panel is removed to form an opening. Two panels interconnected with each other are removed in a blow-out situation. In both instances frangible mounting elements break and permit opening a decompression hole in the separation device. All the frangible mounting elements are of identical construction. The arrangement of the frangible mounting elements on one side or on the opposite side of a panel section permits the panel release in the respective direction.

Abstract: A reversible-screw- (3) and-nut (14) actuating device is connected by a coupling (12, 13) to a sliding door, the screw (3) itself being connected to a motor. A carriage (11) which can move along the screw comprises a lock (16, 22, 28, 24) for locking this carriage automatically when the nut (14) reaches one end of its travel and for unlocking it automatically when the screw is moved in the opposite direction.The lock (16, 22, 28, 24) can move with respect to the nut and is stressed toward a locking position by a helical spring (29) working in the direction of its winding. A manual unlocking means comprises a plate (37) which can move about an axis (40) so as to align the locking finger (22) and its roller (28) with a slide channel (23) counter to the spring (29), this unlocking being possible even when the screw forces in the direction of closing for safety reasons, the unlocking then being validated only when the screw is released.Application to a door of a public transport vehicle.See FIG. 3.

Abstract: An adjustable guard assembly constructed to permit quick removability when positioned in an enclosure, has a first and second section, each section including at least one transverse member, a plurality of longitudinally extending members which are secured at one respective end to an associated one of the transverse member. The two sections are mounted for relative axial movement with respect to each other so as to vary the width of the guard assembly and can be fixed at a given width by a resilient release mechanism which is operatively associated with the first section and the second section. The resilient release mechanism can be adjusted to provide a predetermined force necessary for maintaining the sections in their desired longitudinal position and to permit quick removal of the guard assembly from its assembled position in the enclosure when the predetermined force is overcome by any suitable means exerted against the guard assembly in an emergency situation.

Abstract: The assembly has a multi-tabbed bracket for fixing to a door behind, and parallel with, a latch-actuating rod, and a semi-circular rod guard with latching fingers for slidable engagement with the tabs of the bracket for enclosing and protecting the latch-actuating rod. In addition, the assembly has a shroud-like guard for emplacement over a rod-actuated latch. The shroud-like latch guard has a ramped surface which, when the guard is in place, presents an impingement surface for wheeled devices to facilitate an opening of the door. The shroud-like guard, then, both protects the latch over which it is emplaced and makes the opening of the door more facile.

Abstract: A safety enhanced pivoting door operator is disclosed which includes an apparatus for selective restraint of the swing door to resist movement of the door in a first direction beyond the fully closed position during routine use while yet allowing movement of the door in the first direction beyond the fully closed position when sufficient force is applied to the door in non-routine situations, for example to allow emergency exit or the like. The operator includes a motor and a drive train connected with a rotatable pivot upon which the door is movable. The apparatus includes a mounting member having a deflectable bar connected therewith.

Abstract: A safety door for a furnace or like apparatus is operable to open under the force of a hydraulic cylinder when the pressure under the furnace exceeds a predetermined upper limit corresponding to an abnormally high pressure caused by an explosion within the furnace or like apparatus. The safety door thereby prevents the furnace from being permanently damaged by an explosion.

Abstract: A mounting pad for a lock cylinder provides a plurality of bosses which protrude interior of a door stile, the bosses having inclined threaded bores which hold set screws, the set screws are accessed laterally through an access opening on the side wall of the stile, the set screws are progressed outwardly of the bosses to press against an inside wall of the stile, thus clamping the mounting pad to the door stile. The mounting pad holds a lock cylinder inside an annular lock collar by use of a lock ring. The lock cylinder communicates to mechanical means residing interior of the door stile to effectuate latching of the door with a key. The access opening for insertion of a tool such as an Allan wrench to progress the set screws is located on an interior side wall of the door stile such that when the door is completely assembled, the access opening is covered either by an interior door panel, or other door structures such as a panic exit device or panic bar.

Abstract: A burglar bar assembly for establishing a security barrier across a door or window opening composed of a plurality of horizontal cross bars held in vertically spaced relation by intervening and transversely related vertical members. Certain of the vertical members are fixed rigidly to certain of the cross bars, but slidably joined to others in a manner to provide for extension and retraction adjustment of the barrier to accomodate variations in door or window dimensions. The bar assembly is hingedly connected at one end to a window or door frame to provide for swinging opening and closing operation of the barrier. A safety latch is mounted adjacent one end of the bar assembly and comprises a spring loaded cam member pivotally moveable against spring bias by a remotely operated cable. The cam member serves to capture and lock the unhinged end of the barrier to a rigid locking channel secured to the window or door frame; such channel having spaced angulated slots receptive of the cross bars.

Abstract: An removable frame assembly for building apertures that can be readily pushed out by a user in an emergency situations. It includes a fixed frame rigidly mounted to the aperture and a second frame removably mounted to the fixed frame. The removable frame rigidly houses the window for the aperture and, optionally, security bars to prevent trespassers from entering through the window. The security bars can be installed inside or outside the building. A relatively remotely located locking mechanism releasably keeps the fixed and removable frames together. A spring member sandwiched between the fixed and removable frame members urge the separation of the two when the locking mechanism releases them.

Abstract: An escape door system for a bus is described which can be easily and quickly opened to enable passengers to exit the bus after an accident. The door can be used as a normal exit door or it may be completely detached and separated from the bus. Preferably the door is installed in the rear wall of the bus. A window adjacent the door can also be pivoted out of the way after the door has been separated from the wall to facilitate ingress and egress of people.

Abstract: A window bar security system has a grill of bars positioned outside a building window and held by a plurality of standoffs. Two of the standoffs are latching standoffs and extend from opposite sides of the grill through the wall and into the building and each latching standoffs includes a hole at the distal end. Four other guiding standoffs are inserted into receptacles against coil springs and the four guiding standoffs are positioned in pairs on opposite sides and equi-distant from each latching standoff. A pair of sliding bolt mechanisms are affixed to the inner wall of the building and positioned to permit the sliding bolt of each to fit into one of the latching standoff holes and to be moved towards the center of the window to release the latching standoffs. A pair of security pins are provided with one end designed to fit into a sliding bolt mechanism for preventing the unintentional movement of the sliding bolt and with another end shaped in the form of a hook.

Abstract: A system for providing an emergency exit in a wall of an aircraft includes a pyrotechnic device disposed against the wall, and capable of cutting a desired opening in the wall, an igniter for the pyrotechnic device, a controller for the igniter, and a manometric safety device which receives the pressures inside and outside the aircraft and inhibits the action of the igniter when the difference between the pressures inside and outside the aircraft is greater than a predetermined value.

Abstract: A gate opening and closing apparatus for automatically moving a gate between opened and closed positions and where the gate can be unlatched in order to permit manual opening and closing movement and easily re-latched for automatic movement thereof. The apparatus comprises a powered drive unit. The gate is moveable and, preferably rotatable about a vertical hinge axis, between a pair of opposite end positions. A drive arm forms part of the opening and closing apparatus and is driven in an arcuate path between a pair of end positions which represent a gate open position and a gate closed position. A coupling arm is normally engaged with the drive arm and may be moveable therewith between the opposite end positions represented by movement of the drive arm. A latching arm is provided for latching the coupling arm to the drive arm. A connecting mechanism connects the coupling arm to the gate to translate the movement from the drive arm and the coupling arm to the gate.