Abstract: A louver type blast valve making use of an aerodynamically configured blade, independently activated by air flow to block a blast shock wave and a subsequent return suction wave. The blast valve (FIG. 6) including a frame and at least one aerodynamically configured blade, independently activated by air flow to block a blast shock and a potentially following return wave. The aerodynamically configured blade having an elongated shape, including at least a steep convex surface and a flat or shallow concave surface, forming a leading edge and a trailing edge at the intersection of the surfaces. The blade being hinged to the frame about a longitudinal axis passing between the steep convex surface and the flat or shallow concave surface.

Abstract: A sluiceway device for a hopper barge has an elongate main body defining a discharge channel. The elongate main body has a plurality of openings. The elongate main body may be configured to be disposed atop a hull of the hopper barge and configured to receive dredging material placed in the hopper barge. The sluiceway device may also have a discharge pump. The discharge pump may be in communication with the discharge channel. The discharge pump may be further configured to pump the dredging material from the discharge channel to a disposal area outside of the hopper barge.

Abstract: A window, with a hybrid sash counterbalance and assist mechanism, includes a frame having upper and lower sashes slidable within the frame. A sash coupling element extends between the upper and lower sashes. The hybrid sash counterbalance and assist mechanism is coupled with the sash coupling element. The window with the hybrid sash counterbalance and assist mechanism is operable in a sash counterbalance mode and in an independent sash movement mode. In the sash counterbalance mode, movement of the upper or lower sash causes converse movement of the lower or upper sash through the sash coupling element, and the movement of the upper or lower sash is assisted. In the independent sash movement mode, one of the upper and lower sashes is held static while the other of the lower or upper sashes is moved, and the moved sash is assisted.

Abstract: An apparatus includes a display structure that supports products in a display area within reach of a customer location. The apparatus further includes a panel structure supported for movement along upper and lower tracks. The panel structure has a transparent viewing section and indicia relating to the products, but is not configured to support any products itself. The panel structure also has horizontally opposite side edges spaced apart at a width that is less than the width of the display area. A frame structure supports the upper and lower tracks at locations that provide the panel structure with a path of movement interposed between the customer location and the display area. The path of movement includes positions in which the display area can be reached from the customer location past either of the opposite side edges of the panel structure.

Abstract: Gateway for providing controlled access from an entrance point to an exit point, having two wall elements defining a corridor in between the wall elements, and having a movable close off element or elements that have an open position and a closed position, whereby in the open position the corridor between the entrance point and the exit point provides a free passageway, and whereby in the closed position the corridor is closed off and passage from the entrance point to the exit point is prevented, wherein the movable close off elements or elements is/are embodied as at least one flexible band movable from within a wall element to at least in part outside that wall element, whereby in the open position the flexible band(s) is/are substantially rectilinear and positioned inside the wall element, and whereby in the closed position the flexible band(s) is/are bent to extend at least in part outside the wall element towards the other wall element to close up the passageway.

Abstract: A method and apparatus that controls access to a secured area using an automated gate controlled secured environment is disclosed. The method may include receiving an indication that an individual attempting to pass through a clearance area has not been authorized to pass through the clearance area, automatically moving one or more gates to create a channel for the non-authorized individual to be directed to a manual screening area, determining if the non-authorized individual has passed one or more sensor; wherein if the non-authorized individual has been determined to have passed the one or more sensor, then moving a gate located behind the non-authorized individual to enable other authorized individuals to pass through the clearance area while maintaining the channel created to the manual screening area, and preventing the non-authorized individual from gaining access to the automated gate controlled secured environment once the non-authorized individual reaches the manual screening area.

Abstract: A gate assembly comprising an enclosure, the enclosure being accessible by a first gate and a second gate, and gate operating means, wherein unlatching of the first gate causes the second gate to remain latched, and the second gate cannot be unlatched until the first gate is latched.

Abstract: The walls in the Unity Platform System are installed all along the platform to match the position of the train doors; on the other hand for different model trains, two new systems which are installed completely free from the train doors have been proposed in the file. The doors with roller bearings move on the seating sledge in the walls. All the doors are attached to one close circle rope, which moves over a pulley set. One drive group activates this rope. The drive group consists of one variable speed reversible motor; one brake and one drive sheave. The rope is pulled to the right or left by the drive sheave. All the doors open or close at the same time, being attached to the same rope. Besides, to bridge the gap between the platform edge and the train, three different Gap Devices have been proposed in the file.

Abstract: A vehicle includes a body and a door closure system. The closure system includes a first door pivotably connected with respect to the vehicle body for selective movement between open and closed positions. A second door is movably connected with respect to the vehicle body. In a first configuration, the first door is in the closed position such that the first door obstructs a first portion of a body opening and the second door is in a first position such that the second door obstructs a second portion of the body opening. In a second configuration, the first door is in the closed position and the second door is in a second position such that at least a portion of the second door inner surface opposes the first door outer surface.

Abstract: A cabinet includes at least two doors located on opposite sides of the cabinet. The cabinet includes an interlocking means comprising a pair of release mechanisms, locking mechanisms, and latching mechanism. The latching mechanism functions to retain the doors in the closed position unless activated by an operator, allowing the doors to be opened. The locking mechanism prevents the latching mechanism from being activated when the opposing door is open. The release mechanism communicates the position of the door to the locking mechanism associated with the other door.

Abstract: The invention relates to a bracket adapted to form the connection between a conventional ¼-½ horsepower garage door opener to a pair of conventional side-by-side garage doors. Garage doors in accordance with this invention consist of hingedly connected segments having rollers and a pair of roller tracks on which the rollers and thus the door segments slide. My bracket has a flange connected to each door, legs and a base portion adapted to span the tracks of adjacent garage doors and a central portion spanning the distance between adjacent garage doors and connected to the movable carriage of a conventional garage door opener in order to permit a single door opener to operate both doors simultaneously. Brackets in accordance with this invention may have a W-shape and be constructed from a series of smaller sections.

Abstract: A smoke release and ventilation system comprises a frame housing upper and lower members each slidable in the frame between a normally closed position and an open position, the upper member being retained in its upper position by retaining element, for example an electromagnetic, the upper member being heavier than the lower member whereby, on release of the retaining, the upper member falls under gravity to its open position, and, consequential upon said fall of the upper member and the kinetic energy thereof, the lower member is raised to its open position, thereby providing gaps above and below the members and through which smoke can escape.

Abstract: The assembly includes a pair of parallel guide rails, each shaped generally as an inverted U; a first gate segment having at least one pair of rollers positioned on opposite lateral sides thereof, where each roller is received within a respective one of the guide rails so that the first gate segment is guided by the pair of guide rails; a second gate segment having at least one pair of rollers positioned on opposite lateral sides thereof, where each roller is received within a respective one of the guide rails so that the second gate segment is guided by the pair of guide rails; and at least one substantially rigid cross-bar pivotally connected between the first and second gate segments.

Abstract: A motor-vehicle gate assembly for a driveway includes, in addition to the gate and an actuator for opening and closing the gate, a secondary barrier operable in response to operation of the gate to prevent motor-vehicle access to the gate when the latter is closed and to permit access to the gate when the latter is open. The barrier may be a flexible line which extends across the driveway and which is movable between a raised position above the driveway and a lowered position in a gutter in the surface of the driveway. Movement of the barrier between its raised and lower positions can be effected by a mechanical connection between the barrier and the gate.

Abstract: A fire door system comprising first and second fire door assemblies each assembly including a fire door, a temperature sensing device and an operator. The operators of each of the assemblies are electrically interconnected such that when the fire doors simultaneously close when either (a) the temperature sensing device senses that the ambient temperature exceeds a predetermined value or (b) the circuit between the operators of the assemblies is deactivated.

Abstract: For a laboratory fume hood where two sashes are provided and the total open area through the sashes must be regulated, a counterweight system having a dedicated counterweight for each sash and having the respective counterweights connected together by a cross cable draped over pulleys arranged above each respective counterweight. The cross cable has a preselected length to have a selected length of slackness which is equivalent to the total aggregate regulated travel of either or both sashes. Thus, one sash can be opened 100% or two sashes can be opened 50%.

Abstract: An improved telephone building entrance terminal for use with subscriber-owned equipment. The terminal includes a partition housing including a splice chamber for reception of incoming cable pairs and a second chamber accommodating protector modules and a connector block. Separate covers are hingedly mounted to overlie the splice chamber and the protector and connector chambers. The covers are so arranged that movement of one cover to closed position serves to provide locking means for the other cover whereby only a single padlock is required to prevent unauthorized access to the interior of the housing.

Abstract: A window assembly for controlling light and ventilation and preventing undesired passage through the window opening has spaced horizontal fixed slats, spaced horizontal movable slats which may be moved vertically to partially or wholly close the spaces between the fixed slats, and vertically spaced tool steel bars extending across the window opening and anchored at their ends in the building structure in which the window assembly is mounted.

Abstract: An air vent having a detachable front plate provided with apertures, a closure plate behind the front plate, an operating device for moving the closure plate toward and away from the front plate for blocking and unblocking and apertures, the operating device being connected to the closure plate by means of a slot and pin connection which allows the closure plate to be removed independently of the operating means.

Abstract: A garage door structure includes a pair of doors each movable between a closed position and an open position for the side-by-side door openings. The garage door structure includes components for moving the doors together as a unit between the open position and the closed position. The doors are tied together as a unit by an upper tie member and a lower tie member each extending between and having opposite end portions thereof each connected to a side edge portion of a respective one of the doors. A remote controlled power device or operator is operatively connected to the upper tie member for selectively and simultaneously moving the doors between the open position and the closed position.