Abstract: A device for securing a passageway comprising a barrier on a mounting member, the barrier being retained by magnetic attraction between the mounting member and the barrier, the mounting member being pivotably moveable between operative and inoperative positions.

Abstract: Described herein is a hinge and latch system that can be employed as a hinge, a latch, or both a hinge and a latch.

Abstract: The present invention provides a mechanism for mounting a door comprising a dual-hinge or “double-knuckle” spine/hinge system which allows a traffic door to open a full 180 degrees in both directions from a closed position. The mechanism allows the door to be flush with a wall that is adjacent to the door resulting in minimal obstruction of hallways and/or other traffic areas into which the door opens, thereby significantly increasing the efficient use of limited space. The present invention also provides a mechanism for cushioning a door against sudden impacts and reducing the stresses from loads that are commonly placed on the door and jamb due to frequent opening and closing.

Abstract: A retrofit conversion kit for converting a door operating apparatus from overhead use to underground use and for operating a swinging door while protecting the door apparatus against moisture and dust encroachment within its underground location. A seal arrangement provides this contamination encroachment protection.

Abstract: A retrofit conversion kit for facilitating the conversion of a door operating apparatus conventionally mounted above the door, to a position mounted and anchored underground for operating a swinging door therefrom. The conversion to an anchored underground position is facilitated by incorporating positional adjustment mechanisms covering any or all possible adjustment dimensions.

Abstract: A shutter includes a shutter frame defining an open space, a shutter panel mounted within the open space of the shutter frame, a mounting device and a packing plate. The shutter panel has an open panel frame and a plurality of louvers pivotally mounted inside the open panel frame. The mounting devices is connected between an outer side edge of the shutter panel and an inner side edge of the shutter frame for enabling the shutter panel to be turned in and out of the open space of the shutter frame. The packing plate is mounted in between the mounting device and the shutter frame.

Abstract: A barrier assembly for protecting an edge of a loading platform includes: a gate reciprocating between a barrier position approximate an edge of a loading platform and an open position away from the edge of the loading platform, and a toe barrier mounted approximate the edge of the loading platform and operatively coupled to the primary gate to reciprocate between a barrier position and an open position. The toe barrier provides a vertical barrier along a floor of the loading platform approximate the edge of the loading platform in its barrier position, and is operative to reciprocate to its barrier position when the primary gate is in its barrier position and to reciprocate to its open position when the primary gate is in its open position.

Abstract: A safety device is provided at a rotary printing machines. The printing machine includes printing units which comprise at least two printing mechanisms disposed one above the other. The upper printing mechanism is accessible from a pivotable work platform which can be reached via a ladder disposed laterally at the printing units. The improvement lies in a pivotable safety arm which yields obliquely upwardly in response to a contact force applied from below.

Abstract: A moveable highway barrier includes a hinged shell and a stationary barrier section. The stationary barrier section contains a mechanism for raising the hinged shell between a standard position (also known as the lowered or closed position) and an open position (also known as the raised position). When the hinged shell is in the open position, vehicles, such as emergency vehicles, can traverse through the opening. The hinged shell can overlap a neighboring fixed barrier to provide lateral support. Additional support can be achieved through the use of a gravity or spring-loaded pin engaging with a hole in the ground. The system is signalled by a remote control.

Abstract: A motorized vertical lift gate whose operating mechanism is very compact, simple, and concealed inside a hollow gate post. Said gate comprises a plurality of horizontal rails arranged in a parallel fashion connected by vertical members and pivotally mounted at one end of the upper most rail to a gate post about which the gate pivots open to a true vertical position. The operating mechanism is activated by various ways, including remote control, vehicle detection, keyless entry, and manual switches.

Abstract: Tension produced force is applied to a pivotally mounted gate to cause the gate to reside in a generally horizontal spring balanced position to close the gate, and/or tension produced force is applied to the gate to cause the gate to reside in a generally vertical spring balanced position to open the gate.

Abstract: Apparatus for controlled raising and lowering of a barrier about a pivot point in which optimum control forces are applied to the barrier throughout its range of operation, and in which sensors are provided to prevent movement of the barrier against a resistive force to thereby prevent damage to the barrier, its operative mechanism, or an external object in its path.

Abstract: A security gate system including a supporting structure and a gate mounted on the supporting structure for pivotal movement about a generally horizontal pivot axis between a closed position and an open position. A drive wheel is rotatably mounted on the supporting structure and is drivingly coupled to the gate so that rotation of the drive wheel in a gate opening direction drives the gate from the closed position to the open position. A first motor drives the drive wheel and a releasable lock releasably holds the drive wheel against rotation in the gate opening direction. A second motor moves a locking member of the releasable lock to a releasing position to allow the gate to be moved to the open position. The gate system may include two of the gates having operators sharing the same supporting structure.

Abstract: A gate assembly for a vertically pivoting gate includes a support and coil springs connected between the gate and the support to bias the gate toward a vertical, open position, as well as from the open position back to a horizontal, closed position. The springs are attached to the support, and cables extend from the springs to the gate. Sheaves mounted on the support engage the cables to induce the return bias in the springs to move the gate back to the closed position. The mounting for the sheaves includes a member engaging the gate to support the gate in a precisely vertical orientation when the gate is in the open position.

Abstract: Folding-arm bearing for an oscillating-swinging leaf of doors, windows or the like, comprises a support inserted on the sash-frame and a square-shaped blade having a wing onto which is pivotally mounted a plate bearing a folding-arm leg by a connector. In order to facilitate the reversibility of this folding-arm bearing without disassembling of components, the wing of the blade is provided, on its upper and lower edges, with a pin engaging into an opening made in the connector, and the plate is mounted onto this wing by means of an eccentric having a rotation which generates a vertical movement of the plate causing the disengagement of a pin from the opening present in the connector.

Abstract: A semi-automatic gate may be opened from a vehicle by pulling on a line attached to a counterbalance control mechanism. The counterbalance control mechanism comprises a cylinder having a damper-controlled flow of water arrangement which allows an enclosed quantity of water to shift when the gate is opened and to then slowly return past the damper to effect a subsequent gate closing. Water is also used within the gate support structure to provide an additional shifting of weight when the gate is opened or closed.

Abstract: A gate assembly for a motor driven vertically pivoting gate includes a support frame and coil springs attached between the gate and the support frame to bias the gate toward a vertical, open position and thereby assist the drive motor. A member secured to the support frame deflects the springs when the gate is in the open position, thereby placing the springs in tension so that the springs also assist the drive motor in starting the gate to move from its open position toward its closed position. The member also engages the gate when it is in its open position and supports the gate in a precisely vertical orientation.

Abstract: An automotive door structure includes a door panel assembly of resin, a lifting/lowering device for lifting and lowering a door glass sheet, the lifting/lowering device being disposed in the door panel assembly, and a door frame of a rigid material disposed in the door panel assembly and supporting the door glass sheet and the lifting/lowering device.

Abstract: A doorway system, comprising a novel mechanism for controlling tall glass doors and making their installation and repair much easier, and a header that can be used with standard size or tall glass doors, is disclosed. The mechanism features circular bearings, a specially-designed bottom spindle and an upper, adjustable, pivotable housing. The header houses, among other parts, the adjustable housing and allows pre-cut, modular parts to be assembled at the building site.

Abstract: A counterbalancing assembly for use with a gate vertically rotatable about an axle carried by a support structure. The counterbalancing assembly utilizes a coil spring having one end attached to the support structure and having its other end attached to one end of a cable. The other end of the cable is attached to the gate at a point spaced apart from the axle. This cable, intermediate its ends, is trained around a pulley. The pulley is positioned so that as the gate is lifted, the spring provides a resilient force assisting in the opening of the gate and, as the center of gravity of the gate crosses over the axle and the gate starts to fall on the other side of the axle, the spring provides a force counteracting this falling movement. With this arrangement, the coil spring also assists in closing the gate from the open position.

Abstract: A vertically rotatable gate which incorporates a torsion beam strengthened by bracing stringers to form a compact, rigid foundation structure along the bottom of the gate for resisting torsional and transverse forces acting on the gate. Further, a separate carriage assembly may be used to mount gates of different sizes to a gate axle.

Abstract: A vehicle door or body section, especially for a passenger motor vehicle with a door body or body section made essentially of an outer and of an inner body panel and with a window arranged above the same which essentially consists of an approximately rectangularly shaped vertically displaceable side window and an adjoining approximately triangularly shaped window part, whereby for purposes of opening the window the side window and the window part can be lowered completely into the door body or body section in that the window part is pivotal within the area of its corner opposite the side window about an axis arranged approximately perpendicularly to its window plane; the side window and window part extend thereby in a common plane and the side window is provided within the area of its upper corner facing the window part with an inclination in such a manner that in the lowered condition of the side window and of the window part, the front edge of the window part extends adjacent the inclination at a distance w

Abstract: A gate operator for lifting a gate about a horizontal pivot at a lower proximate corner thereof about a 90.degree. arc in the plane of the gate and having spring means for balancing and holding the gate weightless in all positions of its arcuate movement, permitting the gate to be moved between fully opened and closed positions manually or with minimum applied force, and preferrably comprising crank-like means operating through a raceway on the face of a driving wheel, the gate operator having a position locking the gate in its closed position against vertical forces exerted at the gate for opening same; and a safety snubber controlling the speed of the gate in either opening or closing movement.

Abstract: A combat vehicle, especially an armored vehicle, with a rotating turret on a hull and with an entry-and-exit hatch that can be closed with a cover and that is mounted in the roof of the hull. The parts of the roof of the hull in the vicinity of the hatch consist of a circular plate that rotates on an axis perpendicular to the roof and in which the hatch is positioned in the plate eccentric to its axis of rotation. To make the hatch as small as possible, while permitting exit from the vehicle at all turret positions, the position of the hatch can be varied.

Abstract: An improved gate assembly for a guard-railing around a mezzanine storage area comprised of a U-shaped gate member mounted on a horizontal axis and pivotally movable between a first position wherein a barrier portion of the gate member traverses an opening in the guard railing and a second position wherein the barrier portion is removed from the opening.

Abstract: A pivoting gate (10) is disclosed which has a rectangular gate frame (11) which is rotated about a horizontal axis by a gate operator (12) from a horizontal closed position to a vertical open position. The torque about the pivot axis is counterbalanced by an opening tension spring (28) when the center of gravity of the gate frame (11) is over the closed position of the gate, and is counterbalanced by one or more closing tension springs (22) when the center of gravity is past the pivot axis and is over the open position of the gate. The closing tension springs (22) are connected to the gate frame at one end and are so attached to the gate operator at their other ends that they will slide freely while the gate is opening but will be held to stretch and apply a counterbalancing torque to the gate frame when its center of gravity is past the pivot axis.

Abstract: The invention is a safety bar for use in the cab of large earth moving equipment and which extends across the entryway of the cab. The safety bar is pivotally connected to the floor and has vertical freedom of rotation across the entryway. When in place across the entryway, the safety bar has a horizontal member connected to a vertical support member. The vertical member is attached to a hinge base plate adapted to allow vertical freedom of rotation. A latch is provided on the horizontal member to secure the horizontal member to a latch bar to block the entryway.

Abstract: A gate assembly including a support structure, a gate carried by the support structure and movable with respect thereto, a gate control and a gate activator associated with the gate, the support structure including a plurality of frame members, the gate having one end thereof disposed adjacent to the support structure and extending outwardly therefrom, a pivot connecting a lower part of the gate to an adjacent lower portion of the support structure, the pivot including a rotatable shaft and shaft carrier, the gate control including a biasing mechanism associated with the gate, the gate activator including a power source mounted on the support structure, drive mechanism operatively connected to the power source, the drive mechanism including translating mechanism activatable by the power source, the translating mechanism being disposed for movement in a substantially horizontal plane, an arm member having one end pivotally connected to the translating mechanism, the arm member having its opposite end pivotally

Abstract: A gate assembly for a milking parlor including a pivotal barrier mounted on a horizontal axis and operating levers to move gate between opened and closed positions, the levers include a bell crank providing an over center locking action.

Abstract: A gate assembly including a support structure, a gate carried by the support structure and movable with respect thereto, and a gate control associated with the gate, the support structure including a plurality of frame members, the gate having one end thereof disposed adjacent to the support structure and extending outwardly therefrom, a pivot connecting a lower part of the gate to an adjacent lower portion of the support structure, a pivot including a rotatable shaft and shaft carrier, the gate control including at least one coil spring member, one end of the spring member being attached to an upper part of the gate adjacent to the support structure and the opposite end of the spring member being affixed to the support structure at a point spaced from the pivot, a fulcrum disposed adjacent the end of the spring member affixed to the support structure, the fulcrum being disposed on the side of the spring member remote from the pivot, the fulcrum including an arcuate spring-engaging section disposed in substan

Abstract: A material unloader for forage or the like includes a closed box-type body having interior unloading mechanism for delivering material to an exterior chute and has at least one, and preferably two, latchable closures for providing access to the body interior. The unloading mechanism is designed for connection to a source of power exteriorly of the body and locking apparatus on the closures is arranged for purposes of safety so that the unloading mechanism must be rendered inoperable to effect the opening of any closure and cannot be made operable while any closure is open and affording access to such mechanism. This unloader may be mounted on a wheeled chassis for towing or mounted on a self-propelled vehicle.

Abstract: A window, especially for an automobile body, which consists of two sliding glass sections pivoting about a common superior axis in such manner as to constitute a total glass surface, somewhere between a quarter circle and a semi-circle in form, limited above by the straight sides of the body. The sections are operated by means of a locking catch or by means of a toothed gear control mechanism.

Abstract: A rotatable gate floor entrance has one or two gates which are pivotably attached at a lower corner to a post structure connected to a floor. The gate or gates rotate in a vertical plane from an open to a closed position. When a single gate is used, a gate lock connects the gate to a second vertical post. When two gates are used, the first gate is rotatably connected at a lower corner to a first post support and the second gate is attached in similar fashion to a second vertical post. Both the first and second gates rotate in a vertical plane and, when placed in a closed position, have side edges which abut one another. The two gates are locked in this position by upper and lower channel members mounted to the gates.