Abstract: The present invention provides a door restrictor apparatus for locking and preventing a sliding door on an elevator car from unauthorized opening. The door restrictor apparatus includes a locking lug mounted on the elevator car, an actuating mechanism having an actuating surface that moves toward and away from a surface on the car door, and a pivotable hook, having an axis of rotation perpendicular to the direction of the door movement is mounted on the door. The hook has a beak end that alternatively passes by or engages the locking lug. The movement of the actuating surface is coupled to the rotation of the pivotable hook by a crank and push rod assembly so that the motion of the actuating surface toward or away from the surface of the car door causes the hook to rotate and vice-versa. A means for biasing the restrictor apparatus is provided to urge the actuating surface to move away from the surface of the door and to urge the pivotable hook to rotate in a first direction.

Abstract: Door system with a locking device which has top and bottom locking elements which can be displaced by a drive unit to realize a door system which is simple and easy to install, whereby the functional and operational reliability of the system are increased. For this purpose, associated with each of the top and bottom locking elements is an actuator element whereby the actuator elements are fastened to a single slide which is held on a beam so that it can move perpendicular to the sliding direction of the leaf and which can be moved indirectly by the drive unit.

Abstract: A door coupler (4) comprising gripping elements (14,15) moved by a linkage (2) and designed to grip a counterpart (17,18) on the landing door, and a lock catch (10) which has a closed position and an open position. The releasing movement of the lock catch (10) from the closed position into the open position is allowed when a gripping element is pressed against a counterpart.

Abstract: In the procedure for closing an elevator landing door (3,4), the landing door is coupled with the car door (1,2) by a door coupler, and the car door is moved by an actuator provided in conjunction with the elevator car. During the initial phase of the closing movement, the car door and landing door are moved at the same speed, but towards the end of the closing movement the landing door (3,4) is caused to move faster than the car door (1,2). Based on control by the car door movement, the coupling elements (5,6) of the door coupler are moved in the direction of the car door movement.

Abstract: A panel assembly comprises first and second bi-parting panel groups. Each group has at least a first and a second panel movable between a retracted and an extended position for opening and closing the panel assembly. The second panel in each group travels farther than and across the first panel in each group when the panels move between their retracted and extended positions.

Abstract: A display panel advertising system includes two halves, each adapted to be placed on one side of a two-panel elevator access door. As the door panels slide together and the elevator door closes, the two display panels begin to form a picture which is not completed until the door is fully closed. The picture or scene develops as it advances from a hidden view when the door is fully open and as the two halves approach one another. This creates an attention getting device wherein the passengers in the elevator are captive and actually have a place to focus their attention rather than on the ceiling or floor number panel. The display panel advertising system is an effective means of attracting attention and promoting products and services to selected consumers.

Abstract: An operating system placed on the cabin door is shown with a continuous line in rest position and with a dotted line in working position. An arrow marked with a (Y) indicates a horizontal movement undertaken by the operating system in the Y-direction and an arrow marked by (X) indicates a horizontal movement undertaken by the operating system in the X-direction. The X/Y movement of the operating system is produced by an actuator and motive mechanics. On a shaft door is placed an operating cam upon which the operating system rests. Operating system sensors measure the distance to the shaft door and the operating cam. An electromagnet of the operating system produces the necessary force for coupling of cabin door to shaft door.

Abstract: An elevator door operator for positioning elevator doors along an arcuate pathway includes a linearly displaceable actuator and a pair of linkage arms, each pivotally connected to the other and connected to one end of the linearally displaceable actuator. The linkage arms are also each pivotally connected at their opposite ends to each of two support arms, each of which support arms are pivotally connected at one of their ends to each other and secured at their opposite ends, respectively to each of the door panels.

Abstract: In the procedure for closing an elevator landing door (3,4), the landing door is coupled with the car door (1,2) by a door coupler, and the car door is moved by an actuator provided in conjunction with the elevator car. During the initial phase of the closing movement, the car door and landing door are moved at the same speed, but towards the end of the closing movement the landing door (3,4) is caused to move faster than the car door (1,2). Based on control by the car door movement, the coupling elements (5,6) of the door coupler are moved in the direction of the car door movement.

Abstract: A door coupling apparatus for establishing and releasing an operative connection between an elevator car door and an elevator shaft door includes a drive unit (D, P) mounted on the car door for moving a roller double lever (1) into engagement with an entraining element (21) on the shaft door. A thrust/rotation drive unit (D) has a rotary drive (9) coupled to a lever axle (3) of the roller double lever (1) by an entraining disc (8), a coupling pin (7) and a coupling ring (6) to axially displace the roller double lever, and a guide pin (11) extending from the lever axle to engage a curved guide slot (10) to rotate the roller double lever. A passive drive unit (P) has an actuating cam (32) with a guide slot (36) formed therein for engaging an actuating roller (37) attached to the coupling pin (7) to produce the rotation and extension of the roller double lever (1). The rotatable and, in particular, retractable roller double lever (1) and the arrangement thereof above the door leaves (16.1, 16.

Abstract: The invention relates to a multifunction connection and support element for an elevator door structure. The element includes, for each lateral jamb, a connection and support bracket that connects and unites each jamb with an architrave and also to an anchor bracket to be fixed to an elevator shaft wall. The anchor bracket also functions as a guide for sliding carriages of a door motion mechanism. The connection and support bracket performs all functions that in the past were carried out by several distinct connection and support elements.

Abstract: A multiple level building comprising an elevator system in which an elevator car moves between floors within an elevator hoistway which contains a door providing access to the hoistway from a corridor at each floor. Seal structures are provided between the hoistway door and a hoistway wall structure to substantially prevent smoke and gas from passing into or out of the hoistway, and to block water from entering the hoistway. A transverse seal structure has a wall-mounted portion with an angled seal engagement surface relative to the hoistway wall, and a door portion with an angled seal mating surface facing toward the hoistway wall and spaced apart from the seal engaging surface of the wall-mounted portion. A seal is provided between the seal engagement surface and the seal mating surface to seal the transverse space therebetween to prevent smoke and gas to pass therethrough in the event of a fire when the hoistway doors are in the closed position.

Abstract: A door sill arrangement for an elevator has a profiled sill element with upper and lower grooves. First and second door panels of the elevator are provided with first and second sliding guides, respectively. The first and second sliding guides move in the upper and lower grooves of the profiled sill element when the doors are opened. Upper and lower plastic bars are attached to the first and second sliding guides, respectively. The upper and lower plastic bars are pulled by the front sliding guides, when the door panels are opened. The upper and lower plastic bars slide along through the upper and lower grooves and substantially fill or cover the grooves which would otherwise be exposed when the door panels are opened.

Abstract: An elevator door hold-close device in combination with a moving vane elevator door coupler having first and second vanes pivotally connected by links to form a parallelogram pivotally movable between a first compressed uncoupled position and an expanded coupled position. A structural member is fixed to the elevator car and has a friction pad configured for retentive engagement with a friction pad on the vane assembly to hold the car door closed against manual operation when the elevator car is in flight.

Abstract: An elevator door safety system includes hoistway side doors (2), (3) which open on both sides installed in the side of the hoistway in such a way that they can freely open and close, car side doors (5), (6) which open on both sides installed in the side of the car in such a way that they can freely open and close, a light-emitting element (10) and a light-receiving element (11) respectively provided on either door in the car side, and a pair of reflection members (12), (13) provided on either door in the hoistway side. The reflection members are arranged and dimensioned such that the light from the light-emitting element (10) is emitted toward one of the reflection members (12), which light is reflected from one of the reflection members (12) to the other reflection member (13), and from the other reflection member (13) toward the light-receiving element (11).

Abstract: The invention concerns a door structure for an elevator which allows a service engineer to easily adjust a gap between a vibration damping engaging mechanism on a cage sliding door, the width of which varies through the opening/closing operation of the cage sliding door, and each of vibration damping members spaced predetermined distances apart from both sides of the vibration damping engaging mechanism. In the door structure, the vibration damping engaging mechanism includes movable engaging vanes spaced predetermined distances apart from the vibration damping members. The movable engaging vanes are operated such that when the sliding door is present near to the full close and open positions, the spaces are larger than those when the sliding door is present in the middle of the opening/closing stroke of the sliding door.

Abstract: A coupling for causing an elevator car door to engage an elevator hoistway door includes a pair of vanes, each end of each vane pivoted on a link connecting it with the other vane, the links being disposed for rotation between said two vanes on an elevator car door thereby forming a parallelogram. The vanes extend vertically between four rollers which rotate about horizontal axles disposed at the top of the hoistway door, and which provide rotationally stiff coupling. A solenoid actuator can move one vane up to cause the parallelogram to shrink, into an uncoupled position. When the actuator is disenergized, a spring causes the parallelogram to spread so that the vanes are wedged between the rollers and the two doors are coupled together.

Abstract: A horizontally stiff, but vertically yielding coupling between an elevator car door and an elevator hoistway door includes a brushless torque actuator which rotates a member (disposed on the elevator door) between a first, clearance position and a second, coupling position where it becomes wedged between the walls of a channel disposed on a hoistway door. The member may have rollers to make contact with the walls of the channel, or it may simply have sliding surfaces for contact with the channel.

Abstract: An elevator hoistway door is coupled to an elevator car door so as to be opened and closed in unison therewith by means of a pair of shoes which are mounted on the elevator door and have cammed surfaces that allow the shoes to be spread so as to be wedged within the walls of a channel that is mounted on the hoistway door. The wedging action is caused by a solenoid actuator and the shoes are returned by means of a spring to a rest position in which they have adequate clearance within channels of all of the hoistway doors which the elevator may pass. Advance door opening and releveling is accommodated by means of rollers or sliding contact.

Abstract: A hoistway and a car door are coupled by means of a vane attached to one of the hoistway door and the car door, and a mating channel mounted to the other of the hoistway or car door. A mechanism allows the channel to extend from its mounting towards the vane if the car is in preparing to load or unload passengers. The vane enters the channel to couple the car and hoistway doors for motion together. If the car is in motion the mechanism causes the channel to move towards its mounting and away from the vane so that each channel does not interfere with any vanes on any floor that is passed while in the car is in motion. The channel allows the vane attached thereto, to slightly ascend and descend while still coupled to the channel. The mounting has a spring that bends to move the channel away from the vane and unbends to move the channel towards the vane. The channel releases a lock attached to a hoistway door as the channel moves away from its mounting to allow the hoistway door to open as the car doors open.

Abstract: A door lock mechanism for a sliding door is provided comprising a pivotly mounted first lock member, a second lock member, and a mechanism for selectively engaging the first lock member. The mechanism for selectively engaging the first lock member may be operated to pivot the first lock member away from the second lock member, thereby uncoupling the lock members and permitting the sliding door to be opened.

Abstract: A fire lintel for a freight elevator pass door that provides a fire stop in the gap between the door opening header and the upper panel of the pass door and that is displaceable for passage of the door above into the gap when the door above opens. Two embodiments of the fire lintel are characterized by overlapping baffle-like elements that afford a high resistance to the passage of gases into the hoistway in the event of a fire.

Abstract: A linear motor is used to actuate an elevator door in response to a control signal for counteracting rotational torque caused by a variable-length moment arm about the center of gravity of the door by varying the magnitude of a linear force exerted on the door acting through a fixed-length moment arm about the center of gravity of the door for providing an opposing rotational torque, thereby counteracting the rotational torque caused by the normal force. The first and second rotational torques may be controlled to decrease and increase linearly as the door goes through its motion. In this way, the velocity profile varies in a curve similar to one side of the major axis of an ellipse. The normal force may be provided so as to levitate the door to reduce gravitational forces acting on door rollers. The control may be carried out in an open- or closed-loop fashion.

Abstract: The entrance to an elevator cab is provided with wedge gaskets both above and below the cab door opening. The upper gasket is mounted on the door opening header, and the lower gasket is mounted in the door sill. Gasket-engaging brackets are mounted on the top and bottom of each door to snugly engage the gaskets when the cab doors are closed. The closed cab is substantially sealed against penetration by hoistway air so as to provide a quieter smoother ride, especially at high operating speeds. The seal is not established until the doors are completely closed.

Abstract: A fireproof shaft door for an elevator installation has an improved heat insulation towards the shaft side in the case of a fire at the floor side of the door. A door is filled with heat insulating spaces and heat insulating mat and is positioned at the floor side of a framework which is carried by a door suspension. The framework is horizontally displaceable on a roller and is guided at a lower edge by a sliding guide engaging a recess in a threshold. Horizontal spars, which are provided with ventilation apertures, are attached to the door box at the shaft side. Heat insulating plates are attached to the spares to cover the shaft side of the framework. A first hollow space is formed between the door box and the heat insulating plates and functions as natural chimney in which fresh air circulates. A vertically extending recess is formed in a closing edge of the door box to form a second hollow space in which fresh air circulates when the door is closed.

Abstract: The device is applicable to elevator telescopic two-speed doors, using either two panels with opening towards one side or else using four panels with opening in the center. The rolling device comprises linear ball bearings mounted on a single circular track which together provide a sliding apparatus for the doors. The rolling device further comprises a case for enclosing the sliding apparatus to minimize the intrusion of foreign objects such as dirt and dust.

Abstract: An apparatus operable on each elevator platform for opening or closing doors wherein the apparatus includes a pair of doors for opening or closing an inlet/outlet on the elevator platform, a rail for guiding the rolling movement of rollers carried by a hanger plate standing upright on the upper surface of each door and a door-sill arranged below said inlet/outlet for guiding the slidable movement of a door shoe at the lower end of each door. Each door is essentially composed of a door main body having a vertically extending reinforcement member for supporting the dead weight of each door and a thermal insulating panel fixedly secured to the door main body on the elevator platform side, the thermally insulating panel being filled with a thermal insulating material, and a decorative plate is adhesively secured to the front surface of the thermal insulating panel on the elevator platform side.

Abstract: The device is applicable to elevator telescopic two-speed doors, using either two panels with opening towards one side or else using four panels with opening in the center, the rolling device being foreseen to be mounted on a single track as a sliding guide. The rolling device includes a case which encloses rollers and counter rollers which roll along the track. The case is formed from two parts connected together and to a bracket on the door by a pair of fasteners. The fasteners form the axles of the rollers. The track can be circular in section and the rollers can be linear ball bearings.

Abstract: The improvments are applicable to elevator doors and even to doors of vehicles, either made out of two leaves which move in the same direction for the opening and closing thereof, or made out of four leaves each pair of the four leaves opening in the center. The improvements are centered on the use of a single track for both leaves or door panels, a track which may have a rectangular or circular section, located in a box with rolling or movement components which are fastened to the corresponding hanger support of the panel or door. Another improvement consists of the two panels of the door being exactly the same, each one of them including a sound absorbing element. The door frame unit is removable with preassembled active elements so that the same may be transported in a compact, easy manner from the factory to the place of use.

Abstract: An elevator car having a clutch pivotally carried by a car door and biased to an operative position in which drive rollers of an adjacent hatch door may be engaged by "open" and "close" vanes. A first parallelogram linkage operates the close vane in direct response to car door position, in a direction opposite to initial car door opening movement. A second parallelogram linkage, associated with the open vane, is operated when the open vane contacts a hatch door roller at the start of door opening, to unlock the car door by retracting a plunger from an opening in the car door sill. The car door clutch bias may be manually overcome by authorized maintenance personnel, to disengage the car door from a hatch door.

Abstract: An elevator car having a clutch carried by a car door for engaging drive rollers of an adjacent hatch door via "open" and "close" vanes of the clutch. A door operator mounted on the car includes a door drive arm which is linked to the car door via a door crank arm. A door lock carried by the door clutch prevents normal operation of the door crank arm, unless the open vane of the door clutch contacts a hatch door drive roller. Thus, unless the car is in a floor landing zone, the car door cannot be opened by a passenger inside the car.

Abstract: An elevator door arrangement includes at least one door panel and means engaging upper and lower portions of the panel for guiding the upper and lower portions for parallel movement. The means for guiding the lower part of the panel includes a guide member coupled to the panel that projects through an elongated, narrow slot in the sill. In one embodiment, the sill has a guide channel below the slot, and the guide member has a guide element that slidingly engage the guide channel walls. In another embodiment, a cable relating device includes a section above the door and one below the door, connected for synchronous movement. The cable relating device is connected to the upper part of the panel and to the guide member for imparting parallel movement.

Abstract: A hatchway door for an elevator system which includes a smoke seal. The smoke seal includes a compression seal along the trailing edge of each door panel which engages as the panel reaches the fully closed position, an astragal seal along the leading edge which engages another panel or a return, and sealing arrangements associated with the top and bottom portions of each door panel which seal the associated gaps with a spring loaded cam action which translates horizontal movement of the door panel to vertical movement of each sealing arrangement.

Abstract: The power operated sliding door of an elevator car is provided with a mechanical safety interlock which permits the car door to be moved more than a critical distance from its closed position only when the car is in a landing zone. A pivoted interlock hook on the car door has a normal position in which it engages an interlock lug on the car frame when the door moves the critical distance from closed position. A movable element on the car door is driven to move the hook to a clearance position relative to the interlock lug. Drive of the movable element occurs when it contacts an interengaging member on the hatch door as the car door first starts to move from closed position in a landing zone.

Abstract: A fish unloading system for removing fish from the main fish hold of a fishing boat. The lower portion of the main fish hold is filled with water and sufficient salt added to cause the fish to float near the surface of the water. A power-operated self-feeding fish-impelling device having an enclosure arranged in a loop with a discharge aperture formed in its upper portion is lowered into the hold. A plurality of blades or baskets are power driven about the interior of the enclosure. A pump is arranged with its suction in communication with the fish-impelling device to continuously draw water and fish towards the blades or baskets of the impeller so as to continuously propel fish upwardly from the hold. The system is utilized to unload a plurality of auxiliary fish holds connected to the main fish hold by access hatches. Fish in the auxiliary holds are floated through the access hatches by a recirculating flow of water from the main fish hold through the auxiliary holds and back into the main hold.