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| Number | Title | Issue Date |
| 5518086 | Procedure and apparatus for the control of elevator doors A method and apparatus for controlling doors of an elevator includes a passenger sensor and load sensor. The passenger sensor detects the presence of passengers in a lobby, and the load sensor generates a load signal indicating only a load of the elevator... | 05/21/1996 |
| 5503249 | Procedure for controlling an elevator group A system and method for controlling an elevator group including several elevators and related call devices which controls each elevator in a manner determined by the calls entered and the existing control instructions. When the control system has to decid... | 04/02/1996 |
| 5502818 | Procedure for the determination of message identification in the data transmission network of an elevator system A procedure is disclosed for determining the message identifiers in a control area network CAN data transmission network of an elevator system where message identifiers are used in the transmission of messages. Each node in the network monitors the data t... | 03/26/1996 |
| 5454449 | Wall structure for an elevator, and an elevator car A wall, ceiling or floor for an elevator car and to an elevator car in which these items are used has a specific structure. The structure includes sheets having on one side, at opposite edges, edge parts oriented in a direction differing from that of a sh... | 10/03/1995 |
| 5451854 | Procedure for reducing the starting current of a squirrel-cage motor, and a squirrel-cage motor unit designed for implementing the procedure A method for reducing the starting current of a squirrel-cage motor and a squirrel-cage motor unit designed for implementing the method for reducing the starting current. The squirrel-cage motor stator winding of each phase comprises at least two insulate... | 09/19/1995 |
| 5435416 | Determination of the number of persons entering and leaving an elevator car Procedure for determining the number of passenger transfers in an elevator car on the basis of car load data. The procedure of the invention includes continuous measurement of the car load during stoppage, filtering of the measurement data, recording of t... | 07/25/1995 |
| 5421432 | Method and apparatus for controlling and automatically correcting the command for deceleration/stoppage of the cage of a lift or a hoist in accordance with variations in the operating data of the system A system for adapting the deceleration/stoppage command to the varying momentary speeds of the cage which are due to varying load conditions of the cage itself. The system aso verifies the deceleration/stoppage distance of the cage at certain known speeds... | 06/06/1995 |
| 5411117 | Safety device arrangement A safety device arrangement for stopping the downward drift of an elevator car (1) has a controllable arrester (10) mounted on the supporting frame (7) of an elevator car. The arrangement is provided with latches (20), and for each latch a stop block (26)... | 05/02/1995 |
| 5404969 | Fire door for an elevator Fire door for an elevator, especially for use in the landing doorways of an elevator shaft. The fire door is mounted abreast of an elevator landing door. The fire protection characteristics of the fire door are so chosen that the elevator door and the fir... | 04/11/1995 |
| 5401103 | Guide seat for an elevator car for dampening of structure-borne noise Guide seat for an elevator car, which supports a guide moving along a guide rail (6). The guide seat comprises a fixing part by which the guide seat is attached to the car structure (2), and a base plate (12,26,33) on which a guide structure is mounted. T... | 03/28/1995 |
| 5373916 | Closure member for an elevator shaft The invention relates to a safety apparatus mounted in the doorway of an elevator shaft to prevent people, animals and objects from falling down into the shaft. The safety apparatus comprises a collapsible safety wall composed of laminae (1) and supported... | 12/20/1994 |
| 5370208 | Double-sided safety gear A safety gear e.g. for an elevator car or counterweight, comprises at least one wedge chamber (8) and at least one working wedge (9) acting on an elevator guide rail (30) and activated by a transmission element. For each working wedge (9), the safety gear... | 12/06/1994 |
| 5370205 | Traction sheave elevator Traction sheave elevator comprising a drive machine (10), a traction sheave (7) connected to the drive machine, two diverting pulleys (5,6), an elevator car (1), a counterweight (2) and a hoisting rope rigging (3) on which rigging the elevator car and its... | 12/06/1994 |
| 5361873 | Rope suspension arrangement Traction sheave elevator has a drive machine (1) and, coupled with it, a traction sheave (3) provided with a rope groove (2), the hoisting rope (4) running over the traction sheave, an elevator car (6) and its counterweight (7) suspended on the hoisting r... | 11/08/1994 |
| 5313549 | Procedure for filtering the speed feedback signal A procedure is disclosed for filtering the speed feedback signal in an elevator motor drive which is provided with a speed controller and in which the speed of rotation of the motor is measured. The procedure of the invention involves sampling the speed f... | 05/17/1994 |
| 5251726 | Toe guard for an elevator A toe guard for an elevator is disclosed, at least part of which consists of a structure penetrable to air flow, thus diminishing the tendency of the toe guard to increase the air flow in the space between the front wall of the elevator car and the shaft ... | 10/12/1993 |
| 5239142 | Selection of an elevator for service based on passenger location and elevator travel time A system for selecting an elevator in a group consisting of elevators serving the floors of a building, each floor being provided with call input devices for the input of the passengers' calls, the elevator group having a group control unit controlling th... | 08/24/1993 |
| 5229558 | Control of an elevator hoisting motor during under voltage conditions in the main power source A method and an apparatus for the control of an elevator a.c. or d.c. hoisting motor driven by a frequency converter unit, or by a rectifier unit, supplied by a three phase power source is disclosed. The voltage of the mains power source is monitored usin... | 07/20/1993 |
| 5229559 | Defining the traffic mode of an elevator, based on traffic statistical data and traffic type definitions A method for controlling an elevator group in which statistical data on a traffic flow within an elevator group, representing the times, local and total volumes of the traffic, and a number of different traffic types used in a group control are stored in ... | 07/20/1993 |
| 5214947 | Procedure and apparatus for checking the straightness of elevator guide rails and straightening deflections The present invention relates to a procedure for checking the straightness of elevator guide rails and straightening deflections of the rails, and an apparatus for implementing the procedure. The elevator guide rails are inspected by means of a measuring ... | 06/01/1993 |
| 5194797 | Procedure for the regulation of an asynchronous motor Procedure for regulating the stator flux and torque of an asynchronous motor by vector control in an imaginary space vector coordinate system, in which procedure the absolute value (|.PSI.s |) of the stator flux and the torque (M) are determine... | 03/16/1993 |
| 5163172 | Procedure and apparatus for the measurement of the currents in a frequency converter A procedure and apparatus for the measurement of the currents in a frequency converter, provides that the phase currents of the frequency converter are measured by storing, in memory, signals corresponding to the current of the d.c. circuit of the convert... | 11/10/1992 |
| 5159995 | Safety gear for an elevator A safety gear for an elevator, in which the safety gear housing is mounted on the frame using transverse bars or the like. To prevent accidental gripping of the wedges when the elevator car moves laterally, the safety gear housing is allowed to move later... | 11/03/1992 |
| 5156080 | Control valve for a hydraulic elevator Control valve for a hydraulic elevator provided with a speed regulating plug which moves in response to the flow of the hydraulic fluid and whose position determines the flow of hydraulic fluid into the actuating cylinder of the elevator. At each end of t... | 10/20/1992 |
| 5157574 | Overvoltage protector for rectifier/inverter bridges A device for overvoltage protection of rectifier/inverter bridges employing gate-controlled solid-state switches without zero diodes is disclosed. To protect at least the solid-state switches of the rectifier/inverter bridge against overvoltages, the devi... | 10/20/1992 |
| 5153808 | Procedure and apparatus for protection of a data transmission network The protected network consists of a signal bus provided with terminal impedances and connected via impedances to the supply voltage (+VIN) and signal ground (GND), and signal devices which are connected to the bus. To protect the network, the voltages on ... | 10/06/1992 |
| 5141080 | Device and procedure for opening of an elevator The invention relates to an elevator door opening device designed for opening the car doors and the landing doors. The door opening device comprises a power means and a door coupling apparatus for opening and closing the car and landing doors essentially ... | 08/25/1992 |
| 5141382 | Apparatus for storing and conveying roller pallets or equivalent A method and apparatus for the disposition of loads movable on wheels, e.g., roller pallets or their equivalent, in a storage area consisting of one or more storage levels located one above the other and provided with collateral flow-through channels for ... | 08/25/1992 |
| 5119908 | Procedure for mounting the guide rails for an elevator car or counterweight, and a mounting system implementing the procedure The invention relates to a procedure for mounting the guide rails for an elevator car or counterweight, wherein the guide rails are attached to an intermediate beam laid across the elevator shaft, the beam being attached at least by one of its ends to opp... | 06/09/1992 |
| 5107962 | Vertical transport system in a building Vertical transport system in a building provided with one or more hoistways with elevator cars moving in them, comprises at least one hoistway accommodating at least two elevator cars travelling above one another in such a manner that one (2) of the cars ... | 04/28/1992 |
| 5099957 | Procedure and apparatus for controlling a hydraulic elevator during approach to a landing A procedure and apparatus for controlling a hydraulic elevator during approach to a landing are disclosed, in which the speed of the elevator and the temperature of the hydraulic fluid are measured prior to beginning deceleration of the elevator. The dece... | 03/31/1992 |
| 5096020 | Elevator safety apparatus An elevator safety apparatus is disclosed which is designed to be mounted on an elevator car, which car moves along guide rails; said apparatus comprising a frame, an area for wedge housings formed in the frame, and wedges placed in the wedge housings on ... | 03/17/1992 |
| 5091841 | Procedure for the control of frequency converter and rectifier/inverter bridges, and a modulator unit designed for implementing the procedure A procedure and apparatus for the control of solid-state switches in three-phase frequency converter and rectifier/inverter bridges is disclosed. Such control employs pulse width modulation. In this procedure, the modulation pulses of each phase are gener... | 02/25/1992 |
| 5091816 | Procedure and device for overload and short-circuit protection of output drivers A procedure and device for overload and short-circuit protection of output drivers, uses a circuit that functions at several control voltage levels and in which at least one output driver is controlled in a normal situation by a reference value set indepe... | 02/25/1992 |
| 5076398 | Rope suspension system for an elevator A rope suspension apparatus for an elevator system, includes a bed, a motor 1 attached to the bed, a motor shaft 2, a traction sheave 4 so mounted on the shaft that the ends of the traction sheave are inclined at an angle relative to vertical, and at leas... | 12/31/1991 |
| 5073706 | Procedure and apparatus for detecting objects moving at varying speeds within a certain area The invention relates to a procedure and apparatus for detecting and counting objects having velocities and that are in a certain area, wherein at least one passive detector detects background radiation, the signal obtained from said detector is amplified... | 12/17/1991 |
| 5056627 | Hydraulic elevator A hydraulic elevator system of the type having a vertically travelling car includes a hydraulic actuator means disposed on a side of an elevator shaft and a car suspension means. The concentrated car suspension means comprises rope pulleys, a compensating... | 10/15/1991 |
| 5046586 | Control valve for a hydraulic elevator Control valve for a hydraulic elevator provided with a speed regulating plug which moves in response to the flow of hydraulic fluid, whereby the position of the speed regulating plug determines the rate of flow of hydraulic fluid into the actuating cylind... | 09/10/1991 |
| 5042621 | Method and apparatus for the measurement and tuning of an elevator system Method and apparatus for the measurement and tuning of an elevator system including at least one elevator having an elevator car and its control and driving equipment. The method uses at least one computer connected to the system. The elevator system is m... | 08/27/1991 |
| 5038244 | Device for overvoltage protection of a rectifier bridge feeding a d.c. motor and for control of the d.c. motor during emergency braking A device for overvoltage protection of a rectifier bridge feeding a d.c. motor and implemented using fully gate-controlled solid-state switches without zero diodes, and for control of the d.c. motor during emergency braking is disclosed. To protect at lea... | 08/06/1991 |
