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| Number | Title | Issue Date |
| 7441631 | Passive ultrasonic RFID elevator positioning reference system An apparatus for measuring a position of a moveable platform includes a plurality of transponder modules. The transponder modules include an electromagnetic transmitter adapted to emit an electromagnetic signal, and an acoustic receiver adapted to receive an acousti... | 10/28/2008 |
| 7392885 | Emergency escape apparatus for elevator An emergency escape apparatus for elevator is disclosed. In response to power outage manually pulling an actuation rope will pivot a pivot bar counterclockwise to rotate front and rear cams, press front and rear cams onto front and rear actuation members respectivel... | 07/01/2008 |
| 7360630 | Elevator positioning system The present invention provides an elevator position compensation system which minimizing the re-leveling of an elevator car in an elevator shaft. The elevator car is suspended in the shaft by an elevator cable system and elevator motor, wherein the elevator position... | 04/22/2008 |
| 7350883 | Detecting elevator brake and other dragging by monitoring motor current Elevator brake or other drag is checked by establishing (10-13) baseline motor currents at plural determined positions as the car is moved up and down both empty and with full load. In a normal run (21), the load is recorded (22) and the ... | 04/01/2008 |
| 7287625 | Forklift safety sensor and control system A forklift safety sensor and control system for preventing unsafe wear on the bottom surface of the fork. A fork height sensor detects when the fork is below a predefined threshold height at which the bottom surface is in close proximity to the ground or is in conta... | 10/30/2007 |
| 7268514 | Motor control for stopping a load and detecting mechanical brake slippage A method and apparatus for stopping an AC motor that is controlling a load while detecting mechanical brake slippage of a mechanical brake for holding the load against movement includes a controller for decreasing torque-producing current commands from the drive whi... | 09/11/2007 |
| 7264227 | Self-climbing stage light support A self-climbing stage lighting system having a self-climbing apparatus and a light bar is disclosed. The self-climbing apparatus is hung from cables that extend approximately vertically from a fixed endpoint. The self-climbing apparatus includes an elongated support... | 09/04/2007 |
| 7261185 | Equipment for fine positioning of a car of a multi-stage car A multi-stage elevator car has equipment for fine positioning of the cars wherein the car thresholds are positionable at the level of the floor thresholds. The fine positioning adjusting equipment operates on the principle of a double lever and moves a car frame alo... | 08/28/2007 |
| 7232011 | Equipment for fine positioning of the cars of a multi-stage car for an elevator A multi-stage elevator car has equipment for fine positioning of the cars wherein the car thresholds are positionable at the level of the floor thresholds. Adjusting equipment operating on the principle of a differential block and pulley is provided for fine positio... | 06/19/2007 |
| 7199547 | Apparatus, method or system for controlling mobile body In order to control the position of a mobile body without using a position detector, a magnetic pole position of a rotor of a synchronous motor is estimated based on electrical quantities in relation to electric power supplied to the synchronous motor and then the m... | 04/03/2007 |
| 7185743 | Drive for an elevator installation A drive for an elevator installation which drives a car and a counterweight with a supporting and driving belt includes a drive shaft and at least one drive pulley driven in rotation by a motor. An air guide element is arranged in the region between the motor and th... | 03/06/2007 |
| 7117981 | Load bearing member for use in an elevator system having external markings for indicating a condition of the assembly A load bearing assembly in an elevator system includes a plurality of discernable markings on an external surface of the assembly. A monitoring device includes at least one detector that detects locations of the markings along the length of the assembly. Changes in ... | 10/10/2006 |
| 7090056 | Double deck elevator that controls a velocity change during inter-cage distance adjustment A double deck elevator including a winding machine which lifts up/down a cage frame loaded with two cages in a vertical direction, a cage driving unit which changes a relative distance between upper and lower cages, and a cage position controller which starts an int... | 08/15/2006 |
| 7023153 | Motor control device It is an object of the invention to regulate a control gain without requiring a host controller. In the invention, a command pattern generating section (14) generates a basic operation pattern for operating a motor based on various parameters such as a... | 04/04/2006 |
| 7017714 | Double deck elevator There is provided a double-deck elevator which does not cause any impacts or vibrations on each cage when adjusting the spacing in the vertical direction between upper and lower cages. Loads on an upper support beam from right and left support arms for hoisting and ... | 03/28/2006 |
| 6464041 | Emergency lifting or lowering device of an elevator An emergency lifting or lowering device of an elevator includes a transmission toothed wheel fitted to a top of a passage receiving a carriage of the elevator. The transmission wheel has teeth locking into an adjacent one of several toothed wheels arrange... | 10/15/2002 |
| 6311802 | Velocity instruction generation apparatus for car of elevator system and velocity control method thereof A velocity instruction generating apparatus for a car of an elevator system and a velocity instruction generating method which make it possible to decrease a computation time, computation amount and computation error by computing a velocity instruction ba... | 11/06/2001 |
| 6283252 | Leveling control device for elevator system The present invention relates to a leveling control device for an elevator system which estimates a load torque applied to an axis of an alternating current motor on the basis of a torque current component and a rotation angle of the alternating current m... | 09/04/2001 |
| 6206143 | Elevator landing apparatus An elevator landing apparatus including a detector mounted on one of a doorsill part of a cage of an elevator provided in an elevator shaft and a doorsill part of an elevator hall, and a detected member mounted on the other of the doorsill part of the ele... | 03/27/2001 |
| 6196355 | Elevator rescue system An elevator rescue system includes a power source of back-up electrical power. A manually-operated, rescue enable switch switchably permits the transmission of electrical power from the power source to a motor brake coil of an elevator car during a rescue... | 03/06/2001 |
| 6164416 | Procedure and apparatus for the deceleration of an elevator To decelerate an elevator to a floor, the position of the elevator is determined and this data is used to calculate a required deceleration value with which the speed and deceleration of the elevator are reduced to zero upon reaching the floor and the dec... | 12/26/2000 |
| 6161652 | Method and apparatus for controlling elevator cars in a common sling A method and an apparatus for controlling an elevator is equipped with a deck-distance drive machine which by reference to positional information adjusts the distances between the individual cars in a common car sling in such a way that each car can stop ... | 12/19/2000 |
| 6119816 | Emergency stop releasing method for elevator An emergency stop state releasing method for an elevator, which includes a cage configured to ascend and descend along a first guide rail in an elevator shaft, a counterweight configured to ascend and descend along a second guide rail in the elevator shaf... | 09/19/2000 |
| 6082498 | Normal thermal stopping device with non-critical vane spacing A normal terminal stopping device (NTSD) using terminal zone position checkpoint detection with a binary coding method to identify a checkpoint within a terminal zone, and a digital shaft encoder mounted on the shaft of the hoist motor to determine a car ... | 07/04/2000 |
| 5889238 | Deceleration time for an elevator car A method of adjusting an elevator speed comprising the steps of determining a desired creep period, determining an actual creep period, determining a difference between the desired creep period and the actual creep period, determining a deceleration time ... | 03/30/1999 |
| 5869795 | Elevator floor arrival correction control An elevator is provided with floor arrival correction control which monitors the elapsed time following completion of the previous floor arrival correction. If the time elapsed is less than a fixed time (102), the elevator car is controlled with a standar... | 02/09/1999 |
| 5848671 | Procedure for stopping an elevator at a landing The invention relates to a procedure for stopping an elevator car at a landing, in which procedure the travelling velocity and position of the elevator in the shaft are measured and a distance from the landing, i.e. a deceleration point at which decelerat... | 12/15/1998 |
| 5831227 | Differential magnetic alignment of an elevator and a landing An apparatus for determining if an elevator car is level with respect to a landing comprises: a first magnet disposed proximate to the landing; a second magnet disposed proximate to the landing; a sensor for providing a level signal in response to detecti... | 11/03/1998 |
| 5777280 | Calibration routine with adaptive load compensation A load compensation calibration method for an elevator controller includes the steps of moving an elevator car in a first direction, the first direction a first creep speed region; determining the time to travel a given distance; during the first run; det... | 07/07/1998 |
| 5686707 | Elevator control system to land car at floor during abnormal conditions Whenever the elevator cage (2) enters a landing zone at each target stop floor, the landing zone calculator (32) generates discriminate signals (32b, 32c, 32d) indicative of whether the cage lands from a normal distance or from one of abnormal distances (... | 11/11/1997 |
| 5677519 | Elevator leveling adjustment A method of adjusting a leveling time of an elevator car is disclosed. The method includes the steps of: moving the elevator car in a hoistway; transmitting a first signal by a first sensor in response to moving the elevator car in the hoistway; beginning... | 10/14/1997 |
| 5659159 | Elevator level control system using elevator/landing gap as a reflection duct An emitter and a plurality of sensors and are used to detect the relative positions between an elevator platform and landing sill. The emitters radiate energy through a reflection duct formed between the elevator platform and the landing sill. The plurali... | 08/19/1997 |
| 5637841 | Elevator system An elevator system includes a CPU to dictate speed signals during a normal elevator car run, and a normal terminal stopping device (NTSD) to dictate maximum allowable speeds approaching the top and bottom terminal floors. The NTSD system normally operates... | 06/10/1997 |
| 5526902 | Safety device for lifts stopped between floors The invention comprises an autonomous power source and damper, a manual command in the lift cabin, a coupler for coupling the safety device to the shaft of the lift equipment, a displacement speed self-regulating device for the lift cabin, a limiting devi... | 06/18/1996 |
| 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 |
| 5159162 | Elevator leveling control device An elevator control device includes an operation control device for controlling the speed of a car by a regular-speed command when the car is in a normal operation, and the operation control device generates a readjusting-speed command for retaining the c... | 10/27/1992 |
| 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 |
| 5085294 | Elevator control apparatus An elevator control apparatus comprises drive device for driving an elevator car and a pulse generator, which is connected to the drive device and which generates pulses, the number of which are proportional to the travel distance of the car. The apparatu... | 02/04/1992 |
| 4976338 | Leveling control system for hydraulic elevator A hydraulic elevator includes level sensors for establishing dead zones of different sizes and for changing the dead zone while the car is stopped at a floor. A controller selects the size of the dead zone, for purposes of relevel operations, based upon e... | 12/11/1990 |
| 4940117 | Procedure for the tuning of the position controller of an elevator A procedure for the tuning of a position controller of an elevator is disclosed wherein an artificial excitation signal is input to the elevator drive system, the response corresponding to the excitation is measured, a mathematical model of the elevator s... | 07/10/1990 |
