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Match Document Document Title
7581621 Method and apparatus for controlling advance opening of doors in an elevator  
A method and an apparatus controls advance opening of doors in a double-deck elevator, in which elevator a car frame supporting the elevator cars is moved by means of a set of hoisting ropes by a...
7575101 Device for detecting objects on a glass door and elevator equipped therewith  
A detector of foreign objects, and particularly fingers, between the doors and the contiguous walls of landing and car openings in an elevator with glass car and landing doors includes a light beam...
7546903 Elevator system having location devices and sensors  
Example embodiments relate to a method and a system for integrating electric elements of an elevator in a single module, e.g. in the door operator of the elevator, to reduce the number of...
7537091 Magnetic elevator door mover  
An elevator door mover device ( 40 ) includes a threaded ferromagnetic shaft ( 42 ). Magnetic movers ( 48 ) associated with doors ( 26 ) generate magnetic fields that cause the doors to move...
7503434 Inputting or adjusting reference positions in a door controller  
A door controller and a method for inputting or adjusting one or more reference positions into the door controller have the controller connected to a door drive for moving a door and utilize a...
7484598 Positioning method in an elevator system  
The present invention presents a method and a system for the positioning of the elevator car and the door of the elevator in the condition monitoring system. In the method the accelerations of the...
7445089 Sealing device with magnetically movable door seal for a closable door leaf of an elevator installation  
An elevator installation has a sealing element that is movable by an electromagnetic actuator from a first position to a second position. The sealing element includes a seal carrier that is movably...
7350624 Safety system for an elevator structure  
Safety system of an elevator installation, with a control unit, a bus node, a safety element and a bus, which enables a communication between the control unit and the bus node. The bus node...
7281609 Elevator inspection safety devices  
An elevator car includes a cross-head portion and a balustrade mounted to the cross-head portion. The balustrade is moveable from a retracted position for normal operation of the car to a deployed...
7243760 Elevator door unit having mechanism to release lock unit manually in emergency  
An elevator door unit includes cage doors, a cage door lock unit, hall doors, and a lock release unit. The cage doors are provided in a cage which moves in a shaft. The cage door lock unit limits...
7165655 Neural network detection of obstructions within and motion toward elevator doors  
A camera ( 26 ), with suitable illumination (such as IR) provides images to a processing card ( 33 ) which converts the images to numerical vectors and applies them to a neural network ( 35 ) which...
7156210 Freight elevator landing door control  
A control system for a motorized freight elevator landing door in which all of the doors in a single line of a hoistway are controlled with one set of proximity sensors carried on the elevator car....
7140469 Three-dimensional monitoring in the area of an elevator by means of a three-dimensional sensor  
A device for monitoring an elevator area utilizes a three-dimensional semiconductor sensor for detecting three-dimensional image information. The sensor includes a light source that is mounted so...
7097001 Elevator car door movement restrictor  
An elevator door restrictor system for preventing an elevator door from being opened unless the elevator car is near a floor landing, utilizing battery backed electronics for sensing the presence...
7093692 Door control device of elevator  
An elevator door control device includes an obstruction sensor adapted to detect an obstruction in the vicinity of any one of the vertical frames of the doorway frame and to output an obstruction...
7063189 Method and apparatus for a scanning an elevator entry way  
A lift system for and method of controlling a lift car. The car providing service to a number of separate stations to enable a person or an article waiting in a predetermined region outside the...
7044271 Safety device for pinching zone of elevator doors  
The described safety mechanism is embodied for elevator systems with an elevator car, which can be displaced in an elevator shaft. The entrances to the elevator shaft and to the elevator car each...
7040457 Motor speed controller system for freight elevator doors  
A linear displacement potentiometer is mechanically tied to an elevator door/gate and provides a voltage corresponding to the door/gate position to a programmable controller. The programmable...
7013605 Door suspension apparatus  
A door suspension assembly includes a ferromagnetic flat plate horizontally extending from a support rail adapted to be attached to a door frame above a doorway or entrance portal. Two supporting...
6988594 Elevator door monitoring system  
A monitoring system for monitoring doors such as a shaft or cabin door, of a lift installation includes a sensor element associated with the doors for monitoring the state or position of the door....
6973998 Door state monitoring by means of three-dimensional sensor  
An apparatus and a method for monitoring an elevator door include a sensor for detecting three-dimensional image information. Processing equipment evaluates the image information of detected images...
6962239 Sliding door system with optical detector for safe door opening and closing  
A sliding door system has a pair of horizontally opposed vertical surfaces defining therebetween an opening, an upper horizontal surface connecting uppermost ends of the vertical surfaces, a lower...
6943508 Tubular linear synchronous motor control for elevator doors  
An apparatus for effecting non-contact linear door displacement comprising a tubular motor formed of a stator ( 1 ) formed from a plurality of magnets ( 21 ) arranged along a linear axis ( 15 ),...
6854565 Method for monitoring the door mechanism of an elevator  
The invention relates to a method for monitoring the condition of the door of an elevator and determining its need for maintenance, the door comprising a door mechanism, door panels and a door...
6732839 Contactless switching device for an elevator safety chain  
A monitoring device for an elevator includes a plurality of switching devices connected in a series safety chain. Each switching device has an active unit generating a pattern and a passive unit...
6715586 Upgraded elevator control circuit and method dealing with fire danger  
A method for upgrading an elevator control circuit having a phase 1 , alternate and phase 2 input circuits, includes placing a first impedance of a switching device across a door motor armature...
6675938 Door system including linear motor driving mechanism  
A door system includes a door support by which a door is movably supported, a linear motor for generating a thrust to open and close the door, a link mechanism made of a non-magnetic material for...
6631788 Elevator system with safety installation  
An elevator system has a pair of horizontally opposed vertical surfaces defining therebetween a doorway or opening to an elevator cage and a door moving horizontally to open and close the opening....
6625934 Method for monitoring environmental conditions in restricted spaces  
An environmental detection system is particularly suited for elevator hoistways and other locations where access is difficult or restricted. The inventive system comprises a fire rated access cage...
6604611 Condition-based, auto-thresholded elevator maintenance  
Variable thresholds ( 662, 663 ) are generated in response to an average defect rate ( 669, 690 ) generated under certain conditions ( 683-687, 696-698 ), excesses of which can set an internal flag...
6603398 Hoistway access detection system  
An improved hoistway access detection system including three safety chains, one for monitoring door position on the even numbered floors, one for monitoring door position on the odd numbered...
6591947 Use of multi-state sensors  
Transport system ( 2 ), comprising a controller, a drive motor and a safety switch ( 18 ) that is connected to a safety-related part ( 8, 10 ) of the transport system ( 2 ) and is able to...
6543583 Elevator auditing with recommended action, reason and severity in maintenance messages  
Information including normal and abnormal operating conditions and events, resulting from operation of elevator car and landing doors, is monitored and recorded (FIGS. 1-28 ), compared and...
6543581 Door operator assembly with motorized rollers  
An elevator system includes an elevator cab having doors that are movable between open and closed positions. A rail is mounted to the cab. At least one roller defines an axis of rotation and is...
6516923 Elevator auditing and maintenance  
Information including normal and abnormal operating conditions and events, occurring during the operation of an elevator car door and landing doors, is monitored and recorded (FIGS. 1-25 ),...
6508332 Elevator car door locking and unlocking mechanism  
An elevator car door opening and closing apparatus is taught having a clutch assembly carried by each car door for coupling with a landing door locking and unlocking assembly whereby the car and...
6481533 Single inverter controller for elevator hoist and door motors  
A single inverter ( 8 ) provides variable frequency, variable voltage current output ( 11 ) to either a hoist motor ( 3 ) or a door motor ( 6 ), depending on the operating mode of the elevator car...
6452353 System for detection of obstructions in a motorized door system  
Method of detecting obstructions encountered by a motorized door. The method includes providing a signal processor with one or more signals indicative of a predetermined door trajectory profile for...
6443265 Safety device of the elevator door  
A safety device for an elevator door characterized by the following facts: a lever ( 2 ) with one end ( 3 ) pivoted at an elevator door safety shoe ( 1 ) has its other end ( 4 ) fixed and supported...
6439350 Differentiating elevator car door and landing door operating problems  
Signal processing and diagnostic routines ( 19 ) of elevator controllers ( 9-12 ) count the total number of runs to landings (O-F) of elevators ( 4-7 ) along with the number of runs to landings at...
6392537 Remote monitoring system for automatic door systems  
A maintenance station monitors and maintains a plurality of automatic door systems at remote locations. Each door system includes a control unit for controlling the operation of an automatic door,...
6386325 Elevator system with hall scanner for distinguishing between standing and sitting elevator passengers  
An elevator system includes a scanner installed in a call registerer of an elevator hall and/or on a jamb of an elevator hall for scanning the elevator hall or an area proximate the elevator hall;...
6382362 Optical monitoring system for hoistway door interlocks  
A system for monitoring an elevator door in a hoistway. The elevator door is movable between a closed position and an open position. The system includes a transmitter for emitting an optical signal...
6223861 Elevator hoistway access safety  
The condition of the hoistway doors and the elevator door are continuously monitored. The opening of a hoistway door unaccompanied by opening of the car door being an indication of hoistway access;...
6032762 Door operator for elevators having curved doors  
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...
5984051 Remote elevator call requests with descriptor tags  
Remote control devices borne by potential passengers are alerted to initiate a request for elevator service by beacons in the building. The beacon alert message includes a tag identifying the floor...
5949036 Double linear motor and elevator doors using same  
A single linear motor has two sets of active sides with windings, secondaries and backirons. The front of the motor drives one load and the rear of the motor selectively drives another load. The...
5918705 Building elevator door restrictor  
Opening of an elevator door by occupants of a car which is stalled between building floors is prevented by a locking member which is movable by an electrical actuator between a door locking...
5896951 Optimization of magnetizing current in linear induction motors  
Magnetizing current generated in a linear induction motor driving elevator car doors in elevator systems is optimized. Magnetizing current level is set low for door operation modes requiring lower...
5881844 Secondary positioning system for elevator car doors  
A secondary positioning system for elevator car doors includes three sensors positioned in register with a plurality of openings formed within a door hanger. The unique spacing between the sensors...
Matches 1 - 50 out of 151 1 2 3 4 >