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| Number | Title | Issue Date |
| 5925859 | Landing control system A landing control system comprising an elongated nonmagnetic strip extending vertically along the length of the shaft, having along its length, at predetermined sites, magnetic adhesive tape containing coded information. A sensor for reading the coded inf... | 07/20/1999 |
| 5893433 | Elevator car position detecting apparatus An elevator car position detecting apparatus includes plates arranged at selected operation points defined along the elevator path, in such arrangement that one operation point is distinguishable from another operation point. Position detectors are provid... | 04/13/1999 |
| 5869794 | Method and device for increased safety in elevators Method and device for stopping of an elevator cage due to a deviation of the elevator position, acceleration, or speed from a travel curve in excess of a certain predetermined safety margin. Travel parameters, computed by the elevator control, may be pass... | 02/09/1999 |
| 5844180 | Equipment for the production of elevator shaft information A device for monitoring the positioning an elevator cage within an elevator shaft. A light curtain with several light beams extends over a length of a cage threshold and along a height of a cage door. The light curtain may be produced by a first transmitt... | 12/01/1998 |
| 5798490 | Procedure and apparatus for determining the position of an elevator car A procedure for determining the position of an elevator car in which the code data contained in code units mounted in the building is read by means of a code data detector unit (4) in such manner that a code unit containing floor data and door zone data i... | 08/25/1998 |
| 5693919 | Evacuation system for elevators An apparatus for performing an evacuation journey of an elevator car includes at least one brake control apparatus mounted on the car and an evacuation drive. In the case of an interruption in the normal travel of the car, an evacuation journey is initiat... | 12/02/1997 |
| 5682024 | Elevator position determination An elevator position determination system for determining the position of an elevator car disposed in the elevator hoistway includes a transceiver disposed on the elevator car for generating a query signal and a transponder disposed in the elevator hoistw... | 10/28/1997 |
| 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 |
| 5594219 | Elevator position apparatus An elevator position apparatus for determining if an elevator car is positioned within a door zone includes an encoded medium disposed vertically in an elevator hoistway, at least two door zone sensors for providing first and second door zone sensor signa... | 01/14/1997 |
| 5288200 | Bottled water installer An installer comprising a supporting structure and a carriage adapted to carry a water bottle. The carriage is mounted on the supporting structure for movement along a path between a loading position in which the carriage is adapted to receive the water b... | 02/22/1994 |
| 5247139 | Two-channel forked light barrier detecting vertical position A two-channel forked fail-safe light barrier generates shaft position information in the region of the floors for the premature opening of the doors on arrival of an elevator car and includes a cyclical dynamic self-monitoring circuit by means of which a ... | 09/21/1993 |
| 5156239 | Disc brake/load weighing assembly for elevator drive sheave Movement of an elevator cab drive sheave is controlled by a disc brake/load weighing assembly which is operably connected to the output shaft and sheave of the elevator drive machine. The disc brake assembly acts as the operating brake for normal operatio... | 10/20/1992 |
| 5153390 | Method for avoiding terminal landing position initialization after power loss In an elevator system, primary marking means, placed near every floors and secondary marking means placed near alternate floors are read by a scanner. Upon scanning, a marking number signal is provided indicating whether a primary marking means and second... | 10/06/1992 |
