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Browse by Category: Main > Transportation & Automotive
Class Information
Number: 187/291
Name: Elevator, industrial lift truck, or stationary lift for vehicle > Having specific load support drive-means or its control > Includes control for power source of drive-means > With specific electrical component > For electric power source > Having means for final leveling
Description: Control* having means which (a) begins its operations when a relatively short vertical distance remains between the load-underlying support surface and a landing* at which it is stopping and (b) adjusts the regulating functioning of the control* to accurately align the landing* and load-underlying support surface when fully stopped.


Patents under this class:
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Patent Number Title Of Patent Date Issued
7588124 Speed control method of elevator-purpose inverter and speed control apparatus thereof Sep. 15, 2009
7581621 Method and apparatus for controlling advance opening of doors in an elevator Sep. 1, 2009
7562747 Elevator installation and method for determining and analyzing an elevator car position Jul. 21, 2009
7549515 Electrical elevator rescue system Jun. 23, 2009
7484598 Positioning method in an elevator system Feb. 3, 2009
7441631 Passive ultrasonic RFID elevator positioning reference system Oct. 28, 2008
7392885 Emergency escape apparatus for elevator Jul. 1, 2008
7287625 Forklift safety sensor and control system Oct. 30, 2007
7268514 Motor control for stopping a load and detecting mechanical brake slippage Sep. 11, 2007
7261185 Equipment for fine positioning of a car of a multi-stage car Aug. 28, 2007
7232011 Equipment for fine positioning of the cars of a multi-stage car for an elevator Jun. 19, 2007
7051842 Emergency moving device of an elevator May. 30, 2006
6464041 Emergency lifting or lowering device of an elevator Oct. 15, 2002
6311802 Velocity instruction generation apparatus for car of elevator system and velocity control method thereof Nov. 6, 2001
6283252 Leveling control device for elevator system Sep. 4, 2001
6206143 Elevator landing apparatus Mar. 27, 2001
6196355 Elevator rescue system Mar. 6, 2001
6164416 Procedure and apparatus for the deceleration of an elevator Dec. 26, 2000
6161652 Method and apparatus for controlling elevator cars in a common sling Dec. 19, 2000
6119816 Emergency stop releasing method for elevator Sep. 19, 2000
6082498 Normal thermal stopping device with non-critical vane spacing Jul. 4, 2000
5889238 Deceleration time for an elevator car Mar. 30, 1999
5869795 Elevator floor arrival correction control Feb. 9, 1999
5848671 Procedure for stopping an elevator at a landing Dec. 15, 1998
5831227 Differential magnetic alignment of an elevator and a landing Nov. 3, 1998
5777280 Calibration routine with adaptive load compensation Jul. 7, 1998
5686707 Elevator control system to land car at floor during abnormal conditions Nov. 11, 1997
5677519 Elevator leveling adjustment Oct. 14, 1997
5659159 Elevator level control system using elevator/landing gap as a reflection duct Aug. 19, 1997
5637841 Elevator system Jun. 10, 1997
5526902 Safety device for lifts stopped between floors Jun. 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 Jun. 6, 1995
5159162 Elevator leveling control device Oct. 27, 1992
5099957 Procedure and apparatus for controlling a hydraulic elevator during approach to a landing Mar. 31, 1992
5085294 Elevator control apparatus Feb. 4, 1992
4976338 Leveling control system for hydraulic elevator Dec. 11, 1990
4940117 Procedure for the tuning of the position controller of an elevator Jul. 10, 1990
4886413 Loader platform interface control and stop means Dec. 12, 1989
4785914 Elevator system leveling safeguard control and method Nov. 22, 1988
4750589 Elevator leveling control Jun. 14, 1988
4719994 Floor re-leveling apparatus for elevator Jan. 19, 1988
4674604 Elevator inner and outer door zone sensor arrangement Jun. 23, 1987
4520904 Elevator leveling signal error and correction Jun. 4, 1985
4518062 Procedure and measuring circuit for stopping an elevator May. 21, 1985
4494628 Elevator system Jan. 22, 1985
4493399 Elevator control system Jan. 15, 1985
4487293 Elevator/hatch controller platform leveling logic with safety features Dec. 11, 1984
4466510 Automatic floor-leveling means for a cable-suspended elevator Aug. 21, 1984
4463833 Elevator system Aug. 7, 1984
4452341 Load change responsive elevator speed control apparatus Jun. 5, 1984

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