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| Number | Title | Issue Date |
| 8141685 | Elevator apparatus having vibration damping control In an elevator apparatus, an actuator for generating a vibration-damping force against the lateral vibration of a car is provided in parallel to elastic member for preventing the lateral vibration of the car. The actuator is controlled by a vibration-damping control... | 03/27/2012 |
| 8091686 | Magnetic guide apparatus A signal correction arithmetic unit is provided in a control apparatus to control a magnetic force of a magnetic guide unit. The signal correction arithmetic unit differentiates detection signals of two gap sensors, and integrates and outputs a differential signal w... | 01/10/2012 |
| 8011478 | Elevator vibration damping system having damping control A vibration damping system for an elevator is provided with a damping device (5) that is provided between a cab (1) and a car frame (2) for supporting the cab (1) and whose damping coefficient can be changed. A speed detector detects the ... | 09/06/2011 |
| 8002086 | Magnetic guide apparatus A magnetic guide apparatus includes at least two gap sensors which are disposed with a predetermined interval in a direction of movement of a moving body, and detect a gap between a magnet unit and a guide rail, a signal correction unit which determines variation am... | 08/23/2011 |
| 7909141 | Elevator vibration damping system having damping control A vibration damping system for an elevator is provided with a damping device (5) that is provided between a cab (1) and a car frame (2) for supporting the cab (1) and whose damping coefficient can be changed. A speed detector detects the ... | 03/22/2011 |
| 7841451 | Non-contact running type elevator In an elevator including a guide apparatus which levitates the car from a guide rail by an effect of magnetic force and non-contactly runs and guides the car, the guide apparatus is controlled in a manner to generate magnetic force with respect to at least two of mo... | 11/30/2010 |
| 7828122 | Vibration damping device for an elevator In a vibration damping device for an elevator, an actuator for generating a vibration damping force acting on an elevator car is provided in parallel with a spring for urging a guide roller against a guide rail. The actuator is controlled by a controller. The contro... | 11/09/2010 |
| 7793760 | Elevator An elevator includes guide rails laid in an elevator shaft vertically, an elevator car moving up and down along the guide rails, guiding units provided on the elevator car for guiding it, the guiding unit having a magnet unit including cores and coils forming electr... | 09/14/2010 |
| 7621377 | Elevator with vertical vibration compensation An elevator has a car traveling along guide rails within a hoistway and a main drive propelling the car. A sensor mounted on the car measures a vertical travel parameter of the car, a comparator compares the sensed car travel parameter with a reference value derived... | 11/24/2009 |
| 7543686 | Elevator with rollers having selectively variable hardness An elevator system includes a roller (16) having a hardness that varies responsive to a magnetic field (20). The roller (16) rolls along a guide rail (28) to maintain a desired orientation of the elevator car (12). In one example, ... | 06/09/2009 |
| 7503433 | Elevator An elevator having an inner car suspended within an outer car, and which does not require the provision of mechanical room. A drive motor can be provided in one of rear side top, underside, and either side of the car. The invention has the following advantages. The ... | 03/17/2009 |
| 7493990 | Thermal protection of electromagnetic actuators The present invention provides a method and apparatus for thermally protecting an electromagnetic actuator used to suppress vibrations in an elevator installation. The apparatus includes a temperature evaluation unit that determines an actual temperature of the actu... | 02/24/2009 |
| 7424934 | Method for vibration damping at an elevator car A method for designing a regulator uses a predetermined overall model of an elevator car with known structure. The model parameters are known to greater or lesser extent or estimations are present, wherein the parameters for the elevator car used are to be identifie... | 09/16/2008 |
| 7401683 | Elevator vibration damping apparatus and method The present invention automatically detects the onset of instability of an elevator active ride control system and activates a system shutdown if it occurs. As an elevator car is guided along rails by guide elements, a plurality of sensors mounted on the car measure... | 07/22/2008 |
| 7379802 | Method of damping the parasitic vibrations coming from the front axle assembly of a motor vehicle The invention relates to a method for motor vehicles provided with an electrical sero steering controlled by an electronic processor. The method comprises using an electrical signal within the processor which has at least one component image of the parasite vibratio... | 05/27/2008 |
| 7377363 | Elevator with variable drag for car and counterweight An elevator car and counterweight system is provided with a variable drag element. The variable drag element is controlled such that the lower of the counterweight and the car has a higher drag against further movement. In an embodiment which is particularly useful ... | 05/27/2008 |
| 7354028 | Method for controlling application of brakes in single drum hoist systems A method of damping the oscillations during an emergency stop of an ascending single drum hoist system in a shaft having a conveyance, the mechanical brakes applying a braking force to the drum and the drum rotating in a first direction having a speed, comprising ap... | 04/08/2008 |
| 7339343 | Method for correcting speed feedback in a motor A method for correcting speed feedback in a drive motor by calculating the averages of speed reference and speed measurement for both downward and upward constant-speed travel and then identifying the gain and zero factors and correcting the measured speed measureme... | 03/04/2008 |
| 7314120 | Motor control for elevator using two control signals A method and a system for controlling an elevator that does not change the torque direction, such as an elevator without counterweight. The elevator has an alternating-current electric motor (M1), such as a permanent magnet motor or an asynchronous motor, and... | 01/01/2008 |
| 7314119 | Equipment for vibration damping of a lift cage Equipment for reducing vibrations of a lift cage guided at rails comprises a plurality of guide elements for guiding the lift cage along the rails, a sensor for detecting positional changes of the lift cage and/or of accelerations occurring at the lift cage, an actu... | 01/01/2008 |
| 7314118 | Equipment and method for vibration damping of a lift cage An improved equipment and method for reducing vibrations of a lift cage is intended for use in lifts of the type having a lift cage is intended for use in lifts of the type having a lift cage guided along rails in which a sensor for detecting positional changes of t... | 01/01/2008 |
| 7281903 | Device for varying the pressure of the fluid delivered by a jet washer Device for varying the delivery pressure of a jet washer comprising a positive-displacement pump operated by a single-phase electric motor powered by alternating current and having a delivery nozzle of predetermined cross-section, and electronic means for controllin... | 10/16/2007 |
| 7246687 | Elevator car with eccentric load compensation system A weight compensation system and a method of operating the system for compensating eccentric loading of an elevator car vertically movable in an elevator shaft. The elevator car has spring-mounted rollers engaging guide rails and the system includes sensors detectin... | 07/24/2007 |
| 7235948 | Forklift and method for controlling induction motor applied to the same A forklift having a cargo apparatus, the responsiveness of which to the operation by a user is improved. The forklift has: a DSP which generates a frequency instruction f* in response to the operation to a cargo apparatus operation lever, a voltage instruction V* fr... | 06/26/2007 |
| 7202637 | Distributed control method The present invention provides an improved control method and apparatus allowing units arranged at different spaced apart locations to be controlled without the need for a high bandwidth link between the units and the controller. This allows a single controller to c... | 04/10/2007 |
| 7195707 | Apparatus for determining weight and biomass composition of a trickling filter In one embodiment, a filter media tower assembly is provided comprising a first portion and a second portion, wherein the first portion is suspended within the second portion. The first portion is a removable media tower or cage for holding filter media, whereas the... | 03/27/2007 |
| 7187532 | Device and a method for stabilizing a web or a filament of ferromagnetic material moving in one direction A device and a method for stabilising a metallic object of magnetic material. The metallic object is transported along a transportation path or plane. The plane includes a transportation direction and is parallel to the longitudinal direction of the object therein. ... | 03/06/2007 |
| 7164251 | Oscillation adjuster and oscillation adjusting method A vibration controller controls vibrations generated in a driven object included in a system subject to vibrations due to the dynamic unbalance or eccentricity of a rotating member driven for rotation by an electric motor. An angular position transforming unit (4... | 01/16/2007 |
| 7141946 | Method and apparatus for providing optimal acceleration feedback A method and apparatus for use with a motor controller that receives a command velocity and that applies voltages to drive a motor at the command velocity, the apparatus comprising a dual inertia lost motion assembly including a motor and a load couplable to the mot... | 11/28/2006 |
| 7058487 | Control apparatus for hybrid vehicle In a control apparatus for a hybrid vehicle which is able to travel under the driving force from at least one of an internal-combustion engine E and a drive motor connected to the internal-combustion engine, when an FI/AT/MGECU and a MOTECU execute motor damping whi... | 06/06/2006 |
| 7026780 | Method for stabilizing the movement of an articulated chain of a chain block, especially to prevent the formation of a resonance oscillation of the chain, and a chain block apparatus The invention concerns a method for stabilizing the motion of an articulated chain of a chain block, especially to prevent the formation of resonance oscillation of the chain, in which an articulated chain is led across a polygonal chain wheel with non-uniform pitch... | 04/11/2006 |
| 7014013 | Guiding devices of elevator A device, which is provided at a car, for guiding the car along guide rails, the device comprises, a non-contact type of actuator configured to generate a magnetic force which keeps the actuator away from surfaces of a rail by predetermined distances, a unit configu... | 03/21/2006 |
| 7014014 | Safety device for monitoring a movable element A safety device for monitoring a movable element, in particular, for elevators, is provided. The safety device includes a speed determination unit for determining the speed of the movable element, a comparator device for comparing a predetermined speed with the dete... | 03/21/2006 |
| 7011184 | Increasing traffic handling performance of an elevator system based upon load A method and apparatus for utilizing unused power available in an elevator that is not fully loaded to improve the traffic handling capacity of an elevator system. The present invention can be used to provide an optimized velocity profile for the elevator based on t... | 03/14/2006 |
| 7007774 | Active horizontal vibration reducing device for elevator An elevator vibration reducing device in which horizontal vibrations of a cage are detected by a vibration sensor. The cage is displaced horizontally by an actuator. A control portion for controlling the actuator has a computing portion for computing a vibration red... | 03/07/2006 |
| 6959787 | Elevator car frame vibration damping device A device for active vibration damping dampens the structural resonance of an elevator car frame with a car body through measurement of the deformation of the frame. Under elastic deformation, a safety plank and a crosshead of the frame move parallel and relative to ... | 11/01/2005 |
| 6786304 | Guide for elevator A guide device for an elevator in which a pair of corresponding actuators are controlled by controllers in accordance with information from acceleration sensors, and the force with which guide members are pressed against guide rails is adjusted. Each controller incl... | 09/07/2004 |
| 6763917 | Elevator vibration reduction apparatus including a dead band filter A vibration reduction apparatus for an elevator includes acceleration sensors for detecting vibrations of a elevator car, controllers for calculating forces to be applied to the elevator car, based an signals output by the acceleration sensors, and actuators for app... | 07/20/2004 |
| 6668980 | Elevator car isolation system and method The isolation system and method comprise suspending an elevator platform from an upper portion of an elevator sling with upper tension members. In addition to being suspended from the sling by upper tension members, the elevator car platform may be secure... | 12/30/2003 |
| 6640935 | Elevator having vibration damping to attenuate vibration transfer to an elevator cage An elevator including a cage for accommodating passengers configured to move up and down in a shaft along a guide rail, a support base attached to a lower portion of the cage, a plurality of car sheaves rotatably secured to the support base through respec... | 11/04/2003 |
