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| Number | Title | Issue Date |
| 7905328 | Brake device of an elevator car A brake device of an elevator car with a brake unit that is mounted on the elevator car. The brake drive includes a flexible tension member that passes around two tension-members reversing-sheaves. One end of the tension members extends parallel to the travel path o... | 03/15/2011 |
| 7753176 | Emergency stop system of elevator In an emergency stop system for an elevator, a governor sheave that moves in synchronism with the raising and lowering of a car is wound around a governor sheave. The car is mounted with a safety device for braking the car through displacement of the car, which is c... | 07/13/2010 |
| 7607516 | Elevator governor device An elevator governor includes a selectively powered switch (60) that is activated when an elevator car moves at a speed that exceeds a selected limit. The speed limit is lower than normally expected car speeds during normal elevator operation. The switch (... | 10/27/2009 |
| 7575099 | Remotely resettable ropeless emergency stopping device for an elevator A brake mechanism (10) for an elevator (2) is activated in response to an electronic control signal to prevent movement of an elevator car (16) under predetermined conditions. The brake mechanism is preferably a safety mechanism (10) and ... | 08/18/2009 |
| 7537090 | Method and appliance for tripping the safety gear of an elevator using an overspeed governor A method for tripping safety gear of an elevator, at a speed lower than a gripping speed of the elevator may include: slowing a rope sheave of an overspeed governor of the elevator using a device adapted to slow the rope sheave; disconnecting an actuator connected t... | 05/26/2009 |
| 7448471 | Elevator installation The invention relates to an elevator installation comprising at least one car, which has a safety gear and with which a control unit, a drive and a brake are associated, and further comprising a safety device for avoiding a collision of the car with an obstacle, ano... | 11/11/2008 |
| 7353913 | Elevator hoisting machine and motor A elevator hoisting machine is provided with a stator mounting portion at which a stator core of a motor is mounted to a surface of a side opposite to a sheave in a sheave rotation centerline direction of the hoisting machine. A hat shape fixed frame member in which... | 04/08/2008 |
| 7228943 | Elevator apparatus with position correction for overspeed detection An elevator apparatus has a criterion (overspeed levels) that changes in accordance with an operational condition of a car. The elevator apparatus also has a position information correcting means that corrects an error in value that determines the criterion. In the ... | 06/12/2007 |
| 7195107 | Machine having pulley coupled to rotor and partially overlying stator, elevator system including machine, and drive method A machine includes a motor that includes a stator carrying a concentrated winding wound on teeth and a rotor rotatable about the stator. The rotor includes a tubular casing and permanent magnets, and a pulley coupled to the rotor. ... | 03/27/2007 |
| 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 |
| 7137485 | Procedure and apparatus for the installation of an elevator A procedure and an apparatus for plumbing and installing the shaft equipment for an elevator uses a plumbing jig. The plumbing jig is mounted in the upper part of the elevator shaft from the top floor, plumb lines are attached to the plumbing jig from the top floor ... | 11/21/2006 |
| 7134528 | Hydraulic elevator with valve for preventing discharge of pressure accumulator and method of controlling same A hydraulic elevator with a pressure accumulator includes a pump fir conveying hydraulic oil between the pressure accumulator and a hydraulic drive, such that the direction of rotation of the pump can be changed. An electrically controlled cylinder line stop valve i... | 11/14/2006 |
| 7117979 | Method for preventing an inadmissibly high speed of the load receiving means of an elevator A method for preventing an inadmissibly high speed of a load receiving unit of an elevator, including the steps of supplying information about an actual position and an actual speed of the load receiving unit in an area of an entire travel way of the load receiving ... | 10/10/2006 |
| 7021427 | Lifting apparatus and method A method for intelligent control includes an exchange of historical parameters of events for operating a system and operating a hoist where an electric motor, preferably a DC-motor, is used for lifting and lowering a lifting belt. It can take place at different spee... | 04/04/2006 |
| 6851520 | Hoisting machine having braking device with fulcrums, etc., arranged below brake wheel, and elevator system using same A hoisting machine includes a stationary part having a shank and a stationary frame integrally formed with the shank, and a motor stator provided to the stationary frame. A rotary part includes a rotary frame rotatably supported to the shank through a bearing and fa... | 02/08/2005 |
| 6651781 | Device for producing elevator car travel information A device for producing information related to a position of an elevator car in an elevator shaft includes a toothed belt having a plurality of teeth spaced along a length of the belt and mounted in an elevator shaft, an encoder mounted on the elevator car... | 11/25/2003 |
| 6564907 | Elevator having emergency stop device An elevator including a cage configured to ascend and descend along a guide rail in an elevator shaft, a drive unit configured to move the cage up and down, and an emergency stop device configured to urgently stop the cage when the cage descends at an ext... | 05/20/2003 |
| 6478117 | Elevator system having governor positioned under controller in hoistway at top floor level A machineroomless elevator system (10) has a controller (32)and a governor (38) positioned in the hoistway (12) at the top floor level (28), such that the controller (32) and the governor (38) are both positioned between the front wall (14) of the hoistwa... | 11/12/2002 |
| 6138797 | Procedure and apparatus for installing the overspeed governor of an elevator The invention relates to a procedure and an apparatus intended to be used in elevator installation to install the overspeed governor (28) for the time it takes to install the elevator. According to the invention, when the elevator is being installed, at l... | 10/31/2000 |
| 6059073 | Overspeed valve for hydraulic elevator A hydraulic elevator includes a car supported by at least one jack, and a fluid line for venting hydraulic fluid from the jack for lowering the car. An overspeed valve, disposed in the fluid line, comprises a housing having an inlet chamber and an outlet ... | 05/09/2000 |
| 5900596 | Hydraulic brake controller This invention includes a brake system for a hydraulic ram or another cylinder, that can be employed as an emergency brake for a lifting elevator. When actuated, the brake arms contact the ram circumferentially to slow and stop the falling ram. The brake ... | 05/04/1999 |
| 5419411 | Energy conservation type hydraulic elevator and speed control method of hydraulic elevator In the energy conservation type hydraulic elevator, a load carrying elevator and a balancing elevator are each provided on a respective hydraulic cylinder. The hydraulic cylinders are connected to one another by a fluid circuit. The balancing elevator is ... | 05/30/1995 |
| 5373121 | Method and apparatus for saving electrical energy in an hydraulic elevator drive A drive system for an hydraulic elevator operated at a constant output power for any load during elevator car travel in the upward direction. The maximum nominal speed in the upward direction is selected for a load which typically occurs most frequently a... | 12/13/1994 |
| 5281774 | Drive control unit for hydraulic elevator A drive control unit for a hydraulic elevator comprises: an inverter for variably driving the motor; a speed detector for detecting a rotating speed of the motor; a current detector for detecting a primary current of the motor; a speed control, unit for c... | 01/25/1994 |
| 5243154 | Apparatus for controlling a hydraulic elevator An apparatus for controlling a car of a hydraulic elevator by variable-speed-driving an electric motor directly coupled to a hydraulic pump so as to adjust the rate at which oil is supplied from the hydraulic pump to a hydraulic jack system, the apparatus... | 09/07/1993 |
| 5170021 | Hydraulic elevator control system using a plurality of solenoid valves Hydraulic elevator system with a hydraulic actuator equipped with a piston, movable in both directions, to raise and lower a cab, a tank of hydraulic fluid and a pump for fluid, a bypass shutter, to control ascent of the piston, and a down shutter to cont... | 12/08/1992 |
| 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 |
| 5040639 | Elevator valve apparatus An elevator valve apparatus for controlling the hydraulic supply flow to the hydraulic actuator and the hydraulic discharge flow from the actuator, comprises a solenoid proportional control valve device for ascending, a solenoid proportional control valve... | 08/20/1991 |
| 5022496 | Slowdown during staging of a turret stockpicker A materials handling vehicle, such as a turret stockpicker, includes a telescoping mast comprising inner and outer sections. The staging of these sections, and the stopping of the platform assembly is smoothed by monitoring the actual height of the platfo... | 06/11/1991 |
| 4991693 | Method of improving the landing of a hydraulic elevator car A method of improving the landing of a hydraulic elevator car which responds to slowdown and leveling indicia associated with each floor of a building served by the car. The method, which utilizes signals which are already generated relative to the car tr... | 02/12/1991 |
| 4938119 | Valve means The invention concerns a valve structure comprising a valve body, a chamber space disposed within the valve body, two running spindles and seats disposed to cooperate and placed within the chamber space, each running spindle enabling the aperture in the r... | 07/03/1990 |
| 4932502 | Hydraulic elevator system A hydraulic elevator system 10 having an elevator car 12 in which car velocity V and car position L are determined by detecting the quantity Q of hydraulic fluid transferred between a hydraulic cylinder and a hydraulic fluid reservoir. The car velocity V ... | 06/12/1990 |
| 4775031 | Hydraulic elevator and control method thereof A hydraulic elevator, wherein actual speed characteristics are detected so that they can be used together with desired speed characteristics in such a manner that the speed control accuracy of the car itself is improved.... | 10/04/1988 |
| 4757879 | Electrically controlled valve apparatus An electrically controlled valve apparatus includes an inlet conduit (2) for pressurized fluid, an outlet conduit (12) connected to a tank (T) and an outlet conduit (19) connected to an actuator, or cylinder (5). The valve apparatus comprises a chamber (5... | 07/19/1988 |
| 4726450 | Hydraulic elevator with dynamically programmed motor-operated valve The point at which pump out pressure exceeds load is sensed to provide a point for scheduling flow to an actuator in a hydraulic system. Flow is controlled by a stepper motor (28) that moves a flow control valve (27). The steps needed to achieve fixed flo... | 02/23/1988 |
| 4715478 | Hydraulic elevator The velocity of a cage during a time interval from the start of deceleration to the stoppage of the cage is controlled by utilizing a velocity characteristic which changes depending upon the load condition or oil temperature of a hydraulic elevator, that ... | 12/29/1987 |
| 4700748 | Pressure-referenced programmed flow control in a hydraulic valve The point at which pump out pressure exceeds load is sensed to provide a point for scheduling flow to an actuator in a hydraulic system. Flow is controlled by a stepper motor (28) that moves a flow control valve (27). The steps needed to achieve fixed flo... | 10/20/1987 |
| 4694935 | Self-adjusting control valve for elevators The invention discloses an automated hydraulic valve, for use in an elevator propulsion system. The elevator includes a car which is powered by a piston which moves within a cylinder. The automated valve controls the flow of hydraulic fluid into and out o... | 09/22/1987 |
| 4674527 | Pressure relieving linear motion valve The point at which pump out pressure exceeds load is sensed to provide a point for scheduling flow to an actuator in a hydraulic system. Flow is controlled by a stepper motor (28) that moves a flow control valve (27). The steps needed to achieve fixed flo... | 06/23/1987 |
| 4637495 | Pressure/viscosity compensated up travel for a hydraulic elevator An hydraulic elevator control system is provided including a by-pass valve connected between the supply and return of a source that normally supplies pressure fluid to the cylinder of the elevator and a setting valve that is operable by fluid supplied fro... | 01/20/1987 |
