Abstract: An escalator with a high speed inclined section in which a position of a link connection point is determined by the following equations: XM=X1+L1 cos {&bgr;−&ggr;}, and YM=Y1+L1 sin {&bgr;−&ggr;} (where &bgr;=tan−1{(Y1−Y2)/(X1−X2)}; &ggr;=cos−1{(L12−L22+W2)/2L1W}; W={square root over ( )}{(X1−X2)+(Y1−Y2)}; XM: horizontal coordinate of the link connection point; YM: vertical coordinate of the link connection point; L1: a distance from axis of an upper-step-side step link roller shaft to the link connection point; and L2: a distance from axis of a lower-step-side step link roller shaft to the link connection point).

Abstract: Disclosed is 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 is equipped with a current amplification device and a plurality of diodes. The plurality of diodes selectively output signals from the current amplification device to the pair of actuators.

Abstract: In an elevator system, a first transceiver located at a fixed portion in an elevator shaft and a second transceiver provided at an elevator cage communicate by millimeter waves. The elevator system includes a first portion positioned in an elevator shaft, a second portion positioned in the elevator shaft, vertically moving relative to the first portion, a first transceiver located at the first portion, and a second transceiver located at the second portion.

Abstract: The present invention is to provide an elevator system, in which data communication between a first transceiver provided at a fixed portion in an elevator shaft and a second transceiver provided at an elevator cage is made by means of a millimeter wave in a reliable manner.

Abstract: In a drum winding unit, a cylindrical drum winding a wire is supported by paired supports fixed to a base structure so the drum freely rotates about a central axis of the drum. A drive unit for rotating the drum is disposed inside the drum. The drive unit is insertable into and extractable from the drum while keeping the drum and the supports in their operating positions.

Abstract: In an elevator, guide devices are attached to the elevator and include a guide lever driven in a plane; a guide element attached to the guide lever; a stationary actuator part fixed to a support member; and a moving actuator part fixed to the guide lever, wherein a first part of the moving actuator part and the stationary section is a magnet that generates a magnetic field crossing a driving direction of the moving actuator part, a second part of the moving actuator part and the stationary section is a coil wound around a bobbin which is arranged so that it is influenced by the magnetic field and drives the movable section of the actuator in the driving direction of the movable section of the actuator. The magnetic field is generated by an electric current flowing in the coil when the elevator car is vibrated.

Abstract: An elevator speed governor includes a motion converter for converting a traveling speed of a traveling section of an elevator into a rotational speed; an overspeed sensor for sensing a rotational speed not less than a predetermined speed; and an overspeed detector for detecting an overspeed of the traveling section to stop the traveling section, wherein the motion converter includes permanent magnets supported by a rotating shaft of the motion converter so that the magnets rotate with the rotating shaft. An eddy current is generated according to the traveling speed in an electric induction conductor arranged in a traveling direction of the traveling section of the elevator. A rotational torque is generated in the rotating shaft by interaction between the eddy current and the magnetic flux produced by the permanent magnets.

Abstract: A power supplying device for a single hoistway, multiple car elevator, preventing the cable of one car from making contact with another car, without the need to increase the size of the hoistway. This power supplying device includes a power supplying member disposed at the top of a hoistway for supplying power to each of the elevator cars; power receiving members on each of the elevator cars for receiving power from the power supplying member; and cables for conducting the power from the power supplying member to each of the power receiving members. In this power supplying device, one end of each of the cables is fixed to the side of a corresponding elevator car, and each of the cables is disposed along the side of each of the cars in a gap between an inner wall of the hoistway and the side of each of the elevator cars opposed to the inner wall.

Abstract: In a drum winding unit 10, a cylindrical drum 18 with a wire 20 wound is supported by paired supports 14 and 16 fixed to a base structure 12 such that the drum 18 freely rotates about a central axis of the drum 18. A drive unit 32 for rotating the drum 18 is disposed inside the drum 18. The unit 10 is designed so as to insert the drive unit 32 into and extract it from the drum 18 while keeping the drum 18 and the supports 14 and 16 as they are at their operating positions.

Abstract: In a method for checking and adjusting an elevator governor which includes an emergency stop switch 20a) for tuning off the power supply of an elevator hoist to brake it; first and second fixed conductive guide rails (18) extending vertically the entire length of an elevator hoistway; an emergency brake (31) attached to an elevator car assembly containing an elevator car and a balance weight balancing therewith, for grabbing the first fixed conductive guide rail (18) to brake the elevator car assembly by friction; a magnet assembly (16) mounted on the elevator car such that it is displaced by an eddy current induced based on the relative speed between the second fixed conductive guide rail and the magnet assembly disposed opposite thereto; and an emergency stop mechanism for actuating the emergency brake (31) upon detecting that the displacement of the magnet assembly (16) has reached displacement corresponding to a critical speed critical; a pseudo speed generator, which generates speed by straight-line moti

Abstract: A safety apparatus for an elevator of the present invention includes an emergency stopping mechanism for generating a high frictional force to brake the elevator, a driving apparatus for operating the emergency stopping mechanism, a cam latch mechanism for releasing the driving apparatus when the speed of movement of the elevator reaches a critical speed, and a governor for activating the cam latch mechanism

Abstract: An elevator overspeed protection apparatus includes a brake apparatus which makes use of eddy currents. The brake apparatus includes a magnetic spring placed on a car in the proximity of a pickup of the elevator overspeed protection apparatus such that, when an arm of the brake apparatus is in a horizontal condition, a displacement of the pickup is prevented with a strong attracting force by the magnetic spring, but when the arm is inclined obliquely, the attracting force of the magnetic spring is prevented from acting upon the pickup. Due to the construction, the brake apparatus operates stably and with certainty and has an increased life.

Abstract: A method and apparatus for detecting the machining status of a laser beam machining device, having a multi-mirror resonator for generating a machining beam, which utilizes the secondary light generated by the machining operation and returned from the workpiece surface into the resonator for control of the machining operation. The oscillator and accompanying components, such as beam dividing mirrors and splitters, are operative to separate the secondary light from the laser beam within the resonator and direct the two beams separately to detectors located outside of the resonator. Alternatively, the secondary light and laser beam may be directed to the outside together where they are separated by an integrating sphere for detection.

Abstract: An assembly for supporting a magnetic head to float relative to a magnetic disk, comprises a load arm extending substantially tangentially of a magnetic disk and moved substantially radially of the magnetic disk, the load arm having a proximal end, and a distal end and including a spring portion at its proximal end, a gimbal secured to the distal end of the load arm and including a pivot, the load arm including a contact point at its distal end to contact with the pivot, and a magnetic head slider secured to the gimbal so as to pitch and roll about the pivot with movement of the magnetic disk. The magnetic head slider is adapted to support a magnetic head and is urged toward the magnetic disk under the influence of the spring portion of the load arm. The load arm has a shear center at the contact point.

Abstract: A head positioning apparatus for a disc unit which moves a carriage having a movable portion by driving motors constituted by coils and magnets, wherein driving power distribution of the driving motors is variable, so that the acting points of the driving forces of the driving motors can be variably set at any position to position the acting points of driving forces of the driving motors on a centroidal axis of the movable portion.

Abstract: A carriage assembly has a carriage provided on both sides with voice coils, a magnet assembly surrounding the voice coils and adapted for causing the carriage to move in the radial direction of a disk, and guide rails for guiding the carriage in the radial direction of the disk. The carriage is provided on a lower portion thereof with first rollers for engagement with the guide rails and at its upper portion thereof with second rollers which co-operate with a biasing members in preventing the carriage from moving upward. Either the guide rails or the first rollers are provided with grooves which prevent the first rollers from moving in the tangential directions of the guide rails. Since the movement of the first rollers in the tangential directions of the guide rail is prevented, it is possible to locate the carriage with a high degree of precision with respect to the disk.

Abstract: Provided is a reflector oscillating apparatus in which the positions of a reflector and a compensating plate are detected so as to perform positioning with a high degree of positional accuracy (closed-loop control). Further, since the reflector and the compensating plate are driven by a couple of forces, no reaction forces by drive forces are applied to a rotary shaft and a support section, and accordingly, it is possible to enhance the positioning accuracy and to realize a short transient time and a large amplitude. Further, the magnetic circuit is commonly used so that the dimensions of a motor, that is, the height thereof in particular, can be reduced, irrespective of a large drive force. Accordingly, the reflector oscillating apparatus can be greatly miniaturized. Further, by commonly using the magnetic circuit, the impedance of the coil can be reduced, thereby it is possible to drive the apparatus at a high speed with a low drive voltage.

Abstract: An in-line type magnetic head supporting apparatus of the present invention including a first fixed part secured to a magnetic head slider mounted with a magnetic head in a floatable manner, a second fixed part secured to a load beam which presses the magnetic head slider toward the magnetic disc, and a gimbal mechanism comprising a spring part connecting the first and second fixed parts and enabling the pitching and rolling movements of the magnetic head slider in the radial direction of the magnetic disc, and further includes a restricting mechanism for preventing the sideslip of a pivot formed on the first fixed part as a fulcrum for pitching and rolling movements. Furthermore, in order to increase the flexural rigidity of the spring part of the gimbal mechanism in the radial direction, its lateral length is enlarged and slits are formed in the spring part to reduce the torsional rigidity thereby to prevent the inteference of the pitching and rolling movements.

Abstract: An object lens head assembly for use with an optical recording disc comprises an information conversion apparatus for receiving an electrical signal bearing information to be written to the disc and outputting beams of light bearing the information to be written to the disc, and for receiving a beam of light bearing information read from the disc and outputting an electrical signal bearing the information read from the disc; a plurality of object lenses disposed along a diametrical direction of the disc for directing light onto a plurality of portions of the disc, respectively; a plurality of reflective mirrors for reflecting the light beam output from the information conversion apparatus toward a selected one of the object lenses; a linear motor for moving the object lenses along the diametrical direction of the disc; and a light beam shifting mechanism for shifting the light beam so that the light beam impinges upon a selected one of the reflective mirrors.

Abstract: A two-dimensional image pick-up device using a one-dimensional image pick-up element which is useful as an image reader. Drive coil type linear motors for driving an element moving carriage in the subscanning direction of the one-dimensional image pick-up element are disposed on both sides of the element moving carriage, enabling the deivce to be economically small-sized as a whole.