Abstract: An anti-vibration device is secured to a vibration source and a vibration transmission portion to inhibit transmission of vibration, and includes a first elastically deformed portion, a second elastically deformed portion and a third elastically deformed portion. The first elastically deformed portion is a plate having a thickness in a first thickness direction and vibrates in the first thickness direction to configure a path for the vibration to be transmitted from the vibration source to the vibration transmission portion. The second elastically deformed portion is a plate having a thickness in a second thickness direction intersecting the first thickness direction and vibrates in the second thickness direction to configure the path. The third elastically deformed portion is a plate having a thickness in a third thickness direction intersecting the first thickness direction and the second thickness direction and vibrates in the third thickness direction to configure the path.

Abstract: In an elevator apparatus, a car is suspended by a suspending device. A braking apparatus applies a braking force to the car by the suspending device. An excessive speed detection level that changes in response to car position is set in an excessive speed monitoring portion. The excessive speed monitoring portion makes the braking apparatus perform a braking operation when car speed reaches the excessive speed detection level. An anomalous acceleration detecting mechanism operates a safety device if acceleration that exceeds a preset set value arises in the car.

Abstract: In an elevator apparatus, a car is suspended by a suspending means. The car is raised and lowered by a driving apparatus by means of the suspending means. The car is braked by a braking apparatus. An abnormal acceleration detecting mechanism operates the braking apparatus to stop the car if acceleration that exceeds a preset set value arises in the car.

Abstract: In an elevator apparatus, a car is suspended by a suspending means. A braking apparatus applies a braking force to the car by means of the suspending means. An excessive speed detection level that changes in response to car position is set in an excessive speed monitoring portion. The excessive speed monitoring portion makes the braking apparatus perform a braking operation when car speed reaches the excessive speed detection level. An anomalous acceleration detecting mechanism operates a safety device if acceleration that exceeds a preset set value arises in the car.

Abstract: In an elevator apparatus, a car is suspended by a suspending means. The car is raised and lowered by a driving apparatus by means of the suspending means. The car is braked by a braking apparatus. An abnormal acceleration detecting mechanism operates the braking apparatus to stop the car if acceleration that exceeds a preset set value arises in the car.

Abstract: In an elevator apparatus, a main rope suspending a car and a balance weight is looped around a traction sheave and a driven sheave of a traction machine. A driving-side speed detecting portion for detecting rotational speed of the traction sheave and a driven-side speed detecting portion for detecting rotational speed of the driven sheave are electrically connected to an operation control device. The operation control device includes a determination portion determining presence or absence of an abnormality in an elevator by calculating speed difference between rotational speeds of the traction sheave and comparing the speed difference to a fixed reference value, set in advance, and a control portion for controlling the operation of the elevator based on information from the determination portion.

Abstract: In an elevator apparatus, a main rope suspending a car and a balance weight is looped around a traction sheave and a driven sheave of a traction machine. A driving-side speed detecting portion for detecting rotational speed of the traction sheave and a driven-side speed detecting portion for detecting rotational speed of the driven sheave are electrically connected to an operation control device. The operation control device includes a determination portion determining presence or absence of an abnormality in an elevator by calculating speed difference between rotational speeds of the traction sheave and the driven sheave and comparing the speed difference to a fixed reference value, set in advance, and a control portion for controlling the operation of the elevator based on information from the determination portion.

Abstract: An elevator system and a speed governor detecting first over-speeds of different values set for different moving directions of an elevator car. The speed governor includes a fly weight speed governing mechanism on a sheave on which a speed governing rope is wound and operates in both ascending and descending modes of the elevator car, and a fly ball speed governing mechanism coupled with a horizontal shaft of the sheave via a clutch mechanism. The clutch mechanism transmits the torque of the sheave to a second shaft of the fly ball speed governing mechanism when the sheave rotates in a forward direction, and disengages the transmission of the torque to the second shaft when the sheave rotates in a reverse direction.

Abstract: An elevator door control apparatus according to the present invention includes a driver for driving an elevator door; a torque detector, connected to the driver, for detecting torque command values during driving and the maximum torque command value; a standard door memory; an optimal door speed calculator for calculating an optimal door speed from the standard door values stored in memory and from the torque command values detected by the torque detector; and a door speed command for outputting a speed command signal to the driver, based on the door speed calculated by the optimal door speed calculator.

Abstract: The invention concerns a door structure for an elevator which allows a service engineer to easily adjust a gap between a vibration damping engaging mechanism on a cage sliding door, the width of which varies through the opening/closing operation of the cage sliding door, and each of vibration damping members spaced predetermined distances apart from both sides of the vibration damping engaging mechanism. In the door structure, the vibration damping engaging mechanism includes movable engaging vanes spaced predetermined distances apart from the vibration damping members. The movable engaging vanes are operated such that when the sliding door is present near to the full close and open positions, the spaces are larger than those when the sliding door is present in the middle of the opening/closing stroke of the sliding door.

Abstract: The elevator landing door apparatus is provided with a door for opening and closing the doorway at an elevator landing zone, a rail for guiding the rollers of a hanger plate installed in an upright position in the upper part of the door just defined, and a sill for guiding a door shoe set in the lower part of the door laid out in the lower part of the doorway defined above. The elevator landing door apparatus is characterized in that a plate is set up in an upright position on the upper frame of three-side frames in the doorway defined above and a closure plate is set up in the upper part of the door defined above and forms an overlapping construction together with the plate when the door is shut. This closure plate is fitted out with an expansive material which expands by the effect of heat and thereby the clearance between the plate and the closure plate.

Abstract: An apparatus operable on each elevator platform for opening or closing doors wherein the apparatus includes a pair of doors for opening or closing an inlet/outlet on the elevator platform, a rail for guiding the rolling movement of rollers carried by a hanger plate standing upright on the upper surface of each door and a door-sill arranged below said inlet/outlet for guiding the slidable movement of a door shoe at the lower end of each door. Each door is essentially composed of a door main body having a vertically extending reinforcement member for supporting the dead weight of each door and a thermal insulating panel fixedly secured to the door main body on the elevator platform side, the thermally insulating panel being filled with a thermal insulating material, and a decorative plate is adhesively secured to the front surface of the thermal insulating panel on the elevator platform side.

Abstract: An aluminum alloy support for a lithographic printing plate, comprising a cold rolled plate of aluminum alloy comprising, in % by weight:98.0% or more Al;Fe in an amount of from 0.15 to 1.2% as an alloying element; andimpurities, each of which is present in an amount of from 0.0% but less than or equal to 0.15%, wherein the cold rolled plate has a distribution of Al--Fe and Al--Fe--Si based intermetallic compounds formed from the alloy, having grain sizes of greater than 0 microns but less than or equal to 3 microns, which are positioned directly under an outer surface of the cold rolled plate and wherein the surface of the cold rolled plate is roughened by etching or electrochemical etching and anodically oxidized.

Abstract: An aluminum alloy, a lithographic printing plate support, a lithographic printing plate using the aluminum alloy are disclosed. The aluminum alloy is comprised of aluminum containing 0.20 to 1.0% Fe and 0.005 to 0.1% of elements selected from the group consisting of Sn, In, Ga and Zn. The support composed by the aluminum alloy can be chemically etched with an acid and/or an alkali solution and after undergoing etching the surface of the support is uniformly etched. The uniformly etched surface may be provided with a subbing layer or an anode oxidation film. The support is coated with a light-sensitive layer and utilized as a lithographic printing plate.

Abstract: A lithographic printing plate support and a process for producing it are disclosed. The plate is produced by providing an aluminum alloy material which is comprised of 0.20 to 1.0% Fe, 0.005 to 0.1% of an element selected from the group consisting of Sn, In, Ga and Zn and the remainder being aluminum. The alloy may further contain 0.1 to 2% Cu. After providing the aluminum material either or both of its surfaces are subjected to a chemical etching treatment in order to provide a uniform and dense grain structure on the surface forming primary pits in the surface having a particularly defined average size. The surface is then subjected to electrochemical etching treatment in an acidic electrolytic solution in order to provide secondary pits on the surface also having a particularly defined average size. The support base may be further treated to provide in additional coating thereon or directly coated with a light-sensitive layer in order to provide a light-sensitive lithographic printing plate.

Abstract: A colored oxide film on the surface of aluminium or an alloy thereof can be formed by anodizing at a D.C. voltage in an electrolyte based on sulfuric acid, followed by alternating current electrolysis at an A.C. voltage which is lower than the D.C. voltage.In order to increase the degree of coloring of the colored oxide film, after the alternating current electrolysis the A.C. voltage is raised to a higher level but lower than the D.C. voltage, followed by dropping the voltage down to a level of the A.C. voltage or thereabout.