Abstract: The threshold includes a shaped support plate of steel or the like with a sinuous profile which forms at least one longitudinal, substantially U-shaped loop between two raised portions. A profiled cover element of aluminum or the like is located on the plate and forms at least one guide for guiding the running of a door panel. This guide penetrates into the corresponding loop of the support plate. The threshold further includes fixing devices for anchoring it in the zone connecting the landing and the lift shaft or well.

Abstract: Traction sheave elevator in which the drive machinery together with the traction sheave is placed in the elevator shaft. The hoisting ropes go upward from the traction sheave. In the cross-section of the elevator shaft, the vertical projections of the elevator car, counterweight and the traction sheave of the drive machinery are separate from each other.

Abstract: The trim includes a fireproof profiled element (11) of incombustible material, preferably steel, with an L-shaped cross section having a first limb (11a) fixed to a jamb (1, 2) or transom (3) of the door frame and a second limb (11b) located adjacent the corresponding side or face (4-6) of the door opening. In front of the fireproof element (11) is a profiled cover element (14) having a channel-shaped cross section which has a first limb (14a) which bears against the jamb (1, 2) or transom (3) of the door frame and a second limb (14b) force-fitted between the second limb (11b) of the fireproof element (11) and the associated face (4-6) of the door opening. Fixing devices (15) clamp the second limbs (14b) of the cover elements (14) against the associated faces (4-6) of the door opening.

Abstract: An elevator machinery (1) with a disc type motor is mounted on one of the guide rails (6) of the elevator car or counterweight. The guide rail (6) constitutes a part adding to the mechanical strength of the elevator machinery. The vertical forces applied to the traction sheave (4) by the elevator ropes are passed to the guide rail (6) via the rolling center of a bearing. The elevator machinery is provided with a damping system to absorb vibrations and oscillations. The elevator machinery (1) of the invention is light in weight, needs only a small space when mounted and is inexpensive to manufacture.

Abstract: A reserve power system includes a reserve power machine (2) for the generation of power. The reserve power machine (2) is connected via a distribution network (4) to consumers (10,12) and elevator drives (8). The elevator drives include an elevator hoisting motor (28) and a frequency converter (26) controlling it. The elevator drives are provided with regulating devices (26, 44, 46) by means of which the speed of the elevator motor (28) is so adjusted that the power taken by the elevator drive (8) from the distribution network (4) is lower than an adjustable power limit (P.sub.A).

Abstract: A velocity-controlled elevator drive including an a.c. motor (28) driving elevator machinery regulated by means of a frequency converter (26) supplying the motor (28) with a controlled frequency and voltage. The load condition of the elevator is measured by means of a load weighing device (32) in the elevator car. A power limit (P.sub.A) is input to the elevator machinery as a reference value and the speed reference (38) given to the frequency converter is determined on the basis of the power limit (P.sub.A) and the load condition.

Abstract: Push button arrangement for an elevator including a push button (7) with a mounting element (1), a mounting base (10), a cover plate (17) and a circuit card (3). The push button (7) is attached to the mounting element (1) using double-sided tape. The push button (7) is provided with an opening (8) for a call acknowledgement light. The mounting element (1) is fitted by its legs (2) in holes (19) provided in the circuit card (3). The circuit card (3) is provided with membrane switches (4) and attached to the mounting base (10) by gluing so that its lugs engage holes (11) in the mounting base (10). The cover plate (17) covers the push button panel.

Abstract: In a display (202) comprised in an elevator system, more than one floor symbol (205) but less than all the floor symbols corresponding to different floors in the elevator system are highlighted at a time. At least the floor symbol corresponding to the current position and that corresponding to the next floor in the travelling direction is highlighted. The display is preferably so controlled that it scrolls the floor symbols (205) with respect to the car symbol (203). When the elevator car is at a given floor, the floor symbol corresponding to such floor coincides with the car symbol, and when the elevator car moves away from the floor, the floor symbol ceases to coincide with that car symbol, and as the car comes to the next floor, the corresponding floor symbol coincides with that car symbol.

Abstract: According to the invention, at least one end of the elevator ropes (8) is fixed to a guide rail (4,7) of the elevator. According to an embodiment of the invention, the whole elevator is so suspended by its ropes (8) that all vertical forces are transmitted by the guide rails (4 . . . 7) to the bottom (27) of the shaft (1). The invention provides the advantages that the elevator is easy to install and that the ical forces are transmitted by the guide rails (4 . . . 7) to the bottom (27) of the shaft (1), permitting a lighter construction of shaft walls.

Abstract: The invention relates to a procedure for stopping an elevator car at a landing, in which procedure the travelling velocity and position of the elevator in the shaft are measured and a distance from the landing, i.e. a deceleration point at which deceleration is started, is determined for one travelling velocity, i.e. a reference velocity. According to the invention, the deceleration point is changed in proportion to the difference between the measured travelling velocity and the reference velocity.

Abstract: The invention relates to a method and an apparatus for braking a synchronous motor (2) magnetized with permanent magnets. According to the invention, there is connected to the input connectors (38,40,42) of the synchronous motor a non-linear braking resistor (60) by means of which the stator windings of the synchronous motor (2) are closed.

Abstract: The elevator machinery (26) comprises a motor (6) and its traction sheave (18). The rotor (17) is disc-shaped and air gap (ag) between it and the stator (14) can turn a plane which is substantially perpendicular to the shaft (13). The stator (14) forms a ringlike sector (28) and is placed in an outer part and the traction sheave (18) is fixed to the rotor, between the stator (14) and the shaft (13). The diameter of the traction sheave is smaller than that of the rotor. The structure of the motor allows the use of traction sheaves (18) of different diameters (2*Rv) with rotors (17) of the same diameter. The motor is very flat. In other words, its length in the axial direction is small.

Abstract: Traction sheave elevator in which the drive machinery together with the traction sheave is placed in an elevator shaft provided with guide rails for the elevator care and the counterweight. The hoisting ropes go upward from the traction sheave. The elevator comprises two diverting pulleys mounted on an upper part of one of the guide rails, the first one of the diverting pulleys carrying a hoisting rope portion going from the traction sheave to the elevator car while the second one carries a hoisting rope portion going from the traction sheave to the counterweight.

Abstract: Device (100) for rotating an elevator motor during an emergency situation, such as a power failure, comprising a d.c. supply (4) and a rotary switch (8) used as a switching device for supplying a d.c. voltage into the windings (R-S, R-T, S-T) of the elevator motor (1). The d.c. voltage (DCC+, DCC-) controlled by the rotary switch is fed by turns into each winding (R-S, R-T, S-T). In addition, the device comprises a switch (6) used to supply a voltage to the brake (3) and to short-circuit the windings.

Abstract: Damper winding (13) for an elevator motor provided with permanent magnets (14). The damper winding consists of frames (16) surrounding each permanent magnet (14). Each one of the frames is electrically connected to the adjacent frame (16) or the frames are integrated together. The damper winding (13) can be used as a jig for positioning the magnets when these are being fixed to the rotor disc (6). In one of the embodiments, the magnets and damper winding are fixed to the rotor disc by a form-fit interlocking arrangement.

Abstract: A procedure for determining the position of an elevator car in which the code data contained in code units mounted in the building is read by means of a code data detector unit (4) in such manner that a code unit containing floor data and door zone data is mounted essentially close to the threshold of the landing door on each floor and that the detector unit reading the floor data and door data is mounted essentially close to the threshold of the car.

Abstract: A door sill arrangement for an elevator has a profiled sill element with upper and lower grooves. First and second door panels of the elevator are provided with first and second sliding guides, respectively. The first and second sliding guides move in the upper and lower grooves of the profiled sill element when the doors are opened. Upper and lower plastic bars are attached to the first and second sliding guides, respectively. The upper and lower plastic bars are pulled by the front sliding guides, when the door panels are opened. The upper and lower plastic bars slide along through the upper and lower grooves and substantially fill or cover the grooves which would otherwise be exposed when the door panels are opened.

Abstract: The invention relates to a waiting time display (5) on a landing. The waiting time display (5) is active from the moment when the landing call button (6) is pressed to the moment when the call is reset. The waiting time display (5) receives from the group control unit (1) information about the order of magnitude of the waiting time and the rate of diminution of the order of magnitude of the waiting time, which is used by the waiting time display (5) to decrease the waiting time displayed.

Abstract: The invention relates to a procedure and an apparatus for analyzing elevator functions and detecting deviating functions. By monitoring signals associated with traffic events in the elevator system, an analyzer connected to the elevator learns the normal operation of each elevator independently. Signals occurring during operation are compared with the information thus acquired and a failure alarm is produced or the information is altered to make it accord with the new, changed situation.

Abstract: An elevator motor (2) employing permanent magnets (30) attached in a circle on the surface (36) of the rotor disc (12). The rotor disc (12) forms part of both the magnetic circuit and the supporting structure of the rotor (13). The permanent magnets (30) are placed in a separate cavity formed in the stator disc and having one side open, the cavity also housing the stator windings (17). The outer cavity wall directed towards the rotor disc (12) is provided with a sealing member to close the cavity.