EP0032073B1 - Installation de sécurité pour ascenseurs - Google Patents

Installation de sécurité pour ascenseurs Download PDF

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Publication number
EP0032073B1
EP0032073B1 EP80401735A EP80401735A EP0032073B1 EP 0032073 B1 EP0032073 B1 EP 0032073B1 EP 80401735 A EP80401735 A EP 80401735A EP 80401735 A EP80401735 A EP 80401735A EP 0032073 B1 EP0032073 B1 EP 0032073B1
Authority
EP
European Patent Office
Prior art keywords
cabin
motor
winch
movable element
switch
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP80401735A
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German (de)
English (en)
French (fr)
Other versions
EP0032073A2 (fr
EP0032073A3 (en
Inventor
Antoine Serina
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Publication of EP0032073A2 publication Critical patent/EP0032073A2/fr
Publication of EP0032073A3 publication Critical patent/EP0032073A3/fr
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Publication of EP0032073B1 publication Critical patent/EP0032073B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • B66B5/027—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions to permit passengers to leave an elevator car in case of failure, e.g. moving the car to a reference floor or unlocking the door

Definitions

  • the present invention relates to a safety installation for elevators.
  • the elevator installations essentially comprise a cabin which moves vertically along fixed guides, a winch which is mounted at the top of the building and which is controlled by an electric motor as well as carrying cables, one end of which is fixed to the cabin and the other to a vertically movable counterweight along rails, these cables being driven by winch pulleys.
  • the cabin can stop between two floors and the occupants are locked in until specialists come to manually control the winch to bring the cabin to a landing door through which people can go out.
  • This system does not offer any security, particularly in the event that the electrical current is restored while the cabin is moving by its own weight.
  • Safety operation therefore involves the voluntary intervention of at least one passenger in the cabin and supposes that this passenger knows the existence of a safety system and how to use it.
  • Patent FR-A-1,336,431 also provides for deliberate action by passengers in the cabin on auxiliary motor elements which must operate in place of the usual winch.
  • One of the aims of the present invention is to provide a safety installation which overcomes the various drawbacks of the prior devices.
  • an installation according to a first embodiment of the invention comprises, as is known per se, vertical guides 100 and 101 made, for example, in the form of tubes and with which runners 102, of all known types, cooperate with an elevator car 103.
  • the installation also includes a winch 104 driven by an electric motor 105 with the interposition of mechanisms of any known type such as reduction gear, clutch, etc.
  • the motor 105 is controlled by a set of control buttons 106 located inside the cabin 103 and making it possible to select the floor to which one wants to go, as is well known.
  • a drum 110 which axis 111 is associated on the one hand with a centrifugal retarder 112 via a kinematic link 113 and on the other hand with an electric motor 114 via a kinematic link 115.
  • the various electrical components of the installation such as the winch motor 105, the control buttons 106, the cabin lighting as well as its various auxiliaries such as safety bell, etc. are supplied from a electric current source 117 represented here in a symbolic manner and comprising only two lines 200 and 300 respectively.
  • a electric current source 117 represented here in a symbolic manner and comprising only two lines 200 and 300 respectively.
  • such an electrical installation can be of a different type and in particular of three-phase type with ground wires etc. ...
  • Line 200 leads directly to a pole of an electromagnet 118 and by a line 201 to a pole of another electromagnet 119.
  • the line 200 has as many extensions 201 as there are electromagnets to be excited in addition to the first, 118.
  • branches 202 and 203 respectively, the line 200 is directly connected to one of the poles of the electric motor 105 on the one hand and to one of the poles of the electric motor 114 on the other hand.
  • a bypass 204 connects the line 200 to one of the poles of a control electromagnet of any known type 120 capable of actuating two contacts as will be described later.
  • a switch 121 interposed between the source 117 and the motor 105 of the winch 104, is of the two-part type, one of which 121 a is integral with the moving assembly 108 and the other 121b of the cabin 103, the switch 121 being closed when parts 121 a and 121 b cooperate and open when parts 121 a and 121b are separated.
  • a line 302 leads to a relay box 122 in which there are two contactors 303 and 304 respectively.
  • Line 302 arrives at one of the poles of contactor 303 while at the other pole of said contactor 303 is connected a line 305 leading to the electric motor 105 of the winch 104.
  • a line 306 connected directly to the line 300 while at the other pole, a line 307 ends at one of the poles of a switch preferably with a push button 308 of which the other pole receives a line 309 leading directly to another pole of the electric motor 105 and which receives a bypass 310 ending in one of the poles of the electric motor 114.
  • Contact strips 311 1 and 312 respectively of the contactor 303 and 304, are integral with a rod 123 fixed to the core 124 of the electromagnet 120.
  • One of the poles of the electromagnet 120 is connected by line 204 to line 200, as said previously, while its other pole is connected to line 302 by a branch segment 313.
  • the installation includes means (306-304-307-308-309 for controlling the descent of the mobile assembly 108 with a view to securing it with the cabin 103 after the fault has been repaired or after the supply has been restored.
  • the installation comprises an electric motor 114 for controlling the rewinding of the connection cable (s) 116 on the drum 110 when the movable assembly 108 is lowered with a view to securing the cabin 103 with the latter, after the fault has been repaired or the electrical supply has been restored.
  • the installation further comprises an electrical supply circuit 309 of the winch motor 105 when the cabin 103 and the moving element 108 are uncoupled, a switch 308 for simultaneously closing the circuit of the electric motor 114 for rewinding (or) connecting cable (s) 116 on the drum 110 and the electric circuit of the winch motor 105, but only in the direction of descent of the moving element 108 and a limit switch 304 to open the circuit of the switch 308 when the moving element 108 and the cabin 103 have been re-coupled.
  • one of the poles of the source 117 is connected directly by lines 200, 201, 202 and 203 to one of the poles of the motor 105 of the winch 104, to one poles of the electromagnet, respectively of each electromagnet 118-119 and to one of the poles of the motor 114 (when the latter is present as in FIGS.
  • the relay box 122 comprises two contactors 303 and 304 subjected to a member (here the electromagnet 120, its core 124 and the rod 123) sensitive to the effective passage of current so that the first contactor 303 is closed when the current flows while the second contactor 304 is open and, conversely, the first contactor 303 open and the second contactor 304 closed when the current is interrupted, the first contactor 303 being placed after the switch 121 itself inserted between the source 117 and the motor 105 of the winch 104 and before said motor 105 while the second contactor 304 is placed between the line 300 connecting the source 117 to one of the parts 121 a of the switch 121 and to a first pole of a contactor called "reset" preferably with push-button 308, the second pole of which is connected by a line 309 to a circuit of the motor 105 of the winch 104 established to cause the latter to rotate in the only direction corresponding to the unwinding of the carrying cables 107.
  • a member here the electromag
  • the drum 110 placed on the roof 109 of the cabin 103 and which receives at least one connecting cable 116 is associated with an electric motor 114, one pole of which is connected directly by a line 203 to one of the poles of the source 117 and the other pole of which is connected by a line 310 to line 309 which extends from the second pole of the reset switch 308 to the circuit of the motor 105 of the winch 104 established to cause the rotation of the latter in the direction corresponding to the course of the carrying cables 107, said motor 114 associated with the drum 110 having a supply circuit established to cause the rotation of the drum 110 in the only direction corresponding to the winding of the connecting cable or cables 116, the motor 105 of the winch 104 and the drum 114 motor 114 being further synchronized.
  • the moving element 108 is integral with the cabin 103 by means which will be described below so that the switch 121 is closed since its two parts 121 a and 1216 are in contact with one another.
  • the current arriving through line 300 passes through switch 121 and feeds line 307 to the other poles of the electromagnets 118 and line 302 to the relay box 122.
  • the electromagnet 120 is excited since it receives current on the one hand by the line 204 and on the other hand by the bypass 313 so that the core 124 is in the position of attraction according to which the strip 311 closes the first contactor 303 while the strip 312 is remote from the poles of the second contactor 304 which is thus opened.
  • the closed position of the contactor 303 has the consequence that the motor 105 of the winch 104 can be supplied with power when one of the stage selection buttons of the assembly 106 is depicted, here on the line 305 but which could also be inserted on line 202.
  • the moving element 108 comprises vertical tubes 130 and 131 in which can also be engaged in free sliding central cylindrical cores 132 and 133 secured to supports 134 and 135 fixed on the roof 109 of the cabin 103.
  • the levers 141 and 142 are provided with solid hooks 143 and 144 capable of being engaged in notches 145 and 146 provided on the supports 134 and 135 integral with the roof 109 of the cabin 103.
  • the levers 141 and 142 are provided with a hooking member 147 and 148 for a powerful spring 149 and 150 which is stretched between this hooking member respectively 147-148 and similar members fixed on the tubes. 130 and 131 of the moving crew 108.
  • the electromagnets 118 and 119 are fixed to the tubes 130 and 131 so that their plunger core 118a and 119a respectively is placed opposite the levers 141 and 142, as close as possible to their upper end.
  • the springs 149 and 150 are placed in such a way that they constantly exert a force on the levers 141 and 142 in order to bring their upper end closer to the tubes 130 and 131, which has the consequence of removing the hooks 145 and 146 l ' one of the other, that is to say, to urge them towards their position of separation from the notches 145 and 146, which corresponds to the release of the cabin 103 relative to the mobile assembly 108.
  • the electromagnets 118 and 119 when they are excited, have their cores 118a and 119a in the extraction position and these electromagnets 118 and 119 have been established at a power such that their force is greater than that, antagonist, springs 149 and 150.
  • the cores 118a and 119a are energetically recalled, by any known means, to their retracted position so that under the effect of the springs 149 and 159 the levers 141 and 142 pivot around the axes 139 and 140 and that the hooks 143 and 144 come out of the notches 145 and 146.
  • the cabin 103 is no longer attached to the moving assembly 108 by hooks 143 and 144, said cabin 103 continues to descend while the crew 108 remains blocked because the engine 105 of the winch 104 has stopped, current.
  • the descent of the cabin 103 is braked by the centrifugal device 112 so that the descent speed remains reasonable and is done practically smoothly for the passengers of the cabin 103 who can practically not notice the interruption of current only by switching off the lights since the cabin release operation is done fully automatically and without any passenger intervention.
  • the passengers of cabin 103 can then use the door which is placed opposite cabin 103 and which, if necessary, is opened manually by means of a key, as is known per se.
  • the interruption of the electric current also had the effect of suppressing the excitation of the electromagnet 120 whose core 124 is automatically in the extraction position so that the rod 123 has pushed the bars 311 and 312 so that the first separated the poles of the contactor 303 while the second closed the contactor 304 by bringing the poles of said contactor into contact.
  • FIG. 2 represents a position of the installation corresponding to the interruption of electric current and it is in this situation that the operations following the return of the electric current supply take place.
  • the position of the electromagnet 120 in the case where it is not supplied corresponds to the opening of the contactor 303 and, simultaneously, to the closing of the contactor 304.
  • line 306 directly connected to line 300, carries current through the closed contactor 304 to one of the poles of the reset contactor 308, the other of which is connected by lines 309 and 310 to the motor 105 of the winch 104 and to the motor 114 of the drum 110.
  • line 309 leads to a circuit which is organized in such a way that the motor 105 can only rotate in the direction of the unwinding of the carrying cables 107 which corresponds to the descent of the mobile assembly 108 to meet the cabin 103 remained stationary at the bottom of the installation.
  • the simultaneous rotation of the motor 114 has the effect of causing the rotation of the drum 110 in the only direction corresponding to the winding of the connecting cables 116, the synchronization between the motors 105 and 114 having the effect that the connecting cables 116 are wind on the drum 110 as the movable rack 108 approaches the cabin 103.
  • This movement can be interrupted at any time when the pressure on the reset switch push-button 308 is released, but if one continues to act, the reconciliation of the moving element 108 and the cabin 103 done until returning to the original position, as will be explained below.
  • the movable assembly 108 comprises a central part (formed here of part 136, tubes 130, 131 and supports 137, 138) which is provided with lateral arms 151 and 152 whose ends 153 and 154 cooperate with the fixed guides 100 and 101 and which are preferably adjustable in length to be adapted to different spacings of the guides 100 and 101 depending on the pre-existing installations.
  • the central part (composed as said above) of the moving element 108 is provided with vertical guides 130 and 131 with which counter-parts 132 and 133 must cooperate integral with the cabin 103 so that the relative position of said moving element 108 and of said cabin 103 is suitably determined laterally when the guides 130 and 131 and their counterparts 132 and 133 cooperate.
  • the current passing through the line 302 will reach the electromagnet 120 which, by changing position, causes the closing of the contactor 303 and the opening of the contactor 304 at the same time, so that even if we continue with inadvertent pressing of the reset switch 308 push-button, the power supply to the motors 105 and 114 is automatically interrupted and the moving element 108 is stopped.
  • the installation then automatically returned to the situation shown in FIG. 1 and the elevator can again be operated by pressing one of the floor selection buttons of the assembly 106.
  • the installation is returned to its original state for normal operation without the cabin 103 being set in motion so that no accident can occur, especially if care has been taken, as shown in drawing, to place the reset switch 308 in the cabin 103 itself so that the person in charge of this function easily realizes if the situation is normal vis-à-vis the landing door in particular and if nothing is opposed upon restarting the installation.
  • the drum 110-centrifugal brake 112-motor 114 we have shown an embodiment of the drum 110-centrifugal brake 112-motor 114.
  • the axis 1 1 has a grooved portion 111a a and its free end is integral with a flange 111 b intended to be coupled with a flange 114a wedged on the output shaft 1 14b of the electric motor 114.
  • the grooved part 111a cooperates with a plate 112a of a flyweight brake 112 comprising a fixed drum 112b with the internal surface of which are capable of cooperating friction linings 112c carried by flexible blades 112d fixed to the periphery of the plate 112a.
  • the plate 112a comprises a free wheel 112e arranged so that when the connecting cable 116 is unwound, the shaft 111 drives the plate 112a while when the cable 116 is wound on the drum 110, thanks to the action of the motor 114, the plate 1 12a remains fixed.
  • the embodiment which has been described with reference to FIGS. 1 and 2 provides that at the time of the interruption of the supply of electric current, the cabin 103 descends (while being braked by the centrifugal device 112) until on the lowest floor of the installation so that if the power interruption occurs when the cabin is on a high floor, a very long length of cables 116 must be provided, and consequently the presence of 'An electric motor 114 is essential to ensure the number of turns necessary for the complete winding of such a length of cable.
  • the installation includes means for blocking the cabin 103 in the event of a breakdown or an electrical failure of the engine 105 of the winch 104, opposite the bearing situated directly below the place of the accidental stop of the cabin 103.
  • these means comprise stops 160 provided along the guides 100-101 and electromagnetic latches 163-164 carried by the cabin 103 and intended to cooperate with said stops 160.
  • the installation comprises an electric switch 121 for opening the supply circuit of the winch 105 and for opening the supply circuit for the electromagnetic latches 163 and 164 when the cabin 103 and the moving assembly 108 are uncoupled so that these remain in the active position as long as the mobile assembly 108 and the cabin 103 are uncoupled, a second electrical circuit 306-304-307-308-309 for controlling the winch 105 only in the direction of descent of the moving element 108 and a limit switch 304 for opening the second electrical circuit when the moving element 108 and the cabin 103 have been re-coupled.
  • FIGS. 5 and 6 there is shown such an embodiment of the invention according to which the cabin 103 is automatically stopped on the floor immediately located below the place where this cabin 103 has been separated from the moving assembly 108.
  • the fixed guides 100 and 101 receive stops 160 which are firmly fixed on the guides 100 and 101 and with which must cooperate the moving parts 161 and 162 of electromagnetic latches 163 and 164 fixed on the roof 109 of cabin 103.
  • This embodiment provides for a shorter cable length 116 than with the embodiment in FIGS. 1 and 2.
  • the connecting cable 116 is wound on a drum 165 of small dimensions, the axis 166 of which is associated on the one hand with a centrifugal braking device 112 and on the other hand with a barrel with spring 167.
  • the line 200 terminates by lines 201, 202 and 203 respectively at the electromagnets 118 and 119, at the motor 105 of the winch 104 and at one of the poles of electromagnetic locks 163 and 164.
  • Line 300 is connected directly to part 121 a of switch 121.
  • each electromagnetic lock 163 and 164 is connected directly by lines 200 and 203 to one of the poles of the source 117 while the other pole of each electromagnetic lock 163 and 164 is connected to the other pole of the source 117 by a line 302 connected to the part 121b of the switch 121 secured to the cabin 103.
  • the part 121b of the switch 121 which receives the line 302 connected to the other pole of the electromagnetic latches 163 and 164 also receives a line 301 connected to the other pole of the electromagnet, respectively of each electro- magnet 118 and 119, and a line 302a connected to the first contactor 303 of the relay box 122.
  • the switch 121 is closed so that the electromagnets 118 and 119 are excited and that they push the levers 141 and 142 against the action of the springs 149 and 150.
  • the current flows through the switch 121 closed to reach by the line 302 the other poles of the electromagnetic locks 163 and 164 than those supplied directly by the line 203.
  • the electromagnetic locks 163 and 164 are excited , which has the effect of keeping the movable elements 161 and 162 in the retracted position according to which they can pass in front of the stops 160 fixed to the vertical guides 100 and 101 without coming into contact with these stops, which corresponds to the normal operation of the 'elevator.
  • the electromagnetic latches 163 and 164 are no longer energized, so that the moving parts 161 and 162 are urged instantaneously, by any known means, to the extraction position shown on FIG. 6 so that the fixed stops 160 are on the path of the mobile elements 161 and 162.
  • the cabin 103 is blocked and, in a way, hooked to the stops 160 by the moving parts 161 and 162 of the electromagnetic locks 163 and 164.
  • FIGS. 5 and 6 arches 168 and 169 which are crossed by the mobile elements 161 and 162 and which contribute to the robustness of s 'together by reducing the lever arm resulting from the overhang of the elements 161 and 162 on the stops 160.
  • the stops 160 are fixed on the fixed guides 100 and 101 at a height such that the floor of the cabin 103 is exactly at the same level as the floor of the parlor when the electromagnetic locks 163 and 164 are in the active position shown in figure 6.
  • the cables 116 are automatically wound around the drum 165 because it is rotated by the spring 167a previously stretched inside the barrel 167 and which relaxes by returning to its natural position.
  • the switch 121 is closed and the current flows again to excite the electromagnets 118 and 119 on the one hand and the electromagnetic locks 163 and 164 on the other hand so that the movable parts 161 and 162 return to their erasing position shown in FIG. 5.
  • the electromagnet 120 returned the contactor 304 to its open position and the contactor 303 to its closed position so that finally the installation finds itself in a situation of being used normally.
  • the length of the connecting cables 116 is calculated to allow the cabin 103 to move away from the mobile assembly 108 by a length approximately equal to that of a floor, it is essential that stops 160 are provided for each floors of a given building, except the last one.
  • stops corresponding to this lower stage either as shown in FIGS. 5 and 6 by placing them along the fixed guides 100 and 101 at a location which corresponds to the upper part of the cabin 103 , or place them in the vicinity of the shock absorbers to limit the stroke of the cabin 103, in particular to avoid its unavailability in the event of overload.
  • stops corresponding to this lower stage either as shown in FIGS. 5 and 6 by placing them along the fixed guides 100 and 101 at a location which corresponds to the upper part of the cabin 103 , or place them in the vicinity of the shock absorbers to limit the stroke of the cabin 103, in particular to avoid its unavailability in the event of overload.
  • an overload of the cabin causes the emission of an electrical signal which can be exploited from the relay box 122 to deliberately cause the cabin to block facing a door. although there is no separation between the cabin 103 and the moving assembly 108, this in order to obtain an opposite effect to that explained above, namely the equivalent of a breakdown of the installation assuming the intervention of an attendant, for example to activate the reset switch 308, in order to radically prevent any operation of the elevator in overload.
  • the invention which has been described above according to two different embodiments, comes into action in the event of interruption of the electrical supply and not in the event of mechanical failure.
  • a control button located in the cabin may artificially cause an electrical failure, for example by opening a switch placed on line 200 in order to create the conditions for the separation of the cabin 103 with respect to the moving assembly 108 which amounts to obtaining the operation of the installation independently of the usual machinery and, consequently, allowing the passengers to reach a landing and to leave the cabin despite the blocking of the moving element 108 due to a mechanical failure of the engine 105 or of the winch 104, etc.
  • Springs 149 and 150 can also be replaced by equivalents.
  • each electromagnet 118-119 are constituted by the self-weight of the cabin 103 which acts in the direction of uncoupling.
  • the design of the electromagnetic locks 163 and 164 and of the braking or deceleration mechanisms can also be modified according to the needs of each case, which are within the reach of the skilled person.
  • the switch 121 can also be of a different type from that which has been shown here only by way of example and one could, in particular, provide that one of the two parts of the switch consists of all the studs and is integral either with the cabin 103 only, or with the moving element 108 only, while the other part of the switch 121 is composed by an element which ensures contact between the studs and closes the circuit when the cabin 103 and the moving assembly 108 are in the integral position.

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  • Cage And Drive Apparatuses For Elevators (AREA)
  • Power-Operated Mechanisms For Wings (AREA)
EP80401735A 1979-12-07 1980-12-05 Installation de sécurité pour ascenseurs Expired EP0032073B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7930068 1979-12-07
FR7930068A FR2437371A1 (fr) 1979-12-07 1979-12-07 Installation de securite pour ascenseurs

Publications (3)

Publication Number Publication Date
EP0032073A2 EP0032073A2 (fr) 1981-07-15
EP0032073A3 EP0032073A3 (en) 1981-07-22
EP0032073B1 true EP0032073B1 (fr) 1985-02-13

Family

ID=9232505

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80401735A Expired EP0032073B1 (fr) 1979-12-07 1980-12-05 Installation de sécurité pour ascenseurs

Country Status (4)

Country Link
US (1) US4364453A (nl)
EP (1) EP0032073B1 (nl)
DE (1) DE3070183D1 (nl)
FR (1) FR2437371A1 (nl)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES8403081A1 (es) * 1982-11-15 1984-04-01 Perez Marcelino De La Dispositivo de seguridad para la evacuacion de ascensores en casos de emergencia.
JPH07102949B2 (ja) * 1989-09-28 1995-11-08 三菱電機株式会社 エレベータの制動装置
US5388052A (en) * 1993-03-31 1995-02-07 Otis Elevator Company Method of operating an induction motor
TW348169B (en) * 1994-11-15 1998-12-21 Inventio Ag Evacuation system for a lift cage
US7051842B2 (en) * 2001-07-11 2006-05-30 Tseng-Wei Su Emergency moving device of an elevator
US7063306B2 (en) * 2003-10-01 2006-06-20 Paccar Inc Electronic winch monitoring system
ITRC20060012A1 (it) * 2006-05-16 2006-08-15 Salvatore Zaffino "sistema di ascensore con cabina dotata di corsa d'emergenza"
US8225908B1 (en) * 2006-10-11 2012-07-24 Schmutter Bruce E Elevator escape system including elevator cab detachable from an interposing device
FI123845B (fi) * 2011-08-25 2013-11-15 Kone Corp Käyttöyksikkö, hissi sekä menetelmä hissin käyttämiseksi
CN109368459A (zh) * 2018-10-31 2019-02-22 广东亚太西奥电梯有限公司 一种升降电梯及其电梯门锁回路

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH207119A (de) * 1938-12-01 1939-09-30 Schweiz Wagons Aufzuegefab Schutzvorrichtung an Aufzügen zur Verwendung bei Stromunterbrechungen.
FR1164563A (fr) * 1956-09-10 1958-10-13 Appareil de traction autonome de secours pour dépannage d'ascenseurs et autres
FR1580515A (nl) * 1968-07-19 1969-09-05
BE765036R (fr) * 1971-03-31 1971-08-16 Vanderplancke Hubert T Dispositief dat bij liftdefekt de in de kooi opgesloten personen de mogelijkheid moet geven zich te bevrijden,

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1270716A (en) * 1917-01-16 1918-06-25 Stephen Albert Flannery Safety apparatus for elevators.
US1301924A (en) * 1919-01-13 1919-04-29 Thomas Costanzo Safety device for elevators.
US1373122A (en) * 1920-04-24 1921-03-29 Evangelist Dominick Safety device for elevators
FR1536431A (fr) * 1967-07-06 1968-08-16 Cadre extensible pour la suspension d'une cabine d'ascenseur
BE754103A (fr) * 1969-07-31 1970-12-31 Voest Ag Dispositif de securite pour rupture de cable ou de
CH579194A5 (nl) * 1971-06-14 1976-08-31 Mannesmann Leichtbau Gmbh
FR2302960A1 (fr) * 1975-03-04 1976-10-01 Berthet Serge Dispositif elevateur formant monte-personne
JPS5273450A (en) * 1975-12-13 1977-06-20 Mitsubishi Electric Corp Emergency landing device for elevator

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH207119A (de) * 1938-12-01 1939-09-30 Schweiz Wagons Aufzuegefab Schutzvorrichtung an Aufzügen zur Verwendung bei Stromunterbrechungen.
FR1164563A (fr) * 1956-09-10 1958-10-13 Appareil de traction autonome de secours pour dépannage d'ascenseurs et autres
FR1580515A (nl) * 1968-07-19 1969-09-05
BE765036R (fr) * 1971-03-31 1971-08-16 Vanderplancke Hubert T Dispositief dat bij liftdefekt de in de kooi opgesloten personen de mogelijkheid moet geven zich te bevrijden,

Also Published As

Publication number Publication date
DE3070183D1 (en) 1985-03-28
US4364453A (en) 1982-12-21
EP0032073A2 (fr) 1981-07-15
FR2437371A1 (fr) 1980-04-25
FR2437371B1 (nl) 1982-06-04
EP0032073A3 (en) 1981-07-22

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