EP1638880B1 - Safety system for an elevator structure - Google Patents

Safety system for an elevator structure Download PDF

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Publication number
EP1638880B1
EP1638880B1 EP04738034A EP04738034A EP1638880B1 EP 1638880 B1 EP1638880 B1 EP 1638880B1 EP 04738034 A EP04738034 A EP 04738034A EP 04738034 A EP04738034 A EP 04738034A EP 1638880 B1 EP1638880 B1 EP 1638880B1
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EP
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Prior art keywords
analog signal
bus node
digital
control unit
characterised
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EP04738034A
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German (de)
French (fr)
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EP1638880A1 (en
EP1638880B2 (en
Inventor
Romeo Deplazes
Philipp Angst
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Inventio AG
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Inventio AG
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Priority to PCT/CH2004/000393 priority patent/WO2005000727A1/en
Priority to EP04738034.0A priority patent/EP1638880B2/en
Publication of EP1638880A1 publication Critical patent/EP1638880A1/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B13/00Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
    • B66B13/22Operation of door or gate contacts
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/0006Monitoring devices or performance analysers
    • B66B5/0018Devices monitoring the operating condition of the elevator system
    • B66B5/0031Devices monitoring the operating condition of the elevator system for safety reasons

Description

  • The invention relates to a bus-based safety system of an elevator installation and to a method for checking the safety system of an elevator installation.
  • Elevator systems have a safety circuit in which several safety elements, such as safety contacts and switches, are arranged in a series circuit. The contacts monitor, for example, whether a shaft door or the car door is open. The elevator car can only be moved if the safety circuit and thus also all safety contacts integrated in it are closed. Some of the security elements are operated by the doors. Other safety elements, such as an override switch, are actuated or triggered by the elevator car.
  • The safety circuit is connected to the drive or the brake unit of an elevator installation in order to interrupt the driving operation if the safety circuit is opened.
  • Safety systems with safety circuits of this kind have numerous disadvantages, which are briefly listed below with reference to a few examples:
    • Each safety circuit has inherent problems; These include the length of the connections, the voltage drop in the safety circuit and the relatively high assembly costs.
    • The individual safety contacts are relatively prone to failure; It can therefore come to unnecessary emergency stops of the elevator system.
    • The safety circuit does not allow a specific diagnosis; This means that when the safety circuit is open it is only ascertained that at least one safety contact is open.
    • A precautionary maintenance is not possible because there is no indication of the condition of the safety contacts of the safety circuit. It is therefore not possible to anticipate the elevator installation and to replace worn safety contacts in good time at a time when the elevator installation can be shut down without any problem, unless in the context of a periodic revision, but in many cases not necessary per se Decommissioning of the elevator system takes place.
    • The availability of the elevator may be unnecessarily limited, since the detection of an open safety contact always has a shutdown of the elevator system result.
  • It has therefore been proposed to equip elevator systems with a safety bus system instead of the safety circuit mentioned in the future. The safety bus system typically includes a control unit, a safety bus, and one or more bus nodes.
  • A safety system with safety bus is in the application EP01810903.3 described on 18.09.01. The safety bus is used to provide a secure and to enable reliable monitoring of the hoistway doors of the elevator installation. Another solution, which is considered to be the closest prior art, is incorporated in WO 03/024856 A disclosed.
  • In another patent application EP01810904.1 , which was filed on 18.09.01, describes a security system with safety bus, which allows an intelligent evaluation of the condition of cabin and landing doors.
  • A safety bus security system, in some of the proposed embodiments, includes at least one bus node, which may, for example, communicate with a security element to query its status. This can provide information about the current state of security elements. Similar to the conventional elevator systems with safety circuit, a reaction can be triggered depending on the condition of the safety element.
  • Such safety systems with safety bus must be carried out safely. Otherwise, for example, undefined states or misinterpretations can occur. In particular, the query of the security elements of the security system over the security bus should be absolutely safe and reliable.
  • The object of the invention is thus seen to show an improved safety system of the type mentioned, with which the disadvantages of the prior art can be avoided or at least greatly reduced.
  • The object is achieved by the features of claim 1 and the features of claim 9.
  • Advantageous developments of the inventive safety system are defined by the dependent claims 2 to 8. Advantageous developments of the inventive method are defined by the dependent claims 10 to 14.
  • In the following the invention will be described in detail by means of embodiments and with reference to the drawing. Show it:
  • Fig. 1
    a schematic block diagram of a first inventive security system;
    Fig. 2A
    a schematic block diagram of a second inventive security system;
    Fig. 2B
    Details of the second security system according to the invention;
    Fig. 3
    Details of a third security system according to the invention.
  • Fig. 1 shows a first security system 10, which is part of an elevator system. The security system 10 comprises a control unit 11, at least one bus node 13 and a bus 12 in order to enable communication between the control unit 11 and the bus node 13. In Fig. 1, a security element 16 is indicated, which interrogates, for example, the state of a manhole or car door, or monitors a bolt. Security elements in connection with the present invention are security-relevant elements, such as door contacts, for example. Bolt contacts, buffer contacts, flap contacts, sensors, actuators, travel switches (eg on the inspection panel or in the return control), and emergency stop switch. The bus node 13 has first circuit means 14 and second circuit means 15.
  • According to the invention, the control unit 11 gives the bus node 13 a setpoint value, for example a current intensity or a voltage. The control unit 11 thus acts as a "command generator". The specification of the desired value is carried out by transmitting a digital command or digital information via the bus 12 to the bus node 13. A first analog signal corresponding to the predetermined target value is provided by the first circuit means 14. The security element 16 is acted upon by this first analog signal, as indicated by the arrow 16.1. The second circuit means 15 are arranged and adapted to pick up a second analog signal on the security element 16, as indicated by the arrow 16.2. The bus node 13 processes the second analog signal and provides digital feedback information, which is either transmitted via the bus 12 to the control unit 11, or which is picked up by the control unit 11 via the bus 12 at the bus node 13. In addition, the bus node 13 may provide digital diagnostic information.
  • In this way, the following inventive query scheme can be implemented:
  1. 1. The control unit 11 specifies a setpoint, which is transmitted as digital information or as a digital command via the bus 12 to the bus node 13;
  2. 2. The first circuit means 14 convert the information and provide a first analog signal of the appropriate magnitude;
  3. 3. The first analog signal is applied to the security element 16 or impressed in the security element 16;
  4. 4. The second circuit means 15 detect a second analog signal which is correlated with the first analog signal or is caused by the first analog signal;
  5. 5. The second analog signal is conditioned by the bus node 13 to allow a qualitative and / or quantitative comparison with the first analog signal.
  6. 6. The bus node 13 provides digital return information for the control unit 11. In addition, the bus node 13 may provide digital diagnostic information.
  • The comparison preferably takes place in the control unit 11 in order to be able to make a reliable and reliable statement about the security element 16. The control unit 11 can thus determine, for example, whether the security element 16 is opened or closed.
  • It is also possible to perform a qualitative evaluation of the first analog signal when processing the analog signal, wherein the evaluation is not relevant to safety and can therefore be carried out completely or partially by the bus node 13. This qualitative evaluation allows a diagnosis about the qualitative state of the security element (eg so the wear and / or the serviceability of a contact is assessed). It is particularly advantageous to carry out this diagnosis in the bus node 13 in order to minimize the data traffic on the bus 12 and not to burden the safety-relevant control unit 11 with it. The result of the diagnosis is provided as digital diagnostic information.
  • Depending on the embodiment and implementation of the invention, it is possible to make a statement about the switching state of the security element 16, as well as about the function of the entire query chain. Under query chain in the present context, the chain of the control unit on the bus, the bus node, the security element, and the bus to understand back to the control unit.
  • For example, if the control unit 11 sets a certain current as the setpoint, which is then impressed in the security element 16, the control unit 11 via the second circuit means 15 and by means of the return information determine whether the corresponding current or, for example, a voltage with correlated to the current was measured.
  • In a quantitative comparison of the analog signals if the signal S 1 to the signal S * 1 corresponds (see Fig 2B.) Is determined for example by the control unit 11. In this case, conversion factors can be taken into account, or a value pair can be taken from a table. By way of illustration, a simple numerical example is given. The control unit 11 presets a current of 1A. The circuit means 14 provides a current with a current of 1A. This current flows through the security element 16. On the evaluation side, a voltage of 5V is measured by the circuit means 15, the circuit means 15 having a resistance of 5 ohms to convert the current to a voltage. From a table, for example, stored in a memory of the bus node 13, it can be seen that a voltage of 5V corresponds to a current of 1A. In this case, comparing the value pair (1A; 5V) has shown that the query chain works.
  • Preferably, the qualitative comparison (also referred to as diagnosis) is designed so that a certain tolerance is taken into account. To come back to the numerical example, the query chain would be considered to work as long as the voltage deviates from the 5V voltage, for example, by less than 0.5 volts. Thus, it can be considered that such inaccuracies and losses are inherent in such a query chain.
  • The tolerance (s) can be absolute or relative. The tolerances can also be variable.
  • If the voltage value determined by the circuit means 15 is outside the tolerance range, then a reaction can be initiated. This is done for example by the control unit 11. With a small deviation, a service call can be triggered by the control unit 11. In the event of a greater deviation, this must be interpreted as a "malfunction" and lead, for example, to an emergency stop of the elevator installation.
  • FIGS. 2A and 2B show a second security system 20 which is part of an elevator installation. The security system 20 comprises a control unit 21, at least one bus node 23 and a bus 22 to enable communication between the control unit 21 and the bus node 23. In Fig. 2A and Fig. 2B, a switch 26 is shown as a security element, for example, the state of a manhole or car door interrogated, or monitors a (shaft door) latch. The bus node 23 has first circuit means 24 and second circuit means 25.
  • The first circuit means 24 in the illustrated embodiment comprise a processor 24.1 which can receive digital information over the bus 22 as indicated by the arrow 22.1. There is provided a recorder element 24.2, which provides a "control" signal S S , which is applied to a controllable current source 24.3 and there causes the provision of a current. For this purpose, the recorder element 24.2 may comprise, for example, a digital-to-analogue converter. The processor 24.1 evaluates the digital information to determine which setpoint the control unit 21 has specified and provides the recorder element 24.2 a digital signal D Soll . The current is referred to here as the first signal S 1 . This first signal S 1 is correlated with the "control" signal S S. When the switch 26 is closed, the current S 1 flows via the connection 26.1 into the switch 26 and a current S * 1 via the connection 26.2 into the circuit means 25.3. If it is an ideal switch 26, the current S 1 is equal to the current S * 1 , ie there are no losses in the switch 26. The circuit means 25.3 is a in the present example Converter, which converts the current S * 1, which is supplied via the line 26.2, into a voltage S 2 . The voltage S 2 is referred to here as the second signal S 2 . The converter 25.3 may comprise, for example, a resistor divider and a filter. The converter 25.3 is followed by a read element 25.2, which processes the second signal S 2 . The read element 25.2 converts the second signal S 2 into a digital quantity D ist , which is fed to a processor 25.1. For this purpose, the read element 25.2 may comprise, for example, an analog-to-digital converter.
  • The second embodiment is designed so that the bus node 23 performs a diagnosis by a qualitative comparison of the first analog signal S 1 with the second analog signal S 2 . This comparison may, for example, be performed jointly by the processor 25.1, by the processor 24.1, or by both processors 24.1 and 25.1. A comparison operation by only one of the processors 24.1 or 25.1 requires at least one cross-connection between the first circuit means 24 and the second circuit means 25. The result of the comparison is then provided to the control unit 21 as digital diagnostic information. Either the digital diagnostic information can be queried by the control unit 21 at the bus node 23 (pull principle), or the bus node 23 can transmit the digital diagnostic information via the connection 22.2 and the bus 22 to the control unit 21 (push principle). The described qualitative comparison is carried out in addition to the quantitative comparison, which is carried out in the control unit 21 on the basis of digital feedback information.
  • Performing the qualitative comparison in the bus node 23 has the advantage that the bus 22 is not burdened with the transmission of signals, but that in each case only the digital diagnostic information, which in principle represents the result of the qualitative comparison, and the return information for the quantitative Comparison in the control unit 21, is transmitted via the bus 22 to the control unit 21.
  • The previously described embodiments allow a reliable statement about the function of the entire query chain including the security element.
  • Another embodiment of the invention is designed so that not only a comparison of the analog signals, but also an evaluation of the second analog signal S2 is made. Depending on the accuracy of the converter 25.3 and the resolution of the read element 25.2, which is mainly determined by the resolution of the analog-to-digital converter, in addition to a pure security control of the entire query chain also carried out an evaluation. Thus, an evaluation (in the sense of a diagnosis) of the contact state is possible if the security element is a switch in that the contact resistance is determined. In addition, or as an alternative, the bounce behavior of a switch can also be evaluated. The resolution must be sufficient for this, since the bounce behavior typically results in short voltage peaks and a change in the bounce behavior can only be demonstrated if a precise evaluation of the voltage peaks takes place.
  • Another embodiment of the invention is shown in FIG. In this figure, a bus node 33 is shown polling a security element 36 with two redundant switches 36.1 and 36.2. The first circuit means 34 comprise in the embodiment shown a processor 34.1 which can receive information via a connection 32.1. There is provided a recorder element 34.2 which provides "control" signals S S which are applied to two controllable current sources 34.3 and 34.4. The current source 34.3 provides a current, which is referred to here as the first signal S 1 . The current source 34.4 provides a current, which is also referred to here as the first signal S 3 . The recorder element 34.2 may, for example, comprise a digital-to-analogue converter which emits a "control" signal S S correlated therewith when receiving a digital setpoint quantity D setpoint . The first analog signals S 1 and S 3 are in turn correlated with the "control" signal S S. When the switch 36.1 is closed, the current S 1 flows through the switch 36.1 and as current S * 1 into a circuit 35.3. With the switch 36.2 closed, the current S 3 flows through the switch 36.2 and as current S * 3 into a circuit 35.4.
  • The circuit means 35.3 and 35.4 in the present example are converters which convert the currents S * 1 and S * 3 into voltages S 2 and S 4 . The voltages S 2 and S 4 are referred to here as second analog signals S 2 and S 4 . The converters 35.3 and 35.4 may, for example, comprise resistor dividers and filters. The converters 35.3 and 35.4 are followed by a read element 35.2, which processes the second analog signals S 2 and S 4 . The Read element 35.2 converts the second analog signals S 2 and S 4 into digital quantities D Ist , which are supplied to a processor 35.1, which transmits the corresponding digital return information to the control unit via the connection 32.2. The read element 35.2 may comprise, for example, one or two analog-to-digital converters. If only one analog-to-digital converter is present, the signals S 2 and S 4 are successively converted in a time-divisional manner in a multiplex mode.
  • By means of the circuit shown in FIG. 3, the security level can also be increased on the side of the security element 36, since this is implemented redundantly with the switches 36.1 and 36.2 and can be monitored separately.
  • According to the invention, the bus node 13, respectively 23 or 33, is designed such that it has two circuit means 14, 15, respectively 24, 25 or 34, 35. This 2-channel design achieves redundancy.
  • The security of the bus nodes according to the invention can be reduced by using a bus node with only one processor. In this case, the processor is used both to drive the writer element and to process the digital information of the read element. As a result, the redundancy falls partially off, which is prescribed for safety reasons, depending on the application. The functionality of the overall system, however, essentially remains. Reducing redundancy can reduce costs. However, it is still possible to ensure the safety of the entire system by other measures. It can for example be such a bus node with reduced redundancy part of a safety system with safety bus, according to the application mentioned above EP01810903.3 , be.
  • According to the invention, a security element 36 with redundant switches or contacts 36.1, 36.2 can be monitored with a bus node 33. It may be a part of the circuit means 34, 35 are carried out separately, as shown in Fig. 3 with reference to the circuit means 34.3 and 34.4, respectively 35.3 and 35.4. Another part of the circuit means 34, 35 can be used in common for a plurality of switches or contacts 36.1, 36.2, as shown by the circuit means 34.1 and 34.2, respectively 35.1 and 35.2.
  • Some standards require a redundant design of sensors and / or switches. The embodiment shown in Fig. 3 is particularly suitable for meeting such standards.
  • However, it is also possible with the circuit of FIG. 3 to monitor two different security elements. The first security element 36.1 may, for example, be a bolt contact, and the second security element 36.2 may be a buffer contact which is completely independent of the bolt contact.
  • According to a further embodiment of the invention, the control unit is designed to be 2-channel, wherein a first channel performs the digital specification of a signal size (nominal value) and a second channel receives the digital return information from the bus node.
  • Another embodiment of the invention is characterized in that the circuit means 14, 24, 34 generate pulsed first analog signals.
  • According to the invention, the bus node 13, 23, 33 comprise further elements. For example, interface circuits can be provided which accomplish the communication via the bus 12, 22 with the control unit 11, 21. Preferably, two-channel operation is also used here, that is to say one interface circuit each is provided for the receiver side (circuit means 14, 24, 34) and an interface circuit for the transmitter side (circuit means 15, 25, 35).
  • If suitable interfaces are provided and a corresponding communication protocol is used, various bus nodes can be individually addressed via the bus. For this purpose, each bus node can have its own identification word, for example its own address. The control unit then specifies, together with the nominal value, the address of the desired bus node. Only the addressed bus node is thus addressed by the control unit.
  • According to a further embodiment of the invention, the first circuit means 14, 24, 34 and the second circuit means 15, 25, 35 are each realized as an integrated circuit. Each of these integrated circuits then has an analog and a digital part.
  • In a further embodiment of the invention, instead of a current, a voltage is the first signal to the security element created. It can then be made by the circuit means 15, 25, 35, a conversion of the voltage into a current, or it can be tapped directly a voltage at the security element.
  • According to a further embodiment of the invention, the converter 25.3 comprises an optoelectronic coupler which converts the signal S * 1 into a light signal. This light signal is then converted into a voltage on the receiver side of the optoelectronic coupler and can be further processed.
  • According to a further embodiment of the invention, the control unit comprises means permitting monitoring of the time sequence. If an excessively large period of time passes between the specification of a setpoint value and the receipt of a feedback, this too can be an indication of an error or a problem in the security system.
  • A further embodiment of the invention is characterized in that the bus node comprises further circuit means which allow a connection of other elements, for example of sensors, actuators or displays. In this case, the bus node can be considered as a hybrid circuit that monitors both security elements and non-security elements.
  • Preferably, the security system according to the invention is designed so that it serves to detect at least a part of the safety-relevant states of an elevator installation separately from the actual elevator control and to trigger reactions in the event of problems by the Security system, respectively the control unit, engages directly in the elevator control.
  • Claims (14)

    1. Safety system (10; 20) of a lift installation, with
      a) a control unit (11; 21),
      b) at least one bus node (13; 23; 33),
      c) at least one safety element (16; 26; 36) and
      d) a bus (12; 22, 22.1, 22.2; 32.1, 32.2) which enables communication between the control unit (11; 21) and the bus node (13; 23; 33),
      characterised in that the bus node (13; 23; 33) comprises first switching means (14; 24; 34) which on digital presetting of a target magnitude by the control unit (11; 21) acts on the safety element (16; 26; 36) with a first analog signal and second switching means (15; 25; 35) which derive an analog signal from the safety element (16; 26; 36) and make digital feedback information available to the control unit (11; 21) by way of the bus (12; 22, 22.1, 22.2; 32.1, 32.2).
    2. Safety system (10; 20) according to claim 1, characterised in that the safety element (16; 26; 36) is one or more of the following safety-relevant elements:
      a) door contact
      b) lock contact
      c) buffer contact
      d) flap contact
      e) sensor
      f) actuator
      g) travel switch
      h) emergency stop switch.
    3. Safety system (10; 20) according to claim 1, characterised in that the first switching means (14; 24; 34) comprises a write element (24.2; 34.2), which provides the first analog signal, and that the second switching means (15; 25; 35) comprises a read element (25.2; 35.2), which processes a second analog signal.
    4. Safety system (10; 20) according to claim 3, characterised in that the bus node (13; 23; 33) comprises a processor (24.1; 34.1), which converts the presetting of the control unit (11; 21) into the first analog signal or triggers a conversion into the first analog signal.
    5. Safety system (10; 20) according to claim 3 or 4, characterised in that the bus node (13; 23; 33) comprises a processor (25.1; 35.1), which converts the second analog signal into the digital feedback information or triggers a conversion of the second analog signal.
    6. Safety system (10; 20) according to one of the preceding claims, characterised in that the switching means at least in part is an analog switching means (24.3, 25.3; 34.2, 35.3, 35.4) and that the bus node (13; 23; 33) comprises an analog-to-digital converter,
      a) which converts the digital presetting of the control unit (11; 21) into an analog magnitude which corresponds with the first analog signal or is correlated with the first analog signal, and
      b) which converts the analog signal into digital information.
    7. Safety system (10; 20) according to one of the preceding claims, characterised in that the bus node (13; 23; 33) carries out a qualitative comparison of the first analog signal with the second analog signal and/or a qualitative evaluation of the first analog signal and makes the result of the comparison available as digital diagnostic information.
    8. Safety system (10; 20) according to one of claims 1 to 6, characterised in that the control unit (11; 21) carries out a quantitative comparison of the first analog signal with the second analog signal, wherein this comparison takes place on the basis of the digital presetting and the digital feedback information.
    9. Method for continuous checking of a safety system (10; 20) of a lift installation, wherein the safety system (10; 20) comprises a control unit (11; 21), at least one bus node (13; 23; 33), at least one safety element (16; 26; 36) and a bus (12; 22, 22.1, 22.2; 32.1, 32.2), which enables a communication between the control unit (11; 21) and the bus node (13; 23; 33), characterised in that the following steps are carried out:
      a) transmission of digital information by the control unit (11; 21) to the bus node (13; 23; 33) by way of the bus (12; 22, 22.1, 22.2; 32.1, 32.2) in order to thereby preset a target magnitude,
      b) conversion of the digital information by the bus node (13; 23; 33) in order to prepare a first analog signal which corresponds with the target magnitude or is correlated therewith,
      c) application of the first analog signal to, or impression of the first analog signal on, the safety element (16; 26; 36),
      d) derivation or reception of an analog signal at a safety element (16; 26; 36) by the bus node (13; 23; 33),
      e) processing of the analog signal by the bus node (13; 23; 33) and
      f) preparing digital feedback information by the bus node (13; 23; 33) for the control unit (11; 21).
    10. Method according to claim 9, characterised in that processing of the digital information and the feedback information is carried out by the control unit (11; 21), wherein preferably a statement about the safety element (16; 26; 36) is made possible.
    11. Method according to claim 9, characterised in that on processing of the analog signal a qualitative evaluation of the first analog signal is undertaken, wherein the evaluation is carried out entirely or partly by the bus node (13; 23; 33).
    12. Method according to one of claims 9 to 11, characterised in that the bus node (13; 23; 33) carries out a digital-to-analog conversion in order to convert the digital information into the first signal.
    13. Method according to one of claims 9 to 11, characterised in that the bus node (13; 23; 33) on processing of the analog signal carries out an analog-to-digital conversion in order to convert the analog signal into the digital feedback information.
    14. Method according to one of claims 9 to 13, characterised in that the bus node (13; 23; 33) is constructed in redundant manner and steps a) to c) are performed by switching means of the bus node (13; 23; 33) different from the steps d) and e).
    EP04738034.0A 2003-06-30 2004-06-25 Safety system for an elevator structure Active EP1638880B2 (en)

    Priority Applications (3)

    Application Number Priority Date Filing Date Title
    EP03405483 2003-06-30
    PCT/CH2004/000393 WO2005000727A1 (en) 2003-06-30 2004-06-25 Safety system for an elevator structure
    EP04738034.0A EP1638880B2 (en) 2003-06-30 2004-06-25 Safety system for an elevator structure

    Applications Claiming Priority (4)

    Application Number Priority Date Filing Date Title
    SI200430483T SI1638880T2 (en) 2003-06-30 2004-06-25 Safety system for an elevator structure
    PL04738034T PL1638880T5 (en) 2003-06-30 2004-06-25 Safety system for an elevator structure
    EP04738034.0A EP1638880B2 (en) 2003-06-30 2004-06-25 Safety system for an elevator structure
    CY20071101281T CY1106914T1 (en) 2003-06-30 2007-10-08 System security an installation lift

    Publications (3)

    Publication Number Publication Date
    EP1638880A1 EP1638880A1 (en) 2006-03-29
    EP1638880B1 true EP1638880B1 (en) 2007-07-25
    EP1638880B2 EP1638880B2 (en) 2013-07-24

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    Application Number Title Priority Date Filing Date
    EP04738034.0A Active EP1638880B2 (en) 2003-06-30 2004-06-25 Safety system for an elevator structure

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    US (1) US7350624B2 (en)
    EP (1) EP1638880B2 (en)
    JP (1) JP4647599B2 (en)
    KR (1) KR100724325B1 (en)
    CN (1) CN100590051C (en)
    AT (1) AT367993T (en)
    AU (1) AU2004251797B8 (en)
    BR (1) BRPI0412047B1 (en)
    CA (1) CA2526984C (en)
    CY (1) CY1106914T1 (en)
    DE (1) DE502004004449D1 (en)
    DK (1) DK1638880T4 (en)
    ES (1) ES2291884T5 (en)
    HK (1) HK1090015A1 (en)
    MX (1) MXPA05013517A (en)
    NZ (1) NZ543896A (en)
    PL (1) PL1638880T5 (en)
    PT (1) PT1638880E (en)
    SI (1) SI1638880T2 (en)
    WO (1) WO2005000727A1 (en)

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    Publication number Priority date Publication date Assignee Title
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    PT1638880E (en) 2007-09-21
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    JP4647599B2 (en) 2011-03-09
    HK1090015A1 (en) 2007-11-30
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    AU2004251797A1 (en) 2005-01-06
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    BRPI0412047B1 (en) 2015-09-01
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    DK1638880T4 (en) 2013-10-14
    CN100590051C (en) 2010-02-17
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    PL1638880T3 (en) 2007-12-31
    US7350624B2 (en) 2008-04-01
    WO2005000727A1 (en) 2005-01-06
    AU2004251797B2 (en) 2010-03-04
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    KR100724325B1 (en) 2007-06-04
    JP2007506625A (en) 2007-03-22

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