EP0442429A2 - Safety catch for a carriage guided along stair rail - Google Patents

Safety catch for a carriage guided along stair rail Download PDF

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Publication number
EP0442429A2
EP0442429A2 EP91101901A EP91101901A EP0442429A2 EP 0442429 A2 EP0442429 A2 EP 0442429A2 EP 91101901 A EP91101901 A EP 91101901A EP 91101901 A EP91101901 A EP 91101901A EP 0442429 A2 EP0442429 A2 EP 0442429A2
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EP
European Patent Office
Prior art keywords
lever
safety
arm
rungs
catch
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.)
Granted
Application number
EP91101901A
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German (de)
French (fr)
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EP0442429B1 (en
EP0442429A3 (en
Inventor
Gerd Grass
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Thyssen Treppenlifte GmbH
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Grass GmbH Deutschland
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Filing date
Publication date
Application filed by Grass GmbH Deutschland filed Critical Grass GmbH Deutschland
Publication of EP0442429A2 publication Critical patent/EP0442429A2/en
Publication of EP0442429A3 publication Critical patent/EP0442429A3/en
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Publication of EP0442429B1 publication Critical patent/EP0442429B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B9/00—Kinds or types of lifts in, or associated with, buildings or other structures
    • B66B9/06—Kinds or types of lifts in, or associated with, buildings or other structures inclined, e.g. serving blast furnaces
    • B66B9/08—Kinds or types of lifts in, or associated with, buildings or other structures inclined, e.g. serving blast furnaces associated with stairways, e.g. for transporting disabled persons
    • B66B9/0807—Driving mechanisms
    • B66B9/0815—Rack and pinion, friction rollers

Definitions

  • the invention relates to a safety device for a guided on a railing carriage, on which a two-armed, pivotally mounted catch lever is provided, which stops the carriage by swiveling against rungs arranged transversely to the direction of the rungs at impermissibly high speed.
  • a safety device for an elevator in which rotatable pendulums are attached to the side of the elevator floor, which are pivoted out when the elevator moves up or down by hitting curved elevations on the guide rails. If a predetermined maximum speed is reached during the downward movement of the elevator, the pendulums cannot return to their normal position quickly enough and then hit protrusions of the guide rail by which the elevator is stopped.
  • This known device is complex and costly due to the high number of curved elevations and the additional projections required and cannot be set to different response speeds.
  • the invention has for its object to show a simpler solution for a safety device for a sled guided on a railing, which also allows an advantageous setting to different response speeds.
  • the object is achieved by the features specified in the characterizing part of patent claim 1. Further features are listed in the subclaims. An embodiment of the invention will now be explained on a stair lift with a load-bearing device designed as a platform or seat with reference to the drawings.
  • the railing for guiding the load-bearing device - hereinafter referred to briefly as a carriage - essentially consists of a stable guide tube 1 (FIG. 1), a toothed rack 5 guided close above the floor 2 or the steps 3 and arranged between the guide tube 1 and the toothed rack 5 Rungs 7, which have the same distances in their upper area.
  • a guide cage 10 is mounted on a pivot axis 12 on the base plate 9 of the sled, which carries a person seat or a platform for a disabled lift (not shown).
  • Four guide rollers 14, which are adapted to the diameter of the guide tube 1, are rotatably mounted in the guide cage 10 and allow safe and smooth guidance of the slide on the guide railing.
  • the carriage is supported in its lower section in the region of the rack 5 (FIG. 2) and driven at the same time.
  • the rack 5 is covered over its entire length on its side facing the steps by a screen 16 (not shown in FIG. 1).
  • a screen 16 (not shown in FIG. 1).
  • On a strut 18 fastened to the base plate 9 are two lower support rollers 20 rotatably mounted, which run on the lower edges of the rack 5 and the screen 18.
  • An electric motor 22 drives a gearwheel 24 which engages in the rack and has a lateral guide on the screen 16 via a gearbox 23.
  • the carriage is supported by an upper support roller 26 on the outside of the screen 16.
  • the massive catch lever 28 (FIGS. 2 and 3) is pivotably mounted on two bearing plates 30, which are fixedly connected to the base plate 9, and has a length which corresponds approximately to the mean distance between two rungs 7.
  • the two-armed catch lever 28 is held in the position shown by the solid line in FIG. 3 by a tension spring 34, which is fastened on the one hand to a holding pin 35 of the one bearing plate 30 and on the other hand is suspended in one of the holes in the row of holes 36.
  • an acute-angled recess 40 is worked in, which guarantees that the catch arm 39 will snap securely into the rung 7a.
  • an extension 43 is provided which, when the catch lever 28 is pivoted into the latching position, serves a switch 44 for switching off the power supply to the electric motor 22 (FIG. 1) and possibly for triggering an alarm signal.
  • the mountain-side catch lever arm 41 has on its side facing the rungs 7 a cam-like projection 45 which pivots the catch lever 28 when the slide descends on each rung 7 in such a way that the valley-side catch lever arm 39 enters the space between the next rung 7.
  • the maximum angle of the pivoting-in process is determined by the maximum increase of the projection 45 when sliding along the long side 46 of the rung 7. As the apex of the projection 45 leaves the longitudinal side 46 of the rung 7 during the downward movement in the direction of arrow 32, the return movement of the catch lever 28 will begin under the action of the tension spring 34. Because of the inertia of the relatively massive catch lever 28, a certain time is required for the pivoting back of the catch lever, since this movement begins after the release of the projection on the rung 7 at zero and increases with the acceleration determined by the force of the tension spring 34. However, if the speed of the downward movement is greater than the defined normal speed, the catch lever 28 will not have left the area between the rungs 7 and 7a (FIG. 3) and will apply it to the rung 7a and assume the position shown in broken lines in FIG.
  • the main advantage of the safety device according to the invention is the particularly cost-effective and reliable design solution that does not require any additional monitoring device.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Automation & Control Theory (AREA)
  • Structural Engineering (AREA)
  • Types And Forms Of Lifts (AREA)

Abstract

Der an einem Geländer geführte Schlitten ist mit einem massiv ausgebildeten Fanghebel (28) ausgerüstet, der quer zur Fahrtrichtung (32) schwenkbar so nahe am Geländer angeordnet ist, daß er mit seinem talseitigen Hebelarm (39) gegen die Wirkung einer Zugfeder (34) in den Bereich zwischen zwei benachbarten Sprossen (7) und (7a), die senkrecht zur Fahrtrichtung (32) am Geländer angeordnet sind, einschwenken kann. Die Zugfeder (34) versucht, den Fanghebel (28) in eine längs zur Fahrtrichtung (32) weisende Lage zu bringen. An der einen auf der zum Geländer weisenden Längsseite des Fanghebels (28) weist dieser an seinem bergseitigen Arm einen nockenartigen Vorsprung (45) auf, der den Fanghebel (28) bei einer Talfahrt an jeder Sprosse (7) so verschwenkt, daß der talseitige Arm des Fanghebels (39) in den Zwischenraum zur nächsten Sprosse (7) eintritt. Wenn die Talfahrt eine vorherbestimmte Geschwindigkeit überschreitet, kann der Fanghebel (28) aufgrund seiner Massenträgheit nicht schnell genug aus dem Bereich der Sprossen(7)austreten und stoppt den Schlitten. <IMAGE>The carriage guided on a railing is equipped with a solidly designed safety lever (28) which is arranged so that it can be swiveled transversely to the direction of travel (32) so close to the railing that its valley lever arm (39) counteracts the action of a tension spring (34) can pivot the area between two adjacent rungs (7) and (7a), which are arranged perpendicular to the direction of travel (32) on the railing. The tension spring (34) tries to bring the catch lever (28) into a position pointing longitudinally to the direction of travel (32). On one side of the safety lever (28) pointing towards the railing, this has on its arm on the mountain side a cam-like projection (45) which pivots the safety lever (28) on each rung (7) during a descent so that the arm on the valley side of the catch lever (39) enters the space between the next rung (7). If the descent exceeds a predetermined speed, the catch lever (28) cannot exit the area of the rungs (7) quickly enough due to its inertia and stops the carriage. <IMAGE>

Description

Die Erfindung betrifft eine Fangvorrichtung für einen an einem Geländer geführten Schlitten, an dem ein zweiarmiger, quer zur Fahrtrichtung schwenkbar gelagerter Fanghebel vorgesehen ist, der bei unzulässig erhöhter Geschwindigkeit den Schlitten durch Einschwenken gegen quer zur Fahrtrichtung am Geländer angeordnete Sprossen stoppt.The invention relates to a safety device for a guided on a railing carriage, on which a two-armed, pivotally mounted catch lever is provided, which stops the carriage by swiveling against rungs arranged transversely to the direction of the rungs at impermissibly high speed.

Aus der CH-PS 6617 ist bereits eine Fangvorrichtung für einen Fahrstuhl bekannt geworden, bei dem seitlich am Fahrstuhlboden drehbare Pendel angebracht sind, die bei Auf- oder Abwärtsbewegung des Fahrstuhls durch Auftreffen auf kurvenartige Erhöhungen an den Führungsschienen ausgeschwenkt werden. Wenn bei der Abwärtsbewegung des Fahrstuhls eine im voraus bestimmte Maximalgeschwindigkeit erreicht wird, können die Pendel nicht schnell genug in ihre Normallage zurückkehren und treffen dann auf Vorsprünge der Führungsschiene, durch die der Fahrstuhl angehalten wird. Diese bekannte Vorrichtung ist durch die erforderliche hohe Anzahl der kurvenartigen Erhöhungen und der zusätzlichen Vorsprünge aufwendig und kostspielig und läßt sich nicht auf unterschiedliche Ansprechgeschwindigkeiten einstellen.From CH-PS 6617 a safety device for an elevator is already known, in which rotatable pendulums are attached to the side of the elevator floor, which are pivoted out when the elevator moves up or down by hitting curved elevations on the guide rails. If a predetermined maximum speed is reached during the downward movement of the elevator, the pendulums cannot return to their normal position quickly enough and then hit protrusions of the guide rail by which the elevator is stopped. This known device is complex and costly due to the high number of curved elevations and the additional projections required and cannot be set to different response speeds.

Der Erfindung liegt die Aufgabe zugrunde, eine einfachere Lösung für eine Fangvorrichtung für einen an einem Geländer geführten Schlitten aufzuzeigen, die auch eine vorteilhafte Einstellung auf verschiedene Ansprechgeschwindigkeiten gestattet. Die gestellte Aufgabe wird durch die im Kennzeichen des Patentanspruchs 1 angegebenen Mekrmale gelöst. Weitere Merkmale sind in den Unteransprüchen aufgeführt. Ein Ausführungsbeispiel der Erfindung wird nun an einem Treppenaufzug mit einer als Plattform oder Sitz ausgebildeten Lastaufnahmeeinrichtung anhand der Zeichnungen erläutert.The invention has for its object to show a simpler solution for a safety device for a sled guided on a railing, which also allows an advantageous setting to different response speeds. The object is achieved by the features specified in the characterizing part of patent claim 1. Further features are listed in the subclaims. An embodiment of the invention will now be explained on a stair lift with a load-bearing device designed as a platform or seat with reference to the drawings.

Es zeigen:

Fig.1
eine vereinfachte Seitenansicht des Treppenaufzugs,
Fig.2
eine Frontansicht des Treppenaufzugs,teilweise geschnitten und
Fig.3
eine Darstellung und Lagerung des Fanghebels.
Show it:
Fig. 1
a simplified side view of the stair lift,
Fig. 2
a front view of the elevator, partially cut and
Fig. 3
a representation and storage of the catch lever.

Das Geländer zur Führung der Lastaufnahmeeinrichtung - nachfolgend kurz als Schlitten bezeichnet - besteht im wesentlichen aus einem stabilen Führungsrohr 1 (Fig.1), einer dicht über dem Fußboden 2 oder den Treppenstufen 3 geführten Zahnstange 5 und zwischen dem Führungsrohr 1 und der Zahnstange 5 angeordneten Sprossen 7, die in ihrem oberen Bereich gleiche Abstände aufweisen. An der Grundplatte 9 des Schlittens, der einen Personensitz oder eine Plattform für einen Behindertenfahrstuhl (nicht dargestellt) trägt, ist ein Führungskäfig 10 auf einer Schwenkachse 12 gelagert. Im Führungskäfig 10 sind vier an den Durchmesser des Führungsrohres 1 angepaßte Führungsrollen 14 drehbar gelagert, die eine sichere und leichtgängige Führung des Schlittens am Führungsgeländer gestatten.The railing for guiding the load-bearing device - hereinafter referred to briefly as a carriage - essentially consists of a stable guide tube 1 (FIG. 1), a toothed rack 5 guided close above the floor 2 or the steps 3 and arranged between the guide tube 1 and the toothed rack 5 Rungs 7, which have the same distances in their upper area. A guide cage 10 is mounted on a pivot axis 12 on the base plate 9 of the sled, which carries a person seat or a platform for a disabled lift (not shown). Four guide rollers 14, which are adapted to the diameter of the guide tube 1, are rotatably mounted in the guide cage 10 and allow safe and smooth guidance of the slide on the guide railing.

Der Schlitten wird in seinem unteren Abschnitt im Bereich der Zahnstange 5 (Fig. 2) abgestützt und zugleich angetrieben. die Zahnstange 5 ist auf ihrer zu den Treppenstufen weisenden Seite in ihrer ganzen Länge durch eine Sichtblende 16 abgedeckt (in Fig.1 nicht dargestellt). An einer an der Grundplatte 9 befestigten Strebe 18 sind zwei untere Stützrollen 20 drehbar gelagert, die an den Unterkanten der Zahnstange 5 und der Sichtblende 18 laufen.The carriage is supported in its lower section in the region of the rack 5 (FIG. 2) and driven at the same time. The rack 5 is covered over its entire length on its side facing the steps by a screen 16 (not shown in FIG. 1). On a strut 18 fastened to the base plate 9 are two lower support rollers 20 rotatably mounted, which run on the lower edges of the rack 5 and the screen 18.

Ein Elektromotor 22 treibt über ein Getriebe 23 ein in die Zahnstange eingreifendes Zahnrad 24 an, das an der Sichtblende 16 eine seitliche Führung besitzt. Der Schlitten stützt sich mit einer oberen Stützrolle 26 an der Außenseite der Sichtblende 16 ab.An electric motor 22 drives a gearwheel 24 which engages in the rack and has a lateral guide on the screen 16 via a gearbox 23. The carriage is supported by an upper support roller 26 on the outside of the screen 16.

Der massive Fanghebel 28 (Fig.2 und 3) ist auf zwei mit der Grundplatte 9 fest verbundenen Lagerplatten 30 mit einem Lagerbolzen 31 schwenkbar gelagert und besitzt eine Länge, die etwa dem mittleren Abstand zweier Sprossen 7 entspricht. Der zweiarmige Fanghebel 28 wird durch eine Zugfeder 34, die einerseits an einem Haltestift 35 der einen Lagerplatte 30 befestigt und andererseits in eines der Löcher der Lochreihe 36 eingehängt ist, in der in Fig .3 mit ausgezogener Linie dargestellten Lage gehalten.The massive catch lever 28 (FIGS. 2 and 3) is pivotably mounted on two bearing plates 30, which are fixedly connected to the base plate 9, and has a length which corresponds approximately to the mean distance between two rungs 7. The two-armed catch lever 28 is held in the position shown by the solid line in FIG. 3 by a tension spring 34, which is fastened on the one hand to a holding pin 35 of the one bearing plate 30 and on the other hand is suspended in one of the holes in the row of holes 36.

An der Stirnseite 38 des talseitigen Fanghebelarms 39 ist eine spitzwinkelige Aussparung 40 eingearbeitet, die ein sicheres Einrasten des Fanghebelarms 39 an der Sprosse 7a garantiert. An der Stirnseite 42 des bergseitigen Fanghebelarms 41 ist ein Fortsatz 43 vorgesehen, der bei Schwenkung des Fanghebels 28 in die Raststellung einen Schalter 44 zur Abschaltung der Stromversorgung des Elektromotors 22 (Fig. 1) und gegebenenfalls zur Auslösung eines Alarmsignals dient. Der bergseitige Fanghebelarm 41 weist auf seiner den Sprossen 7 zugewandten Seite einen nockenartigen Vorsprung 45 auf, der den Fanghebel 28 bei einer Talfahrt des Schlittens an jeder Sprosse 7 so verschwenkt, daß der talseitige Fanghebelarm 39 in den Zwischenraum zur nächsten Sprosse 7 eintritt. Der maximale Winkel des Einschwenkvorgangs wird bestimmt durch die maximale Erhöhung des Vorsprungs 45 beim Entlanggleiten an der Längsseite 46 der Sprosse 7. Sowie der Scheitel des Vorsprungs 45 bei der Abwärtsbewegung in Richtung des Pfeiles 32 die Längsseite 46 der Sprosse 7 verläßt, wird die Rückstellbewegung des Fanghebels 28 unter der Wirkung der Zugfeder 34 einsetzen. Wegen der Massenträgheit des verhältnismäßig massiven Fanghebels 28, wird für die Rückschwenkung des Fanghebels eine bestimmte Zeit benötigt, da diese Bewegung nach der Freigabe des Vorsprungs an der Sprosse 7 bei Null beginnt und mit der durch die Kraft der Zugfeder 34 bestimmten Beschleunigung ansteigt. Ist jedoch die Geschwindigkeit der Abwärtsbewegung größer als die festgelegte Normalgeschwindigkeit, wird der Fanghebel 28 den Bereich zwischen den Sprossen 7 und 7a (Fig.3) noch nicht verlassen haben und auf die Sprosse 7a auftraffen und die in Fig.3 gestrichelt eingezeichnete Lage einnehmen.On the front side 38 of the catch arm 39 on the valley side, an acute-angled recess 40 is worked in, which guarantees that the catch arm 39 will snap securely into the rung 7a. On the end face 42 of the mountain-side catch lever arm 41, an extension 43 is provided which, when the catch lever 28 is pivoted into the latching position, serves a switch 44 for switching off the power supply to the electric motor 22 (FIG. 1) and possibly for triggering an alarm signal. The mountain-side catch lever arm 41 has on its side facing the rungs 7 a cam-like projection 45 which pivots the catch lever 28 when the slide descends on each rung 7 in such a way that the valley-side catch lever arm 39 enters the space between the next rung 7. The maximum angle of the pivoting-in process is determined by the maximum increase of the projection 45 when sliding along the long side 46 of the rung 7. As the apex of the projection 45 leaves the longitudinal side 46 of the rung 7 during the downward movement in the direction of arrow 32, the return movement of the catch lever 28 will begin under the action of the tension spring 34. Because of the inertia of the relatively massive catch lever 28, a certain time is required for the pivoting back of the catch lever, since this movement begins after the release of the projection on the rung 7 at zero and increases with the acceleration determined by the force of the tension spring 34. However, if the speed of the downward movement is greater than the defined normal speed, the catch lever 28 will not have left the area between the rungs 7 and 7a (FIG. 3) and will apply it to the rung 7a and assume the position shown in broken lines in FIG.

Der wesentliche Vorteil der erfindungsgemäßen Fangvorrichtung ist die besonders kostengünstige und betriebssichere konstruktive Lösung, die keine weitere zusätzliche Überwachungseinrichtung erforderlich macht.The main advantage of the safety device according to the invention is the particularly cost-effective and reliable design solution that does not require any additional monitoring device.

Claims (5)

Fangvorrichtung für einen an einem Geländer geführten Schlitten, an dem ein zweiarmiger, quer zur Fahrtrichtung schwenkbar gelagerter Fanghebel vorgesehen ist, der bei unzulässig erhöhter Geschwindigkeit den Schlitten durch Einschwenken gegen quer zur Fahrtrichtung am Geländer angeordnete Sprossen stoppt, dadurch gekennzeichnet, daß a) eine Zugfeder (34) am Fanghebel (28) exzentrisch zu seiner Schwenkachse so angreift, daß die Stirnseite (38) des talseitigen Fanghebelarms (39) gegen die Wirkung der Zugfeder (34) in den Bereich der Sprossen (7) einschwenken kann, b) der bergseitige Fanghebelarm (41) an der den Sprossen (7) zugewandten Seite einen nockenartigen Vorsprung (43) aufweist, der den Fanghebel (28) bei einer Talfahrt an jeder Sprosse (7) so verschwenkt, daß der talseitige Fanghebelarm (39) in den Zwischenraum zur nächsten Sprosse (7) eintritt und c) die Zugfeder (34) so bemessen ist, daß die durch die Zugfeder bewirkte Rückschwenkung des Fanghebels (28) durch seine Massenträgheit so verzögert wird, daß beim Überschreiten der Normalgeschwindigkeit der talseitige Fanghebelarm (39) noch auf die nächste Sprosse trifft. Safety gear for a carriage guided on a railing, on which a two-armed safety lever is provided, which is pivotably mounted transversely to the direction of travel and which stops the carriage by swiveling against rungs arranged transversely to the direction of travel on the railing at impermissibly high speed, characterized in that a) a tension spring (34) engages the catch lever (28) eccentrically to its pivot axis so that the end face (38) of the valley-side catch lever arm (39) can pivot against the action of the tension spring (34) into the area of the rungs (7), b) the mountain-side catch lever arm (41) on the side facing the rungs (7) has a cam-like projection (43) which pivots the catch lever (28) on each rung (7) during a descent so that the valley-side catch lever arm (39) enters the space between the next rung (7) and c) the tension spring (34) is dimensioned such that the pivoting back of the catch lever (28) caused by the tension spring is delayed by its inertia so that when the normal speed is exceeded the valley catch arm (39) still meets the next rung. Fangvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Stirnseite (38) des talseitigen Fanghebelarms (39) eine spitzwinkelige Aussparung (40) aufweist.Safety gear according to claim 1, characterized in that the end face (38) of the safety arm arm (39) on the valley side has an acute-angled recess (40). Fangvorrichtung nach den Ansprüchen 1 und 2, dadruch gekennzeichnet, daß im mittleren Bereich des Fanghebels (28) exzentrisch zum Lagerboden (31) mehrere in Reihe angeordnete Bohrungen einer Lochreihe (36) für die Federbefestigung vorgesehen sind.Safety gear according to claims 1 and 2, characterized in that in the central area of the safety lever (28) eccentrically to the bearing base (31) several bores of a row of holes (36) arranged in series are provided for the spring fastening. Fangvorrichtung nach den Ansprüchen 1 bis 3, dadurch gekennzeichnet, daß die Stirnseite (42) des bergseitigen Fanghebelarms (41) einen Fortsatz (43) zur Betätigung eines Schalters (44) in der Sperrstellung des Fanghebels aufweist.Safety gear according to claims 1 to 3, characterized in that the end face (42) of the mountain-side safety lever arm (41) has an extension (43) for actuating a switch (44) in the locked position of the safety lever. Fangvorrichtung nach den Ansprüchen 1 bis 4, dadurch gekennzeichnet, daß die Länge des Fanghebels (28) dem mittleren Abstand der Sprossen (7) entspricht.Safety gear according to claims 1 to 4, characterized in that the length of the safety lever (28) corresponds to the mean distance between the rungs (7).
EP91101901A 1990-02-12 1991-02-11 Safety catch for a carriage guided along stair rail Expired - Lifetime EP0442429B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4004190 1990-02-12
DE4004190 1990-02-12

Publications (3)

Publication Number Publication Date
EP0442429A2 true EP0442429A2 (en) 1991-08-21
EP0442429A3 EP0442429A3 (en) 1992-02-19
EP0442429B1 EP0442429B1 (en) 1994-11-30

Family

ID=6399927

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Application Number Title Priority Date Filing Date
EP91101901A Expired - Lifetime EP0442429B1 (en) 1990-02-12 1991-02-11 Safety catch for a carriage guided along stair rail

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EP (1) EP0442429B1 (en)
DE (1) DE59103604D1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6659230B1 (en) * 2000-01-17 2003-12-09 Stannah Stairlifts Limited Safety brake for stairlifts

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102936959B (en) * 2012-11-28 2014-11-19 无锡威华电焊机制造有限公司 Device for adjusting section distance of steel bar truss

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4046226A (en) * 1976-07-08 1977-09-06 Flinchbaugh-Murray Corporation Elevator system for transporting wheelchair patients
DE2719120C2 (en) * 1977-04-29 1987-08-20 Kleindienst GmbH, 8900 Augsburg lift
EP0137577A1 (en) * 1983-10-10 1985-04-17 Antony Stopher A stair lift
GB8531094D0 (en) * 1985-12-18 1986-01-29 Ease Ltd Stairlift

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6659230B1 (en) * 2000-01-17 2003-12-09 Stannah Stairlifts Limited Safety brake for stairlifts

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Publication number Publication date
EP0442429B1 (en) 1994-11-30
EP0442429A3 (en) 1992-02-19
DE59103604D1 (en) 1995-01-12

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