EP1832709A1 - Gelenkköpfe für umwandelbare Leitern - Google Patents

Gelenkköpfe für umwandelbare Leitern Download PDF

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Publication number
EP1832709A1
EP1832709A1 EP07003861A EP07003861A EP1832709A1 EP 1832709 A1 EP1832709 A1 EP 1832709A1 EP 07003861 A EP07003861 A EP 07003861A EP 07003861 A EP07003861 A EP 07003861A EP 1832709 A1 EP1832709 A1 EP 1832709A1
Authority
EP
European Patent Office
Prior art keywords
plane
transformable
joint heads
heads
ladder
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
EP07003861A
Other languages
English (en)
French (fr)
Other versions
EP1832709B1 (de
Inventor
Jean-Paul Merigot
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.)
Macc SA
Original Assignee
Macc SA
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
Application filed by Macc SA filed Critical Macc SA
Publication of EP1832709A1 publication Critical patent/EP1832709A1/de
Application granted granted Critical
Publication of EP1832709B1 publication Critical patent/EP1832709B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C1/00—Ladders in general
    • E06C1/02—Ladders in general with rigid longitudinal member or members
    • E06C1/32—Ladders with a strut which is formed as a ladder and can be secured in line with the ladder
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C1/00—Ladders in general
    • E06C1/02—Ladders in general with rigid longitudinal member or members
    • E06C1/14—Ladders capable of standing by themselves
    • E06C1/16—Ladders capable of standing by themselves with hinged struts which rest on the ground
    • E06C1/18—Ladders capable of standing by themselves with hinged struts which rest on the ground with supporting struts formed as ladders

Definitions

  • Patent 2,391,349 - MULLCA - describes a piece of articulation for transformable ladder head hinge and allowing the sliding of two planes between them and the double scaling at various levels to compensate for unevenness.
  • Patent 2,428,734 - GENRIES Pierre - describes a transformable scale articulation that can accommodate any step.
  • Patent 2,521,208 - Ets GUBRI - Jean BIANCHI describes a transformable ladder accessory that is removable and can be placed at the level of the desired step to double-scale articulation and thus cause a shift between the planes to accept unevenness.
  • the present invention aims to remedy this defect and thus ensure the safety of the user by requiring, when scaling double, the parts to be in agreement so to be well engaged with each other; Intermediate or other situations are not possible, so the scale can not open up and duplicate itself.
  • the heads of joints have shapes that do not allow the spacing planes if they are not in front of rungs or a stud.
  • the pads are located on the inner face of a plane and are in the middle of the interval between rungs.
  • the pads have the same rating as a rung and can therefore be housed in the form provided on the plan to receive the rung. This feature therefore allows an offset setting every half scale interval, a more accurate offset is thus obtained.
  • the hinge heads attached to the ends of the right and left uprights of a plane therefore a right hinge head and a left hinge head, allow two movements to the other plane namely, the sliding and the hinge. opening for double scaling.
  • the ladder length is obtained by moving from one plane to the other.
  • the holding in position is made by hooks that engage in a step, a folded lock prevents disengagement.
  • These hooks also serve as limiters running behind the scenes by coming up against the heads of joints. This race limitation being the guarantor of a minimum commitment of a plan on the other necessary for the physical strength of the product, so the safety of the user.
  • Figure 1 shows in perspective a foldable transformable scale.
  • Figure 2 shows in perspective an open transformable scale at the second pad.
  • FIG. 3 shows in perspective, left view, a scale convertible into open double position at the second pad.
  • FIG. 4 represents in perspective, seen from the right, a ladder convertible into an open double position at the level of the second rung.
  • FIG. 5 represents a transformable ladder and its stop system limiting deployment in sliding position.
  • Figure 6 shows, in perspective, a transformable scale deployed behind the scenes.
  • Figure 7 shows a ladder whose duplicate deployment is not possible.
  • Figure 8 shows the left and right joint heads without the scale planes.
  • Figure 9 shows, from the side, a convertible scale deployed in duplicate with a drop in the supports of the feet of the ladder.
  • the articulation heads (3) (3 ') slidably guide the plane (1) on the plane (2) by means of shapes (9) (9') and lips (13). (13 ') (14) (14') present on these same heads of joints (3) (3 ')
  • the planes (1) (2) articulate with each other to convert the transformable ladder (12) of a double ladder slide on the joint heads (3) (3 ' ) when one of the rungs (4) or studs (5) (5 ') integral with the uprights (17) (18) of the plane (1) of the transformable ladder (12) coincide with the outer forms (15) (15). ') (16) (16') provided on said joint heads (3) (3 ').
  • the pads (5) (5 ') integral with the inner face of the uprights (17) (18) of the plane (1) are located in the middle of the interval steps (4).
  • this arrangement makes it possible to make shifts of half a step transformable ladder (12) and to obtain the settings more adapted to the unevennesses.
  • the studs (5) (5 ') can be located over the entire height of the respective uprights (17) (18) or on the upper part of the transformable ladder (12) since it is the only one frequently used for staggered level.
  • the hook (6) equipped with its rocking latch (19) and its symmetrical one (6 ') not equipped with a rocking latch serve as a stroke limiter for the sliding deployment of the plane (1 ) on the plane (2) because they respectively abut against the heads of joints (3) (3 ') on the outer forms (16) (16').
  • the returns (10) (10 ') (11) (11') rest on the uprights (20) (21) of the plane (2), so as to stiffen the scale transformable into double ladder position.

Landscapes

  • Ladders (AREA)
EP07003861.7A 2006-03-10 2007-02-26 Gelenkköpfe für umwandelbare Leitern Active EP1832709B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0602244A FR2898381B1 (fr) 2006-03-10 2006-03-10 Tetes d'articulations pour echelles transformables

Publications (2)

Publication Number Publication Date
EP1832709A1 true EP1832709A1 (de) 2007-09-12
EP1832709B1 EP1832709B1 (de) 2013-11-27

Family

ID=37455860

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07003861.7A Active EP1832709B1 (de) 2006-03-10 2007-02-26 Gelenkköpfe für umwandelbare Leitern

Country Status (4)

Country Link
EP (1) EP1832709B1 (de)
ES (1) ES2440819T3 (de)
FR (1) FR2898381B1 (de)
PT (1) PT1832709E (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2476283A (en) * 2009-12-18 2011-06-22 Keith Phillips Attachment device to secure a ladder to a scaffold
EP2811104A1 (de) * 2013-06-04 2014-12-10 Tubesca-Comabi Veränderbares Leitersystem mit Niveauausgleich
CN105221056A (zh) * 2014-06-03 2016-01-06 张仕杰 可强化支撑功能的工作梯

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1837187A (en) * 1929-06-24 1931-12-22 Percy H Allen Convertible ladder
US3100552A (en) * 1961-02-21 1963-08-13 Hopfeld Henry Convertible ladder
FR2391349A1 (fr) 1977-05-16 1978-12-15 Mullca Piece d'articulation pour echelle transformable
FR2428734A1 (fr) 1978-06-12 1980-01-11 Genries Pierre Articulation d'echelle
FR2521208A1 (fr) 1982-02-11 1983-08-12 Gubri Sa Ets L Dispositif accessoire pour echelles transformables
DE8811069U1 (de) * 1988-09-01 1988-11-10 Krause-Werk Gmbh & Co Kg, 6320 Alsfeld Verbindungselement

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1837187A (en) * 1929-06-24 1931-12-22 Percy H Allen Convertible ladder
US3100552A (en) * 1961-02-21 1963-08-13 Hopfeld Henry Convertible ladder
FR2391349A1 (fr) 1977-05-16 1978-12-15 Mullca Piece d'articulation pour echelle transformable
FR2428734A1 (fr) 1978-06-12 1980-01-11 Genries Pierre Articulation d'echelle
FR2521208A1 (fr) 1982-02-11 1983-08-12 Gubri Sa Ets L Dispositif accessoire pour echelles transformables
DE8811069U1 (de) * 1988-09-01 1988-11-10 Krause-Werk Gmbh & Co Kg, 6320 Alsfeld Verbindungselement

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2476283A (en) * 2009-12-18 2011-06-22 Keith Phillips Attachment device to secure a ladder to a scaffold
EP2811104A1 (de) * 2013-06-04 2014-12-10 Tubesca-Comabi Veränderbares Leitersystem mit Niveauausgleich
CN105221056A (zh) * 2014-06-03 2016-01-06 张仕杰 可强化支撑功能的工作梯

Also Published As

Publication number Publication date
FR2898381A1 (fr) 2007-09-14
PT1832709E (pt) 2014-01-10
FR2898381B1 (fr) 2009-10-02
EP1832709B1 (de) 2013-11-27
ES2440819T3 (es) 2014-01-30

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