EP0296916A1 - Modulares Bauelement, insbesondere für Leitern oder Gerüste - Google Patents

Modulares Bauelement, insbesondere für Leitern oder Gerüste Download PDF

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Publication number
EP0296916A1
EP0296916A1 EP88401394A EP88401394A EP0296916A1 EP 0296916 A1 EP0296916 A1 EP 0296916A1 EP 88401394 A EP88401394 A EP 88401394A EP 88401394 A EP88401394 A EP 88401394A EP 0296916 A1 EP0296916 A1 EP 0296916A1
Authority
EP
European Patent Office
Prior art keywords
scaffolding
cooperate
elements
ladder
fixing
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.)
Withdrawn
Application number
EP88401394A
Other languages
English (en)
French (fr)
Inventor
Gérard Saby
Frédéric Lemercier
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
Priority claimed from FR8708153A external-priority patent/FR2616468B1/fr
Priority claimed from FR8801529A external-priority patent/FR2626933A1/fr
Application filed by Individual filed Critical Individual
Publication of EP0296916A1 publication Critical patent/EP0296916A1/de
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C7/00—Component parts, supporting parts, or accessories
    • E06C7/16—Platforms on, or for use on, ladders, e.g. liftable or lowerable platforms
    • E06C7/165—Platforms on, or for use on, ladders, e.g. liftable or lowerable platforms specially adapted to be fixed to only one rung
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G1/00—Scaffolds primarily resting on the ground
    • E04G1/14—Comprising essentially pre-assembled two-dimensional frame-like elements, e.g. of rods in L- or H-shape, with or without bracing
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G7/00—Connections between parts of the scaffold
    • E04G7/02—Connections between parts of the scaffold with separate coupling elements
    • E04G7/06—Stiff scaffolding clamps for connecting scaffold members of common shape
    • E04G7/20—Stiff scaffolding clamps for connecting scaffold members of common shape for ends of members only, e.g. for connecting members in end-to-end relation
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G7/00—Connections between parts of the scaffold
    • E04G7/30—Scaffolding bars or members with non-detachably fixed coupling elements
    • E04G7/301—Scaffolding bars or members with non-detachably fixed coupling elements for connecting bars or members which are parallel or in end-to-end relation
    • 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
    • E06C1/04—Ladders for resting against objects, e.g. walls poles, trees
    • E06C1/08—Ladders for resting against objects, e.g. walls poles, trees multi-part
    • E06C1/10—Sections fitted end to end
    • 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
    • E06C1/38—Special constructions of ladders, e.g. ladders with more or less than two longitudinal members, ladders with movable rungs or other treads, longitudinally-foldable ladders
    • E06C1/39—Ladders having platforms; Ladders changeable into platforms
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C7/00—Component parts, supporting parts, or accessories
    • E06C7/42—Ladder feet; Supports therefor
    • E06C7/44—Means for mounting ladders on uneven ground

Definitions

  • the present invention relates to a modular construction element, in particular a ladder or scaffolding.
  • an element scaffold nestable characterized in that it comprises two elements connected to each other end to end by a removable seal comprising at the end of the first of the elements in question, a socket which receives with possibility of release the end of the second element, and rotatably mounted on this second element a collar engaged by screwing on the element forming the sleeve and which, when the engagement by screwing the collar with the sleeve is tight, biases the second element towards the first.
  • the object of the invention is therefore to solve these problems by proposing a modular construction element which is simple, reliable, of a low cost price, of a convenient maintenance and which makes it possible to obtain any form of scale. or scaffolding, while meeting the standards in force in this area.
  • the invention relates to a modular construction element, in particular of ladder or scaffolding, of the type comprising at least two uprights between which extends at least one cross member, characterized in that each end of the uprights is threaded and adapted to cooperate with a ring for fixing said element to at least one adjacent member.
  • the invention also relates to a simple ladder, characterized in that it comprises at least two elements as described above.
  • the invention also relates to a multiple scale characterized in that it comprises at least two simple scales as described above, fixed to each other in their upper part by means of joint.
  • the invention also relates to a scaffolding characterized in that it comprises two vertical climbing planes and a roughly horizontal work plan, consisting of elements as described above and connected to each other others by means of articulation.
  • a modular construction element according to the invention comprises at least two uprights 1,2 for example parallel, between which extends at least one cross member 3.
  • a second crosspiece 4 parallel to the first extends between the two uprights 1 and 2.
  • the ends of the uprights have threaded portions 1a, 1b and 2a, 2b respectively which, as will be seen below, are adapted to cooperate with the internal thread of an element connecting ring modular to at least one adjacent member.
  • Pins 5, 6, 7 and 8 are also provided at each end of the uprights. These nipples are for example adapted to cooperate with recesses of corresponding shape formed in the ends of the adjacent elements or members to ensure correct centering and positioning of the different elements or members between them.
  • nipples can for example be of cylindrical or frustoconical shape.
  • nipples of frustoconical shape adapted to cooperate with recesses of complementary shape has the advantage of making it possible to make up for the clearances at the level of the connections between elements, these clearances being able to cause a significant deflection of large assemblies.
  • FIG. 2 An example of an adjacent element is shown in Fig. 2 where it can be seen that the element 9 comprises uprights 10 and 11 having at each of their ends recesses for example 12 and 13 for receiving the pins of the ends of the element shown in FIG. 1.
  • FIG. 3 The fixing of two adjacent elements one on the other is illustrated in FIG. 3, in which two modular elements 14 and 15 of different design have been shown, the pins 16 and 17 of the modular element 15 engaging in the corresponding recesses in the ends of the uprights of the element 14, while rings 18 and 19 are screwed onto the corresponding threaded portions of the two elements, so as to lock the two elements in position relative to the 'other.
  • means for locking the ring in position can also be provided, such as for example pins passing through recesses in the ring and in the corresponding amount of a modular element.
  • the support bar 23 comprises for example at each of its ends a tubular sleeve 28,29 internally threaded and adapted to cooperate with a threaded rod 30 and 31 having in its lower part a support shoe 32 and 33 of a type known per se and adapted to ensure good stability of the assembly on the ground.
  • actuating means such as for example a crank, can be provided in the upper part of the threaded rods 30 and 31.
  • the base means can consist of shoes 34 and 35 (Fig. 5) fixed by means of rings 36 and 37 on the lower part of the uprights of an element. These shoes can for example be articulated in a manner known per se on the rings so as to provide good support whatever the configuration of the ground.
  • FIG. 6 which comprises two planes 38 and 39 connected in their upper part by articulation means 40.
  • articulation means 40 can for example occupy four stable positions as illustrated in Fig.7, in which it can be seen that the articulation means 40 comprise an articulation 41 proper and which will be described in more detail below and two branches fixing 42, 43 adapted to cooperate with fixing rings and corresponding ends of the uprights of the elements. Indeed, these branches have threaded portions 42a and 43a respectively and centering pins 42b and 43b for their fixing and centering.
  • the two branches 42 and 43 may have angles of 0 °, 15 °, 25 ° or 90 ° between them.
  • the position in which the two branches are parallel to each other corresponds for example to the storage position of the double ladder.
  • the positions in which the two branches of the articulation means 40 make angles between them of 15 ° or 25 ° correspond to standard positions in terms of double ladder and the position at 90 ° corresponds as will be seen later on to use in scaffolding.
  • These articulation means can be constituted by two half-shells 44 and 45 illustrated in FIGS. 8 and 9 respectively. These two half-shells comprise the two branches 42 and 43 respectively described with reference to Fig.7. It should however be noted that the branch 42 includes a shoulder 46 whose function will be defined in more detail below.
  • the half-shells 44 and 45 comprise plates respectively 47 and 48, mounted movable in rotation relative to each other and comprising projecting parts and recesses adapted to cooperate with each other in order to define the four previously mentioned stable positions. It goes without saying that these projecting parts and these recesses can have different configurations in order to obtain these different stable positions or others.
  • one of the projecting parts provided on the plate 47 of the half-shell 44, and more particularly the projecting part 49 comprises a portion 50 whose height is less than that of the other projecting parts, the function of this portion being described in more detail below.
  • the modular elements, the articulation means and the base means which have just been described can enter into the construction of a scaffolding.
  • hinge means 104 are provided such as those described with reference to FIGS. 7, 8 and 9, allowing to fix in a roughly horizontal plane, a work platform.
  • a second ladder B is provided at the other end of the work platform.
  • This working platform comprises an adapter plate 105 (shown in more detail in FIG. 12) comprising two recesses 106, 107 in which threaded portions 108 and 109 engage articulation means 104. These threaded portions open out on the other side of the plate, so as to allow, by means of rings or nuts, the fixing of the plate on the articulation means 104, the recess of the corresponding branch of the articulation means, similar to the step 46 (Fig. 8), abutting against the edge of the corresponding recess in the plate.
  • the adapter plate also includes two threaded pins 110 and 111 comprising pins 112 and 113 adapted to engage in recesses formed in corresponding ends of the uprights 114 and 115 of an element 116 for supporting the floor of the platform. job. It should be noted that the spacing between the pins 110 and 111 corresponds for example to a standard width in terms of scaffolding working platform.
  • fixing parts 118 may also be provided at the articulation means 104 to ensure the fixing of means forming guardrails 119 on each side of the working platform.
  • a fastener 118 is shown in more detail in Fig. 11.
  • This fixing piece 118 comprises a first portion 120 adapted to engage between the two half-shells of the articulation means 104 at the level of the portion corresponding to the portion 50 (Fig.8) thereof.
  • This first portion 120 has a slot 120a adapted to engage for example around the axis of articulation of the articulation means 104.
  • the fixing piece 118 also comprises a second portion 121 threaded and adapted to cooperate with a ring 122 (Fig.10) for fixing the means 119 forming a guardrail on the articulation means.
  • the fixing piece 118 (Fig.11) and more particularly the second portion 121 thereof, may also include a recess 123 adapted to receive a stud 119a (Fig.10) of the means forming a guardrail 119 so as to improve overall security.
  • the adapter plate 105 has a height such that at at least a portion of it protrudes above the surface of the floor of the working platform so as to constitute a flange at each end of the working platform this again in order to improve the safety of the assembly.
  • FIG. 13 an element 124, the ends of the uprights 125 and 126 of which are threaded and include centering pins 127, 128, 129, 130.
  • the cross members 131 and 132 thereof are constituted by three portions respectively 131a, 131b, 131c and 132a, 132b, 132c, the portions 131b and 132b can be nested in the portions 131a, 131c and 132a, 132c respectively to adapt the distance between the amounts to the user's wish .
  • Locking means such as for example screws 133, are provided in each portion 131a, 131c, 132a, 132c to ensure that the various portions are locked in position.
  • an element 134 is shown, the amounts of which are similar to those of the element described in FIG. 2, that is to say that they have at each of their ends a recess for receiving the nipples of the complementary elements and whose crosspieces are similar to those of the element which has just been described with reference to FIG. 13. This element shown in FIG. 14 will not be described in more detail.
  • the modular floor elements such as the element 117 shown in Fig.10 can be constituted by elements such as that shown in Fig.15.
  • This element 135 has a bearing surface 136 and two lateral edges 137 and 138.
  • this element 135 on the support elements is ensured by means of lateral projecting parts, for example 139 and 140 bearing on the uprights of the corresponding support elements.
  • these floor elements can also be constituted by elements such as that shown in FIGS. 16 and 17, in which the floor element 141 comprises fixed, on the lower surface of the bearing surface 141a, pins centering 142, 143, 144 comprising slots 142a, 143a, 144a respectively, adapted to engage on the crosspieces of the corresponding support elements
  • the pins 143, 144 are arranged symmetrically on either side of the longitudinal axis of the floor element and that the element 142 is in turn arranged on one side of the latter so as to always bear on one of the portions 131a, 131c, 132a, 132c of the crosspieces of the elements described with reference to FIG. 13 or 14, so as to always obtain a correct positioning of the corresponding floor element.
  • portion 131b, 132b (Fig. 13) of the crosspiece has a section of dimension smaller than the portions 131a, 131c, 132a, 132c, which would adversely affect the stability of the corresponding floor element if it was supported on this portion of the crosspiece.
  • the upper surface of the floor elements can have any suitable means allowing it to impart certain anti-skid properties, this again in order to improve the safety of users.
  • stiffening means 145 are provided between the lateral scales A and B of the scaffolding.
  • These means are advantageously constituted by two tubular pieces 146 and 147 which are telescopic. one inside the other and having at each end fixing means 148, 149 on the lateral ladders.
  • the parts 146 and 147 advantageously have on their upper and lower surfaces corresponding recesses adapted to cooperate with claws 150, 151 and 152 of a locking member 153.
  • This locking member makes it possible to block the relative position of the two parts 146 and 147 relative to each other, when the scaffolding is mounted, so as to give it increased rigidity.
  • the member 153 has for example a recess 154 facilitating the gripping of this member by the user and that it may also include means for locking in position, constituted for example by a pin or a screw.
  • This type of member 153 can also be used for blocking the railing means in position when they are telescopic to adapt their length to the length of the scaffolding.
  • a stabilizing bar 155 of structure similar to the means 145 can also be provided in the lower part of the scaffolding.
  • the means forming a guardrail 119 may for example be constituted by a heald as shown in this Fig. 10 or by any other standardized railing, the fixing means of which are also constituted by a threaded portion and a ring adapted to cooperate with a threaded part of a fixing part 118 of these means forming a railing on the articulation means and therefore on the rest of the scaffolding.
  • a removable step can also be arranged on a cross member for example of a ladder of the type comprising two uprights of which only one, 201, is shown in this figure, between which s extends at least one cross member 202 having for example a non-circular section, as square as shown in this figure.
  • the step 203 has a bearing surface 204 for the user, under which is provided a base 205 for fixing the step on the crosspiece 202 of the ladder.
  • This base advantageously comprises a slot 206 for receiving the cross member 202 of the ladder.
  • the slot 206 has a width slightly greater than the width of the cross member 202 of the ladder so as to allow the engagement of the base around this cross member and the rotation blocking of the step relative to the crosses and to the rest of the scale.
  • the step 209 comprises a bearing surface 210 for the user and a base 211 comprising a slot 212 in which a cross member 213 of a ladder can engage comprising two uprights of which only one, 214, and shown in this figure.
  • the cross member has a circular section and in this case, the locking means in the walking position relative to the rest of the ladder can be constituted by housings 215, 216 (Fig. 20) for receiving the uprights. of the ladder, formed on either side of the step 209 in order to block this step in rotation relative to them.
  • the establishment and release of the step are therefore done by tilting it relative to the axis of the crosspiece.
  • the step can be made of any suitable material such as aluminum and adapt to constructions other than ladders such as, for example, scaffolding uprights.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Ladders (AREA)
EP88401394A 1987-06-11 1988-06-08 Modulares Bauelement, insbesondere für Leitern oder Gerüste Withdrawn EP0296916A1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR8708153A FR2616468B1 (fr) 1987-06-11 1987-06-11 Element modulaire de construction, notamment d'echelle ou d'echafaudage
FR8708153 1987-06-11
FR8801529A FR2626933A1 (fr) 1988-02-09 1988-02-09 Marche amovible notamment pour echelle
FR8801529 1988-02-09

Publications (1)

Publication Number Publication Date
EP0296916A1 true EP0296916A1 (de) 1988-12-28

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP88401394A Withdrawn EP0296916A1 (de) 1987-06-11 1988-06-08 Modulares Bauelement, insbesondere für Leitern oder Gerüste

Country Status (2)

Country Link
US (1) US4907675A (de)
EP (1) EP0296916A1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0360049A1 (de) * 1988-09-01 1990-03-28 KRAUSE-WERK GMBH & CO. KG Leiterpodest
FR2666620A1 (fr) * 1990-09-12 1992-03-13 Santos Pierre Echelle pliante.
WO1993020306A1 (en) * 1992-03-27 1993-10-14 Gunnar Strand Tension - and pressure - absorbing construction components
FR2908143A1 (fr) * 2006-11-06 2008-05-09 Layher Sas Soc Par Actions Sim Systeme d'echafaudage metallique
WO2011003403A2 (de) 2009-07-10 2011-01-13 Poly-Tools Bennewart Gmbh Baukastenstecksystem

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GB9127100D0 (en) * 1991-12-20 1992-02-19 Sgb Holdings Ltd Improvements in or relating to a shoring system
GB2262562B (en) * 1991-12-20 1994-10-19 Sgb Holdings Ltd Improvements in or relating to a shoring system
GB2262561B (en) * 1991-12-20 1995-05-17 Sgb Holdings Ltd Improvements in or relating to a shoring leg
GB2265921B (en) * 1992-04-08 1995-05-24 Sgb Holdings Ltd Improvements in or relating to a shoring leg
GB2291457B (en) * 1994-07-12 1997-08-06 Dyfrig Thomas Scaffolding
AT406178B (de) * 1994-09-07 2000-03-27 Soyka Heli Forstleiter
US6129179A (en) * 1999-09-10 2000-10-10 Rooney; William V. Laterally extensible ladder
US20020117355A1 (en) * 2001-02-20 2002-08-29 Bowman William Kenneth Telescopic leg ladder
KR20030038216A (ko) * 2001-11-10 2003-05-16 (주)이도전자 조립식 사다리
US20110088971A1 (en) * 2002-09-23 2011-04-21 Herbert Jaffe Collapsible step and extension ladder
US6935463B2 (en) * 2003-09-09 2005-08-30 K & B Products, Inc. Safety support for ladders
CN101050687B (zh) * 2007-05-22 2011-02-23 王克诚 可伸缩梯子及其直立组合式梯子、平台高凳和人字梯
DE102009013186B4 (de) * 2008-12-19 2015-05-28 Senvion Se Turm einer Windenergieanlage
US8800718B2 (en) * 2008-12-30 2014-08-12 Allred & Associates Inc. Ultra lightweight segmented ladder/bridge system
US8448748B2 (en) 2008-12-30 2013-05-28 Allred & Associates, Inc. Ultra lightweight segmented ladder/bridge system
DE102010005974B4 (de) 2010-01-28 2022-09-15 Hymer-Leichtmetallbau Gmbh & Co. Kg Einstellspindel für eine Leitertraverse mit Schnelleinstellung
US8443938B2 (en) * 2010-11-04 2013-05-21 Ardisam, Inc. Hunting ladder stand having collapsible ladder segments
CN102777020A (zh) * 2012-07-27 2012-11-14 樊荣 一种方便安装的脚手架
US8651259B1 (en) * 2013-07-12 2014-02-18 Berle G. Blehm Ladder bridge apparatus
AU2017202925A1 (en) * 2016-05-17 2017-12-07 Werner Co. Ladder leveler and method
US9850653B1 (en) * 2016-07-06 2017-12-26 Par Systems, Inc. Modular elevator shaft assembly and method for making the same
EP3323731B1 (de) * 2016-11-17 2020-04-22 Airbus Operations S.L. Aufzugssystem für eine hilfsstromeinheit
CN108533168A (zh) * 2018-06-08 2018-09-14 浙江梅轮电梯股份有限公司 一种模块化电梯井道爬梯
CN110886575A (zh) * 2018-09-11 2020-03-17 中国石油天然气股份有限公司 立柱、扶梯及平台
AT522126A1 (de) * 2019-02-07 2020-08-15 Zugschwert Georg Tritt für eine Leiter

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US1890763A (en) * 1932-02-19 1932-12-13 Russell C Wilson Portable step for a ladder
US2528317A (en) * 1948-04-07 1950-10-31 Allen F Newman Footrest for stepladders
US2755981A (en) * 1952-10-01 1956-07-24 Omer H Edwards Roof ladder
FR1170345A (fr) * 1957-03-28 1959-01-13 Perfectionnements apportés aux échafaudages métalliques
FR1181679A (fr) * 1957-08-27 1959-06-17 Système d'échafaudage tubulaire télescopique
FR1293968A (fr) * 1961-07-03 1962-05-18 Rohren Und Roheisengrosshandel échafaudage démontable
US3276543A (en) * 1964-10-15 1966-10-04 Kanoza Bernard Detachable foot support for ladders
FR2082571A5 (de) * 1970-03-19 1971-12-10 Frassetto Emile
FR2152278A5 (de) * 1972-09-12 1973-04-20 Sacome
FR2337802A1 (fr) * 1976-01-07 1977-08-05 Bryant & Son Ltd C Echafaudage a elements emboitables
FR2419374A1 (fr) * 1978-03-07 1979-10-05 Pons Punti Juan Plate-forme extensible pour echafaudages
DE2857148A1 (de) * 1978-03-18 1980-04-03 Peiner Masch Schrauben Stiel mit einstellspindel fuer ausgleichsrahmen
DE3014212A1 (de) * 1980-04-14 1981-10-15 Plettac Gmbh Stahlbau Und Gesenkschmiede, 5970 Plettenberg Baugeruest, insbesondere fahrgeruest
FR2547858A1 (fr) * 1983-06-22 1984-12-28 Souchko Alexandre Echelle en elements demontables et emboitables, autorisant une reduction volumetrique, lors du transport ou de l'inutilisation

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US349049A (en) * 1886-09-14 Telegraph-pole
US724953A (en) * 1902-08-07 1903-04-07 John C Schaller Fire-ladder.
US2201608A (en) * 1938-02-09 1940-05-21 George W Causey Scaffolding
US3476211A (en) * 1967-12-04 1969-11-04 Louis A Cormier Kit for constructing ladders and the like
CH485108A (de) * 1969-09-01 1970-01-31 Doerig Carl Leiterntritt
US3747689A (en) * 1971-05-11 1973-07-24 L Frederick Modular leads
US4086980A (en) * 1977-02-11 1978-05-02 Shortes Lois E Dismantling ladder

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1890763A (en) * 1932-02-19 1932-12-13 Russell C Wilson Portable step for a ladder
US2528317A (en) * 1948-04-07 1950-10-31 Allen F Newman Footrest for stepladders
US2755981A (en) * 1952-10-01 1956-07-24 Omer H Edwards Roof ladder
FR1170345A (fr) * 1957-03-28 1959-01-13 Perfectionnements apportés aux échafaudages métalliques
FR1181679A (fr) * 1957-08-27 1959-06-17 Système d'échafaudage tubulaire télescopique
FR1293968A (fr) * 1961-07-03 1962-05-18 Rohren Und Roheisengrosshandel échafaudage démontable
US3276543A (en) * 1964-10-15 1966-10-04 Kanoza Bernard Detachable foot support for ladders
FR2082571A5 (de) * 1970-03-19 1971-12-10 Frassetto Emile
FR2152278A5 (de) * 1972-09-12 1973-04-20 Sacome
FR2337802A1 (fr) * 1976-01-07 1977-08-05 Bryant & Son Ltd C Echafaudage a elements emboitables
FR2419374A1 (fr) * 1978-03-07 1979-10-05 Pons Punti Juan Plate-forme extensible pour echafaudages
DE2857148A1 (de) * 1978-03-18 1980-04-03 Peiner Masch Schrauben Stiel mit einstellspindel fuer ausgleichsrahmen
DE3014212A1 (de) * 1980-04-14 1981-10-15 Plettac Gmbh Stahlbau Und Gesenkschmiede, 5970 Plettenberg Baugeruest, insbesondere fahrgeruest
FR2547858A1 (fr) * 1983-06-22 1984-12-28 Souchko Alexandre Echelle en elements demontables et emboitables, autorisant une reduction volumetrique, lors du transport ou de l'inutilisation

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0360049A1 (de) * 1988-09-01 1990-03-28 KRAUSE-WERK GMBH & CO. KG Leiterpodest
FR2666620A1 (fr) * 1990-09-12 1992-03-13 Santos Pierre Echelle pliante.
WO1993020306A1 (en) * 1992-03-27 1993-10-14 Gunnar Strand Tension - and pressure - absorbing construction components
FR2908143A1 (fr) * 2006-11-06 2008-05-09 Layher Sas Soc Par Actions Sim Systeme d'echafaudage metallique
WO2011003403A2 (de) 2009-07-10 2011-01-13 Poly-Tools Bennewart Gmbh Baukastenstecksystem
WO2011003403A3 (de) * 2009-07-10 2011-03-10 Poly-Tools Bennewart Gmbh Baukastenstecksystem

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