EP1109987B1 - Tragbares, faltbares, als leiter sowie als tritthocker verwendbares gestell - Google Patents

Tragbares, faltbares, als leiter sowie als tritthocker verwendbares gestell Download PDF

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Publication number
EP1109987B1
EP1109987B1 EP99936691A EP99936691A EP1109987B1 EP 1109987 B1 EP1109987 B1 EP 1109987B1 EP 99936691 A EP99936691 A EP 99936691A EP 99936691 A EP99936691 A EP 99936691A EP 1109987 B1 EP1109987 B1 EP 1109987B1
Authority
EP
European Patent Office
Prior art keywords
ramp
structure according
shaft
feet
steps
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP99936691A
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English (en)
French (fr)
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EP1109987A1 (de
Inventor
Bernard Clavel
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Individual
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Individual
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Publication of EP1109987A1 publication Critical patent/EP1109987A1/de
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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
    • E06C1/38—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
    • E06C1/382—Tripod ladders
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C7/00—Component parts, supporting parts, or accessories
    • E06C7/08—Special construction of longitudinal members, or rungs or other treads
    • E06C7/081—Rungs or other treads comprising anti-slip features

Definitions

  • the present invention relates to a portable support structure and foldable, usable as a ladder or stepladder to allow a person to move around, including getting on or off, for example to reach otherwise inaccessible objects or to cross obstacles.
  • These uprights have, at one of their ends, bearing surfaces at the ground possibly equipped with skates.
  • the other two ends of the uprights are, for their part, intended to come to bear on a bearing surface, for example on a vertical wall (case of a simple ladder) or are articulated to a support structure which may consist of a second ladder (case of the double scale).
  • gangway scales such as the one found described in patent DE C 713545 which includes two parallel uprights connected by steps. The upper end of the uprights is fixed to the upper floor while the lower end rests on the floor inferior. A ramp that the user can step over is fixed on the steps in the median plane of symmetry of the scale.
  • the uprights constitute stringers bearing steps instead of steps.
  • the support structure includes two parallel uprights interconnected by crosspieces as well to the stringers by disconnectable bracing means.
  • this support polygon is variable according to the location of the support points of the ladder, while nothing allows the user to indicate the position of his center of gravity vis-à-vis this polygon.
  • the user can therefore be in imbalance and fall without a sign precursor did not warn him of the danger.
  • the invention therefore particularly aims to remove these disadvantages and solve these problems. It intends to achieve these results using a support structure having a relatively simple structure easily foldable and nevertheless inexpensive.
  • the steps may include blocking means lateral of the feet so as to ensure better joining structure / user, when the latter squeezes the ramp between his legs.
  • the stringer 1 of the ladder / stepladder consists of two side rails 2, 3 each consisting of an aluminum section profile rectangular. These two beams 2, 3 extend parallel to one another to each other and are joined to each other thanks to two sets of rods oblique bracing 4, 5 - 4 ', 5', fixed on the side members 2, 3 by their ends.
  • This spar 3 carries a ramp 7 of circular section which extends above the stringer 1 in the same vertical plane.
  • the ramp 7 is fixed to the stringer 1 by a series of collars fixed to the spar 3. In its upper part, the ramp 7 forms an elbow 9 partially surrounding the end of the beam 3.
  • the spar 2 supports, meanwhile, a succession of double steps M 1 , M ' 1 - M 2 , M' 2 - M 3 , M ' 3 which each extend transversely on either side of the vertical plane of the silt 1.
  • these double steps M 1 , M ' 1 - M 2 , M' 2 - M 3 , M ' 3 each comprise two plates P which extend horizontally on either side of the plane of the stringer 1 and which are carried by tubular cross members T which are fixed by bolting to a pair of horizontal rods 4, 5.
  • This pair of horizontal rods 4, 5 is here braced by a pair of oblique rods 4 ', 5' which extends in the gap formed between said links 4, 5 and the step which is just below.
  • the plates P are provided with non-slip raised elements and each have, at their lateral edges, a fold R towards the high to prevent the user's feet from slipping laterally.
  • the pair of horizontal rods 4, 5 located at the upper end of the stringer 1 supports a shelf TB also non-slip on which an object, for example a paint can, can be placed.
  • This pair of rods 4 ", 5", of larger section than those of the rods 4, 5, carries below the shelf a cross-member TR on the ends of which come to articulate two feet P 1 , P 2 terminated at their lower ends by support pads on the ground 11, 12.
  • these feet P 1 , P 2 form with the spar 3 a tripod which delimits a prismatic volume inside which the steps M 1 , M ' 1 - M 2 , M' 2 - M 3 , M ' 3 are arranged below the spar 3.
  • the two feet P 1 , P 2 are secured to each other by a disconnectable cross TD.
  • the ladder / stepladder offers the user stability and unmatched security.
  • the ladder / stepladder can be placed on floors possibly accidented, it being understood that the user will endeavor to arrange so that its plane of symmetry is vertical.
  • the user mounted on the ladder / stepladder can "become one" with the latter by squeezing the ramp between his legs.
  • the vertical plane of symmetry of the user in which his center of gravity is located is reduced to the vertical plane of symmetry of the ladder / stepladder (bisector plane of the dihedral formed by the stringer 1 and the two feet P 1 , P 2 ).
  • the vertical of the center of gravity of the user assembly ladder / stepladder therefore necessarily passes inside the polygon of lift of the ladder / stepladder.
  • the stability of the whole is therefore guarantee.
  • ladder / stepladder Another important advantage of the ladder / stepladder previously described consists in that it can fold back to occupy, in the folded state, only one very small volume. In this position, the user can use the ramp 7 to carry the ladder / stepladder.
  • the two feet can come to fold against the stringer 1, so that the volume of the assembly, in the folded state, is reduced substantially to the dimensions of the stringer 1 and the steps M 1 , M ′ 1 - M 2 , M ' 2 - M 3 , M' 3 ( Figure 4).
  • the steps M 1 , M ' 1 - M 2 , M' 2 - M 3 , M ' 3 may occupy positions offset in height by approximately 21 cm, the stringer being inclined by approximately 30 °.
  • the width of stringer 1 (distance between its upper and lower edges) is such that the vertical above the first third of a step intersects the edge upper of the "stringer” at a height of about 40 cm.
  • Ramp 7 is located approximately 40 cm above the steps so that be able to come into contact between the user's calves and knees.
  • each foot P 1 , P 2 of the ladder / stepladder may be adjustable in length so as to allow adjustment of verticality, in particular in the case of uneven ground.
  • each foot P 1 , P 2 may comprise two elements which telescopically fit into one another and fixing means making it possible to secure the two elements in the axial position corresponding to the length of the foot that the we want to get.
  • the above ramp may consist of the upper beam 3 of the stringer 1. This can be extended beyond its upper end by a section of ramp which engages telescopically in the beam 3. A multiposition axial locking of this section in the beam can then be provided by all known fixing means.
  • the upper end of this section may be fitted with a hook or similar, which can be used to hang an object, for example a pot or a basket.
  • the feet will be oriented so that the end upper stringer 1 is located substantially vertical to the barycenter of the triangle formed by the pads 6, 11, 12.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ladders (AREA)

Claims (11)

  1. Tragbare und zusammenklappbare Stützkonstruktion zur Verwendung als Leiter oder Tritthocker, mit einer Wange (1), auf deren beiden Seiten zwei Reihen von Stufen (M1, M'1-M2, M'2-M3, M'3) befestigt sind, wobei diese Wange (1), ein unteres Ende, das auf dem Boden zur Anlage kommen soll, und ein zweites Ende, an dem zwei Füße (P1, P2) angelenkt sind, aufweist, wobei die unteren Enden auf dem Boden zur Anlage kommen sollen, dadurch gekennzeichnet, dass das untere Ende der Wange (1) einen Schuh zur Abstützung auf dem Boden aufweist, so dass die Konstruktion in auseinander gefaltetem Zustand eine Dreibeinkonstruktion umfasst, und dass sie eine fest mit der Wange (1) verbundene Rampe (7) aufweist, die sich in einem Abstand von den Stufen (M1, M'1-M2, M'2-M3, M'3), der kleiner ist als die mittlere Länge eines Beins, in der Vertikalen der Wange (1) erstreckt, so dass sich ein Benutzer auf den Stufen (M1, M'1-M2, M'2-M3, M'3) bewegen kann, indem er die Rampe (7) übersteigt, und die Rampe zwischen seinen Beinen einklemmen kann, um sich ohne Benutzung seiner Hände an der Konstruktion festzuhalten.
  2. Konstruktion nach Anspruch 1,
    dadurch gekennzeichnet, dass die Stufen (M1, M'1-M2, M'2-M3, M'3) Mittel (R) zur seitlichen Sperrung der Füße umfassen, um eine bessere feste Verbindung zwischen der Konstruktion und dem Benutzer zu gewährleisten, wenn dieser die Rampe zwischen seinen Beinen einklemmt.
  3. Konstruktion nach einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet, dass die Wange (1) zwei parallele Längsträger (2, 3) aufweist, die durch Stegschwingenpaare (4,5 - 4', 5') fest miteinander verbunden sind, wobei einer der Längsträger (3), der etwas länger ist als der andere, unten durch einen Stützschuh auf dem Boden (6) abschließt.
  4. Konstruktion nach Anspruch 3,
    dadurch gekennzeichnet, dass die Rampe am längeren Längsträger (3) befestigt ist, während die Stufen durch den kürzeren Längsträger (2) gestützt werden.
  5. Konstruktion nach Anspruch 3,
    dadurch gekennzeichnet, dass die Rampe aus dem längeren Längsträger (3) besteht. ,
  6. Konstruktion nach Anspruch 5,
    dadurch gekennzeichnet, dass die Rampe durch einen Rampenabschnitt verlängert ist, der teleskopisch in den längeren Längsträger (3) eingreift, wobei das obere Ende des Abschnitts mit einem Haken versehen sein kann.
  7. Konstruktion nach einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet, dass sie zwei Reihen von Stegschwingenpaaren aufweist, wobei die Paare (4, 5) einer Reihe horizontal sind, während die Paare (4', 5') der anderen Reihe schräg sind und eine Verstrebung der horizontalen Schwingen (4, 5) gewährleisten, und dass die Paare horizontaler Schwingen (4, 5) jeweils ein Paar Stufen (M1, M'1-M2, M'2-M3, M'3) stützen, die sich quer auf beiden Seiten der Wange (1) erstrecken.
  8. Konstruktion nach einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet, dass die Stufen (M1, M'1-M2, M'2-M3, M'3) aus Platten (P) bestehen, die mit Antirutschelementen versehen sind und nach oben geklappte Seitenränder (R) aufweisen.
  9. Konstruktion nach einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet, dass sie ein Paar horizontaler Schwingen (4", 5") aufweist, die sich am oberen Ende der Wange (1) befinden und einen Tisch tragen, auf dem ein Objekt abgelegt werden kann, und dass die Schwingen (4", 4") einen Querträger (TR) tragen, an dessen Enden die beiden Füße (P1, P2) angelenkt werden.
  10. Konstruktion nach einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet, dass die Füße (P1, P2) so ausgerichtet sind, dass sich das obere Ende der Wange (1) im Wesentlichen in der Vertikalen über der Mitte des durch die an den Enden der Wange (1) bzw. der Füße (P1, P2) angebrachten Schuhe (6, 11, 12) gebildeten Dreiecks befindet.
  11. Konstruktion nach Anspruch 1,
    dadurch gekennzeichnet, dass die beiden Füße (P1, P2) durch einen trennbaren Querträger (TD) fest miteinander verbunden sind.
EP99936691A 1998-09-04 1999-07-30 Tragbares, faltbares, als leiter sowie als tritthocker verwendbares gestell Expired - Lifetime EP1109987B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9811176 1998-09-04
FR9811176A FR2783012B1 (fr) 1998-09-04 1998-09-04 Structure support portative utilisable en tant qu'echelle ou escabeau
PCT/FR1999/001935 WO2000014373A1 (fr) 1998-09-04 1999-07-30 Structure support portative utilisable en tant qu'echelle ou escabeau

Publications (2)

Publication Number Publication Date
EP1109987A1 EP1109987A1 (de) 2001-06-27
EP1109987B1 true EP1109987B1 (de) 2004-08-18

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP99936691A Expired - Lifetime EP1109987B1 (de) 1998-09-04 1999-07-30 Tragbares, faltbares, als leiter sowie als tritthocker verwendbares gestell

Country Status (6)

Country Link
US (1) US6386320B1 (de)
EP (1) EP1109987B1 (de)
AU (1) AU5169899A (de)
DE (1) DE69919551D1 (de)
FR (1) FR2783012B1 (de)
WO (1) WO2000014373A1 (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2784115B1 (fr) 1998-10-05 2000-12-15 Rhodia Chimie Sa Composition de revetements contenant des silicones fonctionnalisees
US6874598B1 (en) 2002-10-15 2005-04-05 William H. Baker Ergonomically improved tripod stepladder
US6951265B2 (en) * 2003-08-04 2005-10-04 Ballymore Company, Inc. Foldable stairway ladder
CN104885514B (zh) 2012-11-01 2019-05-21 英特尔公司 在LTE-A网络中发送QoS要求以及UE功率偏好的信号
JP5956056B2 (ja) * 2013-02-26 2016-07-20 ▲徳▼夫 青井 脚立
JP1519488S (de) 2014-07-10 2015-03-16
MX2017007657A (es) * 2014-12-15 2018-01-23 Roddenby Glenn Aparato de escalera orientada verticalmente para permitir una postura de ascenso mejorada con su uso por un escalador.
USD758615S1 (en) 2015-04-28 2016-06-07 Tokuo AOI Stepladder
USD757959S1 (en) 2015-04-28 2016-05-31 Tokuo AOI Stepladder
USD765269S1 (en) 2015-04-28 2016-08-30 Tokuo AOI Stepladder

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US322414A (en) * 1885-07-21 Step-ladder
US68193A (en) * 1867-08-27 Improvement in elevating-block
US791509A (en) * 1903-12-12 1905-06-06 John G Soergel Step-ladder.
US1511580A (en) * 1924-02-18 1924-10-14 Prince Willis Self-supporting ladder
US1976345A (en) * 1932-10-03 1934-10-09 Hruby Frank Ladder
DE713545C (de) * 1938-07-01 1941-11-10 Arno Fischer Leitertreppe
FR1184292A (fr) * 1957-10-14 1959-07-20 échelle avec pied orientable pour arbres fruitiers ou pour tout autre application
US4199040A (en) * 1979-01-22 1980-04-22 The Laitram Corporation Ship ladder
US4316524A (en) * 1980-06-12 1982-02-23 The Laitram Corporation Two-speed ladder
US4509617A (en) * 1981-04-27 1985-04-09 The Laitram Corporation Stair having alternate half treads
US4535871A (en) * 1981-09-28 1985-08-20 The Laitram Corporation Unitary stairway
US4798262A (en) * 1986-09-12 1989-01-17 Paul Margolies Tripodal support
US5085291A (en) * 1991-01-22 1992-02-04 Narramore Daniel O Safety ladder
US5125476A (en) * 1991-09-16 1992-06-30 Merrick Harry G Ladder apparatus and hinge system therefor
US6206139B1 (en) * 1996-10-17 2001-03-27 Robert C. Bogart, Jr. Folding tripod ladder having extendable legs
DE29712753U1 (de) * 1997-07-18 1997-09-11 Soell Gmbh Versenkbare Verlängerung der Führungsschiene einer Steigschutzvorrichtung
US6076634A (en) * 1999-01-14 2000-06-20 Simon; Steve J. Mast ladder assembly

Also Published As

Publication number Publication date
US6386320B1 (en) 2002-05-14
AU5169899A (en) 2000-03-27
DE69919551D1 (de) 2004-09-23
FR2783012B1 (fr) 2000-10-27
FR2783012A1 (fr) 2000-03-10
WO2000014373A1 (fr) 2000-03-16
EP1109987A1 (de) 2001-06-27

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