EP1109987B1 - Structure support portable et repliable utilisable en tant qu'echelle ou escabeau - Google Patents
Structure support portable et repliable utilisable en tant qu'echelle ou escabeau Download PDFInfo
- 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
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Images
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.
Description
- un limon de part et d'autre duquel sont fixées deux séries de marches respectives, ce limon comprenant une extrémité inférieure destinée à venir en appui sur le sol et une seconde extrémité sur laquelle sont articulés deux pieds dont les extrémités inférieures sont destinées à venir en appui sur le sol,
- l'extrémité inférieure du limon comprenant un patin d'appui au sol de sorte qu'à l'état déployé la structure présente une structure tripode , une rampe, solidaire du limon, qui s'étend à la verticale de ce dernier, à une distance des marches inférieure à la longueur moyenne d'une jambe, de manière à ce qu'un utilisateur puisse se déplacer sur les marches en enjambant la rampe et puisse serrer ladite rampe entre ses jambes pour se tenir à la structure sans avoir à utiliser ses mains.
Claims (11)
- Structure support repliable et portable, utilisable en tant qu'échelle ou escabeau, comprenant un limon (1) de part et d'autre duquel sont fixées deux séries de marches (M1, M'1 - M2, M'2 - M3, M'3), ce limon (1) comprenant une extrémité inférieure destinée à venir en appui sur le sol et une seconde extrémité sur laquelle sont articulés deux pieds (P1,P2) dont les extrémités inférieures sont destinées à venir en appui sur le sol,
caractérisé en ce que l'extrémité inférieure du limon (1) comprend un patin d'appui au sol de sorte qu'à l'état déployé la structure présente une structure tripode, et en ce qu'elle comprend une rampe (7), solidaire du limon (1), qui s'étend à la verticale de ce dernier, à une distance des marches (M1, M'1 - M2, M'2 - M3, M'3) inférieure à la longueur moyenne d'une jambe, de manière à ce qu'un utilisateur puisse se déplacer sur les marches (M1, M'1 - M2, M'2 - M3, M'3) en enjambant la rampe (7) et puisse serrer ladite rampe entre ses jambes pour se tenir à la structure sans avoir à utiliser ses mains. - Structure selon la revendication 1,
caractérisé en ce que les marches (M1, M'1 - M2, M'2 - M3, M'3) comprennent des moyens de blocage latéral (R) des pieds de manière à assurer une meilleure solidarisation structure/utilisateur, lorsque celui-ci serre la rampe entre ses jambes. - Structure selon l'une des revendications précédentes,
caractérisé en ce que le limon (1) comprend deux longerons (2, 3) parallèles, solidarisés l'un à l'autre par des paires de biellettes d'entretoisement (4, 5 - 4', 5'), l'un des longerons (3), légèrement plus long que l'autre, se terminant dans le bas par un patin d'appui au sol (6). - Structure selon la revendication 3,
caractérisé en ce que la susdite rampe est fixée sur le longeron (3) de plus grande longueur tandis que les susdites marches sont supportées par le longeron (2) de plus petite longueur. - Structure selon la revendication 3,
caractérisé en ce que la susdite rampe consiste en le longeron (3) de plus grande longueur. - Structure selon la revendication 5,
caractérisé en ce que la susdite rampe est prolongée par un tronçon de rampe qui s'engage télescopiquement dans le longeron (3) de plus grande longueur, l'extrémité supérieure dudit tronçon pouvant être équipée d'un crochet. - Structure selon l'une des revendications précédentes,
caractérisé en ce qu'elle comprend deux séries de paires de biellettes d'entretoisement, les paires (4, 5) de l'une des séries étant horizontales, tandis que les paires (4', 5') de l'autre série sont obliques et assurent un contreventement des biellettes horizontales (4, 5), et en ce que les paires de biellettes horizontales (4, 5) supportent chacune une paire de marches (M1, M'1 - M2, M'2 - M3, M'3) qui s'étendent transversalement de part et d'autre du limon (1). - Structure selon l'une des revendications précédentes,
caractérisé en ce que les susdites marches (M1, M'1 - M2, M'2 - M3, M'3) consistent en des plaques (P) munies d'éléments antidérapants et présentent des bordures latérales (R) repliées vers le haut. - Structure selon l'une des revendications précédentes,
caractérisé en ce qu'elle comprend un couple de biellettes horizontales (4", 5") situé à l'extrémité supérieure du limon (1) et supportant une tablette sur laquelle un objet peut être posé, et en ce que les susdites biellettes (4", 5") portent une traverse (TR) sur les extrémités de laquelle viennent s'articuler les deux pieds (P1, P2). - Structure selon l'une des revendications précédentes,
caractérisé en ce que les pieds (P1, P2) sont orientés de manière à ce que l'extrémité supérieure du limon (1) se trouve sensiblement à la verticale du centre du triangle formé par des patins (6, 11, 12) montés aux extrémités du limon (1) et des pieds (P1, P2) respectivement. - Structure selon la revendication 1,
caractérisé en ce que les deux pieds (P1, P2) sont solidarisés par une traverse déconnectable (TD).
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 (fr) | 2001-06-27 |
EP1109987B1 true EP1109987B1 (fr) | 2004-08-18 |
Family
ID=9530201
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99936691A Expired - Lifetime EP1109987B1 (fr) | 1998-09-04 | 1999-07-30 | Structure support portable et repliable utilisable en tant qu'echelle ou escabeau |
Country Status (6)
Country | Link |
---|---|
US (1) | US6386320B1 (fr) |
EP (1) | EP1109987B1 (fr) |
AU (1) | AU5169899A (fr) |
DE (1) | DE69919551D1 (fr) |
FR (1) | FR2783012B1 (fr) |
WO (1) | WO2000014373A1 (fr) |
Families Citing this family (10)
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 |
US9420511B2 (en) | 2012-11-01 | 2016-08-16 | Intel Corporation | Signaling QoS requirements and UE power preference in LTE-A networks |
US9689204B2 (en) | 2013-02-26 | 2017-06-27 | Tokuo AOI | Stepladder |
JP1519488S (fr) | 2014-07-10 | 2015-03-16 | ||
CN107109895B (zh) * | 2014-12-15 | 2020-04-14 | 格伦·罗登拜 | 一种可使攀登者在使用中采用更合适攀登姿态的垂直方向梯子装置 |
USD765269S1 (en) | 2015-04-28 | 2016-08-30 | Tokuo AOI | Stepladder |
USD758615S1 (en) | 2015-04-28 | 2016-06-07 | Tokuo AOI | Stepladder |
USD757959S1 (en) | 2015-04-28 | 2016-05-31 | Tokuo AOI | Stepladder |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US68193A (en) * | 1867-08-27 | Improvement in elevating-block | ||
US322414A (en) * | 1885-07-21 | Step-ladder | ||
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 |
-
1998
- 1998-09-04 FR FR9811176A patent/FR2783012B1/fr not_active Expired - Fee Related
-
1999
- 1999-07-30 EP EP99936691A patent/EP1109987B1/fr not_active Expired - Lifetime
- 1999-07-30 WO PCT/FR1999/001935 patent/WO2000014373A1/fr active IP Right Grant
- 1999-07-30 US US09/786,295 patent/US6386320B1/en not_active Expired - Fee Related
- 1999-07-30 DE DE69919551T patent/DE69919551D1/de not_active Expired - Lifetime
- 1999-07-30 AU AU51698/99A patent/AU5169899A/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
US6386320B1 (en) | 2002-05-14 |
FR2783012B1 (fr) | 2000-10-27 |
FR2783012A1 (fr) | 2000-03-10 |
EP1109987A1 (fr) | 2001-06-27 |
DE69919551D1 (de) | 2004-09-23 |
AU5169899A (en) | 2000-03-27 |
WO2000014373A1 (fr) | 2000-03-16 |
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