EP0352598A1 - Echelle double - Google Patents
Echelle double Download PDFInfo
- Publication number
- EP0352598A1 EP0352598A1 EP89113121A EP89113121A EP0352598A1 EP 0352598 A1 EP0352598 A1 EP 0352598A1 EP 89113121 A EP89113121 A EP 89113121A EP 89113121 A EP89113121 A EP 89113121A EP 0352598 A1 EP0352598 A1 EP 0352598A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- end wall
- ladder
- feet
- support section
- section
- 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
Links
- 239000000463 material Substances 0.000 claims description 14
- 239000004020 conductor Substances 0.000 claims description 5
- 239000011343 solid material Substances 0.000 claims description 3
- 239000004033 plastic Substances 0.000 description 2
- 229920001875 Ebonite Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C7/00—Component parts, supporting parts, or accessories
- E06C7/42—Ladder feet; Supports therefor
- E06C7/46—Non-skid equipment
Definitions
- the invention relates to a stepladder with pairs of spars having ladder parts, in which the non-slip feet with spars having support surfaces in the folded state of the stepladder used as a single ladder are supported on the floor and the standing surfaces are in a common plane.
- step ladders of the type mentioned at the outset such as are described in DE 36 31 673 A1
- the feet lie in the folded state of the ladder on the floor and a common straight line running in the floor plane, which runs parallel to the pivot axis of the pairs of bars.
- the step ladder can also be used as a single ladder without putting additional strain on the joint.
- the use of the double rung ladder as a single ladder regularly presupposes that each foot has at least two different bases.
- the invention has for its object to develop the generic stepladder without undue constructive effort so that the feet rest on the floor with the same support or standing surfaces, regardless of the working position of the ladder.
- the object is achieved in that the lying on the floor, extending in the direction of the pivot axis of the pairs of spars and with respect to the pivot axis opposite end portions of the facing end faces of the feet are spaced from each other that the feet have the facing end faces Have end walls of the same height, and that each end wall is articulated to a support section having the support surface, which includes an angle with the end wall in the unloaded state of the ladder that is greater than the maximum angle of inclination of the conductor parts, and that the end wall and the support section by means of a spring body are connected, which strives to keep the angle between the end wall and the support portion large.
- the invention is achieved in any case if the feet are designed such that the lower end sections of the mutually facing end faces define a straight line in the folded state of the double rung ladder, which runs parallel to the pivot axis of the pairs of bars and which (ideally) is identical with the joint axes of the individual feet.
- the articulation axis of each foot lies in the line of intersection of the support surface and the surface of the face of the respective foot.
- an expedient embodiment of the invention provides that the foot consists of a holding section which can be connected to the spar, the end wall and the support section which is articulated on the end wall. It is advantageous if the foot is formed in one piece and consists of a solid material, the holding section and the end wall being rigidly connected to one another. In order to ensure that the support section follows the pivoting movements of the pairs of bars, it is expedient if the space defined by the holding section, the end wall and the support section is provided with an elastically deformable material, e.g. Rubber that is filled. This material guarantees that the support section is in pressure connection with the floor, the pressure being evenly distributed.
- an elastically deformable material e.g. Rubber that is filled. This material guarantees that the support section is in pressure connection with the floor, the pressure being evenly distributed.
- the spring body is filled with an elastically deformable material.
- the object on which the invention is based can also be achieved in such a way that the end walls are formed from an elastically deformable material, so that the height of the end walls can be changed.
- the end walls 60, 61, 62, 63, 64 and 65 can be connected in an articulated manner to a support section 70 to 75 each having the support surfaces, which in the unloaded state of the conductor encloses an angle with the associated end wall 60 to 65 which is usually greater than 115 ° is.
- the feet shown in FIGS. 1 and 2 and made of hard rubber or plastic consist of holding sections 90 and 91, the end walls 60 and 61 and the support sections 70 and 71.
- the support sections 70 and 71 are articulated with the associated end walls 60 and 61 connected.
- the interior of the feet is partially covered with an elastically deformable material 98, e.g. Rubber, filled. This material presses the support section 70 or 71 away from the holding section 90 or 91.
- the support sections 70 and 71 lie snugly on the floor, regardless of whether the ladder is used as a contact or double rung ladder.
- the support sections 70 and 71 are provided with knobs, so that a non-slip connection to the floor is guaranteed.
- the end walls 60 and 61 consist of a rigid and unbreakable material.
- end walls 62 and 63 are concave and consist of a material which is partially elastically deformable (Fig. 4), so that the differences in length resulting from the inclination between the support bars can be compensated.
- 5 and 6 feet are shown, which are integrally formed and made of a solid material, wherein the holding portions 92 and 93 and the end walls 64 and 65 are rigidly connected to each other.
- the spaces defined by the holding sections 92 and 93, the end walls 64 and 65 and the support sections 74 and 75 are filled with an elastically deformable material 98.
- the peculiarity of this embodiment of the invention is that the end walls 64 and 65 are connected to the associated support sections 74 and 75 by means of a spring body 80 and 81 which is circular in cross-section.
- the spring bodies 80 and 81 extend in the direction of the pivot axis of the pairs of spars, are arranged in the interior of the feet 22 and 24 and each have a longitudinal slot 99 and 100, which determines the distance between the support sections 74 and 75 from the end walls 64 and 65.
- spring bodies 80 and 81 Another property of the spring bodies 80 and 81 is that the support sections 74 and 75 are not only pivotable, but also (slightly) adjustable in the direction of the bars. This takes into account the fact that the lower end portions of the end walls 64 and 65 do not end in ideal lines.
- the spring bodies 80 and 81 are filled with an elastically deformable material.
- spring bodies 80 and 81 Another property of the spring bodies 80 and 81 is that they not only ensure that the support sections 74 and 75 can be pivotably connected to the end walls 64 and 65, but also ensure that the support sections 74 and 75 are always in pressure connection with the floor 9 stand. This is also supported by the material 98, which strives to keep the angle between the support sections 74 and 75 and the end walls 64 and 65 to a maximum. This ensures that the double rung ladder can be supported on all support sections at the same time, regardless of whether it is used in the expanded or collapsed state.
- the feet shown in FIGS. 5 and 6 can be made of extruded and steel sections and filled with elastic material. The same properties can also be obtained if an impact-resistant and hard plastic is used.
- each foot has only a single footprint, which rests fully on the floor, so that the pressure of the spars is relatively small.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ladders (AREA)
- Stringed Musical Instruments (AREA)
- Electrophonic Musical Instruments (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT89113121T ATE69859T1 (de) | 1988-07-26 | 1989-07-18 | Stehleiter. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3825299 | 1988-07-26 | ||
DE3825299A DE3825299A1 (de) | 1988-07-26 | 1988-07-26 | Doppelsprossenleiter |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0352598A1 true EP0352598A1 (fr) | 1990-01-31 |
EP0352598B1 EP0352598B1 (fr) | 1991-11-27 |
Family
ID=6359539
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP89113121A Expired - Lifetime EP0352598B1 (fr) | 1988-07-26 | 1989-07-18 | Echelle double |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0352598B1 (fr) |
AT (1) | ATE69859T1 (fr) |
DE (2) | DE3825299A1 (fr) |
ES (1) | ES2027435T3 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1367213A1 (fr) * | 2002-05-30 | 2003-12-03 | Etablissements Sklop | Pied d'échelle articulé |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2297961B1 (es) * | 2004-11-12 | 2009-07-20 | Escaleras Escalibur,S.L. | Accesorios estabilizadores de escaleras portatiles. |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2230406A (en) * | 1938-10-10 | 1941-02-04 | Conrad B Johnson | Antislip device |
GB876471A (en) * | 1959-04-28 | 1961-09-06 | United Carr Fastener Corp | Improvements in and relating to supports for furniture and the like |
US3127953A (en) * | 1960-02-17 | 1964-04-07 | Shore Charles | Safety ladder |
EP0005690A2 (fr) * | 1978-05-23 | 1979-11-28 | Gilbert Loix | Echelle double extensible ou à appui |
DE3631673A1 (de) * | 1986-09-18 | 1988-04-07 | Loh Kg Hailo Werk | Doppelsprossenleiter |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1679122A1 (de) * | 1967-02-08 | 1971-05-06 | Werner Co Inc R D | Ausziehbare Leiter |
-
1988
- 1988-07-26 DE DE3825299A patent/DE3825299A1/de active Granted
-
1989
- 1989-07-18 EP EP89113121A patent/EP0352598B1/fr not_active Expired - Lifetime
- 1989-07-18 DE DE8989113121T patent/DE58900495D1/de not_active Expired - Lifetime
- 1989-07-18 AT AT89113121T patent/ATE69859T1/de not_active IP Right Cessation
- 1989-07-18 ES ES198989113121T patent/ES2027435T3/es not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2230406A (en) * | 1938-10-10 | 1941-02-04 | Conrad B Johnson | Antislip device |
GB876471A (en) * | 1959-04-28 | 1961-09-06 | United Carr Fastener Corp | Improvements in and relating to supports for furniture and the like |
US3127953A (en) * | 1960-02-17 | 1964-04-07 | Shore Charles | Safety ladder |
EP0005690A2 (fr) * | 1978-05-23 | 1979-11-28 | Gilbert Loix | Echelle double extensible ou à appui |
DE3631673A1 (de) * | 1986-09-18 | 1988-04-07 | Loh Kg Hailo Werk | Doppelsprossenleiter |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1367213A1 (fr) * | 2002-05-30 | 2003-12-03 | Etablissements Sklop | Pied d'échelle articulé |
FR2840349A1 (fr) * | 2002-05-30 | 2003-12-05 | Sklop Ets | Pied d'echelle articule |
Also Published As
Publication number | Publication date |
---|---|
ES2027435T3 (es) | 1992-06-01 |
DE3825299A1 (de) | 1990-02-01 |
DE3825299C2 (fr) | 1992-04-23 |
ATE69859T1 (de) | 1991-12-15 |
EP0352598B1 (fr) | 1991-11-27 |
DE58900495D1 (de) | 1992-01-09 |
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