EP2995766A1 - Griffleiter - Google Patents
Griffleiter Download PDFInfo
- Publication number
- EP2995766A1 EP2995766A1 EP15020156.4A EP15020156A EP2995766A1 EP 2995766 A1 EP2995766 A1 EP 2995766A1 EP 15020156 A EP15020156 A EP 15020156A EP 2995766 A1 EP2995766 A1 EP 2995766A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ladder
- feet
- main plane
- support surface
- foregoing
- 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- Withdrawn
Links
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
-
- 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 ladder which is set obliquely against a wall or other object.
- the invention also relates to the use of a ladder on a sloping roof or other object.
- hooks which engage the ground only when the ladder is already slipping (see BE1018435 and GB632311 ).
- the invention often also still has to be adjusted or mounted on site when the ladder is used.
- the ladder also has to be placed exactly at the correct angle, which can be difficult in practice.
- Solutions which function only when the ladder is already slipping away offer less security and safety and do not work properly, for instance when the ground surface is very slippery.
- the rubber mat is effective, but is also rather inconvenient to use.
- the invention described hereinbelow consists of a ladder (1) with two extra-long elements (referred to below as ladder feet) with which the ladder rests on the ground and which, instead of being located directly under the ladder, are attached asymmetrically at the bottom of the ladder, wherein these ladder feet (3) are located with the support surface substantially transversely of the main plane of the ladder on the side of the ladder with which the ladder is placed against an object, i.e. they protrude on the side where the ladder normally speaking makes the smallest angle with the ground surface (see fig. 1 a) .
- Support surface (2) is thus situated here at a distance (x) from the main plane (1) of the ladder (see fig. 1 b) .
- the ladder Even if it has a tendency to slip somewhat, for instance on smooth surfaces, the ladder will not easily slide any further; it will then in fact have to be elevated slightly counter to its own weight because of the position of the feet.
- the feet may be secured to the lower horizontal element of the ladder which runs parallel to the rungs ( fig. 1,2 and 4 ) or, in the case of other ladders, secured to the two stiles. ( fig. 3 ).
- the advantage is a simple and reliable construction integrated into the ladder, wherein the ladder can be placed immediately with no additional supplementary support surfaces as is the case in known ladders, and wherein the ladder is immediately safeguarded in any position of the ladder because, in contrast to known ladders with supplementary support surfaces, the whole weight of the ladder and a possible load, say at least 80% of the weight, is wholly supported from the start by the support surfaces of said ladder feet which form part of the ladder itself.
- the invention can also be embodied by applying for instance a U-shaped lower horizontal element of the ladder, wherein the outer ends protrude further to the rear (object side) and to which outer ends ladder feet are attached, wherein the ladder feet are thus disposed at said distance from the main plane of the ladder so that the same effect is also obtained (see fig. 4 ).
- the ladder base can also be widened by partially sliding two additional parts (1 and 2) out of the lower horizontal element, which parts are also provided with said ladder feet and can be secured by locks (3) (see fig. 5 ).
- said ladder feet can also serve as a safeguard by having them rest on a horizontal element of the roof, for instance on a tile lath, after the tiles have been pushed slightly upward, or in a gutter (see fig. 6 ).
- the part resting on the horizontal part of the roof must here lie substantially transversely of the main plane of the ladder and be of sufficient length; in the prototype the outer ends of the ladder feet were located 15 cm from the centre of the ladder, although another dimension is also possible.
- the ladder feet themselves can also be made pivotable, whereby they protrude less during transport and storage.
- fig. 7 Also possible is an embodiment of the ladder according to the invention according to fig. 7 wherein the lower horizontal element of the ladder, optionally provided with ladder feet, is connected pivotally to the ladder (1) so that it can be located at a distance from the main plane of the ladder ( fig. 7a ), but can also pivot back into the main plane of the ladder ( fig. 7b ).
- the advantage hereof is that when it is folded in line with the ladder, there are no protruding parts at all on the ladder.
- the effect here is basically that the lower part of the ladder folds backwards.
- the angle (y) through which the lower horizontal element can pivot may vary, wherein the most ideal angle seems to be about 20 or 25 degrees so that the ladder does not tend to tilt toward the user when he/she sets foot on the lowest rung.
- the hinge piece (3) of the invention can for instance be embodied as a bent piece of sheet with a thickness of 2 to 3 mm.
- This hinge piece is attached to the lower rung for instance by means of a long bolt M12 (5) therethrough.
- the lower, already existing or new horizontal element (2) can be mounted on hinge piece (3) by means of two bolts, for instance M6 (6).
- strips (4) can for instance be used of 1.5 or 2 mm thickness, which can slide on the outer side through the stiles (in the case of I-profile stiles) or along the stiles of the ladder.
- Both strips are pulled downward by a spring and bounded by a slotted hole through which the long bolt M12 passes.
- pivoting part (3) By pulling the strips slightly upward the pivoting part (3) is unlocked and can be moved into a different position.
- the two parts 3 and 4 can be made of steel or aluminum sheet which only needs bending and no further welding work, which can be a great advantage in respect of production costs.
- Part 3 is bounded when pivoting to the rear in that it comes up against the stiles of the ladder.
- the ladder does in fact come a little off the ground here, so that the weight rests only on the horizontal element and so the ladder is immediately secured against slipping.
- the support surface can be pivoted toward the main plane of the ladder so that the ladder can be used in normal position, wherein horizontal element 2 is pivoted to a position just below the ladder stiles and the invention is locked.
- the invention does not in fact take up any extra space because the other parts of the (extendable) ladder can slide in between both sides of the hinge part.
- the invention can be made from steel, aluminum, plastic or other material. Owing to its simplicity the invention will not break easily and thus provides optimal safety.
- the invention can be applied in all its embodiments to existing as well as new ladders.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ladders (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL1040946 | 2014-09-11 | ||
NL1041405 | 2015-07-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2995766A1 true EP2995766A1 (de) | 2016-03-16 |
Family
ID=54359694
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15020156.4A Withdrawn EP2995766A1 (de) | 2014-09-11 | 2015-09-10 | Griffleiter |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP2995766A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2564255A (en) * | 2017-05-31 | 2019-01-09 | Rojak Design Ltd | Ladder stabiliser |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB632311A (en) | 1947-01-13 | 1949-11-21 | Sidney Victor Lester | Improvements relating to ladders |
US3083788A (en) * | 1961-11-24 | 1963-04-02 | Bauer Mfg Company | Ladder leveling apparatus |
GB2216168A (en) | 1988-02-18 | 1989-10-04 | Barrie Weatherall | Ladder stabiliser |
US20050092551A1 (en) * | 2003-10-31 | 2005-05-05 | Caldwell Mark J. | Ladder safe base and method for utilization thereof |
EP1669538A1 (de) | 2004-12-08 | 2006-06-14 | Antoon Teel | Leiter mit Rutschverhinderungsstruktur |
BE1018435A3 (nl) | 2007-06-04 | 2010-11-09 | Missotten Marc | Ladderbeveiliging. |
GB2489328A (en) | 2011-03-22 | 2012-09-26 | Easi Dec Access Systems Ltd | Ladder with selectively actuable roof ridge hook |
-
2015
- 2015-09-10 EP EP15020156.4A patent/EP2995766A1/de not_active Withdrawn
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB632311A (en) | 1947-01-13 | 1949-11-21 | Sidney Victor Lester | Improvements relating to ladders |
US3083788A (en) * | 1961-11-24 | 1963-04-02 | Bauer Mfg Company | Ladder leveling apparatus |
GB2216168A (en) | 1988-02-18 | 1989-10-04 | Barrie Weatherall | Ladder stabiliser |
US20050092551A1 (en) * | 2003-10-31 | 2005-05-05 | Caldwell Mark J. | Ladder safe base and method for utilization thereof |
EP1669538A1 (de) | 2004-12-08 | 2006-06-14 | Antoon Teel | Leiter mit Rutschverhinderungsstruktur |
BE1018435A3 (nl) | 2007-06-04 | 2010-11-09 | Missotten Marc | Ladderbeveiliging. |
GB2489328A (en) | 2011-03-22 | 2012-09-26 | Easi Dec Access Systems Ltd | Ladder with selectively actuable roof ridge hook |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2564255A (en) * | 2017-05-31 | 2019-01-09 | Rojak Design Ltd | Ladder stabiliser |
GB2564255B (en) * | 2017-05-31 | 2023-01-25 | Rojak Design Ltd | Ladder stabiliser |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20160917 |