EP0079852A2 - Echelle à usages multiples - Google Patents

Echelle à usages multiples Download PDF

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Publication number
EP0079852A2
EP0079852A2 EP82810464A EP82810464A EP0079852A2 EP 0079852 A2 EP0079852 A2 EP 0079852A2 EP 82810464 A EP82810464 A EP 82810464A EP 82810464 A EP82810464 A EP 82810464A EP 0079852 A2 EP0079852 A2 EP 0079852A2
Authority
EP
European Patent Office
Prior art keywords
ladder
side rails
rollers
conductor
ladder part
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Withdrawn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
EP82810464A
Other languages
German (de)
English (en)
Other versions
EP0079852A3 (fr
Inventor
Ruedi Giezendanner
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
Application filed by Individual filed Critical Individual
Publication of EP0079852A2 publication Critical patent/EP0079852A2/fr
Publication of EP0079852A3 publication Critical patent/EP0079852A3/fr
Withdrawn legal-status Critical Current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
    • E06C1/00—Ladders in general
    • E06C1/02—Ladders in general with rigid longitudinal member or members
    • E06C1/32—Ladders with a strut which is formed as a ladder and can be secured in line with the ladder
    • 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
    • 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
    • E06C1/397—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 characterised by having wheels, rollers, or runners

Definitions

  • the invention relates to a ladder designed as a multipurpose device comprising two separate ladder parts which can be combined to form a step ladder and a single ladder.
  • Multi-purpose ladders are already known which are equipped with special joints so that they can be used as stepladder and as leaning ladder (CH-PS 491 278 and 611 971). It is also known to equip ladder-like scaffolds with rollers so that they can be easily transported when folded (CH-PS 538 043).
  • the first ladder part on the side rails has tabs provided with holding devices which guide the inserted second ladder part, in that the upper ends of the side rails are bent at the second ladder part, and that rollers are also fastened in the region of the lower ends of the side rails are, and that between the rollers a foldable from the level of the side rails support plate for cargo is arranged, such that the second ladder part can be used as a hand truck, the bent ends of its side rails serve as handles.
  • the ladder consists of two separate ladder parts 1 and 2, which can be completely separated from one another.
  • the ladder part 1 has straight side rails 3 in a side view, for example made of a hollow profile made of light metal.
  • the two side rails 3 are connected to one another by steps 4.
  • 3 guide tabs 5 are fastened to the outer sides of the side rails, on which short, mutually directed holding devices, which can be bolts, for example, are fastened.
  • the tabs 5 serve to guide and hold the conductor part 2, as will be explained.
  • a guide plate 7 with a bore 8 is attached to each of the two side tracks 3. These sheets 7 also serve to hold the conductor part 2.
  • the conductor part 2 has two side rails 9, which are also made of a hollow profile, for example made of light metal. They are connected to one another by the rungs 10.
  • the upper ends 9a of the two side rails 9 are angled at an angle of approximately 60 ° when viewed in side view.
  • two carriers 11 are fastened on the inside, which bear an axle 12 with two rollers 13.
  • a pawl 15 which can be pivoted about a bolt 14 is arranged in the cavity of each side member 9, the hook-shaped end of which protrudes through an opening 16 in the side member 9.
  • a spring 17 presses the pawl 15 into the position shown in Fig. 1a.
  • both pawls 15 can be completely sunk against the pressure of the springs 17 into the cavity of the side rails 9.
  • Both side rails 9 are also provided with a rigid cam 18 in the area of the bend.
  • the part 19a is equipped with pivot pins 20 which are rotatably mounted in the side rails 9.
  • the support plate 19 can be swung out from the position in the plane of the side rails 9 (FIG. 1 a) by 90 °, such as this is shown in Fig. 4.
  • Resilient pawls 21, 22 fix the support plate 19 in the folded and pivoted-out position.
  • 1 shows the ladder in the arrangement of the two ladder parts 1, 2 as a stepladder (fixed ladder).
  • the side rails 9 of the conductor part 2 are inserted into the guide tabs 5, and the rigid cams 18 rest on the retaining bolts 16.
  • the bent ends 9a are supported on the side rails 3 of the conductor part 1.
  • the rollers 13 do not touch the floor.
  • Fig. 2 shows the arrangement of the two conductor parts 1, 2 as a single ladder.
  • the spars 9 are guided at their lower ends by the guide tabs 5 with their bolts 6.
  • the pivoted pawls 15 engage in the hollow end faces of the side rails 3 of the conductor part 1.
  • the offset of the upper ends 9a of the ladder part 2 ensures that the uppermost rung 10 of the ladder part 2 can also be entered.
  • Fig. 3 shows the two side parts 1, 2 in the transport position and when not in use.
  • the two sheets 7 overlap the side members 9 of the conductor part 2.
  • the bore 8 in Sheet 7 is coaxial with a corresponding hole 8a in the side member 9.
  • a pin or cotter pin not shown, into the two holes 8 and 8a, the conductor parts are connected to each other.
  • the pin or cotter pin can be connected to the side rail 3 by a short chain or the like.
  • another known holding device for example a pawl, could also be provided.
  • the ladder can be moved using the castors for transport.
  • the conductor part 2 can be completely pulled out of the guide tabs 5 of the conductor part 1. After the support plate 19 has been unfolded, it can then be used as a hand truck according to FIG. 4, the ends 9a serving as handles. 5 can be used separately as a small single ladder.
  • the ladder part 2 according to FIG. 6 can also be used as a four-wheeled transport cart for piece goods.
  • the additional device consists of two sleeves 23, which are connected by a cross bar 24.
  • the sleeves and the crossbar form a holder which can be plugged onto the ends 9a of the side rails 9.
  • two commercially available castors 25 which are rotatable about vertical swivel axes in the driving position are mounted. If desired, the holder could also be equipped with a pull rod (drawbar) be equipped.
  • the ladder which is equipped as a multi-purpose device, can be used in a variety of ways in the household as well as in commercial and industrial companies.
  • FIG. 7 shows a further variant of the latching device 30, with the aid of which the first conductor part 1 and the second conductor part can be combined to form a single ladder according to FIG. 2.
  • a pawl 32 On the inside of each side member 9 of the ladder part 2 there is a pawl 32 which can be pivoted about a bolt 31 and which engages with an angle 33 of the first ladder part 1 at one end and abuts a stop 34 of the second ladder part 2 at the other end. Both pawls 32 are connected to one another via a web 35.
  • the latching device 30 can be pivoted into a vertical rest position on the web 35.
  • FIGS. 8a and 8b show a further variant of an additional device, with the aid of which the ladder part 2 according to FIG. 6 can be used as a transport cart.
  • the additional device can be plugged and fastened onto the side rails 9 of the conductor part 2, for example in the vicinity of the ends 9a.
  • the additional device consists of two brackets 41, which can be, for example, square tubes, two swivel castors 42 screwed to the brackets 41 at the bottom with cylinder screws 46, and two rigidly fastened brackets 43 and two slidable brackets 44 which are fastened to the brackets with cheese head screws 45 and knurled screws 40.
  • a holder 48 for a drawbar can additionally be fastened to the supports 41 by means of screws 47.

Landscapes

  • Ladders (AREA)
EP82810464A 1981-11-13 1982-11-02 Echelle à usages multiples Withdrawn EP0079852A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH7314/81 1981-11-13
CH731481 1981-11-13

Publications (2)

Publication Number Publication Date
EP0079852A2 true EP0079852A2 (fr) 1983-05-25
EP0079852A3 EP0079852A3 (fr) 1984-05-30

Family

ID=4323185

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82810464A Withdrawn EP0079852A3 (fr) 1981-11-13 1982-11-02 Echelle à usages multiples

Country Status (3)

Country Link
US (1) US4448282A (fr)
EP (1) EP0079852A3 (fr)
DE (1) DE8231497U1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2129860A (en) * 1982-08-13 1984-05-23 Eastwood & Associates Ltd C J A convertible ladder/trolley device
DE19940942A1 (de) * 1999-08-23 2001-03-22 Tim Bittner Gerätekombination aus Transportwagen, Sackkarre, Transportroller für hängende Güter, Bootswagen bzw. Transportwagen für großflächige Güter, Einhängeleiter und Floß/Schwimmhilfe in starrer und faltbarer Ausführung
CN101949257A (zh) * 2010-09-01 2011-01-19 阳江市飞轮金属制品有限公司 可折叠脚轮梯车

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9414120U1 (de) * 1994-08-31 1994-12-15 Iliesen, Constantin-Adrian, Dipl.-Ing., 46348 Raesfeld Karren-/Leiter-Multifunktionsgerät
US5638918A (en) * 1995-07-18 1997-06-17 Hebda; Dorothy E. Ladder conversion kit
US6158749A (en) * 1997-09-25 2000-12-12 Cosco Management, Inc. Step stool and dolly apparatus
WO1999055997A1 (fr) * 1998-04-28 1999-11-04 Henrik Lindberg Echelle combinee a trois fonctions de transport
US6443261B1 (en) 1999-08-13 2002-09-03 Cosco Management, Inc. Step stool
US6328330B1 (en) 2000-05-02 2001-12-11 Gregory John Haaser Hand truck attachment for a ladder
US7036631B2 (en) * 2001-08-10 2006-05-02 American Innovations, Inc. Wheel attachment for ladder
US6585084B2 (en) * 2001-09-12 2003-07-01 Donald C. Gannon Ladder assist wheel
US6651774B2 (en) 2002-02-19 2003-11-25 Hoe Gwan Yoo Combined stepladder and hand truck assembly
US6688426B1 (en) 2002-03-02 2004-02-10 Harry Mikros Wheel extension and lift device for ladders
US6877586B2 (en) * 2003-04-11 2005-04-12 Sylmark Holdings Limited Hinge system for combination hand truck, step ladder and dolly device
US6880835B2 (en) * 2003-04-11 2005-04-19 Sylmark Holdings Limited Combination hand truck, step ladder and dolly
US7104362B2 (en) * 2003-08-27 2006-09-12 Cosco Management, Inc. Foldable step ladder with leg aligner and handle
US7093840B2 (en) * 2004-03-01 2006-08-22 Isotec, Inc. Multi-purpose combined ladder/cart assembly
CN104563847A (zh) * 2014-11-11 2015-04-29 国家电网公司 多功能手车梯
WO2017062004A1 (fr) * 2015-10-08 2017-04-13 Thomas Steiner Roue d'échelle
US11492847B2 (en) 2020-02-24 2022-11-08 Thomas Yoo Ladder

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1579701A (en) * 1924-10-09 1926-04-06 Lankershim Ladder Company Ladder
US3954155A (en) * 1974-04-23 1976-05-04 Orlando Guidara Stepladder dolly
GB1519956A (en) * 1975-10-15 1978-08-02 Newman P Comination sack truck
US4121855A (en) * 1977-05-11 1978-10-24 Magline, Inc. Hand truck construction
US4155422A (en) * 1978-07-03 1979-05-22 White Metal Rolling & Stamping Corp. Combination step, stair well and extension ladders

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3104889A (en) * 1963-09-24 branch
US1116779A (en) * 1911-07-17 1914-11-10 George C Witt Combination-truck.
US1423366A (en) * 1920-09-21 1922-07-18 Henry C Snook Combined ironing board, stepladder, and house truck
GB444967A (en) * 1934-10-06 1936-04-01 William Clark Improvements in ladders
US3111193A (en) * 1961-08-23 1963-11-19 Roxton C Mckinnie Combination step-extension ladder with an adjustable pail shelf
GB1250781A (fr) * 1967-12-13 1971-10-20
GB1288251A (fr) * 1969-01-30 1972-09-06
DE2119218C3 (de) * 1971-04-21 1975-07-24 Koettgen & Cie, Gmbh, 5070 Bergisch- Gladbach Zusammenlegbares Gerüst
DE7540295U (de) * 1975-12-18 1976-04-29 7151 Burgstetten Mehrzweckleiter
US4106590A (en) * 1977-03-21 1978-08-15 Lords Iii Research & Development Co. Combined hand truck and ladder
US4258826A (en) * 1979-03-28 1981-03-31 Murray Douglas J Combination stepladder and load lifting apparatus

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1579701A (en) * 1924-10-09 1926-04-06 Lankershim Ladder Company Ladder
US3954155A (en) * 1974-04-23 1976-05-04 Orlando Guidara Stepladder dolly
GB1519956A (en) * 1975-10-15 1978-08-02 Newman P Comination sack truck
US4121855A (en) * 1977-05-11 1978-10-24 Magline, Inc. Hand truck construction
US4155422A (en) * 1978-07-03 1979-05-22 White Metal Rolling & Stamping Corp. Combination step, stair well and extension ladders

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2129860A (en) * 1982-08-13 1984-05-23 Eastwood & Associates Ltd C J A convertible ladder/trolley device
DE19940942A1 (de) * 1999-08-23 2001-03-22 Tim Bittner Gerätekombination aus Transportwagen, Sackkarre, Transportroller für hängende Güter, Bootswagen bzw. Transportwagen für großflächige Güter, Einhängeleiter und Floß/Schwimmhilfe in starrer und faltbarer Ausführung
DE19940942C2 (de) * 1999-08-23 2001-12-13 Tim Bittner In eine Steighilfe umwandelbares, von Hand bewegbares Transportgerät
CN101949257A (zh) * 2010-09-01 2011-01-19 阳江市飞轮金属制品有限公司 可折叠脚轮梯车

Also Published As

Publication number Publication date
EP0079852A3 (fr) 1984-05-30
DE8231497U1 (de) 1983-05-05
US4448282A (en) 1984-05-15

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Effective date: 19850131