EP0940556A2 - Dispositif pour échelle - Google Patents

Dispositif pour échelle Download PDF

Info

Publication number
EP0940556A2
EP0940556A2 EP99850031A EP99850031A EP0940556A2 EP 0940556 A2 EP0940556 A2 EP 0940556A2 EP 99850031 A EP99850031 A EP 99850031A EP 99850031 A EP99850031 A EP 99850031A EP 0940556 A2 EP0940556 A2 EP 0940556A2
Authority
EP
European Patent Office
Prior art keywords
ladder
hand rail
side member
hand
fastening means
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
Application number
EP99850031A
Other languages
German (de)
English (en)
Other versions
EP0940556A3 (fr
EP0940556B1 (fr
Inventor
Elon Persson
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.)
Scando AB
Original Assignee
Scando AB
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 Scando AB filed Critical Scando AB
Publication of EP0940556A2 publication Critical patent/EP0940556A2/fr
Publication of EP0940556A3 publication Critical patent/EP0940556A3/fr
Application granted granted Critical
Publication of EP0940556B1 publication Critical patent/EP0940556B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C7/00—Component parts, supporting parts, or accessories
    • E06C7/18—Devices for preventing persons from falling
    • E06C7/181—Additional gripping devices, e.g. handrails
    • E06C7/182—Additional gripping devices, e.g. handrails situated at the top of the ladder
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C7/00—Component parts, supporting parts, or accessories
    • E06C7/18—Devices for preventing persons from falling
    • E06C7/181—Additional gripping devices, e.g. handrails
    • E06C7/183—Additional gripping devices, e.g. handrails situated along the ladder

Definitions

  • the present invention relates to an arrangement on a ladder according to the preamble of claim 1.
  • the invention specifically relates to a hand rail, adapted to be mounted on a ladder, a step ladder or the like.
  • a feeling of non-security may occur when climbing up the ladder and also during work from the top step or top steps.
  • the same non-security may occur when climbing off a roof, e.g., onto the ladder which may be resting with an upper section thereof towards the roof edge, or towards the edge of a working platform, etc.
  • Said feeling of non-security may at least partly be overcome when the ladder is provided with a hand rail, attached to a side member of the ladder.
  • a hand rail disclosed in GB 2,274,673.
  • This hand rail is attached to a top step of the ladder to be laterally displaceable between the side members thereof.
  • This hand rail is not adjustable in a longitudinal direction, as is the hand rail of the present invention.
  • the hand rail of GB 2,274,673 is disclosed to be folded from an operative position to a resting position, wherein the hand rail is extended in parallel with the general plane of the ladder. In the operative position, a pin projecting from a step of the ladder is inserted into a groove formed in the rail, whereby the hand rail is projecting substantially transversally from the general plane of the ladder.
  • the hand rail of GB 2,274,673 is not, contrary to the hand rail of the present invention, adjustable in the operative position to assume various inclinations in respect of the longitudinal direction of the ladder, but merely to be folded to a rest position to facilitate transport or storage thereof.
  • U.S. 2,640,641 discloses a step ladder having a bar, which is adjustable in the longitudinal direction of the ladder, and which may be raised from a resting position wherein the bar is extended alongside the ladder, to an operative position wherein the ladder is extended in parallel with, and slightly above, a side member of the ladder.
  • the bar In the operative position, the bar is longitudinally adjustable to extend beyond and above the top step of the ladder, more or less to function as an extension of the side member of the ladder.
  • the bar is locked in the raised, and eventually extended, operative position by means of two latches which are pivotally attached to the side member of the ladder and to the bar, respectively. In the raised position, the latches engage the bar to prevent it from sliding down towards the bottom end of the ladder.
  • the bar is not capable of adjustment into various and desired inclinations relative to the longitudinal direction of the ladder, or provides a similar free and unhindered grip by the hand when climbing the ladder, as is provided by the hand rail of the present invention through the freely supported, outer rail member.
  • the attachment of the bar of U.S. 2,640,641 is not, contrary to the attachment of the present invention, displaceable on the side member of the ladder, and the cited bar does not provide the desired security upon climbing because a downwardly directed load, from the hand gripping the bar, would seemingly cause the latches to lose the engagement with the bar, thereby releasing the bar from its position.
  • the present invention has for its object to provide a hand rail which offers a support for the user, not only upon climbing the ladder but also in work operations from the ladder, and specifically when working from the upper or top steps of the ladder.
  • a hand rail according to the invention, comprising the features of claim 1, wherein according to a first aspect of the invention, the hand rail is designed to be longitudinally adjustable in relation to the ladder and on desire to extend beyond the upper end of the ladder.
  • a hand rail which is adjustable to assume various inclined positions in relation to the side member of the ladder, thereby to provide more space when climbing the ladder, and to save space during transport, resp.
  • a hand rail wherein the guide rail is freely suspended without hindering fastening means, whereby the hand of the user may be guided along the entire length of the rail without having to shift the grip upon climbing the ladder.
  • the invention provides:
  • the hand rail 1 comprises a pair of elongated elements running in parallel.
  • a first or inner element 2 is designed and adapted to be attached, by fastening means 3, to a side member 4 of a ladder.
  • a second or outer element 5 is designed to provide a guide rail 5.
  • the inner element 2 is connected to the outer element 5 through arch shaped sections, formed in the ends of the elements 2 and 5, respectively, so that the elements 2 and 5 are preferably integrally formed by bending a single work-piece.
  • the elements 2 and 5 may be connected in the ends, e.g. by welding or bolting a separately formed brace (not shown).
  • the elements 2 and 5 are formed in an endless loop.
  • a plane extended between the elements 2 and 5 is totally free from transverse connections in the entire length of the hand rail.
  • the outer element or guide rail 5 is unhindered to be grasped by a hand in its entire length between the arch shaped end sections of the hand rail.
  • the elements 2 and 5 preferably have a circular or otherwise rounded cross section, see fig.2, and may be produced from a tube work piece. However, work pieces of other cross sectional shape may also be considered.
  • Fig. 2 shows the end view of a fastening means 3 incorporated in the hand rail.
  • the fastening means 3 is designed to cooperate with a hand rail having an inner element 2 of circular cross section.
  • the fastening means 3 is shown separated and before mounting the hand rail to a ladder.
  • the fastening means 3 comprises a brace piece 6 and a clamp piece 7, mutually connectable through a connection means 8.
  • the clamp 7 and brace 6 are formed in one end to be clamped to the side member 4 of the ladder, and in the other end to be clamped to the inner element 2 when the clamp 7 and brace 6 are mutually connected.
  • the connection means 8 may include, as illustrated in the drawing, a bolt and nut connection, and may alternatively include a threaded bolt engaging a bore in the clamp or brace, respectively.
  • the connection means 8 may also alternatively include a lever lock, having e.g. an eccentric lock arm.
  • a fastening means may comprise separate connection means for individually clamping to the ladder and hand rail, respectively, wherein a clamp piece in such case would be provided as two separate details.
  • the hand rail When the hand rail is attached to the side member of the ladder by clamping through the fastening means 3, individual positioning of the hand rail 1 is possible and includes a longitudinally adjustable attachment alongside the ladder, and also an inclined attachment in respect of the side member as seen in the longitudinal direction of the ladder.
  • the invention is shown herein to cooperate with a conventional ladder.
  • the hand rail 1, guide rail and fastening means may be formed and designed to cooperate also with step-ladders, ladders on ships, roof-ladders, fire-ladders, bridge-ladders, etc., and similar climbing aids adapted for work in high positions or movements between different levels.
  • the scope of invention is not limited to the combination, shown herein as an example only.
  • the expression "side member” shall therefore be understood as a constructional element which may be designed for supporting the steps, but may also include any other longitudinal, active or inactive element for supporting the ladder.
  • the fastening means 9 are clamped to the side member of a ladder.
  • the fastening means 9 comprises a bore for accommodation of an inner element 2' having a circular cross section.
  • a radial slit opening 10 is formed to cover the width of the fastening means 9.
  • At least one side of the fastening means 9, directed towards an end of the ladder, has one or more notches 11 formed to open in radial direction into the bore. Heels 12 are formed on the inner element 2' and designed to cooperate with the notches 11, thereby providing a bayonet lock for alternative attachment of a hand rail to a ladder.
  • the alternative fastening means 3' of fig. 4 comprises a brace 6' and a clamp 7', substantially designed as corresponding elements of the first fastening means 3.
  • the fastening means 3' is formed with a heel 13 to accommodate an inner element 2".
  • Said heel 13 is designed to cooperate with one or more longitudinal grooves 14, formed on the outside of the inner element 2".
  • the grooves 14 are preferably extended in the entire length of the inner element 2".
  • the clamping fastening means may be designed to cooperate with side members of varying cross sectional profiles, or include spacing elements or inserts e.g. made of rubber or other elastic material, so as to be attachable to ladder sides of varying shapes.
  • the fastening means may be alternatively formed and designed for receiving the inner element 2 in a clamping attachment, wherein the hand rail is adjustable in longitudinal direction, and to have a desired inclination with respect of the steps of the ladder.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ladders (AREA)
EP19990850031 1998-03-06 1999-03-05 Dispositif pour échelle Expired - Lifetime EP0940556B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9800737 1998-03-06
SE9800737A SE521300C2 (sv) 1998-03-06 1998-03-06 Handräcke för stegar

Publications (3)

Publication Number Publication Date
EP0940556A2 true EP0940556A2 (fr) 1999-09-08
EP0940556A3 EP0940556A3 (fr) 2000-03-01
EP0940556B1 EP0940556B1 (fr) 2006-01-04

Family

ID=20410450

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19990850031 Expired - Lifetime EP0940556B1 (fr) 1998-03-06 1999-03-05 Dispositif pour échelle

Country Status (3)

Country Link
EP (1) EP0940556B1 (fr)
DE (1) DE69929302T2 (fr)
SE (1) SE521300C2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1486641A1 (fr) 2003-06-11 2004-12-15 Macc Main courante coulissante escamotable et réglable à volonté
US20220089254A1 (en) * 2018-08-06 2022-03-24 Robin Sabow Attachments for a collapsible marine ladder

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2640641A (en) 1951-06-15 1953-06-02 Joseph S Tepper Safety rail attachment for stepladders
GB2274673A (en) 1993-01-28 1994-08-03 Kevin Walsh Step ladder

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3316839C2 (de) * 1983-05-07 1985-03-21 Heinrich Urdorf Zürich Zenhäusern Schutzgitter für Leitern
FR2691488A1 (fr) * 1992-05-22 1993-11-26 Krattli Christian Dispositif de fixation d'une canne, ou crosse d'accès à l'intérieur d'ouvrages de maçonnerie tels que des puits.

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2640641A (en) 1951-06-15 1953-06-02 Joseph S Tepper Safety rail attachment for stepladders
GB2274673A (en) 1993-01-28 1994-08-03 Kevin Walsh Step ladder

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1486641A1 (fr) 2003-06-11 2004-12-15 Macc Main courante coulissante escamotable et réglable à volonté
FR2856102A1 (fr) 2003-06-11 2004-12-17 Macc Main courante coulissante escamotable et reglable a volonte
US20220089254A1 (en) * 2018-08-06 2022-03-24 Robin Sabow Attachments for a collapsible marine ladder
US12522325B2 (en) * 2018-08-06 2026-01-13 Robin Sabow Attachments for a collapsible marine ladder

Also Published As

Publication number Publication date
SE9800737D0 (sv) 1998-03-06
DE69929302T2 (de) 2006-08-31
EP0940556A3 (fr) 2000-03-01
DE69929302D1 (de) 2006-03-30
SE521300C2 (sv) 2003-10-21
SE9800737L (sv) 1999-09-07
EP0940556B1 (fr) 2006-01-04

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