EP0593369A1 - Sicherheitsabseilvorrichtung - Google Patents

Sicherheitsabseilvorrichtung Download PDF

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Publication number
EP0593369A1
EP0593369A1 EP93420383A EP93420383A EP0593369A1 EP 0593369 A1 EP0593369 A1 EP 0593369A1 EP 93420383 A EP93420383 A EP 93420383A EP 93420383 A EP93420383 A EP 93420383A EP 0593369 A1 EP0593369 A1 EP 0593369A1
Authority
EP
European Patent Office
Prior art keywords
rope
pulley
flange
lever
descender
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
EP93420383A
Other languages
English (en)
French (fr)
Other versions
EP0593369B1 (de
Inventor
Jean-Marc Hede
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.)
Zedel SAS
Original Assignee
Zedel SAS
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 Zedel SAS filed Critical Zedel SAS
Publication of EP0593369A1 publication Critical patent/EP0593369A1/de
Application granted granted Critical
Publication of EP0593369B1 publication Critical patent/EP0593369B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B1/00—Devices for lowering persons from buildings or the like
    • A62B1/06—Devices for lowering persons from buildings or the like by making use of rope-lowering devices
    • A62B1/14—Devices for lowering persons from buildings or the like by making use of rope-lowering devices with brakes sliding on the rope
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B29/00—Apparatus for mountaineering
    • A63B29/02—Mountain guy-ropes or accessories, e.g. avalanche ropes; Means for indicating the location of accidentally buried, e.g. snow-buried, persons

Definitions

  • the invention relates to a descender used for the descent of a person along a rope, comprising a first fixed flange for supporting a pulley and a stud or pad separated from each other by an internal space for passage of the rope, and a second movable flange capable of occupying a separated position allowing winding in a first predetermined direction of the rope on the pulley and the stud in the passage space, and a closed position in which the rope is trapped in space, the displacement of the second flange from the separated position to the closed position, and vice versa, taking place in a plane substantially parallel to the first flange by manual action of the user.
  • the function of a descender is to allow a user to descend along a long rope safely.
  • the pulley is shaped as a movable cam associated with a release handle. If the handle is released during a downward movement, the tension on the rope urges the cam towards a locking position, in which the rope is pressed by the cam against a fixed stud or stop. This results in an automatic stop of the lowering movement, and the person remains securely attached to the rope.
  • the proper functioning of the descender remains dependent on a certain direction of winding of the rope on the pulley, which direction is known to all specialists, and indicated on the device. The risk of an incorrect direction of passage of the rope cannot be excluded when the descender is handled by novice or inexperienced people.
  • the self-locking effect of the rope is not achieved in the event of assembly error, and this results in a malfunction of the descender, which can have unfortunate consequences for safety.
  • the object of the invention is to provide a safety descender for rope, which does not endanger the life of a person when the direction of passage of the rope in the descender is incorrect.
  • the descender according to the invention is characterized in that in the internal space for passage of the rope is arranged an auxiliary braking lever mounted with pivoting limited in the vicinity of the pulley between an inactive position for unlocking the rope for said first direction winding position and an active locking position, in which a wedging surface of the lever presses the rope against the pulley, the pivoting of the lever from the inactive position to the active position being effected automatically in the presence of a tension force on the rope, and following an incorrect winding in a second direction opposite to the first direction.
  • auxiliary braking lever occurs exclusively in the event of an error in the direction of passage of the rope in the descender, when the user attempts to initiate the descent movement.
  • the passage of the auxiliary lever to the rope locking position prevents any downward movement, and blocks the user in the presence of tension on the rope.
  • the blockage remains as long as the descender remains under load by the tension of the rope. User safety is total, despite improper handling of the rope when winding on the pulley.
  • the stud is associated with a fixed spacer for positioning the rope, said spacer being inserted between the two flanges and shaped to delimit the two opposite ends of access to the passage space of the rope in the descender.
  • the pulley is shaped as a cam articulated on a first axis of the first flange and associated with an actuating handle.
  • the shoe has a braking surface against which the rope is pressed by the cam in the event of release of the handle for the first direction of winding of the rope, the blocking action by the cam acting in the vicinity of the 'upper opening.
  • the auxiliary braking lever is articulated on a second axis of the first flange, at an intermediate point located between the spacer and the pulley, the second axis being substantially parallel to the first axis, such that the angular movement between the active and inactive positions of the wedging surface of the lever takes place in the vicinity of the lower orifice of the space.
  • the pulley is fixedly mounted on the first flange.
  • the first blocking does not exist, but the second blocking occurs normally in the event of an error in handling the rope.
  • a descender designated by the general reference 10 is used for the descent of one or more people along a rope 12.
  • the descender 10 has a first fixed flange 14, having a first axis 15 of articulation of a movable pulley 16 shaped as a cam 17, and a fixed positioning spacer 18, separated from the pulley 16 by a space 20 for passage of the rope 12.
  • the pulley 16 is provided with a groove 21 for guiding the rope 12 during its S-winding in the descender 10.
  • the pulley 16 is mechanically connected to a control mechanism 22 provided with an actuating handle 24, which is mounted with limited pivoting between a raised blocking position and a lowered position for unlocking the rope 12.
  • the upper part of the the fixed spacer 18 is arranged in a fixed pad or shoe 26 having a braking surface 28 against which the rope 12 is pressed by the locking action of the cam 17 in the raised position of the handle 24.
  • the intermediate part of the spacer 18 extends externally along the right side of the first flange 14, and has an internal curved sector 30 substantially centered on the axis 15.
  • the combined presence of the groove 21 of the pulley 16, and of the concave curved sector 30 of the spacer 18 makes it possible to obtain optimum positioning and guidance of the cord 12 in the space 20.
  • the lower part of the positioning spacer 18 comprises a cross member 32 extending horizontally between the two opposite lateral edges of the flange 14.
  • An auxiliary braking lever 34 is pivotally mounted on a second axis 36 secured to the flange 14 at a point intermediate located between the cross member 32 and the pulley 16.
  • the second axis 36 of the lever 34 extends parallel to the first axis 15 of the pulley 16, in a direction perpendicular to the first fixed flange 14.
  • the angular movement of the auxiliary lever 34 takes place in the space 20 between an inactive position (FIGS. 1 and 4) in which the lever 34 is supported on the cross-member 32 playing the role of end-of-travel stop, and an active position. (FIG. 5) in which a wedging surface 38 of the lever 34 presses the rope 12 against the pulley 16.
  • a return spring 40 formed as an example by a flexion or torsion spring, is wound around the axis 36, and biases the lever 34 towards the inactive position.
  • the auxiliary lever 34 remains permanently maintained in the inactive position, and the rope 12 can slide freely on the pulley 16 during the descent.
  • the displacement by pivoting towards the active position of the lever 34 occurs exclusively during the downward movement when the direction of passage of the rope 12 in the space 20 is incorrect.
  • a second movable flange 42 having a shape similar to that of the first flange 14, is pivotally mounted on a third axis 44 passing through the spacer 18 in the vicinity of the shoe 26.
  • the displacement of the second flange 42 takes place in a plane parallel to the first flange 14 by manual action of the user between a closed position ( Figures 2 and 3), in which the cord 12 is trapped in the space 20, and a separated position (not shown) allowing the establishment or the 'removal of the cord 12.
  • the passage of the second flange 42 to the separated position requires a pivoting movement of amplitude greater than a quarter turn, exerted in the direction of clockwise.
  • the two parallel flanges 14, 42 are separated from each other by a transverse interval, having a thickness which corresponds to that of the spacer 18.
  • Each flange 14, 42 has at its base a circular or oblong orifice 46, 48 intended for the passage of a carabiner (not shown) for attaching the descender 10 to the user's harness.
  • a carabiner not shown
  • the two orifices 46, 48 are aligned (FIG. 2), and the positioning of the carabiner keeps the descender 10 closed by preventing any untimely opening of the second flange 42.
  • the first axis 15 of the pulley 16, the second axis 36 of the auxiliary lever 34 and the orifice 46 of the flange 14 are substantially aligned in a vertical direction perpendicular to the crosspiece 32 of the spacer 18, and to the lever 34 in the inactive position .
  • the operation of the safety descender 10 according to the invention is as follows:
  • the upstream strand 1 2A enters the space 20 through the upper orifice 50, and leaves it through the lower orifice 52 by forming a half-loop.
  • the own weight of the downstream strand 12B applies the rope 12 empty against the wedging surface 38 of the auxiliary lever of the 34, and keeps the latter in the inactive position in the absence of tension force on the rope.
  • the pulley 16 could be fixed. In this case, the mechanism 22 and its handle 24 are eliminated.
  • the descender 10 is made of metallic material based on aluminum. It is nevertheless possible to manufacture the spacer 18 by molding a plastic material. In this case, the shoe 26 is formed by a separate metallic part attached to the spacer 18.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Pulmonology (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Emergency Lowering Means (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
EP93420383A 1992-10-12 1993-09-24 Sicherheitsabseilvorrichtung Expired - Lifetime EP0593369B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9212325 1992-10-12
FR9212325A FR2696647B1 (fr) 1992-10-12 1992-10-12 Descendeur de sécurité pour corde.

Publications (2)

Publication Number Publication Date
EP0593369A1 true EP0593369A1 (de) 1994-04-20
EP0593369B1 EP0593369B1 (de) 1996-12-18

Family

ID=9434559

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93420383A Expired - Lifetime EP0593369B1 (de) 1992-10-12 1993-09-24 Sicherheitsabseilvorrichtung

Country Status (7)

Country Link
US (1) US5360083A (de)
EP (1) EP0593369B1 (de)
JP (1) JP3231513B2 (de)
KR (1) KR940008710A (de)
DE (1) DE69306727T2 (de)
ES (1) ES2096897T3 (de)
FR (1) FR2696647B1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0688581A1 (de) * 1994-06-23 1995-12-27 Zedel Entkuppelbares selbstblockierendes Abseilgerät
FR2721523A1 (fr) * 1994-06-23 1995-12-29 Zedel Descendeur à verrouillage de la poulie pour le blocage permanent de la corde.
CN102716554A (zh) * 2012-06-05 2012-10-10 何少敦 一种悬吊器
WO2013166846A1 (zh) * 2012-05-10 2013-11-14 He Shaodun 一种悬吊器
CN103619422A (zh) * 2011-05-18 2014-03-05 普罗帝克保护技术有限公司 具有防恐慌功能的自制动下降器

Families Citing this family (46)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19516645C1 (de) * 1995-05-05 1996-09-12 Miroslav Dipl Ing Pejcinovic Selbstblockierende Seilbremse zur Selbstsicherung beim Klettern
ES2181807T3 (es) * 1995-12-27 2003-03-01 S S E Sistemi Di Sicurezza Eur Dispositivo para amortiguar caidas con freno mejorado.
US5921353A (en) * 1997-01-21 1999-07-13 Day; Steven T. Adjustable lifting sling
US6129033A (en) * 1998-02-23 2000-10-10 Jarrell; John L. Pulley-or roller-type block with lock arrangement
CA2334410C (en) 2000-02-08 2005-10-25 Basecamp Innovations, Ltd. Force limiting rope brake
FR2814082B1 (fr) * 2000-09-20 2003-11-28 Heightec Group Ltd Dispositif de securite pour controler la descente et/ou le hissage d'une charge sur une corde
GB0023137D0 (en) * 2000-09-21 2000-11-01 Northeast M S A cryogenic invention for the future
KR20010088531A (ko) * 2001-08-02 2001-09-28 정진택 고소 작업용 지지 로프 제어구
US20030051944A1 (en) * 2001-09-14 2003-03-20 Shea Richard D. Descent control device
US6843346B2 (en) * 2002-04-18 2005-01-18 Great Trangs Holdings, Inc. Belay device for climbers
US20040238277A1 (en) * 2003-05-29 2004-12-02 John Kruse Mobile auto-belay apparatus
US7055651B2 (en) * 2003-09-09 2006-06-06 Simple Little Gizmos Llc Belay device
US6907960B2 (en) * 2003-09-18 2005-06-21 Gregory Lee Klingler Safe auto-locking belay override mechanism
WO2005089873A1 (en) * 2004-03-22 2005-09-29 Boris Rogelja Improved roping device
AU2005223872B2 (en) * 2004-03-22 2011-08-11 3M Innovative Properties Company Improved roping device
US7658264B2 (en) * 2005-03-16 2010-02-09 Kirk Martin Mauthner Combination descender, pulley and force limiting rope brake
KR100646731B1 (ko) 2005-04-28 2006-11-23 김선경 자일 브람제
US8316989B2 (en) * 2005-05-05 2012-11-27 The University Of Utah Research Foundation Universal belay device
US7757812B2 (en) * 2005-05-05 2010-07-20 The University Of Utah Research Foundation Universal belay device
US7963366B2 (en) * 2006-02-16 2011-06-21 Tony Christianson Split tube belay device
US7353910B2 (en) * 2006-03-05 2008-04-08 Gregory Lee Klingler Simple belay device
US7942241B2 (en) 2006-04-20 2011-05-17 Charles Christopher Botti Fire fighter's personal escape system
DE102007030360B3 (de) * 2007-06-29 2009-01-15 Suco Robert Scheuffele Gmbh & Co. Kg Abseilvorrichtung
FR2919196B1 (fr) * 2007-07-26 2009-10-09 Zedel Soc Par Actions Simplifi Descendeur autobloquant a poignee debrayable.
CA2721347C (en) * 2008-04-08 2017-01-17 Afl Telecommunications Llc Wedge deadend to support optical ground wire
US8348016B2 (en) * 2009-08-26 2013-01-08 Lewis Richard W Descender with fall arrest and controlled rate of descent
ES2368397B2 (es) * 2011-05-18 2012-03-13 Pablo Luis De Miguel Valiente Descensor autofrenante con función antip�?nico.
ES2382243B1 (es) * 2012-03-28 2012-12-17 Pablo Luis De Miguel Valiente Descensor autofrenante mejorado
EP2554219B1 (de) * 2011-08-03 2023-11-29 Camp S.p.A. Unterstützte Sicherheitsverriegelungsvorrichtung mit einer Antipanikvorrichtung
CN102824702B (zh) * 2012-09-04 2014-06-11 何少敦 一种控绳器
FR3000898B1 (fr) * 2013-01-16 2015-06-26 Zedel Appareil de securite sur corde a voyant indicateur de l'etat indicateur de l'etat de fermeture des flasques
CN103100195B (zh) * 2013-01-31 2014-12-10 陈佩 一种绳索攀登器
EP2777773A3 (de) * 2013-03-14 2017-01-25 Black Diamond Equipment AG Bremssysteme für das assistierte Abseilen mit einem Nocken-Kupplungsmechanismus
GB2522179B (en) * 2013-11-14 2019-02-13 Int Safety Components Ltd Improvements in and relating to rope descenders
US9707433B1 (en) * 2014-10-27 2017-07-18 Steven Paul McGibbons Exercise handles and band
US10173081B2 (en) 2015-02-17 2019-01-08 Boris Rogelja Descender
JP6056113B1 (ja) * 2016-03-09 2017-01-11 有限会社ケンテックシステムズ 登高器
US10327434B1 (en) 2016-05-20 2019-06-25 John L. Jarrell Remotely operable latch for a pulley-type endless halyard
US10569138B2 (en) * 2016-10-19 2020-02-25 Harken, Incorporated Ascender device and method of use
US11065477B2 (en) * 2016-12-16 2021-07-20 3M Innovative Properties Company Fall-protection apparatus with braking system
US10213628B1 (en) 2017-04-17 2019-02-26 The United States Of America As Represented By The Secretary Of The Air Force Belay braking system
US10864387B2 (en) * 2017-04-19 2020-12-15 Auburn University Tactical rope insertion assist device
US10207130B2 (en) 2017-04-24 2019-02-19 United States Of America As Represented By The Secretary Of The Air Force Fast rope insertion system
US11065482B2 (en) 2017-04-27 2021-07-20 United States Of America As Represented By The Secretary Of The Air Force Tip resistant system with quick disconnect
WO2019227108A1 (en) * 2018-05-24 2019-11-28 Du Toit Johan Paul A descender
US12017895B2 (en) * 2020-07-16 2024-06-25 Merritt Arboreal Design, Inc. Load support device and system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2422587A1 (fr) * 1978-04-11 1979-11-09 Motte Denis Descendeur-bloqueur de corde
FR2554102A1 (fr) * 1983-10-27 1985-05-03 Petzl Fernand Dispositif autobloquant mixte de descente et de remontee le long d'une corde verticale
EP0398819A1 (de) * 1989-05-19 1990-11-22 Petzl Sa Selbstbremsende Seilsicherheitsvorrichtung

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2451752A1 (fr) * 1979-03-23 1980-10-17 Petzl Paul Dispositif descendeur autobloquant perfectionne
ATE62139T1 (de) * 1987-08-12 1991-04-15 Boris Rogelja Abseilgeraet.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2422587A1 (fr) * 1978-04-11 1979-11-09 Motte Denis Descendeur-bloqueur de corde
FR2554102A1 (fr) * 1983-10-27 1985-05-03 Petzl Fernand Dispositif autobloquant mixte de descente et de remontee le long d'une corde verticale
EP0398819A1 (de) * 1989-05-19 1990-11-22 Petzl Sa Selbstbremsende Seilsicherheitsvorrichtung

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0688581A1 (de) * 1994-06-23 1995-12-27 Zedel Entkuppelbares selbstblockierendes Abseilgerät
FR2721522A1 (fr) * 1994-06-23 1995-12-29 Zedel Descendeur débrayable à autoblocage de la corde.
FR2721523A1 (fr) * 1994-06-23 1995-12-29 Zedel Descendeur à verrouillage de la poulie pour le blocage permanent de la corde.
US5577576A (en) * 1994-06-23 1996-11-26 Zedel Disengageable descender with self-locking of the rope
CN103619422A (zh) * 2011-05-18 2014-03-05 普罗帝克保护技术有限公司 具有防恐慌功能的自制动下降器
CN103619422B (zh) * 2011-05-18 2016-05-11 普罗帝克保护技术有限公司 具有防恐慌功能的自制动下降器
WO2013166846A1 (zh) * 2012-05-10 2013-11-14 He Shaodun 一种悬吊器
CN102716554A (zh) * 2012-06-05 2012-10-10 何少敦 一种悬吊器
CN102716554B (zh) * 2012-06-05 2015-07-22 何少敦 一种悬吊器

Also Published As

Publication number Publication date
KR940008710A (ko) 1994-05-16
US5360083A (en) 1994-11-01
FR2696647B1 (fr) 1994-11-25
EP0593369B1 (de) 1996-12-18
JPH07551A (ja) 1995-01-06
DE69306727T2 (de) 1997-07-17
JP3231513B2 (ja) 2001-11-26
FR2696647A1 (fr) 1994-04-15
ES2096897T3 (es) 1997-03-16
DE69306727D1 (de) 1997-01-30

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