EP0484285A1 - Rocking lever for opening manhole covers - Google Patents

Rocking lever for opening manhole covers Download PDF

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Publication number
EP0484285A1
EP0484285A1 EP91830414A EP91830414A EP0484285A1 EP 0484285 A1 EP0484285 A1 EP 0484285A1 EP 91830414 A EP91830414 A EP 91830414A EP 91830414 A EP91830414 A EP 91830414A EP 0484285 A1 EP0484285 A1 EP 0484285A1
Authority
EP
European Patent Office
Prior art keywords
arm
rocking lever
primary arm
lever according
rocking
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Withdrawn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
EP91830414A
Other languages
German (de)
English (en)
French (fr)
Inventor
Ferruccio Montalbetti
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 EP0484285A1 publication Critical patent/EP0484285A1/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F19/00—Hoisting, lifting, hauling or pushing, not otherwise provided for
    • B66F19/005—Lifting devices for manhole covers

Definitions

  • this invention relates to a lever which has been suitably designed so that it allows each kind of manhole cover to be opened in an extremely easy way and with a minimum effort.
  • a device like that which is proposed in this invention obviates all safety problems as it allows the hardest manhole covers to be opened by a simple snap blow, even if such covers are blocked by the frost, without having recourse to further tricks.
  • a rocking lever for opening cover manholes which comprises a primary arm made up of an upper handle length which is substantially straight and of an upper bent length, the bend being at a position close to its connection with said upper length which is substantially straight at its lower end; a fulcrum arranged below said primary arm, about at the point corresponding to said bent zone; a secondary rocking arm which is coupled so as to be free of rocking at the lower end of the primary arm; and a hook which is carried by said secondary arm at a lower position.
  • the handle length of the primary arm is provided, substantially at an intermediate position, with an articulated joint for making it closable, said joint being in particular made up of a hinge which is realized by means of a pivot and knocker.
  • a toothed plate can be provided below said fulcrum in order to realize a rough support.
  • Said fulcrum will preferably be made up of a member which is substantially in th shape of a U.
  • a support member provided in its front position with a transverse tubular member can be provided in front of said rocking lever according to the present invention.
  • said rocking lever accordint to this invention comprises a primary arm 1 which is made up of a straight handle upper length 1′ and of a lower length 1 ⁇ which is slightly bent at the point corresponding to its connection with said handle length 1′ and then it is again straight at its opposite end.
  • the secondary arm 5 ends in a hook 7 which can be made up of any one of the hooks 7 shown in the Figures 10a-10e, or with hooks of a suitable shape according to the needs in question.
  • the kind of embodiment shown in the Figures 3 and 4 provides a length 1 ⁇ which is elongated in its straight zone so as to give the possibility of providing two holes 8 for inserting the pivot 6 which realizes the coupling of the secondary arm 5.
  • the hook 7 which is shown is that of Figure 10c.
  • the rocking lever shown in Figures 5 and 6 has a very short primary arm 1 so that such lever shows suitable for opening small manholes and, in addition it is not bulky so that this device can be carried within a bag.
  • the rocking lever of Figure 7 comprises a primary arm 5 provided with two holes 9 for allowing the pivot 6 that realizes the coupling with the primary arm 1 to pass, so that the height of the hook 7 can be adjusted.
  • the coupling between the scondary arm 5 and the primary arm 1 is obtained through the interposition of a third arm 10 and of a connection portion 11.
  • connection portion 11 is provided with a hole 12 which couples with a corresponding hole in the arm 10 and is rigidly fastened to the arm 1.
  • the arm 10 is provided with a second hole that couples with one of the holes 9 in the arm 5 by means of the pivot 6.
  • Figure 9 shows a support 13, whose arm 14 is provided at one of its ends with a cylindrical member 15 and at the opposite end, with two holes 16 which are to be coupled to the primary arm 1 and for supporting the secondary arm 5.
  • the support 13 allows the weight to be distributed between the lever and the cylindrical member 15 so as to allow heavier loads to be lifted, so giving the lever itself a higher stability and avoiding side oscillations.
  • the cylindrical member 15, running below the open cover of the manhole makes the operation of lifting the cover itself easier.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Lock And Its Accessories (AREA)
EP91830414A 1990-10-09 1991-10-07 Rocking lever for opening manhole covers Withdrawn EP0484285A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT5260490U 1990-10-09
IT5260490U IT223774Z2 (it) 1990-10-09 1990-10-09 Leva bilanciere apritombino.

Publications (1)

Publication Number Publication Date
EP0484285A1 true EP0484285A1 (en) 1992-05-06

Family

ID=11277320

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91830414A Withdrawn EP0484285A1 (en) 1990-10-09 1991-10-07 Rocking lever for opening manhole covers

Country Status (2)

Country Link
EP (1) EP0484285A1 (it)
IT (1) IT223774Z2 (it)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2272396A (en) * 1992-11-13 1994-05-18 Reginald William Brown Access cover lifter
DE29720965U1 (de) * 1997-11-26 1998-02-05 Augustin, Armin, Dipl.-Ing. (FH), 88422 Oggelshausen Hydrantenschachtdeckelheber
FR2825695A1 (fr) * 2001-06-08 2002-12-13 Alain Navelier Outil de soulevement et de manutention de plaques de voirie
US7114233B1 (en) * 2003-10-17 2006-10-03 Honda Motor Co., Ltd. Engine cover puller
GB2456629A (en) * 2008-01-17 2009-07-22 Dudley Thomas Ltd A lifting device with a foldable handle
DE102009006836A1 (de) * 2009-01-30 2010-08-05 Haacon Hebetechnik Gmbh Wartungssystem für Unterflurhydranten
GB2475673A (en) * 2009-10-14 2011-06-01 James Riley Trough lid lifter
WO2012076806A1 (fr) 2010-12-06 2012-06-14 Eurosign Outil de maniement d'une plaque d'egout
CN115231488A (zh) * 2022-07-06 2022-10-25 广西电网有限责任公司贵港供电局 一种电缆井盖板提升支架及其调平提升方法
US20230135299A1 (en) * 2021-11-02 2023-05-04 PolyTex Concrete LLC Fulcrum Pry Bar

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3198362A (en) * 1962-10-12 1965-08-03 Harold I Berg Lifting tool
US3985338A (en) * 1975-11-17 1976-10-12 Herrmann Edgar R Manhole cover lifter
DE2646646A1 (de) * 1976-10-15 1978-04-20 Erhard Beck Vorrichtung zum ausheben und einsetzen von kanaldeckeln oder dergleichen
FR2427996A1 (fr) * 1978-06-06 1980-01-04 Serpollet Entr J Chariot de levage et de manutention pour trappes de fermeture de regards de chaussee
GB2101558A (en) * 1981-06-19 1983-01-19 Alan Gair Mobile lifting device
FR2530606A1 (fr) * 1982-07-26 1984-01-27 Du Pin Cellulose Outil pour extraire des cales et cales adaptees
GB2136363A (en) * 1983-03-16 1984-09-19 Petroleum Equipment Trading Co Trolley
US4488706A (en) * 1982-04-01 1984-12-18 Kazuhiko Kono Manhole cover lifting hook
US4662607A (en) * 1984-12-07 1987-05-05 Mochizuki Motor Co. Ltd. Apparatus for operating manhole cover

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3198362A (en) * 1962-10-12 1965-08-03 Harold I Berg Lifting tool
US3985338A (en) * 1975-11-17 1976-10-12 Herrmann Edgar R Manhole cover lifter
DE2646646A1 (de) * 1976-10-15 1978-04-20 Erhard Beck Vorrichtung zum ausheben und einsetzen von kanaldeckeln oder dergleichen
FR2427996A1 (fr) * 1978-06-06 1980-01-04 Serpollet Entr J Chariot de levage et de manutention pour trappes de fermeture de regards de chaussee
GB2101558A (en) * 1981-06-19 1983-01-19 Alan Gair Mobile lifting device
US4488706A (en) * 1982-04-01 1984-12-18 Kazuhiko Kono Manhole cover lifting hook
FR2530606A1 (fr) * 1982-07-26 1984-01-27 Du Pin Cellulose Outil pour extraire des cales et cales adaptees
GB2136363A (en) * 1983-03-16 1984-09-19 Petroleum Equipment Trading Co Trolley
US4662607A (en) * 1984-12-07 1987-05-05 Mochizuki Motor Co. Ltd. Apparatus for operating manhole cover

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2272396A (en) * 1992-11-13 1994-05-18 Reginald William Brown Access cover lifter
GB2272396B (en) * 1992-11-13 1996-03-13 Reginald William Brown Access cover lifter
DE29720965U1 (de) * 1997-11-26 1998-02-05 Augustin, Armin, Dipl.-Ing. (FH), 88422 Oggelshausen Hydrantenschachtdeckelheber
FR2825695A1 (fr) * 2001-06-08 2002-12-13 Alain Navelier Outil de soulevement et de manutention de plaques de voirie
US7114233B1 (en) * 2003-10-17 2006-10-03 Honda Motor Co., Ltd. Engine cover puller
GB2456629A (en) * 2008-01-17 2009-07-22 Dudley Thomas Ltd A lifting device with a foldable handle
DE102009006836A1 (de) * 2009-01-30 2010-08-05 Haacon Hebetechnik Gmbh Wartungssystem für Unterflurhydranten
GB2475673A (en) * 2009-10-14 2011-06-01 James Riley Trough lid lifter
WO2012076806A1 (fr) 2010-12-06 2012-06-14 Eurosign Outil de maniement d'une plaque d'egout
RU2608436C2 (ru) * 2010-12-06 2017-01-18 Юросайн Устройство для снятия и установки крышки канализационного коллектора
US9663340B2 (en) 2010-12-06 2017-05-30 Eurosign Tool for handling a sewer cover
US20230135299A1 (en) * 2021-11-02 2023-05-04 PolyTex Concrete LLC Fulcrum Pry Bar
US11964854B2 (en) * 2021-11-02 2024-04-23 PolyTex Concrete LLC Fulcrum pry bar
US12391528B2 (en) 2021-11-02 2025-08-19 PolyTex Concrete LLC Fulcrum pry bar
CN115231488A (zh) * 2022-07-06 2022-10-25 广西电网有限责任公司贵港供电局 一种电缆井盖板提升支架及其调平提升方法

Also Published As

Publication number Publication date
IT223774Z2 (it) 1995-07-26
IT9052604U1 (it) 1992-04-09
IT9052604V0 (it) 1990-10-09

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