WO2001083356A1 - Transporteur elevateur a fourche entre longerons a hauteurs programmables - Google Patents

Transporteur elevateur a fourche entre longerons a hauteurs programmables Download PDF

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Publication number
WO2001083356A1
WO2001083356A1 PCT/US2001/014313 US0114313W WO0183356A1 WO 2001083356 A1 WO2001083356 A1 WO 2001083356A1 US 0114313 W US0114313 W US 0114313W WO 0183356 A1 WO0183356 A1 WO 0183356A1
Authority
WO
WIPO (PCT)
Prior art keywords
lift
transport
drive means
base
legs
Prior art date
Application number
PCT/US2001/014313
Other languages
English (en)
Inventor
Earl L. Hagman
Original Assignee
Hagman Earl L
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 Hagman Earl L filed Critical Hagman Earl L
Priority to US10/275,443 priority Critical patent/US20030205433A1/en
Priority to EP01932953A priority patent/EP1423328A4/fr
Publication of WO2001083356A1 publication Critical patent/WO2001083356A1/fr
Priority to US11/985,422 priority patent/US20080067005A1/en

Links

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
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075—Constructional features or details
    • B66F9/0755—Position control; Position detectors
    • 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
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075—Constructional features or details
    • B66F9/07513—Details concerning the chassis
    • B66F9/07522—Variable length or width chassis
    • 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
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075—Constructional features or details
    • B66F9/07581—Remote controls
    • 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
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075—Constructional features or details
    • B66F9/20—Means for actuating or controlling masts, platforms, or forks

Definitions

  • the invention herein relates to a variable-straddle transporter with power lift, the distance between the legs of the transporter being adjustable, and the power lift including programmed sequences of one or more predetermined height positions.
  • Transporters with power lifts are known and are also referred to as "transport lifts" herein. They generally comprise a base having spaced-apart legs, supported on wheels permitting the transport lift to be rolled throughout a work area.
  • One or more lift columns extend generally vertically from the base, and mount and enclose a chain or screw lift drive.
  • An end effectuator is attached to the lift drive, and the end effectuator may have a variety of configurations adapting it to engage, lift, and/or manipulate various load pieces.
  • Prior transport lifts have also been tedious and time consuming to use in placing or retrieving the lifted and transported load with respect to a shelf or other desired location.
  • the typical sequence is to move the transport lift close to the destination, operate the lift drive to elevate the load above the desired location, then move the transport lift to position the load over the desired location, lower the load to rest at the desired location, and disengage the end effectuator.
  • This sequence may consume considerable time in placing the load at its destination.
  • the end effectuator must be raised to the correct height for engaging the load, and many fine adjustments may be required to establish a height position for properly engaging the load.
  • a transport lift having a base and a lift column extending generally vertically from the base.
  • Lift drive means extend along the lift column, including an end effectuator adapted for engaging a load.
  • the end effectuator may also be capable of manipulating the load, if desired.
  • Two spaced-apart legs are mounted to the base, each leg mounting a wheel adjacent its forward distal end, with the lift column and end effectuator positioned generally between the two spaced-apart legs. At least one of the two spaced-apart legs is slidably mounted on the base for movement away from and toward the other leg, providing variable straddle spacing between the legs.
  • both legs are slidably mounted to the base, and are power driven toward and away from each other to adjust the straddle of the legs.
  • the base mounts additional wheels rearwardly of the lift column and legs, to support the base and lift column and adapt the transport lift for rolling movement, which may be hand propelled.
  • the transport lift has a base supported on wheels for rolling movement.
  • a lift column extends vertically from the base.
  • Lift drive means extends along the lift column, including an end effectuator adapted for engaging and/or manipulating a load.
  • the lift drive means further includes programmable controller means for positioning the end effectuator at one or more predetermined height positions on the lift column.
  • the lift drive means is a motor driven screw drive, and includes a counter providing input to the programmable controller means indicative of the height position of the end effectuator.
  • the programmable controller means further includes a memory for storing data establishing a plurality of predetermined height positions of the end effectuator on the lift column, and a control panel for entering and recalling preprogrammed positions of the end effectuator on the lift column.
  • the control panel is preferably a hand-held control pendant and connected for use a short distance from the lift column, to better observe its position and function, with buttons to operate the transport lift and its controller.
  • the programmable controller means performs a sequence of programmed height positions of the end effectuator, incrementally in the order of programmed steps.
  • the transporter lift is also operable in a manual mode.
  • FIG. 1 is a perspective view of a transport lift according to the invention herein;
  • FIG. 2 is a top view of the transport lift of FIG. 1, with the legs adjusted to their narrow straddle position
  • FIG. 3 is a top view of the transport lift of FIG. 1, with the legs adjusted to their wide straddle position;
  • FIG. 4 is a front view, partially cut away, of the transport lift of FIG. 1;
  • FIG. 5 is a bottom view, partially cut away, of the transport lift of FIG. 1;
  • FIG. 6 is another perspective view of the transport lift of FIG. 1;
  • FIG. 7 is a perspective view, partially cut away, of the lift column of the transport lift of FIG. 1, with an alternative end effectuator;
  • FIG. 8 is a perspective view, partially cut away, of the lift column of the transport lift of FIG. 1, with another alternative end effectuator;
  • FIG. 9 is a perspective view, partially cut away, of the lift column of the transport lift of FIG. 1, with another alternative end effectuator;
  • FIG. 10 is a schematic diagram of a programmable controller, control pendant, motor and counter of the transport lift of FIG. 1;
  • FIG. 11 is a schematic diagram, comprised of FIG. 11A and 11B assembled as shown, of the operator interaction with the transport lift of FIG. 1, for programming and operating the transport lift.
  • a transport lift 10 generally comprises a base 12 and a lift column 14 extending generally vertically from the base 12.
  • the lift column 14 includes lift drive means generally indicated at 16, for raising and lowering an end effectuator 18 adapted to engage a load.
  • the end effectuator 18 has two spread-apart lift- bars 18a and 18b which can be positioned under a pallet.
  • a plurality of configurations of end effectuators 20, 21 and 22 are illustrated in FIGS. 7, 8, and 9, respectively, for engaging and manipulating variously configured loads 23, 24 and 25.
  • end effectuator 20 is C-shaped, for engaging the lip of a bucket or drum 23.
  • FIG. 8 shows end effectuator 21 in the form of a rod, for insertion in the mandrel of a roll 24.
  • end effectuator 22 is a platform with a turntable supporting load 25, so that the load may be swivelled.
  • the transport lift 10 is adapted for rolling movement throughout a plant or other work area by legs 30 and 32 extending forwardly of the base 12, the legs 30 and 32 respectively provided with wheels 34 and 36 at their forward distal ends.
  • the base 12 is further supported on wheels 38 and 40, positioned rearwardly of the lift column 14 and mounted on vertical axles so that they may turn to provide directional maneuverability of the transport lift 10.
  • a handle 42 position adjustable for height and tilt, is mounted to the lift column 14 and provides an operator with a suitable convenient grip for positioning and hand propelling the transport lift 10.
  • the end effectuator 18 is driven up and down the lift column 14 by the lift drive means 16.
  • the end effectuator 18 can be positioned adjacent the floor in its lowermost position to pick up a load, and may lift the load to an elevated position adjacent the lift column 14, as further discussed below.
  • the legs 30 and 32 are laterally slidably mounted on the base 12, providing for a variable straddle T of the transporter 10.
  • the base 12 includes a first plurality of bearings 44 which slidingly receive shafts 46 and 48, to which leg 30 is mounted.
  • leg 32 is mounted on two shafts 50 and 52, which are slidingly received in a plurality of bearings 54.
  • Shafts 46 and 48 are connected by a drive bar 56, and the shafts 50 and 52 are also connected by a drive bar 58.
  • Drive bars 56 and 58 are engaged by a threaded drive shaft 60 which is powered by a reversible leg straddle drive motor 62 through a drive linkage generally indicated at 64.
  • a battery provides power for the motor 62 and other electrical components of the transport lift 10.
  • the motor 62 may be operated to move the legs 30 and 32 toward each other, to an inward position where the transport lift 10 has its narrowest straddle or track, namely track T N .
  • this narrow straddle is preferably about 22 inches, which adapts the transport lift 10 for passage through narrow aisles and doorways.
  • the drive motor may be operated to move the legs 30 and 32 away from each other, establishing a maximum width straddle or track T w which, in the embodiment shown, is preferably about 37 inches.
  • the wider straddle T w accommodates wider and higher loads, such as pallets, between the legs 30 and 32 for pick up by the end effectuator 18. Additionally, the wider straddle T w provides additional stability and may be used during rolling transport except when a narrower straddle is required for clearance in tight spaces .
  • the transport lift 10 is generally utilized to lift and place a load at an elevated location, or to remove a load from an elevated location and place it on a floor or other lower surface, or otherwise transport and height- position a load.
  • the lift column 14 provides support for the load, and the lift drive means 16 is used to lift the load.
  • the lift drive means 16 includes a threaded drive screw 70 mounted in a lift column housing 72, the housing 72 defining a slot 74.
  • a mounting carriage 76 is threadably engaged on the drive screw 70 and accordingly moves up and down in response to rotation of the drive screw 70.
  • the mounting carriage 76 provides for mounting a variety of end effectuators, such as the end effectuator 18 or the end effectuators 20, 21 and 22 shown in FIGS. 7, 8 and 9 and discussed above.
  • a chain drive system may be used instead of a screw drive .
  • the base 12 mounts a screw drive motor 78 that powers a gear box 80, which transmits power from the motor to the drive screw 70.
  • a brake 82 is provided between the gear box and the drive screw, and operates to lock the drive screw 70 when the motor 78 is not in operation, so that a heavy load does not act to reverse the drive screw and thereby lower the load from its intended position.
  • the transport lift 10 will perform repetitive lifting functions. For example, it may be used to remove a load from a delivery area and to position it on a shelf in a storage area where the height of the shelf is a constant. In such movements, it may be desired to move the load to an intermediate height during transport .
  • the transport lift may also be used to remove a load from a storage area at a first height and place the load in a work area at a second height, again with the possibility of an intermediate height during transit between areas.
  • the transport lift 10 includes a programmable controller 90 having a control panel provided on a handheld control pendant 9 , the control pendant 92 being utilized to operate the variable straddle legs 30, 32, to manually operate the lift drive means 16, to program height position steps in the controller, and to perform those steps.
  • the controller 90 is mounted on base 12 and the control pendant 92 is removably mounted on the handle 42, being connected to the controller by cord 93.
  • the pendant 92 is shown removed and spaced from the handle, which permits the operator to better see the load and destination as the operator makes height adjustments.
  • the control pendant has a display 96, which is alternatively mounted on the handle 42 or other convenient location.
  • the control pendant 92 and controller 90 also provide a means for storing in memory certain height positions of the lift drive means 16 and then repeatably positioning the lift drive means at those height positions without manual adjustment.
  • the height positions are determined by a counter 94 which counts the rotations of the motor 78 or drive screw 70 driven thereby, the drive screw 70 being positively connected to the mounting carriage 76 and end effectuator 18.
  • the operator can implement one of the height positions by means of the controller and activate the lift drive means 16 to elevate the load to the desired height position while the transport lift 10 is in transit and approaching the location.
  • the height positions of the lift drive means are performed as sequential steps, so that the user can make the next height adjustment by depressing a single button on the control pendant 92. Provision is made for programming by means of the control pendant 92.
  • the programmable controller 90 is connected to operate the motor 78 of the lift drive means 16, and the motor drives the counter 94 with the drive screw 70 in order to provide feedback to the controller as to the number of turns of the drive screw 70 of the lift drive means 16.
  • The provides the programmable controller with sufficient information to ascertain the height of the end effectuator of lift drive means 16.
  • FIG. 10 also illustrates the control pendant 92, which is provided with a display screen 96, which may also be mounted on the handle 42 or lift column, and four control buttons; namely, an "up” button 100, a “down” button 102, an "out” button 104 and an “in” button 106.
  • the programmable controller 90 operates in one of three modes; namely, a Manual mode, in which the height of the lift mechanism and the straddle of the legs 30 and 32 are determined directly by the four control buttons 100, 102, 104 and 106; a Make/Edit program mode, in which numbered sequential steps each consisting of an adjusted height position of the lift drive means are established; and a Run mode, in which the programmable controller sequentially performs the steps of predetermined height adjustments.
  • FIG. 11 is a schematic diagram showing how the control panel pendant 92 is utilized to operate the transport lift 10 in the Manual mode, to store a sequence of selected position in the Make/Edit program mode, and to operate the transport lift in the Run mode.
  • the controller 90 is pre-programmed to carry out the functions described below.
  • control pendant 92 is shown at A in a start condition, wherein "start” may be displayed on the screen 96. Simultaneously depressing the "out” button 104, as indicated at 110, and the “in” button 106, as indicated at 112, for a short period of time, which may be approximately 3 seconds, causes the controller 90 to enter a "Select Mode" condition illustrated at B of FIG. 11.
  • buttons on the control pendant 92 have the following functions :
  • Up button 100 The motor 78 is operated for the period of time the up button 100 is depressed, as indicated at 116, with the motor elevating the mounting carriage 76 and end effectuator 18. The motor stops when the button 100 is released or when the mounting carriage reaches its full extent of travel;
  • Out button 102 The motor 62 operates while the out button 102 is depressed, as indicated at 120, to increase the straddle between legs 30 and 32, until the button 102 is released or until the maximum straddle is achieved; and In button 104 - The motor 62 operates while the in button 106 is depressed, as indicated at 122, to decrease the straddle of the legs 30, 32, until the in button 104 is released or until the minimum straddle is achieved.
  • the Mode Select display will scroll forward to the next mode, which is the Make/Edit mode illustrated as condition D. If the operator wishes to make or edit the program, the operator presses the up button 100 as indicated at 126 causing the controller 90 and control pendant 92 to select Make/Edit and enter the condition illustrated at E of FIG. 11.
  • depressing the down button 102 would lower the mounting carriage 76 and end effectuator 18 to a desired adjusted height position.
  • the controller 90 and control pendent 92 advance to the condition F, next illustrated in FIG. 11.
  • condition F the selected height position is displayed for program step 1. If the operator is not satisfied with the height position, the operator presses the down button 102, as indicated at 130, which returns the controller 90 and control pendant 92 to condition E, so that the height position can be reselected in the same manner described above. However, if the operator is satisfied with the adjusted height position, the operator presses the up button 100, as indicated at 132 to select the height position and the controller and pendant progress to condition G.
  • condition G the step number and adjusted height position are again displayed on the panel 96, together with a prompt "save?".
  • the operator has the choice of pressing the down button 102, as indicated at 134, which cancels the adjusted height position and returns the controller to condition E for re-entering the program step, or depressing the up button 100, as indicated at 136, which saves the height position and advances the controller and control pendant to the condition H, where the step number and height position are displayed.
  • the operator will generally scroll forward to program step 2 beginning with condition I.
  • the scroll forward is achieved by pressing out button 104, as indicated at 138.
  • the operator may also exit the Make/Edit mode by simultaneously depressing out button 104 and in button 106.
  • Condition I of the controller and control pendant is similar to the of condition E, except that condition I is utilized for setting the adjusted height position for the next step in he program sequence.
  • the adjusted height position for the step 2 of the program sequence is created in the positions I, J, K and L, in the same way that the height position for step 1 of the program was created in positions E, F, G and H described above.
  • the controller and control pendant enter the condition L of FIG. 11.
  • the operator has three options. First, the operator can press the out button 104, as indicated at 140, and the controller and control pendant will scroll forward, or advance, to a condition like those illustrated at E and I for programming step 3 in the program sequence. This choice can be repeated after each step until all steps are programmed. Second, the operator can press the in button 106, as indicated at 142, and the controller 90 and control pendant 92 will sequentially scroll back through previous program steps for possible alteration thereof. Third, the operator can simultaneously depress the out button 104 and the in button 106, as indicated at 144 and 146, causing the controller and control pendant to re-enter the Select Mode condition illustrated at M.
  • Condition M differs from Select Mode condition B in that Make/Edit the select position, and unless the operator desires to re-enter the Make/Edit mode, the operator would press the out button 104, as indicated at 148, to scroll the menu forward and place Run in the upper or selection position, as indicated at condition N. The operator may then press the up button 100, as indicated at 150, to place the controller and control pendant in the Run mode, illustrated as condition 0.
  • the operator presses the up button 100, as indicated at 152, and the controller will operate the motor 78 to place the mounting carriage 76 and end effectuator 18 in the height position set in program step 1.
  • the controller operates the motor 78 to place the mounting carriage 76 and end effectuator 18 in the height position established as step 2.
  • Sequential pressing of the up button 100 causes the controller to sequentially execute height positions of the numbered steps established in the Make/Edit mode, recycling to step 1 after the final step has been accomplished. Therefore, the operator may establish a sequence of desired height positions of the end effectuator, and then perform the selected height positions by placing controller in the Run mode and sequentially depressing the up button 100.
  • the mounting carriage and end effectuator attached thereto automatically go directly to the desired adjusted height position, without any fine tuning by the operator, permitting the operator to place and retrieve loads in a highly efficient and simple manner.
  • the operator can enter the Make/Edit mode when the transport lift is at the location where a change is needed.
  • the current program step will appear on the display screen, and the height position for that step can be re-established as desired.
  • the operator may then return to the Run mode, or can scroll to another program step for adjustment before returning to the Run mode .
  • Run mode and the Manual mode are independently available, with the Manual mode being more useful for jobs without an established sequence.
  • the straddle of the legs is controlled by the operator independently of the program, based on the operator's judgement as the operator propels the transport lift through the work area.

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Handcart (AREA)

Abstract

L'invention concerne un transporteur élévateur (10) comprenant une base (12) et deux longerons (30,32) espacés montés de manière coulissante sur la base de manière à pouvoir se rapprocher et s'éloigner l'un de l'autre. La base et les longerons sont montés sur des roues (34,36,38) permettant le déplacement du transporteur. Des moyens (62) d'entraînement à moteur pour les longerons permettent de déplacer les deux longerons de manière à les rapprocher ou à les éloigner l'un de l'autre, afin de régler l'écartement entre les longerons. Une colonne (14) de levage s'élève dans une direction sensiblement verticale à partir de la base. Des moyens (16) d'entraînement du système de levage sont associés à cette colonne et permettent de déplacer un organe (18) effecteur le long de la colonne de levage, cet organe effecteur étant conçu pour entrer en contact avec une charge. Un contrôleur (90) programmable commande les moyens d'entraînement du système de levage afin de positionner l'organe effecteur à au moins une hauteur prédéterminée sur la colonne de levage. Le contrôleur est conçu pour mémoriser une pluralité de réglages en hauteur sous forme d'avances séquentielles, et il commande les moyens d'entraînement du système de levage de manière à placer séquentiellement l'organe effecteur dans les positions prédéterminées en hauteur.
PCT/US2001/014313 2000-05-03 2001-05-03 Transporteur elevateur a fourche entre longerons a hauteurs programmables WO2001083356A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US10/275,443 US20030205433A1 (en) 2001-05-03 2001-05-03 Variable straddle transporter lift with programmable height positions
EP01932953A EP1423328A4 (fr) 2000-05-03 2001-05-03 Transporteur elevateur a fourche entre longerons a hauteurs programmables
US11/985,422 US20080067005A1 (en) 2000-05-03 2007-11-14 Variable straddle transporter lift with programmable height positions

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US20146800P 2000-05-03 2000-05-03
US60/201,468 2000-05-03

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US11/985,422 Division US20080067005A1 (en) 2000-05-03 2007-11-14 Variable straddle transporter lift with programmable height positions

Publications (1)

Publication Number Publication Date
WO2001083356A1 true WO2001083356A1 (fr) 2001-11-08

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ID=22745936

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/014313 WO2001083356A1 (fr) 2000-05-03 2001-05-03 Transporteur elevateur a fourche entre longerons a hauteurs programmables

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Country Link
EP (1) EP1423328A4 (fr)
WO (1) WO2001083356A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2799388A1 (fr) * 2013-04-30 2014-11-05 STILL GmbH Chariot de manutention doté d'un dispositif de levage
WO2024162852A1 (fr) * 2023-02-03 2024-08-08 Stertil B.V. Colonne de levage pour lever un véhicule ayant un soutien au sol, système de levage avec une telle colonne de levage et procédé associé pour lever un véhicule

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US3529736A (en) * 1968-01-02 1970-09-22 Lebre Charles J P Devices for raising loads to permit the handling thereof
GB1206319A (en) * 1967-03-15 1970-09-23 Bygg Och Transportekonomie Ab Improvements relating to fork lift trucks
US4074794A (en) * 1975-10-31 1978-02-21 Towmotor Corporation Height indicator and control for fork lift trucks
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US4517645A (en) * 1981-03-31 1985-05-14 Kabushiki Kaisha Toyoda Jidoh Shokki Seisakusho Control device for loading and unloading mechanism
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US4526504A (en) * 1983-06-23 1985-07-02 Hovey Gordon E Push-pull de-tiering system
US4571139A (en) * 1981-08-24 1986-02-18 Superior Handling Equipment, Inc. Self-propelled freight handling truck
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US5236065A (en) * 1991-04-18 1993-08-17 Sugiyasu Industries Co., Ltd. Lift used for maintenance of vehicles
US5749696A (en) * 1992-07-23 1998-05-12 Scott Westlake Height and tilt indicator for forklift truck

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US2899093A (en) * 1959-08-11 morrell
DE1252588B (fr) * 1967-10-19
GB1206319A (en) * 1967-03-15 1970-09-23 Bygg Och Transportekonomie Ab Improvements relating to fork lift trucks
US3529736A (en) * 1968-01-02 1970-09-22 Lebre Charles J P Devices for raising loads to permit the handling thereof
US4074794A (en) * 1975-10-31 1978-02-21 Towmotor Corporation Height indicator and control for fork lift trucks
US4517645A (en) * 1981-03-31 1985-05-14 Kabushiki Kaisha Toyoda Jidoh Shokki Seisakusho Control device for loading and unloading mechanism
US4520443A (en) * 1981-03-31 1985-05-28 Kabushiki Kaisha Toyoda Jidoh Shokki Seisakusho Control device for loading and unloading mechanism
US4427094A (en) * 1981-07-10 1984-01-24 Winkelblech Dean R Portable elevator device
US4571139A (en) * 1981-08-24 1986-02-18 Superior Handling Equipment, Inc. Self-propelled freight handling truck
US4526504A (en) * 1983-06-23 1985-07-02 Hovey Gordon E Push-pull de-tiering system
US5011358A (en) * 1988-10-25 1991-04-30 Andersen Eric T Height indicator for a fork lift truck
US5236065A (en) * 1991-04-18 1993-08-17 Sugiyasu Industries Co., Ltd. Lift used for maintenance of vehicles
US5174415A (en) * 1991-12-16 1992-12-29 Teledyne Princeton, Inc. Walk behind fork lift truck
US5749696A (en) * 1992-07-23 1998-05-12 Scott Westlake Height and tilt indicator for forklift truck

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Title
See also references of EP1423328A4 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2799388A1 (fr) * 2013-04-30 2014-11-05 STILL GmbH Chariot de manutention doté d'un dispositif de levage
WO2024162852A1 (fr) * 2023-02-03 2024-08-08 Stertil B.V. Colonne de levage pour lever un véhicule ayant un soutien au sol, système de levage avec une telle colonne de levage et procédé associé pour lever un véhicule

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EP1423328A1 (fr) 2004-06-02
EP1423328A4 (fr) 2006-12-13

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