USRE30021E - Material handling machine - Google Patents
Material handling machine Download PDFInfo
- Publication number
- USRE30021E USRE30021E US05/690,051 US69005176A USRE30021E US RE30021 E USRE30021 E US RE30021E US 69005176 A US69005176 A US 69005176A US RE30021 E USRE30021 E US RE30021E
- Authority
- US
- United States
- Prior art keywords
- plane
- boom
- vehicle
- load
- end portion
- 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.)
- Expired - Lifetime
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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
- 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
- B66F9/065—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 non-masted
- B66F9/0655—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 non-masted with a telescopic boom
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S414/00—Material or article handling
- Y10S414/125—Combined or convertible implements
Definitions
- This invention relates to self-propelled, material-handling vehicles, and more particularly relates to such vehicles which employ an extendible boom.
- One such prior art machine comprises a vehicle body mounted on wheelbearing front and rear axles.
- a cab for a driver is centrally located over the front axle, and a boom is rotatably mounted on a pivot axis located substantially over the rear axle and above the top of the cab so that the boom extends forward over the cab.
- a fork is attached to a support member that extends in front of the cab and is connected to the free end of the boom.
- An engine which powers the vehicle is located over the rear axle, and the major portion of the engine is located above the rear wheels.
- While such a vehicle is capable of lifting loads to a substantial height, the vehicle is relatively useless in an environment requiring small size and unimpaired visibility by the driver, such as a warehouse.
- the mounting of the boom above the cab creates a vehicle which is too high to go through many warehouse archways, and the support member extending in front of the cab impairs the vision of the driver.
- the vehicle has a relatively high center of gravity which increases the moment arm created around the front axle during deceleration of the vehicle, such as during braking.
- this moment arm tends to pitch the vehicle forward and to lift the rear wheels off the ground during braking.
- the problem is accentuated when the boom is extended to any substantial extent. As a result of this deficiency, the vehicle tends to be unstable when it is maneuvered with a heavy load.
- the vehicle provides no means for simultaneously carrying a load on the fork and a portion of the vehicle body.
- This deficiency limits the physical size of the load which can be safely carried by the vehicle.
- the vehicle also is not capable of maintaining a load at the same elevation above the ground level as the boom is extended and retracted. This deficiency limits the ability of the driver to conveniently maneuver a load.
- the position of the boom over the cab of the vehicle prevents the boom from extending into an excavation so that a load may be maneuvered below the grade level.
- the applicants have invented a unique and versatile vehicle having attributes of both an overhead construction crane and a fork lift truck capable of relatively high speed maneuverability in confined areas.
- the applicants are able to substantially reduce the center of gravity, thereby increasing the weight of a load which may be safely maneuvered by the vehicle during deceleration.
- applicants have been able to create a vehicle capable of maneuvering a load below grade level and of carrying a load close to the ground without impairing the vision of a driver operating the vehicle.
- the boom mounted on applicant's vehicle employs a unique extending and retracting mechanism which provides smooth and trouble-free operation at minimum cost.
- a fork is located on the front of the boom and means are provided for pivoting the fork so that a load can be simultaneously carried on the fork and on the load-carrying portion of the vehicle body.
- a drop block is simultaneously carried on the boom adjacent the fork so that a load can be handled by either the fork or the drop block, or both.
- the vehicle is provided with means for maintaining the drop block hook a constant height above the grade level as the boom is extended and retracted so that the maneuverability of a load held by the drop block is increased.
- a control system maintains the fork at the same relative attitude with respect to the ground as the boom is raised and lowered.
- FIG. 1 is a side elevational view of a preferred form of material-handling vehicle made in accordance with the present invention showing a rotatable boom thereof in a raised position in soid lines and in a lowered position in phantom lines;
- FIG. 2 is a front elevational view of the vehicle shown in FIG. 1 in which the top portion of the boom is broken away;
- FIG. 2A is a fragmentary, front elevational view of the apparatus of FIG. 2 illustrating the manner in which the sway cylinders maintain the vehicle in an upright position on an uneven grade surface;
- FIG. 3 is a top plan view of the vehicle shown in FIG. 1 in which the boom is lowered to a substantially horizontal position and in which a fork is shown in its forward position in solid lines and is shown in its side-pivoted position in phantom lines;
- FIG. 4 is an enlarged, cross-sectional, fragmentary view of the boom shown in FIG. 1 taken substantially along line 4--4 of FIG. 6;
- FIG. 5 is a cross-sectional view of the boom taken along line 5--5 of FIG. 6;
- FIG. 6 is a cross-sectional view of the boom taken along line 6--6 of FIG. 5;
- FIG. 7 is a cross-sectional view of the boom taken along line 7--7 of FIG. 5;
- FIG. 8 is a schematic drawing of the boom, a hoisting assembly for the boom, and a fork attitude control system which maintains the fork substantially horizontal to the grade level as the boom is raised and lowered;
- FIGS. 9-13 are pictorial views of the vehicle shown in FIG. 1 performing various material-handling operations.
- a preferred form of vehicle 12 embodying the present invention basically comprises a body 14, an axle and wheel assembly 60, a suspension assembly 110, a cab 124, a pivot assembly 150, a boom assembly 164, a boom extending assembly 206, a hoisting assembly 244, and a load-carrying assembly 250.
- body 14 comprises a load-carrying platform 16 having a flat, horizontal, upper surface 18.
- the underside of the vehicle is protected by a right-hand depending shield plate 19 attached to the underside of platform 16.
- the vehicle has a left front fender 20 and a left rear fender 22 that are joined by a platform 24 which forms the floor of cab 124 (FIG. 10).
- platform 24 supports an underslung housing 26 which carries an engine 28 under a well 26.
- the engine preferably comprises a 103 horsepower water-cooled internal combustion engine capable of propelling the vehicle up to about 20 miles per hour.
- a major portion of the engine is located below a plane drawn through the top points of the wheels. This is an important featue since it reduces the center of gravity of the vehicle. As a result, the vehicle is able to decelerate with a heavier load than would otherwise be possible.
- a one spot service compartment is located behind an access door 25 (FIG. 10). In the compartment are all of the daily maintenance check items like fuel, oil check and add, air cleaner, battery, hydraulic fluid level gauge, hydraulic tank, radiator fill and tool box.
- body 14 also comprises a front traverse frame member 34 and a corresponding rear traverse frame member (not shown).
- a depending counter weight 35 helps to balance the vehicle when the boom is extended. (FIGS. 1 and 12).
- a well 36 is defined by a horizontal flat plate member 38 and the upper portions of walls 30 and 32.
- the front part of the well is partially enclosed by a slanting front plate 40 and the rear of the well is partially enclosed by a left-hand rear member 46 and a right-hand rear member 48.
- Members 46 and 48 also cover the hoisting cylinders of hoisting assembly 244.
- the well is arranged to receive the boom when the boom is lowered into the position shown in phantom lines so that a load may be maneuvered below grade. This is an important feature since it enables loads positioned below grade level to be maneuvered with a fork or drop block.
- axle and wheel assembly 60 comprises a front axle 62 having a left end portion 64, a right end portion 66 and an axis of rotation 68.
- a front, left-hand wheel 70 is rotatably mounted to end portion 64 of axle 62.
- Wheel 70 has an outer periphery that defines a circle 72 having an upper point 74.
- a front, right-hand wheel 76 is rotatably mounted to end portion 66 of axle 62.
- the wheel has an outer periphery that defines a circle 78 having an upper point 80.
- Drum-type brakes 82 and 84 provide a means of braking wheels 70 and 76, respectively.
- Assembly 60 also comprises a split rear axle 86 having a left end portion 88, a right end portion 90, and an axis of rotation 92.
- a rear, left-hand wheel 93 is rotatably mounted to left end portion 88 of rear axle 86.
- the wheel has an outer periphery that defines a circle 94 having an upper point 95.
- a rear, right-hand wheel 96 is rotatably mounted to right end portion 90 of rear axle 86.
- the wheel has an outer periphery that defines a circle 97 having an upper point 98.
- Drum type brakes 100 and 102 provide a means of braking rear wheels 93 and 96, respectively.
- the axes of rotation 68 and 92 of the front and rear axles define a plane 104 that is substantially horizontal to the ground level G.
- Upper points 74, 80, 95 and 98 lie in a plane 105 that is substantially parallel to plane 104.
- the points of circles 94 and 97 closest to front axle 62 lie in a plane 103 that is perpendicular to planes 104 and 105.
- the wheels are driven by means of a front drive shaft 106, a rear drive shaft 107, and a transmission 108 that is coupled to engine 24. These components are arranged so that the vehicle has a 4-wheel drive capability.
- suspension assembly 110 comprises a front yoke 112 that is connected to front axle 62 and is rotatably mounted to frame member 34 by a pivot rod 114.
- Sway cylinders 116 and 118 are connected between yoke 112 and well member 38 so that load-carrying platform 16 remains substantially horizontal when the vehicle is used on rough terrain or when one of the front wheels must be operated in a depression in the ground.
- the manner in which the sway cylinders operate is shown in FIG. 2A.
- cab 124 comprises side frame members 126, 127, 128, 129 and roof frame members 132, 133, 134 and 135 welded together as shown.
- a steering wheel 138 having an outer periphery that defines a circle 140 having an upper point 142 is located within the cab. Point 142 lies in a plane 144 that is parallel to the planes 104 and 105.
- the steering wheel is connected by conventional hydraulic linkage to the rear wheels so that the load can be positioned with maximum maneuverability.
- pivot assembly 150 comprises a horizontal rod 152 that is journaled through brackets 154 and 156.
- the brackets are rigidly attached to the frame of the vehicle body beneath member 38 in the manner shown.
- the longitudinal axis of rod 152 defines a pivot axis 158 which lies in a plane 159 that is parallel to planes 104, 105 and 144.
- boom assembly 164 comprises a boom 166 that has a fixed section 168, a telescoping movable section 176 and another telescoping movable section 184.
- the boom assembly is rotatably mounted on rod 152.
- the rod is positioned relative to steering wheel 138 in the cab such that plane 159 lies between the plane 105 and plane 144. This is an important feature since it enables the boom to place a load below grade level and it also enables the driver to have substantially unobstructed vision when a load is carried adjacent the ground level as shown in FIGS. 10 and 13. Moreover, this placement of the rod maintains the center of gravity of the vehicle as low as possible commensurate with an ability to maneuver a load below grade level.
- fixed section 168 of the boom comprises walls 170, 171, 172 and 173; movable section 176 of the boom comprises walls 178, 179, 180 and 181; and movable section 184 of the boom comprises walls 186, 187, 188 and 189.
- the boom also has an inner sleeve 192 comprising walls 194, 195, 196 and 197. Section 184 terminates in a load carrying end 200 which is connected to an end support member 202. The support member is not shown in FIG. 4 so that other portions of the apparatus may be more clearly seen.
- boom 166 is rotatable in an operating plane 204 that is substantially perpendicular to planes 104, 105, 144 and 158. It should be noted that cab 124 is located completely on one side of plane 204, whereas load-carrying platform 16 is located entirely on the opposite side of plane 204. This is an important feature since it enables well 36 to be strategically placed below the boom to enable the maneuvering of a load below ground level as shown in FIG. 11. In addition, the foregoing arrangement of vehicle components enables the driver to have a substantially unobstructed view of the load irrespective of the manner in which the boom is moved in plane 204.
- boom extending assembly 206 comprises a hydraulic cylinder 208 having a rear end 210 that is attached to a rear wall 169 of boom 166.
- the cylinder is internally fitted with a reciprocating piston (not shown) that is attached to a connecting rod 212.
- the connecting rod terminates in a cylindrically-shaped head 214 that is connected to sleeve 192 by rods 216,217 that pass through walls 195 and 197, respectively.
- the foregoing components enable the sleeve to be moved by the extension and retraction of rod 212 within cylinder 208.
- the movement of the piston within cylinder 208 is controlled by conventional hydraulic fluid and valves not shown.
- sleeve 192 is connected to section 176 of the boom by means of a rod 220 which passes through walls 181 and 197.
- a collar 222 spaces walls 181 and 197 with respect to each other.
- Sleeve 192 is also connected to section 196 by means of a rod 224 that passes through walls 179 and 195.
- the rod is surrounded by a collar 226 that spaces walls 179 and 195 with respect to each other.
- a pulley 230 is rotatably attached to wall 181 of section 176 by a rod 232.
- a chain 234 is looped around pulley 230.
- One end of the chain is attached to rear wall 169 by a fixture 236 and the opposite end of the chain is attached to the rear end of section 184 by a fixture 238.
- a pulley 239 is rotatably attached to wall 179 of section 176 by a rod 240.
- a chain 241 is looped around pulley 239.
- One end of chain 241 is attached to the front end of section 168 by a fixture 242 and the opposite end of the chain is attached to wall 187 of section 184 by a fixture 243.
- the pulleys and chains cooperate in order to move section 184 inward and outward with respect to section 176.
- pulley 230 is also moved outward so that chain 234 pulls fixture 238 and section 184 outward.
- pulley 239 is moved inward so that chain 241 pulls fixture 243 and section 184 inward. This is an important feature since it enables both sections 176 and 184 to be simultaneously moved inward and outward by a simple and fool-proof mechanism.
- hoisting assembly 244 comprises hydraulic hoisting cylinder-piston members 245 and 246.
- Member 245 comprises a cylinder 245a that is fitted with an internal piston (not shown) connected to a piston rod 245b.
- member 246 comprises a cylinder 246a that is fitted with an internal piston (not shown) connected to a piston rod 246b.
- Cylinders 245a and 246a are connected to member 38 of well 36 by pins 247a and 247b in the manner shown in FIG. 2.
- Piston rods 245b and 246b are connected to a hoisting frame 248 by means of pins 249a and 249b, respectively.
- Hoisting frame 248 is welded to section 168 of the boom.
- the raising and lowering of the boom is controlled through cylinder-piston members 245 and 246 by conventional hydraulic control apparatus powered by engine 28.
- well 36 is made wide enough to accommodate a substantial portion of cylinder-piston members 245 and 246. By enabling these members to be located in the well, the center of gravity of the vehicle is lowered, thereby helping to stabilize the vehicle and increasing its effective load-carrying capacity.
- load-carrying assembly 250 comprises a drop block 251 that supports a hook 252.
- the operation of the drop block is controlled by a pulley 254 having an axis of rotation 256; a pulley 258 that is rotatably mounted on support member 202 by a rod 260; a pulley 262 that is rotatably connected to wall 180 by a rod 264; a slanted pulley 266 that is rotatably mounted to wall 172 by a rod 268; and a rotatable drum 270 having an axis of rotation 272 that is mounted to wall 172 by a bracket 274. (FIG. 1).
- the rotation of drum 270 is hydraulically controlled and can be operated by a driver from the cab.
- a cable 275 is looped around the drum and pulleys and is attached to support member 202 at a point 276.
- Rotation of drum 270 raises or lowers hook 252. If sections 176 and 184 of the boom are extended outward in the direction of arrow O, pulley 262 is moved outward so that the length of cable 175 between pulleys 258 and 254 is increased. In this manner, hook 252 is maintained substantially at the same elevation above the ground while the boom is extended. The reverse process takes place as the boom is retracted.
- load carrying assembly 250 also comprises a fork assembly 280.
- Assembly 280 includes a pivot frame 282 that is rotatable around a horizontal pivot rod 284.
- Frame 282 supports an upper collar 286 on a bracket 287 and a lower collar 288 on a bracket 289.
- the center lines of the collars define a vertical pivot axis 290.
- Assembly 280 also comprises a vertical frame 292 that supports upper brackets 293, 294 which comate with collar 286, and lower brackets 295, 296 which comate with collar 288.
- the brackets and collars are rotatably mounted together by means of locking pins (not shown).
- Ford members 302 and 304 are connected by support bar 308 that is rotatably mounted on frame 292. (FIG. 9).
- Frame 292 is rotated with respect to frame 282 by means of a hydraulic rotary actuator 310 that is remotely controlled by the driver from the cab.
- fork members 302 and 304 may be pivoted 90° with respect to their solid line position so that a load L can be simultaneously carried on the fork members and load-carrying platform 16.
- This unique feature is made possible, in part, by the arrangement of applicants' vehicle by which cab 124 and platform 16 are located on opposite sides of the boom.
- the fork can pivot in the direction of arrow P to position L shown in phantom in FIG. 3 in order to pick up skewed loads.
- a non-pivoting fork such as fork 292A (FIG. 10) could also be used if the advantages of pivoting are not desired.
- load-carrying assembly 250 also comprises a fork attitude control system 320.
- System 320 includes a tank of hydraulic fluid 322 and a tube 324 which connects the fluid to an operating valve 326.
- the operating valve is controlled by an operating handle 328.
- the hydraulic fluid is maintained under pressure by a pump 330 that is connected to valve 326 through a tube 332. Pressurized hydraulic fluid flows through tube 334 and through branch tubes 335 and 336.
- a master cylinder 340 is fitted with a piston 342 which divides the cylinder into an upper chamber 344 and a lower chamber 346.
- Piston 342 is connected to a piston rod 348 that is rotatably mounted to boom 166 through a pin 350.
- Cylinder 340 is likewise rotatably mounted on the frame of the vehicle by a pin 352.
- Upper chamber 344 is connected to tube 336 and lower chamber 346 is connected to a tube 354 that returns hydraulic fluid to valve 326 and also transmits the fluid to a branch tube 356.
- a slave cylinder 358 is fitted with a piston 360 that divides the cylinder into an upper chamber 362 and a lower chamber 364.
- the piston is connected to a piston rod 366 that is rotatably mounted to vertical frame 282 by a pin 368.
- Cylinder 358 is rotatably mounted to support member 202 by a pin 370.
- the control system operates as follows:
- piston 342 is raised so that hydraulic fluid flows through tube 336 to upper chamber 362 of slave cylinder 358.
- piston 360 moves toward pin 370 so that frame 282 moves in the direction of arrow D, thereby maintaining any load held on the fork members in a substantially horizontal plane.
- piston 342 in master cylinder 340 is moved downward so that the hydraulic fluid is transferred through tube 354 into lower chamber 364 of slave cylinder 358.
- Piston 360 then is moved toward pin 368 so that frame 282 is rotated in the direction of arrow C.
- Valve 326 and operating handle 328 are arranged so that the above-described operation of the master and slave cylinders can be overridden and so that the frame 282 can be manually rotated in the direction of either arrow C or arrow D.
- a vehicle made in accordance with the invention is capable of performing a variety of material-handling operation.
- a load can be lifted by drop block 251 while the fork is attached to the boom.
- This is an important feature because it permits either the drop block or the fork to be used without disassembling or assembling any components.
- FIG. 9 also illustrates configurations of well 36 and drum 270 that are somewhat different from the like components shown in the other figures.
- FIGS. 10 and 13 illustrate the unobstructed vision enjoyed by the driver as a load is being carried near ground level. This is an important feature when the vehicle is used in a warehouse or stock-piling yard.
- FIG. 11 illustrates the cooperation of boom 166, pivot assembly 150, and well 36 so that a load can be maneuvered below grade level G.
- FIG. 12 illustrates the height to which the boom is extendible for placing a load on top of a building.
Abstract
Description
Claims (14)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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US00362199A US3836025A (en) | 1973-05-21 | 1973-05-21 | Material-handling machine |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00362199A Reissue US3836025A (en) | 1973-05-21 | 1973-05-21 | Material-handling machine |
Publications (1)
Publication Number | Publication Date |
---|---|
USRE30021E true USRE30021E (en) | 1979-06-05 |
Family
ID=23425086
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00362199A Expired - Lifetime US3836025A (en) | 1973-05-21 | 1973-05-21 | Material-handling machine |
US05/690,051 Expired - Lifetime USRE30021E (en) | 1973-05-21 | 1976-05-26 | Material handling machine |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00362199A Expired - Lifetime US3836025A (en) | 1973-05-21 | 1973-05-21 | Material-handling machine |
Country Status (5)
Country | Link |
---|---|
US (2) | US3836025A (en) |
JP (1) | JPS5520993B2 (en) |
CA (1) | CA1082652A (en) |
DE (1) | DE2424682A1 (en) |
GB (1) | GB1455952A (en) |
Cited By (26)
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EP0228208A1 (en) * | 1985-12-27 | 1987-07-08 | Kidde, Inc. | Forklift variable reach mechanism |
WO1989000972A1 (en) * | 1987-07-27 | 1989-02-09 | Merlo S.P.A. Industria Metalmeccanica | A lifting truck with a telescopic lifting arm |
FR2624842A1 (en) * | 1987-12-18 | 1989-06-23 | Manitou Bf | IMPROVING THE STABILITY OF TELESCOPIC ARM LIFT TRUCKS |
FR2648122A1 (en) * | 1989-06-09 | 1990-12-14 | Manitou Costruzioni Ind | Telescopic arm device for a lifting truck |
US5478192A (en) * | 1990-02-13 | 1995-12-26 | Tovel Manufacturing Limited | Boom operated fork truck |
EP0692448A1 (en) | 1994-07-15 | 1996-01-17 | J.C. Bamford Excavators Limited | Material-handling vehicle |
US5618156A (en) * | 1992-06-30 | 1997-04-08 | Caterpillar Inc. | Material handling machine |
US5829605A (en) * | 1997-07-08 | 1998-11-03 | Poitras; Hermel G. | Mobile crane towable by a pickup truck |
EP0949187A2 (en) | 1998-04-09 | 1999-10-13 | J.C. Bamford Excavators Limited | Material-handling vehicle |
EP0949186A2 (en) | 1998-04-09 | 1999-10-13 | J.C. Bamford Excavators Limited | Material-handling vehicle |
EP0949185A2 (en) * | 1998-04-09 | 1999-10-13 | J.C. Bamford Excavators Limited | Material-handling vehicle |
EP0949107A2 (en) | 1998-04-09 | 1999-10-13 | J.C. Bamford Excavators Limited | Material-handling vehicle |
EP1063152A2 (en) | 1999-06-22 | 2000-12-27 | Deere & Company | Working vehicle |
US6336565B1 (en) | 1998-12-01 | 2002-01-08 | Joseph J. Merkel | Articulating truss boom |
US6514031B1 (en) | 1998-04-08 | 2003-02-04 | J. C. Bamford Excavators Limited | Material-handling vehicle |
US20030205547A1 (en) * | 2002-05-03 | 2003-11-06 | Clark Equipment Company | Extendible boom with removable hydraulic hose carrier |
US20040040137A1 (en) * | 2002-08-29 | 2004-03-04 | Sewell Andrew J. | Rotatable and telescopic work machine |
US6910544B2 (en) | 2000-12-09 | 2005-06-28 | Caterpillar Inc | Work machine arrangement |
US7360662B2 (en) | 2003-11-28 | 2008-04-22 | Cnh America Llc | Telescopic boom arm |
US20100226742A1 (en) * | 2009-03-06 | 2010-09-09 | Wazee Group, Inc. | Manual forklift apparatus and methods |
US20120321422A1 (en) * | 2010-03-10 | 2012-12-20 | C.M.C.S.R.L. - Societa Unipersonale | Self-moving operating machine with integrated lateral movement and leveling device |
USD756057S1 (en) * | 2014-09-04 | 2016-05-10 | Liebherr-Werk Nenzing Gmbh | Reachstacker |
USD758039S1 (en) * | 2014-09-04 | 2016-05-31 | Liebherr-Werk Nenzing Gmbh | Reachstacker |
US10960248B2 (en) * | 2018-04-23 | 2021-03-30 | Oshkosh Corporation | Aerial configuration for a mid-mount fire apparatus |
US10989332B2 (en) * | 2013-03-07 | 2021-04-27 | Oshkosh Corporation | Internally supported power track |
USD1011382S1 (en) * | 2021-06-01 | 2024-01-16 | Jiangsu Xcmg Construction Machinery Research Institute Ltd. | Aerial work platform vehicle |
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JPS52147178U (en) * | 1976-04-30 | 1977-11-08 | ||
JPS5320280U (en) * | 1976-07-27 | 1978-02-21 | ||
CA1073409A (en) * | 1976-09-03 | 1980-03-11 | John C. Christenson | Truss boom for material handling truck |
US4082197A (en) * | 1976-10-12 | 1978-04-04 | Caterpillar Tractor Co. | Articulated high lift vehicle |
US4394108A (en) * | 1977-12-21 | 1983-07-19 | Mid-Continent Aircraft Corporation | Front loader vehicle with telescoping boom |
US4280783A (en) * | 1979-04-10 | 1981-07-28 | Hayward John A D | Lost motion linkage assembly for a front loader |
EP0036455A1 (en) * | 1980-03-18 | 1981-09-30 | Liner Limited | Improved load handling vehicle |
CA1209172A (en) * | 1981-10-23 | 1986-08-05 | Peter E. Chance | Robotic manipulator arm |
US4547119A (en) * | 1981-10-23 | 1985-10-15 | United States Robots, Inc. | Robotic manipulator arm |
AU548550B2 (en) * | 1983-03-01 | 1985-12-19 | Dart Industries Inc. | Extensible workpiece manipulator |
US4802811A (en) * | 1983-08-12 | 1989-02-07 | N.C.H. Hydraulische Systemen Bv | Apparatus for loading and unloading an interchangeable container onto and from a vehicle |
US4666365A (en) * | 1983-11-18 | 1987-05-19 | Bon Ton Rolle Limited | Tube bundle pulling apparatus |
US4575305A (en) * | 1983-11-18 | 1986-03-11 | Bon Ton Rolle Limited | Truck mounted tube bundle pulling apparatus |
GB2163126B (en) * | 1984-08-18 | 1987-07-22 | Bamford Excavators Ltd | A boom and method of operating it |
US4822237A (en) * | 1985-11-21 | 1989-04-18 | The Gradall Company | Extended reach materials handling apparatus |
JPS62182725U (en) * | 1986-05-13 | 1987-11-19 | ||
SE458856B (en) * | 1987-02-24 | 1989-05-16 | Semax Truck Ab | DEVICE FORK TRUCK WITH REAR DRIVER'S LIFT MAST |
US4757875A (en) * | 1987-09-25 | 1988-07-19 | Kidde, Inc. | Vehicular low profile self propelled aerial work platform |
JPH0544125Y2 (en) * | 1987-12-23 | 1993-11-09 | ||
JPH0199616U (en) * | 1987-12-23 | 1989-07-04 | ||
JPH0199615U (en) * | 1987-12-23 | 1989-07-04 | ||
US4917566A (en) * | 1988-11-17 | 1990-04-17 | Contractors Crane Service, Inc. | Crane attachment for backhoe |
US5088873A (en) * | 1988-12-06 | 1992-02-18 | Yellow Freight System, Inc. | Manipulator mixed freight handling system |
US5267824A (en) * | 1989-04-26 | 1993-12-07 | Kabushiki Kaisha Japanic | Tool controlling mechanisms for excavator with telescopic arm |
CA2014164C (en) * | 1989-04-26 | 1995-12-12 | Mitsuhiro Kishi | Excavator with extendable outer arm including synchronizing movements for the bucket tilting actuator |
US5203072A (en) * | 1991-01-17 | 1993-04-20 | Ohmstede Mechanical Services, Inc. | Detachable crane- or boom-operated heat exchanger tube bundle extractor |
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EP0228208A1 (en) * | 1985-12-27 | 1987-07-08 | Kidde, Inc. | Forklift variable reach mechanism |
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US5199861A (en) * | 1987-07-27 | 1993-04-06 | Merlo S.P.A. Industria Metalmeccanica | Lifting truck with a telescopic lifting arm |
FR2624842A1 (en) * | 1987-12-18 | 1989-06-23 | Manitou Bf | IMPROVING THE STABILITY OF TELESCOPIC ARM LIFT TRUCKS |
EP0325064A1 (en) * | 1987-12-18 | 1989-07-26 | Manitou Bf | Improvement to the stability of forklift trucks with telescopic arm |
FR2648122A1 (en) * | 1989-06-09 | 1990-12-14 | Manitou Costruzioni Ind | Telescopic arm device for a lifting truck |
US5478192A (en) * | 1990-02-13 | 1995-12-26 | Tovel Manufacturing Limited | Boom operated fork truck |
US5618156A (en) * | 1992-06-30 | 1997-04-08 | Caterpillar Inc. | Material handling machine |
EP0577388B1 (en) * | 1992-06-30 | 1998-01-21 | Caterpillar Inc. | Material handling machine |
US5836733A (en) * | 1994-07-15 | 1998-11-17 | J.C. Bamford Excavators Limited | Material-handling vehicle |
EP0692448A1 (en) | 1994-07-15 | 1996-01-17 | J.C. Bamford Excavators Limited | Material-handling vehicle |
US5829605A (en) * | 1997-07-08 | 1998-11-03 | Poitras; Hermel G. | Mobile crane towable by a pickup truck |
US6514031B1 (en) | 1998-04-08 | 2003-02-04 | J. C. Bamford Excavators Limited | Material-handling vehicle |
EP0949187A2 (en) | 1998-04-09 | 1999-10-13 | J.C. Bamford Excavators Limited | Material-handling vehicle |
EP0949186A2 (en) | 1998-04-09 | 1999-10-13 | J.C. Bamford Excavators Limited | Material-handling vehicle |
EP0949185A2 (en) * | 1998-04-09 | 1999-10-13 | J.C. Bamford Excavators Limited | Material-handling vehicle |
EP0949107A2 (en) | 1998-04-09 | 1999-10-13 | J.C. Bamford Excavators Limited | Material-handling vehicle |
EP0949185A3 (en) * | 1998-04-09 | 1999-11-24 | J.C. Bamford Excavators Limited | Material-handling vehicle |
EP0949107A3 (en) * | 1998-04-09 | 2000-05-10 | J.C. Bamford Excavators Limited | Material-handling vehicle |
US6554558B2 (en) | 1998-04-09 | 2003-04-29 | J.C. Bamford Excavators Limited | Material-handling vehicle |
US6336565B1 (en) | 1998-12-01 | 2002-01-08 | Joseph J. Merkel | Articulating truss boom |
DE19928471C2 (en) * | 1999-06-22 | 2001-10-31 | Deere & Co | Work vehicle |
DE19928471A1 (en) * | 1999-06-22 | 2001-01-04 | Deere & Co | Work vehicle |
EP1063152A2 (en) | 1999-06-22 | 2000-12-27 | Deere & Company | Working vehicle |
US6910544B2 (en) | 2000-12-09 | 2005-06-28 | Caterpillar Inc | Work machine arrangement |
US20030205547A1 (en) * | 2002-05-03 | 2003-11-06 | Clark Equipment Company | Extendible boom with removable hydraulic hose carrier |
US7090086B2 (en) | 2002-05-03 | 2006-08-15 | Clark Equipment Company | Extendible boom with removable hydraulic hose carrier |
US20040040137A1 (en) * | 2002-08-29 | 2004-03-04 | Sewell Andrew J. | Rotatable and telescopic work machine |
US7383906B2 (en) | 2002-08-29 | 2008-06-10 | Jlg Industries, Inc. | Rotatable and telescopic work machine |
US7360662B2 (en) | 2003-11-28 | 2008-04-22 | Cnh America Llc | Telescopic boom arm |
US20100226742A1 (en) * | 2009-03-06 | 2010-09-09 | Wazee Group, Inc. | Manual forklift apparatus and methods |
US8047759B2 (en) * | 2009-03-06 | 2011-11-01 | Wazee Group, Inc. | Manual forklift apparatus and methods |
US20120321422A1 (en) * | 2010-03-10 | 2012-12-20 | C.M.C.S.R.L. - Societa Unipersonale | Self-moving operating machine with integrated lateral movement and leveling device |
US8764059B2 (en) * | 2010-03-10 | 2014-07-01 | C.M.C.S.R.L.—Societa Unipersonale | Self-moving operating machine with integrated lateral movement and leveling device |
US10989332B2 (en) * | 2013-03-07 | 2021-04-27 | Oshkosh Corporation | Internally supported power track |
USD756057S1 (en) * | 2014-09-04 | 2016-05-10 | Liebherr-Werk Nenzing Gmbh | Reachstacker |
USD758039S1 (en) * | 2014-09-04 | 2016-05-31 | Liebherr-Werk Nenzing Gmbh | Reachstacker |
US10960248B2 (en) * | 2018-04-23 | 2021-03-30 | Oshkosh Corporation | Aerial configuration for a mid-mount fire apparatus |
US11850456B2 (en) | 2018-04-23 | 2023-12-26 | Oshkosh Corporation | Aerial configuration for a mid-mount fire apparatus |
USD1011382S1 (en) * | 2021-06-01 | 2024-01-16 | Jiangsu Xcmg Construction Machinery Research Institute Ltd. | Aerial work platform vehicle |
Also Published As
Publication number | Publication date |
---|---|
JPS5019148A (en) | 1975-02-28 |
AU6856474A (en) | 1975-11-06 |
GB1455952A (en) | 1976-11-17 |
JPS5520993B2 (en) | 1980-06-06 |
US3836025A (en) | 1974-09-17 |
DE2424682A1 (en) | 1974-12-12 |
CA1082652A (en) | 1980-07-29 |
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