US3872991A - Vehicle loader linkage means - Google Patents

Vehicle loader linkage means Download PDF

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Publication number
US3872991A
US3872991A US284279A US28427972A US3872991A US 3872991 A US3872991 A US 3872991A US 284279 A US284279 A US 284279A US 28427972 A US28427972 A US 28427972A US 3872991 A US3872991 A US 3872991A
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US
United States
Prior art keywords
carrying
lift arms
arms
lift
lever
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
Application number
US284279A
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English (en)
Inventor
Stamos I Pasideris
Jr Albert J Berkel
Paul D Hagen
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.)
Caterpillar Inc
Original Assignee
Caterpillar Tractor Co
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 Caterpillar Tractor Co filed Critical Caterpillar Tractor Co
Priority to US284279A priority Critical patent/US3872991A/en
Priority to CA175,307A priority patent/CA986467A/en
Priority to GB3964073A priority patent/GB1446019A/en
Priority to GB1150476A priority patent/GB1446020A/en
Priority to JP9579973A priority patent/JPS5631418B2/ja
Application granted granted Critical
Publication of US3872991A publication Critical patent/US3872991A/en
Priority to CA229,611A priority patent/CA990691A/en
Assigned to CATERPILLAR INC., A CORP. OF DE. reassignment CATERPILLAR INC., A CORP. OF DE. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: CATERPILLAR TRACTOR CO., A CORP. OF CALIF.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/34—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with bucket-arms, i.e. a pair of arms, e.g. manufacturing processes, form, geometry, material of bucket-arms directly pivoted on the frames of tractors or self-propelled machines
    • E02F3/3405—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with bucket-arms, i.e. a pair of arms, e.g. manufacturing processes, form, geometry, material of bucket-arms directly pivoted on the frames of tractors or self-propelled machines and comprising an additional linkage mechanism

Definitions

  • ABSTRACT A vehicle has a frame which has mounted adjacent the front thereof a pair of generally upwardly extending lever arms.
  • a pair of lift arms have their rear ends pivotally attached to the lever arms, and extend forwardly therefrom.
  • a carrying bucket is pivotally attached to the forward portions of the lift arms.
  • the lift arms may be raised and lowered by means of a cylinder during which, through the operation of a pair of link members associated with the frame and lift arms, the rear portions of the arms move (i) from a forward position when the lift arms are fully lowered, to (ii) a rearward position when the lift arms are in a position intermediatefully raised and fully lowered, and (iii) a forward position when the lift arms are fully raised, so that the carrying bucket describes a more vertical path during such raising and lowering of the arms than would be the case with normal linkages.
  • included is another linkage system for properly cooperating with the movement of the lifting arms, meanwhile allowing for proper, smooth movement of the carrying bucket between its carrying and its dumping positions.
  • This invention relates to a linkage system for a loader-type vehicle which effects generally vertical lifting of an implement carried at the forward end of a lift arm assembly associated with the vehicle.
  • the large majority of commercially available loading vehicles employ pairs of lift arms which transversely straddle the vehicle frame, and are pivotally supported thereby at their rearward extremities.
  • An implement such as an earthmoving bucket, is disposed on the forward extremity of the lift arms, and one or more extendible hydraulic cylinders are disposed between the frame and the arms to raise the arms for positioning the bucket with respect to a truck body for loading purposes.
  • the lift arms are pivotally anchored relative to the frame, the forward extremities of the arms describe an arcuate path as the arms are positioned from approximately 40 of 50 below to 40 or 50 above the horizontal. The arms reach a maximum forwardly disposed condition when they are substantially horizontally placed.
  • the load carried by the bucket has the maximum tendency to tip the vehicle forward about a forward ground engaging fulcrum point, such as the front wheels on a wheel loader, and it often becomes necessary to attach heavy counterweights to the rear of the machine for safety purposes.
  • the load in the bucket required to tip the vehicle so that the rear would tend to raise off the ground is referred to as the minimum tipping load.
  • the minimum tipping load is experienced when the lower bucket hinge point at the front of the lift arms is raised to substantially the same height as the pivotal connection of the lift arms to the vehicle frame. This condition generally corresponds to the vehicle load carrying or transporting mode of operation.
  • the invention is in combination with a vehicle having a vehicle frame.
  • the invention comprises first and second generally parallel lever arms pivotally fixed to the frame of the vehicle adjacent the forward end thereof and extending from the frame.
  • First and second generally parallel lift arms having elongated body portions extend forwardly relative to the vehicle, and have rear portions thereof pivotally fixed to the extended portions of the first and second lever arms respectively.
  • Implement means are associated with the forwardly extending portions of the Iiftarms.
  • First and second link members are pivotally fixed to and extend from the frame, the extended portions thereof being pivotally fixed to the elongated body portions of the first and second lift arms respectively, forwardly of said rear portions thereof.
  • means for moving the lift arms and the implement means therewith to fully raised and fully lowered positions relative to the vehicle including the link members being located to position the rear portions of the lift arms, with the lift arms intermediate the fully raised and fully lowered positions, (i) rearwardly of the positions of the rear portions with the lift arms in their fully raised positions, and (ii) rearwardly of the positions of the rear portions with the lift arms in the fully lowered positions, the lever arms pivoting to allow such forwardrearward movement of the rear portions of the lift arms.
  • FIG. 1 is a side elevation ofthe forward end of a vehi- DESCRIPTION OF THE PREFERRED EMBODIMENTS
  • a loading linkage is shown disposed on the forward portion of a vehicle main frame 12.
  • the forward end 14 of the main frame 12 includes an axle portion 16 and a pair of wheels 18.
  • Making up part of the frame 12 are forwardly leaning support arms 20, 22, which are secured to axle portion 16.
  • Pivotally fixed to the forward end 14 of frame 12 by means of pins 24, 26 in mounting ears 28, 30, are generally parallel lever arms 32, 34.
  • Such lever arms 32, 34 extend generally upwardly from the respective lever arm-frame pivot points thereof.
  • lift arms 36, 38 having elongated body portions 40, 42.
  • the rear portions 44, 46 of the lift arms 36, 38 are pivotally fixed to the extended portions of the lever arms 32, 34 by means of pins 48, ,50, and the body portions 40, 42 extend forwardly relatively to the vehicle 10.
  • Implement means i.e., a bucket
  • Such bucket 52 acts as carrying means in the operation of the vehi- 'cle 10.
  • Link members 54, 56 have fixed thereto and extending therebetween a tube 58, and a cover plate 60.
  • a pivot pin 62 pivotally fixes link members 54, 56 to the support arms 20, 22, passing through tube 58.
  • the extending portions 64, 66 oflink members 54, 56 are piv otally fixed to body portions 40, 42 of the lift arms 36, 38 by means of pins 68, 70, forwardly of the rear portions 44, 46 thereof.
  • a cylinder 72 has the body 74 thereof pivotally fixed to the lever arms 32, 34 between the lever arm-frame pivot points and extended portions thereof respectively, through pivotal arms 73, 75, the lever arms 32, 34 and arms 73, 75 being interconnected by a bar 77 so that they pivot together.
  • the extended, rod end 76 of the cylinder 72 is pivotally fixed to link members 54, 56 by pivot pin connection 78.
  • Each rod end-link member pivot point is between and not aligned with the associated link member-frame pivot point, and the extended portion of that link member, as
  • the link members 54, 56 are in their lowered positions with the extended portions 64, 66 thereof lower than the link memberframe pivot points determined by the pin 62. Also. with the lift arms 36, 38 in their fully raised positions as shown in FIG. 4, the link members 54. 56 are in their raised positions with the extended portions 64, 66 of the link members 54, 56 higher than the link memberframe pivot point determined by the pin 62. As such lift arms 36, 38 are raised and lowered, the path of thelink members 54, 56 and the corresponding path of the extended portions of the lever arms 32, 34 are shown in FIG. 4.
  • the rear portions 44, 46 of the lift arms 36, 38 are positioned, with the lift arms 36, 38 in such position between fully raised and fully lowered, (i) rearwardly of the positions thereof with the lift arms 36, 38 in their fully raised positions, and (ii) rearwardly of the positions thereof with the lift arms 36, 38 in their fully lowered positions.
  • the bucket 52 describes a path 80 inward or rearward of the path generally indicated in FIG. 4 as that of the ordinary non-retracting prior art bucket path. Obviously, the same path 80 is achieved when the lift arms 36, 38 are moved from the fully raised to the fully lowered positions thereof.
  • FIGS. 5-8 a similar system for raising and lowering lift arms 90, 92 of a vehicle 94, said lift arms 90, 92 having a bucket 96 fixed thereto.
  • Such system also includes a cylinder 98 the extension of which pivots link members 100, 102 upwardly, raising the lift arms 90, 92, and the retraction of which pivots link members 100, 102 downwardly, lowering the lift arms 90, 92.
  • bucket 96 describes a path 104 (FIG. 8) upon the raising and lowering thereof, as compared to the general prior art path shown.
  • FIGS. 1-4 it will be remembered that the cylinder body 74 thereofis pivotally connected relative to the lever arms 32, 34, as described above.
  • the lever arms 32, 34 pivot initially rearwardly.
  • the extension of the cylinder 72 aids in such rearward pivoting, since the cylinder 72 acts directly on the lever arms 32, 34 until lift arms 36, 38 are in the positions between fully raised and fully lowered.
  • the cylinder 98 is pivotally fixed to the frame 106 of the vehicle 94, and does not directly aid in such rearward pivoting of the lever arms thereof. It will be understood that either embodiment may use'either cylinder mounting desired.
  • bucket 52 is pivotally mounted to the forwardly extending portions of the lift arms 36, 38, and movable relative to the lift arms 36, 38 to the carrying position and to the dumping position.
  • Control means 110 are provided for controlling this movement of the bucket 52.
  • Such control means 110 comprise a control system 112 associated with lift arm 36, and a control system 114 associated with lift arm 38.
  • a control system 112 associated with lift arm 36 and a control system 114 associated with lift arm 38.
  • the systems 112, l 14 are identical and work together, only one will be described in detail.
  • Control system 114 includes a control lever I16 mounted between its ends 118, 120 to lift arm 38 between the rear portion 46 and the forwardly extending portion of the lift arm 38.
  • a cylinder 122 has one end pivotally mounted to end 118 of control lever 116, and the other end pivotally mounted to lever arm 34 adjacent the extended portion thereof.
  • a control link 124 has one end pivotally mounted to the end of control lever 116, and the other end pivotally mounted to a flange 126 fixed to bucket 52, and thus pivotally mounted relative to bucket 52. It will be seen that extension of the cylinder 122 moves the bucket 52 to the carrying position (FIG. 3), and retraction of the cylinder 122 moves the bucket 52 to the dumping position (FIG. 4). Because of this particular control linkage. it will be seen that, once the bucket 52 is selectively positioned in the carrying position (FIG. 3), it remains in this carrying position as the lift arms 36, 38 are raised and lowered (FIGS. 3 and 4).
  • control means 150 include a link 152 pivotally mounted at one end to the lift arm 92 between the rearward portion and the forwardly extending portion of the lift arm 92.
  • a cylider 154 has one end pivotally fixed to an extension 156 of lever arm 155, and the other end pivotally fixed to link 152 between the ends of link 152.
  • a control link 158 is pivotally fixed relative to bucket 96 and the extending end of link 152, so that it will be seen that extension and retraction of cylinder 154 moves the bucket 96 to its dumping and its carrying positions. (It will be understood that lift arm 90 has similar linkage means associated therewith to act with such described linkage means associated with lift arm 92.)
  • stop means 160 associated with the bucket 96 and lift arms 90, 92 for limiting movement of the bucket 96 as the bucket 96 is moved to the dumping position to, in fact, define such dumping position.
  • stop means 160 are made up of a flange 162 extending from the bucket 96 and adapted to contact a lift arm 92 to define such dumping position.
  • the bucket thereof when being raised and lowered, describes a path inwardly of the general prior art bucket path (see FIGS. 4 and 8),
  • Each entire linkage system has the advantage that it is mounted at the front portion of the vehicle, and that through this feature, there are no members which extend rearwardly thereof to adversely influence the disposition-of vehicle components, or to pose a safety hazard.
  • Both embodiments include means for retaining a chosen angular disposition ofthe bucket as the lift arms thereof are raised and lowered.
  • the means have the added advantage that movement of the bucket 52 lessens (i.e., it slows down) as it approaches its dumping position, increasing efficiency of the dumping operation.
  • first and second generally parallel lever arms pivotally fixed to the frame of the vehicle adjacent the forward end thereof, and extending from the frame;
  • first and second generally parallel lift arms having elongated body portions and extending forwardly relative to the vehicle and having rear portions pivotally fixed to the extended portions of the first and second lever arms respectively; implement means associated with the forwardly extending portions of the lift arms; first and second link members pivotally fixed to and extending from the frame, the extended portions thereof being pivotally fixed to the elongated body portions of the first and second lift arms respectively, forwardly of said rear portions thereof; and, means for moving the lift arms and the implement means therewith to fully raised and fully lowered positions relative to the vehicle, the link members being located to position the rear portions of the lift arms, with the lift arms between the fully raised and fully lowered positions, (i) rearwardly of the positions of the rear portions with the lift arms in their fully raised positions, and (ii) rearwardly of the positions of the rear portions with the lift arms in the fully lowered positions, the lever arms pivoting to allow such forward-rearward movement of the rear portions of the lift arms, wherein (i) with the lift arms in the fully lowered positions, each link member
  • each lever arm extends generally upwardly from that lever arm-frame pivot point, with the extended portion of each lever arm moving initially rearwardly as the lift arms are raised from their fully lowered to their positions between fully raised and fully lowered, and then forwardly as the lift arms are raised from between fully raised and fully lowered to their fully raised positions.
  • said implement means comprise carrying means pivotably mounted to the forwardly extending portions of the lift arms and movable relative to the lift arms to a carrying and to a dumping position.
  • control means for selectively moving the carrying means to the carrying position and dump- I ing position, meanwhile providing that the carrying means, once selectively positioned in the carrying position, remain substantially in such carrying position as the lift arms are raised and lowered.
  • control means comprise a control lever pivotally mounted between its ends to a lift arm between the rear portion and forwardly extending portion of the lift arm, second cylinder means one end of which is pivotally mounted to one end of the control lever and the other end of which is pivotally mounted to a lever arm adjacent the extended portion thereof, and a control link one end of which is pivotally mounted to the other end of the control lever and the other end of which is pivotally mounted relative to the carrying means, so that the extension of the second cylinder means moves the carrying means to the carrying position, and the retraction of the second cylinder means moves the carrying means to the dumping position.
  • stop means comprise a flange extending from said carrying means and adapted to contact a lift arm to define the dumping position.
  • first and second generally parallel lever arms pivotally fixed to the frame of the vehicle and extending from the frame;
  • first and second generally parallel lift arms having elongated body portions extending forwardly relative to the vehicle and having rear portions pivotally fixed to the extended portions of the first and second lever arms respectively;
  • control means for selectively moving the carrying means to the carrying position and dumping position, meanwhile providing that the carrying means, once selectively positioned in the carrying position, remain substantially in such carrying position as the lift arms are raised and lowered, such control means comprising a control lever pivotally mounted between its ends to a lift arm between the rear portion and forwardly extending portion of the lift arm.
  • control cylinder means one end of which is pivotally mounted to one end of the control lever and the other end of which is pivotally mounted to the lever arm adjacent the extended portion thereof, and a control link one end of which is pi ⁇ ' otally mounted to the other end of the control lever and the other end of which is pivotally mounted relative to the carrying means, so that extension of the control cylinder means moves the carrying means to the carrying position, and retraction of the control cylinder means moves the carrying means to the dumping position.
  • control cylinder means, control lever, and control link are positioned so that as the control cylinder means are extended at a relatively constant rate to move the carrying means form the carrying position to the dumping position, the rate of pivoting of the carrying means relative to the lift arm lessens as the dumping position thereof is approached.
  • stop means comprise a flange extending from the carrying means and adapted to contact a lift arm to define the dumping position.
  • control means comprise a link pivotally mounted at one end to a lift arm between the rear portion and the forwardly extending portion of the lift arm, second cylinder means one end of which is pivotally fixed to the link between the ends of said link, and the other end of which is pivotally fixed relative to a lever arm adjacent the extended portion thereof. and a control link one end of which is pivotally mounted to the extending end of the link and the other end of which is pivotally mounted relative to the carrying means so that the retraction of the second cylinder means moves the carrying means to the carrying position, and the extension of the second cylinder means moves the carry ing means to the dumping position.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Agricultural Machines (AREA)
  • Shovels (AREA)
  • Lifting Devices For Agricultural Implements (AREA)
  • Operation Control Of Excavators (AREA)
  • Forklifts And Lifting Vehicles (AREA)
US284279A 1972-08-28 1972-08-28 Vehicle loader linkage means Expired - Lifetime US3872991A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US284279A US3872991A (en) 1972-08-28 1972-08-28 Vehicle loader linkage means
CA175,307A CA986467A (en) 1972-08-28 1973-06-29 Vehicle loader linkage means
GB3964073A GB1446019A (en) 1972-08-28 1973-08-21 Implement-carrying vehicle
GB1150476A GB1446020A (en) 1972-08-28 1973-08-21 Implement-carrying vehicle
JP9579973A JPS5631418B2 (enrdf_load_stackoverflow) 1972-08-28 1973-08-28
CA229,611A CA990691A (en) 1972-08-28 1975-06-18 Vehicle loader linkage means

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US284279A US3872991A (en) 1972-08-28 1972-08-28 Vehicle loader linkage means

Publications (1)

Publication Number Publication Date
US3872991A true US3872991A (en) 1975-03-25

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Application Number Title Priority Date Filing Date
US284279A Expired - Lifetime US3872991A (en) 1972-08-28 1972-08-28 Vehicle loader linkage means

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Country Link
US (1) US3872991A (enrdf_load_stackoverflow)
JP (1) JPS5631418B2 (enrdf_load_stackoverflow)
CA (1) CA986467A (enrdf_load_stackoverflow)
GB (2) GB1446019A (enrdf_load_stackoverflow)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4002253A (en) * 1975-02-03 1977-01-11 Vesco Manufacturing And Supply Limited Attachment for articulated vehicle
US4029226A (en) * 1976-04-12 1977-06-14 J. I. Case Company Linkage support system for material handling unit
US4316697A (en) * 1978-12-13 1982-02-23 Kabushiki Kaisha Komatsu Seisakusho Front-loading hydraulic excavator
US4465425A (en) * 1981-02-06 1984-08-14 O&K Orenstein & Koppel Aktiengesellschaft Device for the paraxial kinetic control of a lifting machine boom
US4725189A (en) * 1986-09-15 1988-02-16 Westendorf Mfg. Co., Inc. Rear-mounted loader bucket for a tractor including roll-back means
US20090077840A1 (en) * 2007-09-21 2009-03-26 Zeno Joseph R Progressive linkage for excavator thumb
US20180202126A1 (en) * 2016-01-29 2018-07-19 Guangxi Liugong Machinery Co.,Ltd. Self-level Mechanism for A Construction Machine
US10221540B2 (en) 2015-02-20 2019-03-05 The Toro Company Utility loader with high lift loader arms and unifying hand grip for dual traction control levers
US20190177947A1 (en) * 2017-12-12 2019-06-13 CNH Industrial America, LLC Implement adjustment assembly for a work vehicle
US10344449B2 (en) * 2015-02-02 2019-07-09 Guangxi Liugong Machinery Co., Ltd. Lifting arrangement for a construction machine
CN110785527A (zh) * 2018-01-26 2020-02-11 广西柳工机械股份有限公司 用于轮式装载机的升降装置
CN110809656A (zh) * 2018-01-26 2020-02-18 广西柳工机械股份有限公司 竖直升降装载机
EP3610076A4 (en) * 2018-01-26 2021-01-27 Guangxi LiuGong Machinery Co., Ltd. LOADER WITH LIFTING ARRANGEMENT

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6370619U (enrdf_load_stackoverflow) * 1986-10-29 1988-05-12
GB9012147D0 (en) * 1990-05-31 1990-07-18 Pocklington Alfred T Hi-low tip dumper
US5226777A (en) * 1991-02-28 1993-07-13 Simmons-Rand Company Load lifting system for vehicles
US7595015B1 (en) 2000-05-25 2009-09-29 Grain Processing Corporation Cold-water soluble extruded starch product
IES20020524A2 (en) * 2001-06-28 2002-12-30 Michael Anthony Gaffney Lifting apparatus

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3024933A (en) * 1958-03-03 1962-03-13 Pettibone Mulliken Corp Multi-action front end loaders
US3411647A (en) * 1967-02-23 1968-11-19 Int Harvester Co Boom assembly for tractor loader
US3731827A (en) * 1971-05-07 1973-05-08 Taylor Machine Works Logging machine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3024933A (en) * 1958-03-03 1962-03-13 Pettibone Mulliken Corp Multi-action front end loaders
US3411647A (en) * 1967-02-23 1968-11-19 Int Harvester Co Boom assembly for tractor loader
US3731827A (en) * 1971-05-07 1973-05-08 Taylor Machine Works Logging machine

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4002253A (en) * 1975-02-03 1977-01-11 Vesco Manufacturing And Supply Limited Attachment for articulated vehicle
US4029226A (en) * 1976-04-12 1977-06-14 J. I. Case Company Linkage support system for material handling unit
US4316697A (en) * 1978-12-13 1982-02-23 Kabushiki Kaisha Komatsu Seisakusho Front-loading hydraulic excavator
US4465425A (en) * 1981-02-06 1984-08-14 O&K Orenstein & Koppel Aktiengesellschaft Device for the paraxial kinetic control of a lifting machine boom
US4725189A (en) * 1986-09-15 1988-02-16 Westendorf Mfg. Co., Inc. Rear-mounted loader bucket for a tractor including roll-back means
US20090077840A1 (en) * 2007-09-21 2009-03-26 Zeno Joseph R Progressive linkage for excavator thumb
US7818901B2 (en) * 2007-09-21 2010-10-26 Acs Industries, Inc. Progressive linkage for excavator thumb
US10344449B2 (en) * 2015-02-02 2019-07-09 Guangxi Liugong Machinery Co., Ltd. Lifting arrangement for a construction machine
US10221540B2 (en) 2015-02-20 2019-03-05 The Toro Company Utility loader with high lift loader arms and unifying hand grip for dual traction control levers
US11255068B2 (en) 2015-02-20 2022-02-22 The Toro Company Utility loader with high lift loader arms and unifying hand grip for dual traction control levers
US11702815B2 (en) 2015-02-20 2023-07-18 The Toro Company Utility loader with high lift loader arms and unifying hand grip for dual traction control levers
US12398528B2 (en) 2015-02-20 2025-08-26 The Toro Company Utility loader with high lift loader arms and unifying hand grip for dual traction control levers
US20180202126A1 (en) * 2016-01-29 2018-07-19 Guangxi Liugong Machinery Co.,Ltd. Self-level Mechanism for A Construction Machine
US10633819B2 (en) * 2016-01-29 2020-04-28 Guangxi Liugong Machinery Co., Ltd. Self-level mechanism for a construction machine
US20190177947A1 (en) * 2017-12-12 2019-06-13 CNH Industrial America, LLC Implement adjustment assembly for a work vehicle
CN110785527A (zh) * 2018-01-26 2020-02-11 广西柳工机械股份有限公司 用于轮式装载机的升降装置
CN110809656A (zh) * 2018-01-26 2020-02-18 广西柳工机械股份有限公司 竖直升降装载机
EP3610077A4 (en) * 2018-01-26 2021-01-06 Guangxi LiuGong Machinery Co., Ltd. LIFTING ARRANGEMENT FOR WHEEL LOADERS
EP3610076A4 (en) * 2018-01-26 2021-01-27 Guangxi LiuGong Machinery Co., Ltd. LOADER WITH LIFTING ARRANGEMENT
EP3610074A4 (en) * 2018-01-26 2021-04-14 Guangxi LiuGong Machinery Co., Ltd. VERTICAL LIFT LOADER

Also Published As

Publication number Publication date
GB1446020A (en) 1976-08-11
GB1446019A (en) 1976-08-11
JPS4958606A (enrdf_load_stackoverflow) 1974-06-06
JPS5631418B2 (enrdf_load_stackoverflow) 1981-07-21
CA986467A (en) 1976-03-30

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Legal Events

Date Code Title Description
AS Assignment

Owner name: CATERPILLAR INC., 100 N.E. ADAMS STREET, PEORIA, I

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:CATERPILLAR TRACTOR CO., A CORP. OF CALIF.;REEL/FRAME:004669/0905

Effective date: 19860515

Owner name: CATERPILLAR INC., A CORP. OF DE.,ILLINOIS

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CATERPILLAR TRACTOR CO., A CORP. OF CALIF.;REEL/FRAME:004669/0905

Effective date: 19860515