US3856108A - Three wheel aerial platform apparatus - Google Patents

Three wheel aerial platform apparatus Download PDF

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Publication number
US3856108A
US3856108A US00364194A US36419473A US3856108A US 3856108 A US3856108 A US 3856108A US 00364194 A US00364194 A US 00364194A US 36419473 A US36419473 A US 36419473A US 3856108 A US3856108 A US 3856108A
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US
United States
Prior art keywords
wheel
boom
axle
uprights
aerial platform
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
US00364194A
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English (en)
Inventor
J Grove
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.)
Fulton Industries Inc
Original Assignee
Fulton Industries Inc
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 Fulton Industries Inc filed Critical Fulton Industries Inc
Priority to US00364194A priority Critical patent/US3856108A/en
Priority to GB3353376A priority patent/GB1462964A/en
Priority to GB2116874A priority patent/GB1462963A/en
Priority to CA200,078A priority patent/CA992471A/en
Priority to AU69130/74A priority patent/AU490461B2/en
Priority to FR7417701A priority patent/FR2230537B1/fr
Priority to DE2424866A priority patent/DE2424866C3/de
Priority to BE144719A priority patent/BE815502A/xx
Priority to JP5925074A priority patent/JPS578948B2/ja
Application granted granted Critical
Publication of US3856108A publication Critical patent/US3856108A/en
Priority to JP8656277A priority patent/JPS5330523A/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F11/00—Lifting devices specially adapted for particular uses not otherwise provided for
    • B66F11/04—Lifting devices specially adapted for particular uses not otherwise provided for for movable platforms or cabins, e.g. on vehicles, permitting workmen to place themselves in any desired position for carrying out required operations
    • B66F11/044—Working platforms suspended from booms
    • B66F11/046—Working platforms suspended from booms of the telescoping type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D61/00—Motor vehicles or trailers, characterised by the arrangement or number of wheels, not otherwise provided for, e.g. four wheels in diamond pattern
    • B62D61/06—Motor vehicles or trailers, characterised by the arrangement or number of wheels, not otherwise provided for, e.g. four wheels in diamond pattern with only three wheels
    • B62D61/08—Motor vehicles or trailers, characterised by the arrangement or number of wheels, not otherwise provided for, e.g. four wheels in diamond pattern with only three wheels with single front wheel

Definitions

  • a three wheel aerial platform apparatus has a pair of aligned wheels at one end, a powered, steered single wheel at the other end and a boom having a platform at its free end.
  • the chassis comprises a pair of closely spaced vertical upright plates, the boom being between these uprights and carried on a horizontal pivot generally above the single wheel, the boom extending toward the dual wheels.
  • the boom pivot is outside the wheel-base.
  • An engine and pump are supported on the outside of one upright, and tanks are supported on the outside of the other upright.
  • the pair of wheels are carried outside the uprights on identical off-set axle assemblies having support bars extending into a pair of hollow, superposed beams extending transversely of the uprights, vertical transverse members joined to the support bars supporting the axles on a common axis.
  • the single wheel is steered by an expansible hydraulic motor which rotates a sector gear in mesh with a pinion gear on a stub shaft which supports the single wheel.
  • the stub shaft is journalled in a slab providing an integral counterweight and chassis member.
  • the present invention relates to aerial platform apparatus, and more particularly to aerial platform apparatus which is supported by three ground-engaging wheels.
  • the three wheel machines which have heretofore been proposed have had an excessive width, in order to achieve stability, the maximum width being provided bythe distance between the dual wheels. This distance has been, for example, some times greater than the width of the boom itself, thereby greatly restricting the utility of such machines, since they were not able to be moved through narrow spaces, such as conventional doorways found in industrial installations.
  • a problem which faces the constructor of such machines is the danger that the machine may tip over, when the aerial platform is at its greatest reach beyond the end of the machine, the machine rotating, in a typical construction, about the dual wheels.
  • a three wheel aerial platform apparatus having a chassis characterized by a pair of spaced, substantially parallel upright plates, These plates are' closely spaced, and atone end, a boom is mounted on a horizontal pivot, the boom being extensible, and carrying'on its outer or free end a workmans platform.
  • the platform is provided with controls for moving the boom, and for moving the entire apparatus.
  • a pair of dual wheels are provided at the end of the plates opposite to the boom pivot, these wheels being on the outside of the uprights.
  • the plates are cut away to provide a wheel well construction in which there is mounted a single wheel, carried by a fork which includes a stub axle, the fork having a drive motor mounted on it for driving the single wheel, and the stub axle extending generally vertically, and between the plates.
  • the stub axle is supported in a horizontal slab extending between the upright plates, this slab being a heavy mass and providing an integral counter-weight and chassis member extending between the uprights and having the stub shaft journalled in it.
  • the axis of the stub shaft is positioned relative to a vertical plane containing the horizontal boom pivot so that the latter lies outside of the wheel base, to increase stability.
  • the stub axle is rotated, to provide steering of the machine, by an apparatus which includes a linearly extensible hydraulic motor which is connected to a sector gear, the sector gear being in mesh with a pinion gear mounted on the stub axle.
  • a pair of hollow beams are provided, one above the other, at the end of the upright plates remote from the boom pivot, each supporting one of a pair of substantially identical off set axle assemblies.
  • Each axle assembly includes an outwardly extending axle on which one of the dual wheels is journalled, a vertically extending transverse member at the inner end of the wheel axle,
  • the support bar preferably has a length substantially equal to the length of the hollow beam, and at least has a length more than /2 of the hollow beam.
  • the vertical distance between the axis of a support bar and the wheel axis to which it is connected is substantially equal to /2 'of the depth of a hollow beam, the two hollow beams being substantially identical.
  • Another object of the present invention is the provi sion of a three wheel machine of narrowconstruction and having the wheels thereof extendable for stability.
  • Yet another object of the present invention is to provide a three wheel aerial platform apparatus having the mechanical equipment disposed to permit easy access for maintenance and repair.
  • Another object of the present invention is the provi-' sion of a machine of this type having an extensible boom, and having great stability againsttipping about ground-engaging wheels; a further object is to provide such a machine having an integral chassis member and counterweight.
  • Yet another object of the present invention is to provide a three wheel aerial platform having a steering construction utilizing a relatively economical low torque motor.
  • a further object of the present invention is the provision of an extensible axle construction having high strength, low cost, and substantially identical parts, while providing stability by having a common axis for the wheel axles.
  • FIG. 1 is an elevational view, withparts broken away, of a three wheel 'elevational machine in accordance with the present invention.
  • FIG. 2 is a plan view of the three wheel aerial platform apparatus shown FIG. 1, with parts in phantom lines.
  • FIG. 3 is a view taken on the line 33 of FIG. 1.
  • FIG. 4 is a view taken on the line 44 of FIG. 2.
  • FIG. 5 is a cross sectional view taken on the line 55 of FIG. 4.
  • the single wheel 13 is supported by a fork 31, shown broken away to reveal a drive motor 32 for the wheel 13, motor 32 being a hydraulic motor and having connection to a pump through lines 33.
  • motor 32 being a hydraulic motor and having connection to a pump through lines 33.
  • Slab 35 extends horizontally between the upright plates 16 and 17, and is an integral counterweight and chassis member. It may be, for example, approximately 4 inches in thickness, and is of considerably greater strength than is required by conventional stress considerations.
  • FIG. 2 it is provided with an opening 36 in which is placed suitable bearings 37 for journalling the stub shaft 34.
  • the wheel base extends from the axis of the stub by a powered and steerable wheel 13.
  • These wheels support a chassis generally designated l5,-of which one of a pair of upright plates 16 may be seen.
  • the plate 16, and corresponding plate 17 (FIG. 2) is cut away adjacent the single wheel 13 to provide a wheel well configuration,.generally designated 18.
  • the chassis plates 16 and 17 each has 'substantiallyall of the structural material thereof in a vertical plane, although they may also have inturned flanges such as flanges 16', '17 extending along the upper, inclined edges thereof.
  • the vertical height of the chassis plates 16 and 17 is non-uniform from end to end, being greatest intermediate the ends thereof.
  • a boom 20 is provided, and includes a base section 21 having a fly section 22 telescopically received therein, and being capable of being extended from the base section 21 by conventional apparatus such as a hydraulic cylinder, not shown.
  • the fly section 22 carries a connector 23 which supports a post 24 for movement about a horizontal pivot 24 A.
  • a workmans platform 25 is carried on the post 24, being supported in conventional manner by collars 25 A and 25 B.
  • Suitable controls 26 are provided, by which a workman on the platform 25 may raise and lower the boom 20, cause movement of the vehicle in either direction, and cause steering movement of the single wheel 13.
  • the boom 20 may be raised and lowered, as to the position indicated in dotted lines in FIG. 1, by a lift cylinder 27.
  • a lift cylinder 27 Pivot ally connected to the rear of the boom 20 is a master levelling cylinder 28 which is connected in known manner to a slave, levelling cylinder (not shown) which effects rotation of platform 25 about the pivot 24 A, to maintain it level in any position of the boom 20.
  • the boom 20 rotates about a horizontal pivot 30 which extends through the shaft 34 to the axis of the wheels '11 and 12, and the pivot 30 for the boom 20 lies outside of this wheel base.
  • the compartment is a compartment 45, on the outside of the upright plate 17, and within the compartment 45 there are provided tanks 46 and 47, one containing the fuel for the engine 41, and the other serving as a sump for the pump 42.
  • tanks 46 and 47 one containing the fuel for the engine 41, and the other serving as a sump for the pump 42.
  • conduits extend between the apparatus in the compartments 40 and 45, being beneath the boom 20 when. it is in the lowermost position thereof, as shown in FIG. 1.
  • the compartment 40 is provided with movable portions, so that when maintenance and repair are required, these movable portions are displaced so as to provide ready access to the engine 41 and pump 42.
  • a hydraulic motor 50 comprising a cylinder51 pivotally connected by a collar 52 to a pin 53 which is supported from the chassis 15 in any suitablemanner, and which extends vertically.
  • a piston 54 having a piston rod 55 connected to it, at its free end piston rod 55 being pivotally connected to a sector gear 56.
  • a shaft 57 supported by slab 35 has sector gear 56 journalled on it, and sector gear 56 is in mesh with a pinion 58 secured to a stub shaft 34.
  • the linearly extensible hydraulic motor may be of relatively low torque, and therefore of economical construction.
  • hydraulic fluid from the pump 42 may be selectively admitted to the hydraulic motor 50,-to effect steering of the single wheel 13.
  • FIGS. 4 and 5 there is shown the extensible axle construction of thedual wheels-the dual wheel 12 being shown in these Figures.
  • an upper box beam 60 and a contiguous lower box beam 61 of hollow, generally rectangular configuration (see also FIG. 1) these box beams extending normally between and being secured to the upright plates 16 and 17. Consequently, they form part of the chassis 15.
  • An axle assembly 65 is supported by each of the box beams-60 and 61, and while one axle assembly 65 "is shown in FIG. 4, it will be understood that there is a substantially identical and interchangeable axle assembly 65 for carrying the wheel 11.
  • the axle assembly 65 includes an axle 66, a vertical plate'67, also shown in FIG.
  • the support bar 68 has a rectangular cross section shape as shown in FIG. 5, and is received in mating relationship in the hollow beam 60, support bar 68 having a length substantially equal to the length of box beam 60.
  • the axle assembly 65 is off-set, the axis of the axle 66 being vertically spaced below the axis of support bar 68.
  • the distance between the axis of axle 66 and the axis of support bar 68 is substantially one-half of the height of the box beam 60, so that the axis of axle 66 extends in the plane which is the lower surface of upper box beam 60 andthe upper surface of lower box FIG. 2.
  • the wheels When the apparatus 10 has passed through a narrow door or aisle, and has reached its working station, the wheels maybe extended substantially, and then the boom may be raised and extended, and the single wheel 13 may be driven and steered, in order to place the platform at a desired location.
  • the driving
  • the journalling of the wheels. 12 on the axle 66 is conventional, and includes a hub 70, rim 71 and pneumatic tire 72. There is also provided a brake drum 73 and conventional brake shoes (not shown) which are actuated to brake releasing position upon the supplying of hydraulic fluid to the brake cylinder 74.
  • the width of the three wheel aerial platform apparatus 10, with the wheels 11 and 12 in the positions shown in FIG. 2 is established by the outside surfaces of the wheels 11 and 12. Due to the hereinabove set forth construction, this width may be very narrow, permitting the apparatus 10 to travel through narrow doorways and passageways. For example, in an apparatus 10, having the floor of the platform 25 l8'feet above ground, with a boom at an angle of 70 degrees to the horizontal, the width of the apparatus 10 is less than five feet. By sliding the support bars 68 outwardly, a stabilizing width of almost eight feet is obtained. Suitable lock pins or the like may be provided -to lock the support bars 68 in one or another selected position within the box beams 60 and 61.
  • the present apparatus is characterized by a chassis including a pair of vertical, closely spaced plates, so that the overall width of the apparatus is small.
  • the construction of the steering, utilizing a sector gearand pinion, enables the utilization of a low cost, low torque hydraulic motor.
  • the present apparatus also provides a unique, strong and high strength extensible axle construction. Maximum possible extension of the wheel is achieved, through a simple, identical axle assembly enabling th wheels to lie on a common axis.
  • the three wheel aerial platform apparatus 10 may be 6 driven and steered from the platform 25, with the wheels 11 and 12 in the retracted position as shown in pended claims.
  • a three wheel aerial platform apparatus comprising -a chassis comprising a pair of spaced, substantially parallel and planar uprights, i said planar uprights each having substantially all of the structural material thereof in a vertical plane,
  • a boom means located generally above said single wheel for horizontally pivotally supporting one end of said boom on and between said uprights, said boom extending from said pivotal means in the direction of said first mentioned wheels, a workman s platform supported at the opposite end of said boom,
  • said single wheel supporting means further comprising a stub shaft extending substantially vertically, and means journalling said stub shaft in said counter-weight slab, the horizontal pivotal axis of said boom being in a vertical plane spaced from said stub shaft and remote from said first mentioned wheels.
  • said single wheel supporting means comprising a-substantially vertically extending stub shaft, the horizontal pivotal axis of said boom being in a vertical plane spaced from said stub shaft and remote from said first mentioned wheels.
  • said single wheel supporting means further comprising a stub shaft extending substantially vertically, a pinion gear secured to said stub shaft, a sector gear pivotally supported on said apparatus and in mesh with said pinion, and expansible hydraulic motor means on said apparatus having one end secured to said sector gear remote from the pivot thereof and the other end secured to said apparatus.
  • axle means each including an axle having a said wheel journalled thereon, a transverse member at the inner end of said axle, and a support bar extending from said member opposite to said axle and into a said hollow beam.
  • an extendible axle construction comprising:
  • axle means each including: i. an outwardly extending axle for journalling a wheel, ii. a transverse member at the inner end of said axle, and iii. a support bar extending from said member opposite to said axle and into a said hollow beam,

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Movable Scaffolding (AREA)
  • Steering-Linkage Mechanisms And Four-Wheel Steering (AREA)
US00364194A 1973-05-25 1973-05-25 Three wheel aerial platform apparatus Expired - Lifetime US3856108A (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
US00364194A US3856108A (en) 1973-05-25 1973-05-25 Three wheel aerial platform apparatus
GB3353376A GB1462964A (en) 1973-05-25 1974-05-14 Three wheel aerial platform apparatus
GB2116874A GB1462963A (en) 1973-05-25 1974-05-14 Three-wheel aerial platform apparatus
CA200,078A CA992471A (en) 1973-05-25 1974-05-16 Three wheel aerial platform apparatus
AU69130/74A AU490461B2 (en) 1973-05-25 1974-05-20 Three wheel aerial platform apparatus
FR7417701A FR2230537B1 (enrdf_load_stackoverflow) 1973-05-25 1974-05-21
DE2424866A DE2424866C3 (de) 1973-05-25 1974-05-22 Arbeitsbühne mit drei Rädern
BE144719A BE815502A (fr) 1973-05-25 1974-05-24 Appareil a plate-forme aerienne sur trois roues
JP5925074A JPS578948B2 (enrdf_load_stackoverflow) 1973-05-25 1974-05-25
JP8656277A JPS5330523A (en) 1973-05-25 1977-07-18 Axle expanding and contracting apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00364194A US3856108A (en) 1973-05-25 1973-05-25 Three wheel aerial platform apparatus

Publications (1)

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US3856108A true US3856108A (en) 1974-12-24

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US00364194A Expired - Lifetime US3856108A (en) 1973-05-25 1973-05-25 Three wheel aerial platform apparatus

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US (1) US3856108A (enrdf_load_stackoverflow)
JP (2) JPS578948B2 (enrdf_load_stackoverflow)
BE (1) BE815502A (enrdf_load_stackoverflow)
CA (1) CA992471A (enrdf_load_stackoverflow)
DE (1) DE2424866C3 (enrdf_load_stackoverflow)
FR (1) FR2230537B1 (enrdf_load_stackoverflow)
GB (2) GB1462964A (enrdf_load_stackoverflow)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4169511A (en) * 1978-03-20 1979-10-02 Brown Philip A Boom-pulpit vehicle
US4226300A (en) * 1979-02-21 1980-10-07 Mark Industries Self propelled and extensible boom lift
USRE31400E (en) * 1979-02-21 1983-10-04 Mark Industries Self propelled and extensible boom
US4694930A (en) * 1985-04-03 1987-09-22 Kabushiki Kaisha Hikoma Seisakusho Lifting apparatus
US4757875A (en) * 1987-09-25 1988-07-19 Kidde, Inc. Vehicular low profile self propelled aerial work platform
US4775029A (en) * 1987-10-08 1988-10-04 Jlg Industries, Inc. Collapsible tower boom lift
US5257767A (en) 1990-06-13 1993-11-02 Waterloo Furniture Components, Ltd. Adjustable support mechanism for a keyboard platform
US6341665B1 (en) 1999-09-13 2002-01-29 Grove U.S. L.L.C. Retractable counterweight for straight-boom aerial work platform
ITBA20100009A1 (it) * 2010-03-04 2011-09-05 Nicola Cavallo "piattaforma elevabile semovente per la potatura di alberi di medio-alto fusto e per la raccolta della frutta"
US20130153336A1 (en) * 2011-12-14 2013-06-20 Lili Wu Personnel lift vehicle
US20130186708A1 (en) * 2011-12-14 2013-07-25 Lili Wu Personnel lift vehicle
USD730614S1 (en) 2013-11-26 2015-05-26 Big Lift, Llc. Personnel lift vehicle
EP3290388A1 (en) * 2016-08-31 2018-03-07 Zhejiang Dingli Machinery Co., LTD. Vehicle with a low gravity center and aerial work platform
CN108290727A (zh) * 2015-11-25 2018-07-17 马格尼自动操作机有限公司 自推进空中平台
CN108715111A (zh) * 2018-06-19 2018-10-30 湖南城市学院 一种美术生墙面涂鸦用工作台
US10647561B2 (en) * 2015-04-14 2020-05-12 Haulotte Group Lifting appliance and method for using such a lifting appliance
US10843912B1 (en) * 2019-07-26 2020-11-24 Ox Industries, Inc Electric rotary actuator for aerial work platform
CN119306117A (zh) * 2024-12-19 2025-01-14 山西韵通机械设备制造有限公司 箱梁安装用定位吊挂装置

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1979000118A1 (en) * 1977-08-30 1979-03-08 P Broberg Tractor
JPS61291400A (ja) * 1985-06-17 1986-12-22 株式会社ジャパニック 昇降装置
JPS61238699A (ja) * 1985-04-13 1986-10-23 株式会社ジャパニック 昇降装置
FR2750125B1 (fr) * 1996-06-19 1998-08-21 Manitou Bf Chariot elevateur pour preparation de commandes
CN113697727A (zh) * 2020-05-21 2021-11-26 苏州先锋物流装备科技有限公司 三轮转向控制系统

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Publication number Priority date Publication date Assignee Title
US2767995A (en) * 1953-06-08 1956-10-23 Robert H Stout Tractor anti-tilting attachment
US2821312A (en) * 1956-09-28 1958-01-28 Pick In Rig Inc Fruit picking apparatus
US2857725A (en) * 1955-05-04 1958-10-28 Clemson Bros Inc Adjustable wheel mounting apparatus for mowers
US2954092A (en) * 1957-08-26 1960-09-27 Walter E Thornton-Trump Mobile boom-supported platform
US2970667A (en) * 1958-06-18 1961-02-07 Willis M Bercaw Self propelled aerial platform and hydraulic control system therefor
US3243123A (en) * 1963-02-21 1966-03-29 Fmc Corp Spraying apparatus
US3319739A (en) * 1965-05-27 1967-05-16 Peter W Morse Self-propelled aerial platform
US3532307A (en) * 1968-07-11 1970-10-06 Fred Larson Retractable landing gear without hydraulic means

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA896344A (en) * 1970-01-23 1972-03-28 Honcor Sales Limited Self-propelled, hydraulically powered aerial platform vehicle and controls therefor

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2767995A (en) * 1953-06-08 1956-10-23 Robert H Stout Tractor anti-tilting attachment
US2857725A (en) * 1955-05-04 1958-10-28 Clemson Bros Inc Adjustable wheel mounting apparatus for mowers
US2821312A (en) * 1956-09-28 1958-01-28 Pick In Rig Inc Fruit picking apparatus
US2954092A (en) * 1957-08-26 1960-09-27 Walter E Thornton-Trump Mobile boom-supported platform
US2970667A (en) * 1958-06-18 1961-02-07 Willis M Bercaw Self propelled aerial platform and hydraulic control system therefor
US3243123A (en) * 1963-02-21 1966-03-29 Fmc Corp Spraying apparatus
US3319739A (en) * 1965-05-27 1967-05-16 Peter W Morse Self-propelled aerial platform
US3532307A (en) * 1968-07-11 1970-10-06 Fred Larson Retractable landing gear without hydraulic means

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4169511A (en) * 1978-03-20 1979-10-02 Brown Philip A Boom-pulpit vehicle
US4226300A (en) * 1979-02-21 1980-10-07 Mark Industries Self propelled and extensible boom lift
USRE31400E (en) * 1979-02-21 1983-10-04 Mark Industries Self propelled and extensible boom
US4694930A (en) * 1985-04-03 1987-09-22 Kabushiki Kaisha Hikoma Seisakusho Lifting apparatus
US4757875A (en) * 1987-09-25 1988-07-19 Kidde, Inc. Vehicular low profile self propelled aerial work platform
US4775029A (en) * 1987-10-08 1988-10-04 Jlg Industries, Inc. Collapsible tower boom lift
US5257767A (en) 1990-06-13 1993-11-02 Waterloo Furniture Components, Ltd. Adjustable support mechanism for a keyboard platform
US6341665B1 (en) 1999-09-13 2002-01-29 Grove U.S. L.L.C. Retractable counterweight for straight-boom aerial work platform
ITBA20100009A1 (it) * 2010-03-04 2011-09-05 Nicola Cavallo "piattaforma elevabile semovente per la potatura di alberi di medio-alto fusto e per la raccolta della frutta"
US9440830B2 (en) * 2011-12-14 2016-09-13 Big Lift, Llc Personnel lift vehicle
US10214402B2 (en) * 2011-12-14 2019-02-26 Big Lift, Llc Personnel lift vehicle
US20130153336A1 (en) * 2011-12-14 2013-06-20 Lili Wu Personnel lift vehicle
US11420858B2 (en) * 2011-12-14 2022-08-23 Big Lift, Llc Personnel lift vehicle
US20130186708A1 (en) * 2011-12-14 2013-07-25 Lili Wu Personnel lift vehicle
USD730614S1 (en) 2013-11-26 2015-05-26 Big Lift, Llc. Personnel lift vehicle
US10647561B2 (en) * 2015-04-14 2020-05-12 Haulotte Group Lifting appliance and method for using such a lifting appliance
CN108290727A (zh) * 2015-11-25 2018-07-17 马格尼自动操作机有限公司 自推进空中平台
US20180327240A1 (en) * 2015-11-25 2018-11-15 Magni Telescopic Handlers S.R.L. A self-propelled aerial platform
AU2016359090B2 (en) * 2015-11-25 2019-07-18 Zhejiang Dingli Machinery Co., Ltd. A self-propelled aerial platform
CN108290727B (zh) * 2015-11-25 2023-08-25 马格尼自动操作机有限公司 自推进空中平台
AU2017204042B2 (en) * 2016-08-31 2018-11-29 Zhejiang Dingli Machinery Co., Ltd. Vehicle with a low gravity center and aerial work platform
US10315902B2 (en) * 2016-08-31 2019-06-11 Zhejiang Dingli Machinery Co., Ltd Vehicle with a low gravity center and aerial work platform
EP3290388A1 (en) * 2016-08-31 2018-03-07 Zhejiang Dingli Machinery Co., LTD. Vehicle with a low gravity center and aerial work platform
CN108715111A (zh) * 2018-06-19 2018-10-30 湖南城市学院 一种美术生墙面涂鸦用工作台
US10843912B1 (en) * 2019-07-26 2020-11-24 Ox Industries, Inc Electric rotary actuator for aerial work platform
CN119306117A (zh) * 2024-12-19 2025-01-14 山西韵通机械设备制造有限公司 箱梁安装用定位吊挂装置

Also Published As

Publication number Publication date
AU6913074A (en) 1975-11-20
GB1462964A (en) 1977-01-26
FR2230537B1 (enrdf_load_stackoverflow) 1978-10-13
DE2424866A1 (de) 1974-12-12
CA992471A (en) 1976-07-06
BE815502A (fr) 1974-09-16
JPS5020502A (enrdf_load_stackoverflow) 1975-03-04
GB1462963A (en) 1977-01-26
DE2424866C3 (de) 1982-02-18
DE2424866B2 (de) 1981-06-11
JPS5623802B2 (enrdf_load_stackoverflow) 1981-06-02
JPS5330523A (en) 1978-03-22
JPS578948B2 (enrdf_load_stackoverflow) 1982-02-18
FR2230537A1 (enrdf_load_stackoverflow) 1974-12-20

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