US3892079A - Control system for amphibious hydraulic excavator - Google Patents

Control system for amphibious hydraulic excavator Download PDF

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Publication number
US3892079A
US3892079A US318700A US31870072A US3892079A US 3892079 A US3892079 A US 3892079A US 318700 A US318700 A US 318700A US 31870072 A US31870072 A US 31870072A US 3892079 A US3892079 A US 3892079A
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US
United States
Prior art keywords
hydraulic
pressure fluid
directional control
pilot pressure
valves
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
US318700A
Other languages
English (en)
Inventor
Kinichi Hirano
Yoshiaki Metsugi
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.)
Hitachi Construction Machinery Co Ltd
Original Assignee
Hitachi Construction Machinery Co Ltd
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 Hitachi Construction Machinery Co Ltd filed Critical Hitachi Construction Machinery Co Ltd
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Publication of US3892079A publication Critical patent/US3892079A/en
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
    • E02F3/30—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 a dipper-arm pivoted on a cantilever beam, i.e. boom
    • E02F3/32—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 a dipper-arm pivoted on a cantilever beam, i.e. boom working downwardly and towards the machine, e.g. with backhoes
    • 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
    • E02F3/30—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 a dipper-arm pivoted on a cantilever beam, i.e. boom
    • 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
    • E02F3/36—Component parts
    • E02F3/42—Drives for dippers, buckets, dipper-arms or bucket-arms
    • E02F3/425—Drive systems for dipper-arms, backhoes or the like
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F5/00—Dredgers or soil-shifting machines for special purposes
    • E02F5/006—Dredgers or soil-shifting machines for special purposes adapted for working ground under water not otherwise provided for
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/2025—Particular purposes of control systems not otherwise provided for
    • E02F9/205—Remotely operated machines, e.g. unmanned vehicles
    • 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
    • Y10S414/122—Remote control handlers
    • 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
    • Y10S60/00—Power plants
    • Y10S60/911—Fluid motor system incorporating electrical system

Definitions

  • said mentioned parts are fabricated water-tight while said prime mover being provided with a schnorkel or breathing mast for use of air suction and exhaust, thereby enabling the excavator to be operated under water.
  • This invention relates to an amphibious hydraulic excavator, and more particularly to an amphibious hydraulic-driven excavating machine such as dozershovel or power-shovel which is capable of operating in water.
  • An object of the invention is to obviate the above described prior art defects by providing an amphibious hydraulic excavator which can be unobjectionably operated even in water.
  • Another object of the invention is to provide an amphibious hydraulic excavator which can be remote radie-controlled.
  • Still another object is to provide an amphibious hy draulic excavator which makes it possible to practice manual operations by the operator aboard as well as remote radio-control.
  • the amphibious hydraulic-driven shovel comprises: an amphibious crawlermounted truck; hydraulic motors for driving said truck; a revolving platform mounted rotatably on said truck; a further hydraulic motor for rotatingly driving said revolving platform; a shovel assembly consisting of a boom. an arm and a bucket, each being actuated by a respective hydraulic cylinder; at prime mover installed on said revolving platform; hydraulic pumps to be driven by said prime mover for producing necessary pressure fluid; directional control valves for controlling the flows of the pressure fluid to be fed to and for said hydraulic motors and cylinders. respectively; and means for actuating said directional control valves. characterized in that all the parts of the hydraulic excavator are fabricated water-tight while said prime mover being provided with a schnorkel apparatus or breathing mast for use of air suction and exhaust.
  • FIG. I is a schematic elevation of an amphibious hydraulic excavator of the invention.
  • FIG. 2 is a hydraulic circuit diagram showing how the excavator is hydraulically operated according to the invention.
  • reference numeral I indicates an amphibious crawler-mounted truck; 2 indicates a revolving platform mounted on the truck I for turning movement thereon through a water-tight pintle 3; 4 indicates a boom connected to the revolving platform 2 and adapted for upward and downward swingable movement; 5 indicates an arm provided in connection at the extreme end of said boom 4; 6 indicates a bucket mounted at the extreme end of said arm; 7 and 8 indicate left-and right-side traction hydraulic motors. respectively; 9 indicates a hydraulic motor for driving the revolving platform 2; and numerals 10, 11 and 12 indicate hydraulic cylinders for actuating the boom 4, arm 5 and bucket 6, respectively. All of the parts described above are driven or actuated by hydraulic pressure.
  • Numeral 13 indicates an engine room installed on the revolving platform 2. in which room 13 are provided a prime mover l4 and its associated parts including a radiator etc.. all in a water-tight arrangement.
  • 15 indicates a schnorkel or breathing mast extending upwardly from the engine room 13 and it serves as an air intake and exhaust conduit for the prime mover l4.
  • Numeral 17 shows a radio receiver which is stored in a water-tight container 19 provided at the front portion of the revolving platform 2; and 16 shows its antenna. It is arranged that the antenna 16 receives radio signals sent from a radio transmitter 18 actuated by the operator who controls the submerged excavator from ashore.
  • Numerals 20 and 21 show hydraulic fluid pumps. respectively.
  • Numeral 25 shows a 3-valve assembly composed of pilot-operated directional control valves 25a, 25b and 250 juxtaposed to one another.
  • the valve 250 is for a fluid line to the hydraulic motor 9, the valve 25b for that to the cylinder 11 for actuation of the arm, and the valve 250 is for that to the left-sided traction fluid motor 7.
  • Another 3valve assembly is shown at 26 as composed of pilot-operated directional control valves 26a. 26b and 26c also arranged in juxtaposition. which valves being connected on respective lines to the rightsided traction fluid motor 8, the cylinder 12 for the bucket and the cylinder I0 for the boom.
  • Reference numerals 27 through 32 indicate solenoid valves for use in the operation of remote radio-control.
  • each solenoid valve is specifically fabricated in a water-tight design or housed within a water-tight protective container.
  • the solenoid valves 27 through 32 are in communication, via respective shuttle valves 33, with the corresponding directional control valves 25a through 25c in the assembly 25 and those 26a through 26c in the assembly 26, in that order mentioned.
  • the solenoid valves 27 through 32 are adapted to be energized by electric signals sent from the radio receiver 17 through respective watertight cables 34 so that pilot pressure fluid from the auxiliary pump 22 be supplied to the directional control valves in the 3-valve assemblies 25 and 26.
  • Numerals 35 through 40 indicate manual flow control valves to be used by the operator riding on the excavator, and these manual flow control valves are in connection, through the respective shuttle alves 33, with the directional control valves 250 through 25c and 26a through 260 of the 3-valve assemblies 25 and 26, in a corresponding manner.
  • the manual flow control valves 35 through 40 serve to meter the flow of pilot pressure fluid from the auxiliary pump 22 to the directional control valves of the 3-valve assemblies 25 and 26, in response to the angular displacement of their respective levers.
  • the radio transmitter 18 sends a triggering signal specified for the operation of raising the boom 4 to the radio receiver 17, which receiver 17 then responds to energize the solenoid valve associated with the boom cylinder so that the pilot pressure fluid from the auxiliary pump 22 is delivered to the respective shuttle valve 33.
  • the latter valve changes its position such that pressure fluid delivered from the hydraulic pump 21 is applied upon the working surface of the piston head in the boom cylinder 10.
  • the piston rod in the boom cylinder 10 extends from the cylinder to raise the boom.
  • the similar step will be taken in that a different signal specified for lowering ofthe boom is sent to the receiver 17 from the transmitter 18; then the solenoid valve 32 is actuated to change its position so that the directional control valve 26c is supplied with the pilot pressure fluid from the auxiliary pump 22 through the associated shuttle valve 33; the valve 26c changes its position to direct the flow of pressure fluid from the pump 21 to the side of the piston rod in the boom cylinder 10; and thus the piston rod yields to lower the boom 4.
  • Raising or lowering the boom 4 is attained through the function of the manual flow control valve 40. Namely, when the lever of the manual valve 40 is rotated, the directional control valve 260 is supplied increasingly with the pilot pressure fluid from the auxiliary pump 22 to change its position so that the pressure fluid from the hydraulic pump 21 is applied upon the piston head in the boom cylinder 10, thus extending the piston rod to raise the boom 4.
  • the pilot-operated directional control valve When actuating further the lever of the manual valve, the pilot-operated directional control valve changes its position, due to the function of the shuttle valve, such that the pressure fluid from the pump is directed to the side of the piston rod in the boom cylinder, thus the piston rod being yielded to lower the boom.
  • the amphibious hydraulic excavator of the invention it is made possible to perform various works under water such as river or harbor excavating works including digging up the bottom of river or sea and loading the diggings onto the dump boat, in a remarkably easy manner, by virtue of the improved re' mote radio-controlled operation, Additionally, the invention also makes it possible, again thanks to its featured operation of remote radio-controlling, to perform such excavating operations at a working field on land with adverse environmental conditions such as an obstructed view, hazard in operation, presence of noxious gasses, unbearble heat, etc.
  • the hydraulic excavator of the invention can be operated either in a radio-controlled manner or in an ordinary manner by the operator riding on the machine, there will conveniently be provided free choice on the operating system well adapted for the working conditions, thus making contribution to significantly alleviating the physical fatigue of the operator as well as bettering the working conditions.
  • An amphibious hydraulic excavator comprising: an amphibious crawling truck; hydraulic motors for driving said crawling truck; a revolving platform mounted rotatably on said truck; a further hydraulic motor for rotating said revolving platform; a shovel assembly mounted on said revolving platform and composed of a boom, an arm and a bucket which are actuated by respective hydraulic cylinders; an engine room mounted on said revolving platform; a prime mover installed in said engine room; hydraulic pumps driven by said prime mover for delivering pressure fluid; pilot operated directional control valves for controlling the flows of pressure fluid to and from said hydraulic motors and said hydraulic cylinders, respectively; a snorkle means extending upwardly from the engine room for serving as an air suction and exhaust conduit for said prime movers; means for actuating said directional control valves, said actuating means being activated by radio signals and including a radio receiver for receiving triggering signals; a source of pilot pressure fluid; fluid lines connecting said source of pilot pressure fluid with the respective

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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)
  • Operation Control Of Excavators (AREA)
US318700A 1971-12-27 1972-12-26 Control system for amphibious hydraulic excavator Expired - Lifetime US3892079A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP46105322A JPS5238323B2 (zh) 1971-12-27 1971-12-27

Publications (1)

Publication Number Publication Date
US3892079A true US3892079A (en) 1975-07-01

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Family Applications (1)

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US318700A Expired - Lifetime US3892079A (en) 1971-12-27 1972-12-26 Control system for amphibious hydraulic excavator

Country Status (3)

Country Link
US (1) US3892079A (zh)
JP (1) JPS5238323B2 (zh)
FR (1) FR2166032B1 (zh)

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4096960A (en) * 1977-04-26 1978-06-27 Gilmore Charles L Haystack mover control means
US4123858A (en) * 1971-07-06 1978-11-07 Batchelder George W Versatile submersible device for dredging or other underwater functions
EP0034857A1 (en) * 1980-02-26 1981-09-02 Jacobus Maria Josef Hofland Movable dredging device
US4289456A (en) * 1978-05-24 1981-09-15 Masamitsu Ishihara Underwater pump
WO1983002483A1 (en) * 1982-01-13 1983-07-21 Reeves, Jerry, L. Container handler with programmed electro-hydraulic control circuit
US4526413A (en) * 1984-04-09 1985-07-02 Williams Howard G Remote controlled self-powered excavator apparatus
US4591158A (en) * 1981-09-22 1986-05-27 Ronald Samson Remotely controlled toy golfer
US5014596A (en) * 1989-06-28 1991-05-14 St Martin Louis G Remote control modification for manually controlled hydraulic systems
US5189940A (en) * 1991-09-13 1993-03-02 Caterpillar Inc. Method and apparatus for controlling an implement
US5199193A (en) * 1991-12-26 1993-04-06 International Remote Corporation Working machine
US5383390A (en) * 1993-06-28 1995-01-24 Caterpillar Inc. Multi-variable control of multi-degree of freedom linkages
US5470191A (en) * 1993-07-14 1995-11-28 Fuller Offshore Finance Corporation B.V. Multi purpose unloading arm
US5511457A (en) * 1994-11-04 1996-04-30 Caterpillar Inc. Steering control system for an autonomous machine
US5537818A (en) * 1994-10-31 1996-07-23 Caterpillar Inc. Method for controlling an implement of a work machine
US5642653A (en) * 1995-10-23 1997-07-01 Caterpillar Inc. Method and apparatus for providing detents on an electronic control handle
EP0821109A1 (fr) * 1996-07-25 1998-01-28 Société de Prestations Industrielles et de Montage (S.P.I.M.) Engin de génie pour travail en milieu hostile, bouée pour travaux maritimes et poste de commande associé
US5791229A (en) * 1996-11-13 1998-08-11 Samsung Heavy Industries Co., Ltd. Control device for travelling system in construction vehicles
AU716482B2 (en) * 1995-08-30 2000-02-24 William Michael Doherty Back-hoe and tipper
US6070516A (en) * 1995-04-10 2000-06-06 O & K Mining Gmbh Control for the scoop flap of a construction machine
US20020121790A1 (en) * 2001-02-20 2002-09-05 Robert Swift Portable remote hydraulic activator
US20030149518A1 (en) * 1999-04-23 2003-08-07 Brandt Kenneth A. Features of main control computer for a power machine
US20040211349A1 (en) * 2003-04-25 2004-10-28 Academy Of Applied Science, Inc. Underwater deposit-recovery scooper and specimen storage container
US20060045717A1 (en) * 2004-05-24 2006-03-02 Seymour Kerry R Retrofitted grapple saw and method for retrofitting hydraulic devices
US20060115354A1 (en) * 2004-11-30 2006-06-01 Glenn Prentice Lift truck load handler
US20100330897A1 (en) * 2009-06-24 2010-12-30 Blake Allan Massey Fresh air intake system for overburden drills
WO2012039600A1 (en) * 2010-09-21 2012-03-29 Eik Engineering Sdn. Bhd. Drive means for amphibious equipment
WO2015110834A1 (en) * 2014-01-24 2015-07-30 Ihc Engineering Business Ltd Trenching apparatus with levelling means
US10132336B1 (en) 2013-04-22 2018-11-20 Vecna Technologies, Inc. Actuator for rotating members
US10393076B1 (en) * 2018-08-30 2019-08-27 Toyota Motor North America, Inc. Tethered air intake snorkel
EP3591781A1 (en) 2015-02-10 2020-01-08 Cascade Corporation Wireless power transfer and communications for industrial equipment
USD891021S1 (en) * 2016-10-18 2020-07-21 Liebherr-Werk Nenzing Gmbh Dredger

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56130276U (zh) * 1980-03-04 1981-10-03
JPS6235261Y2 (zh) * 1980-09-25 1987-09-08
JPS58160467U (ja) * 1982-04-20 1983-10-26 三洋電機株式会社 電池充電器
DE4029021A1 (de) * 1990-09-13 1992-03-26 Krauss Maffei Ag Fahrzeug zum raeumen von algen in gewaessern
JP2518495B2 (ja) * 1992-09-03 1996-07-24 株式会社新潟鉄工所 ロ―タリ―式除雪車の無線式非常停止装置

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1097722A (en) * 1913-07-10 1914-05-26 Simon Lake Submarine dredging apparatus.
US2446149A (en) * 1947-06-18 1948-07-27 Bell Aircraft Corp Aircraft control system
US3086305A (en) * 1961-08-17 1963-04-23 Manitowoc Shipbuilding Inc Dredge
US3568454A (en) * 1968-10-18 1971-03-09 Japan Dev & Construction Apparatus for working under water
US3583585A (en) * 1969-06-10 1971-06-08 Tyrone Hydraulics Hydraulic control system for a backhoe
US3591936A (en) * 1969-01-15 1971-07-13 Koninkl Mij Tot Het Uitvoeren Submarine cutter dredger
US3631762A (en) * 1970-09-14 1972-01-04 Caterpillar Tractor Co Mechanism for controlling a vehicle from a remote location
US3672725A (en) * 1970-06-15 1972-06-27 Earl & Wright Ltd Deep sea mining method and apparatus
US3683521A (en) * 1970-03-05 1972-08-15 Ocean Science & Eng Submersible dredge
US3706142A (en) * 1969-09-17 1972-12-19 Shell Oil Co Submarine dredging apparatus

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1097722A (en) * 1913-07-10 1914-05-26 Simon Lake Submarine dredging apparatus.
US2446149A (en) * 1947-06-18 1948-07-27 Bell Aircraft Corp Aircraft control system
US3086305A (en) * 1961-08-17 1963-04-23 Manitowoc Shipbuilding Inc Dredge
US3568454A (en) * 1968-10-18 1971-03-09 Japan Dev & Construction Apparatus for working under water
US3591936A (en) * 1969-01-15 1971-07-13 Koninkl Mij Tot Het Uitvoeren Submarine cutter dredger
US3583585A (en) * 1969-06-10 1971-06-08 Tyrone Hydraulics Hydraulic control system for a backhoe
US3706142A (en) * 1969-09-17 1972-12-19 Shell Oil Co Submarine dredging apparatus
US3683521A (en) * 1970-03-05 1972-08-15 Ocean Science & Eng Submersible dredge
US3672725A (en) * 1970-06-15 1972-06-27 Earl & Wright Ltd Deep sea mining method and apparatus
US3631762A (en) * 1970-09-14 1972-01-04 Caterpillar Tractor Co Mechanism for controlling a vehicle from a remote location

Cited By (42)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4123858A (en) * 1971-07-06 1978-11-07 Batchelder George W Versatile submersible device for dredging or other underwater functions
US4096960A (en) * 1977-04-26 1978-06-27 Gilmore Charles L Haystack mover control means
US4289456A (en) * 1978-05-24 1981-09-15 Masamitsu Ishihara Underwater pump
EP0034857A1 (en) * 1980-02-26 1981-09-02 Jacobus Maria Josef Hofland Movable dredging device
US4591158A (en) * 1981-09-22 1986-05-27 Ronald Samson Remotely controlled toy golfer
WO1983002483A1 (en) * 1982-01-13 1983-07-21 Reeves, Jerry, L. Container handler with programmed electro-hydraulic control circuit
US4526413A (en) * 1984-04-09 1985-07-02 Williams Howard G Remote controlled self-powered excavator apparatus
US5014596A (en) * 1989-06-28 1991-05-14 St Martin Louis G Remote control modification for manually controlled hydraulic systems
US5189940A (en) * 1991-09-13 1993-03-02 Caterpillar Inc. Method and apparatus for controlling an implement
US5199193A (en) * 1991-12-26 1993-04-06 International Remote Corporation Working machine
US5383390A (en) * 1993-06-28 1995-01-24 Caterpillar Inc. Multi-variable control of multi-degree of freedom linkages
US5470191A (en) * 1993-07-14 1995-11-28 Fuller Offshore Finance Corporation B.V. Multi purpose unloading arm
US5537818A (en) * 1994-10-31 1996-07-23 Caterpillar Inc. Method for controlling an implement of a work machine
US5617723A (en) * 1994-10-31 1997-04-08 Caterpillar Inc. Method for controlling an implement of a work machine
US5511457A (en) * 1994-11-04 1996-04-30 Caterpillar Inc. Steering control system for an autonomous machine
US6070516A (en) * 1995-04-10 2000-06-06 O & K Mining Gmbh Control for the scoop flap of a construction machine
AU716482B2 (en) * 1995-08-30 2000-02-24 William Michael Doherty Back-hoe and tipper
US5642653A (en) * 1995-10-23 1997-07-01 Caterpillar Inc. Method and apparatus for providing detents on an electronic control handle
FR2751677A1 (fr) * 1996-07-25 1998-01-30 Soc D Prestations Ind Et De Mo Engin de genie pour travail en milieu hostile, bouee pour travaux maritimes, poste de commande associe a un engin ou a un ensemble bouee-engin
EP0821109A1 (fr) * 1996-07-25 1998-01-28 Société de Prestations Industrielles et de Montage (S.P.I.M.) Engin de génie pour travail en milieu hostile, bouée pour travaux maritimes et poste de commande associé
US5791229A (en) * 1996-11-13 1998-08-11 Samsung Heavy Industries Co., Ltd. Control device for travelling system in construction vehicles
US7142967B2 (en) * 1999-04-23 2006-11-28 Clark Equipment Company Features of main control computer for a power machine
US20030149518A1 (en) * 1999-04-23 2003-08-07 Brandt Kenneth A. Features of main control computer for a power machine
US7195296B2 (en) * 2001-02-20 2007-03-27 Robert Swift Portable remote hydraulic activator
US20020121790A1 (en) * 2001-02-20 2002-09-05 Robert Swift Portable remote hydraulic activator
US6832572B2 (en) * 2003-04-25 2004-12-21 Academy Of Applied Science Underwater deposit-recovery scooper and specimen storage container
US20040211349A1 (en) * 2003-04-25 2004-10-28 Academy Of Applied Science, Inc. Underwater deposit-recovery scooper and specimen storage container
US20060045717A1 (en) * 2004-05-24 2006-03-02 Seymour Kerry R Retrofitted grapple saw and method for retrofitting hydraulic devices
US20060115354A1 (en) * 2004-11-30 2006-06-01 Glenn Prentice Lift truck load handler
US8403618B2 (en) 2004-11-30 2013-03-26 Cascade Corporation Lift truck load handler
US20100330897A1 (en) * 2009-06-24 2010-12-30 Blake Allan Massey Fresh air intake system for overburden drills
US9770682B2 (en) * 2009-06-24 2017-09-26 Blake Allan Massey Fresh air intake system for overburden drills
AU2011306577B2 (en) * 2010-09-21 2014-06-26 Eik Engineering Sdn. Bhd. Drive means for amphibious equipment
US8894452B2 (en) 2010-09-21 2014-11-25 Eik Engineering Sdn. Bhd. Drive means for amphibious equipment
WO2012039600A1 (en) * 2010-09-21 2012-03-29 Eik Engineering Sdn. Bhd. Drive means for amphibious equipment
US10527072B1 (en) 2012-09-24 2020-01-07 Vecna Robotics, Inc. Actuator for rotating members
US10132336B1 (en) 2013-04-22 2018-11-20 Vecna Technologies, Inc. Actuator for rotating members
WO2015110834A1 (en) * 2014-01-24 2015-07-30 Ihc Engineering Business Ltd Trenching apparatus with levelling means
US9945097B2 (en) 2014-01-24 2018-04-17 Ihc Engineering Business Limited Trench apparatus with leveling means
EP3591781A1 (en) 2015-02-10 2020-01-08 Cascade Corporation Wireless power transfer and communications for industrial equipment
USD891021S1 (en) * 2016-10-18 2020-07-21 Liebherr-Werk Nenzing Gmbh Dredger
US10393076B1 (en) * 2018-08-30 2019-08-27 Toyota Motor North America, Inc. Tethered air intake snorkel

Also Published As

Publication number Publication date
FR2166032B1 (zh) 1980-03-07
FR2166032A1 (zh) 1973-08-10
JPS5238323B2 (zh) 1977-09-28
JPS4870302A (zh) 1973-09-22

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