CA1040595A - Hydraulic systems for two speed lifting - Google Patents

Hydraulic systems for two speed lifting

Info

Publication number
CA1040595A
CA1040595A CA257,917A CA257917A CA1040595A CA 1040595 A CA1040595 A CA 1040595A CA 257917 A CA257917 A CA 257917A CA 1040595 A CA1040595 A CA 1040595A
Authority
CA
Canada
Prior art keywords
fluid
load
piston
reservoir
working
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
Application number
CA257,917A
Other languages
English (en)
French (fr)
Inventor
Walter J. Pleier
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.)
Eaton Corp
Original Assignee
Eaton Corp
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 Eaton Corp filed Critical Eaton Corp
Application granted granted Critical
Publication of CA1040595A publication Critical patent/CA1040595A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075—Constructional features or details
    • B66F9/20—Means for actuating or controlling masts, platforms, or forks
    • B66F9/22—Hydraulic devices or systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Forklifts And Lifting Vehicles (AREA)
CA257,917A 1975-08-20 1976-07-27 Hydraulic systems for two speed lifting Expired CA1040595A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/606,034 US4023650A (en) 1975-08-20 1975-08-20 Hydraulic systems for two speed lifting

Publications (1)

Publication Number Publication Date
CA1040595A true CA1040595A (en) 1978-10-17

Family

ID=24426239

Family Applications (1)

Application Number Title Priority Date Filing Date
CA257,917A Expired CA1040595A (en) 1975-08-20 1976-07-27 Hydraulic systems for two speed lifting

Country Status (6)

Country Link
US (1) US4023650A (OSRAM)
JP (1) JPS5225363A (OSRAM)
CA (1) CA1040595A (OSRAM)
DE (1) DE2637347A1 (OSRAM)
FR (1) FR2321448A1 (OSRAM)
GB (1) GB1513604A (OSRAM)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4168861A (en) * 1978-02-06 1979-09-25 Carroll Ollie J Dump-hoist conversion system
US4187763A (en) * 1978-03-31 1980-02-12 Gould Inc. Overload relief valve
US4476761A (en) * 1982-10-21 1984-10-16 Champion International Corporation Paper roll splitter attachment for fork lift truck
JPS6198798U (OSRAM) * 1984-12-01 1986-06-24
US5201629A (en) * 1991-04-09 1993-04-13 Clark Material Handling Company Container transporter
DE4317397A1 (de) * 1993-05-25 1994-12-01 Linde Ag Flurförderzeug mit einem Lastaufnahmemittel und zwei parallel geschalteten Hubzylindern
GB9405861D0 (en) * 1994-03-24 1994-05-11 Wilson Frederick G Improved mast for demountable fork-lift truck
US6135694A (en) * 1997-09-30 2000-10-24 Crown Equipment Corporation Travel and fork lowering speed control based on fork load weight/tilt cylinder operation
US6022183A (en) * 1998-07-22 2000-02-08 Steel Technologies, Inc. Machine and method for lifting massive objects
CA2290117C (en) * 1999-11-15 2005-05-10 Wheeltronic Ltd. Equalizer
DE10125351A1 (de) * 2001-05-23 2002-11-28 Still Gmbh Hydraulische Anordnung für die Hubzylinder eines Flurförderzeugs
DE10349123A1 (de) * 2003-10-22 2005-05-19 Still Wagner Gmbh & Co Kg Hubwerk, insbesondere für einen Hochregalstapler
US8126592B2 (en) * 2008-10-14 2012-02-28 Boston Dynamics, Inc. Actuator system

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1944351A (en) * 1932-03-04 1934-01-23 Hell Co Hoist mechanism
US2456320A (en) * 1947-02-24 1948-12-14 Ross Carrier Company Lift truck
US2588285A (en) * 1950-05-27 1952-03-04 Harold C Schott Air bleeder for vehicle lifts
US3186309A (en) * 1961-12-18 1965-06-01 Clark Equipment Co Dual speed lifter for material handling machines
US3541928A (en) * 1968-03-28 1970-11-24 Huster Co Lift truck upright
US3608434A (en) * 1970-01-13 1971-09-28 Us Army Dual area hydraulic actuator
US3584536A (en) * 1971-01-13 1971-06-15 Benny M Hillberry Multiple area hydraulic actuator
US3734464A (en) * 1971-11-17 1973-05-22 S Bushnell Control system for multi-stage lift

Also Published As

Publication number Publication date
JPS5225363A (en) 1977-02-25
FR2321448A1 (fr) 1977-03-18
US4023650A (en) 1977-05-17
FR2321448B3 (OSRAM) 1979-05-11
GB1513604A (en) 1978-06-07
DE2637347A1 (de) 1977-03-03

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