FR2196442A1 - - Google Patents

Info

Publication number
FR2196442A1
FR2196442A1 FR7329739A FR7329739A FR2196442A1 FR 2196442 A1 FR2196442 A1 FR 2196442A1 FR 7329739 A FR7329739 A FR 7329739A FR 7329739 A FR7329739 A FR 7329739A FR 2196442 A1 FR2196442 A1 FR 2196442A1
Authority
FR
France
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.)
Granted
Application number
FR7329739A
Other languages
French (fr)
Other versions
FR2196442B1 (en
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.)
Harnischfeger Corp
Original Assignee
Harnischfeger 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 Harnischfeger Corp filed Critical Harnischfeger Corp
Publication of FR2196442A1 publication Critical patent/FR2196442A1/fr
Application granted granted Critical
Publication of FR2196442B1 publication Critical patent/FR2196442B1/fr
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • F15B11/20—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors controlling several interacting or sequentially-operating members
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62—Constructional features or details
    • B66C23/64—Jibs
    • B66C23/70—Jibs constructed of sections adapted to be assembled to form jibs or various lengths
    • B66C23/701—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic
    • B66C23/705—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic telescoped by hydraulic jacks

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Jib Cranes (AREA)
  • Control And Safety Of Cranes (AREA)
  • Fluid-Pressure Circuits (AREA)
FR7329739A 1972-08-14 1973-08-14 Expired FR2196442B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US28048272A 1972-08-14 1972-08-14

Publications (2)

Publication Number Publication Date
FR2196442A1 true FR2196442A1 (en) 1974-03-15
FR2196442B1 FR2196442B1 (en) 1976-11-19

Family

ID=23073265

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7329739A Expired FR2196442B1 (en) 1972-08-14 1973-08-14

Country Status (7)

Country Link
US (1) US3777899A (en)
JP (1) JPS4951476A (en)
BR (1) BR7306190D0 (en)
DE (1) DE2340431A1 (en)
FR (1) FR2196442B1 (en)
GB (1) GB1416212A (en)
IT (1) IT990111B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102425585A (en) * 2011-12-07 2012-04-25 中联重科股份有限公司 Closed hydraulic system for pumping device, and control method for closed hydraulic system

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4102250A (en) * 1976-08-16 1978-07-25 Caterpillar Tractor Co. Load check and bypass valve
GB2268780A (en) * 1992-06-24 1994-01-19 Gullick Dobson Ltd Mining apparatus
US5927520A (en) * 1995-10-06 1999-07-27 Kidde Industries, Inc. Electro-hydraulic operating system for extensible boom crane
US5937646A (en) * 1997-07-10 1999-08-17 Mi-Jack Products Hydraulic charge boost system for a gantry crane
CN102297180B (en) * 2011-08-09 2013-01-02 三一重工股份有限公司 Supporting leg locking system and mobile engineering machinery

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1549661A (en) * 1967-03-01 1968-12-13
DE1949712A1 (en) * 1968-11-19 1970-06-11 Ind Karl Marx Stadt Veb Hydraulic control device
US3641876A (en) * 1969-11-12 1972-02-15 American Hoist & Derrick Co Two-speed hydraulic control system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2768500A (en) * 1955-05-20 1956-10-30 Oilgear Co Hydraulic drive
US3605561A (en) * 1969-12-22 1971-09-20 Pettibone Corp One handle sequence selecting valving for crowd cylinders
US3721350A (en) * 1970-02-12 1973-03-20 Fmc Corp Boom extension control system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1549661A (en) * 1967-03-01 1968-12-13
DE1949712A1 (en) * 1968-11-19 1970-06-11 Ind Karl Marx Stadt Veb Hydraulic control device
US3641876A (en) * 1969-11-12 1972-02-15 American Hoist & Derrick Co Two-speed hydraulic control system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102425585A (en) * 2011-12-07 2012-04-25 中联重科股份有限公司 Closed hydraulic system for pumping device, and control method for closed hydraulic system

Also Published As

Publication number Publication date
US3777899A (en) 1973-12-11
GB1416212A (en) 1975-12-03
DE2340431A1 (en) 1974-02-28
FR2196442B1 (en) 1976-11-19
IT990111B (en) 1975-06-20
BR7306190D0 (en) 1974-06-27
JPS4951476A (en) 1974-05-18

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Legal Events

Date Code Title Description
ST Notification of lapse