IT990111B - IMPROVEMENT IN HYDRAULIC CYLINDERS SUITABLE IN PARTICULAR FOR CRANES AND SIMILAR - Google Patents

IMPROVEMENT IN HYDRAULIC CYLINDERS SUITABLE IN PARTICULAR FOR CRANES AND SIMILAR

Info

Publication number
IT990111B
IT990111B IT51781/73A IT5178173A IT990111B IT 990111 B IT990111 B IT 990111B IT 51781/73 A IT51781/73 A IT 51781/73A IT 5178173 A IT5178173 A IT 5178173A IT 990111 B IT990111 B IT 990111B
Authority
IT
Italy
Prior art keywords
cranes
improvement
similar
hydraulic cylinders
cylinders suitable
Prior art date
Application number
IT51781/73A
Other languages
Italian (it)
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
Application granted granted Critical
Publication of IT990111B publication Critical patent/IT990111B/en

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)
  • Fluid-Pressure Circuits (AREA)
  • Control And Safety Of Cranes (AREA)
IT51781/73A 1972-08-14 1973-08-01 IMPROVEMENT IN HYDRAULIC CYLINDERS SUITABLE IN PARTICULAR FOR CRANES AND SIMILAR IT990111B (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
IT990111B true IT990111B (en) 1975-06-20

Family

ID=23073265

Family Applications (1)

Application Number Title Priority Date Filing Date
IT51781/73A IT990111B (en) 1972-08-14 1973-08-01 IMPROVEMENT IN HYDRAULIC CYLINDERS SUITABLE IN PARTICULAR FOR CRANES AND SIMILAR

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)

Families Citing this family (6)

* 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
CN102425585A (en) * 2011-12-07 2012-04-25 中联重科股份有限公司 Closed hydraulic system of pumping device and control method thereof

Family Cites Families (6)

* 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
US3371799A (en) * 1967-03-01 1968-03-05 Baldwin Lima Hamilton Corp Telescopic boom angle control system
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
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

Also Published As

Publication number Publication date
BR7306190D0 (en) 1974-06-27
DE2340431A1 (en) 1974-02-28
FR2196442B1 (en) 1976-11-19
GB1416212A (en) 1975-12-03
JPS4951476A (en) 1974-05-18
FR2196442A1 (en) 1974-03-15
US3777899A (en) 1973-12-11

Similar Documents

Publication Publication Date Title
SE403175B (en) HYDRAULIC PISTON-CYLINDER ENGINE
IT984245B (en) IMPROVEMENT IN CARDIAC MARKERS
IT965256B (en) IMPROVEMENT IN HYDRAULIC MECHANICAL FORCE TRANSDUCERS
IT981975B (en) IMPROVEMENT IN AIRCRAFT TIRES
IT979735B (en) IMPROVEMENT IN CONTINUOUS CASTING PROCEDURES AND DEVICES
IT994737B (en) IMPROVEMENT IN HOMOCINETIC JOINTS
IT994276B (en) IMPROVEMENT OF TELESCO PICI BOOMS IN PARTICULAR FOR CRANES AND SIMILAR
IT994275B (en) IMPROVEMENT IN TELESCOPE ARMS IN PARTICULAR FOR CRANES AND SIMILAR
IT976762B (en) IMPROVEMENT IN CARDIAC MARKERS
IT977184B (en) IMPROVEMENT IN PULSE RADAR MODULATORS
IT990895B (en) COMPOSITE CYLINDER
BE808403A (en) GANTRY CRANES
IT985075B (en) IMPROVEMENT IN GRANULATORS
IT977436B (en) IMPROVEMENT IN CARDIAC MARKERS
IT990111B (en) IMPROVEMENT IN HYDRAULIC CYLINDERS SUITABLE IN PARTICULAR FOR CRANES AND SIMILAR
DK144589C (en) TRAILING AND LIFTING DEVICE
IT990092B (en) IMPROVEMENT IN CARBURETOR AND SIMILAR CONTROL DEVICES
IT957845B (en) IMPROVEMENT IN VIBRATORS
IT985676B (en) IMPROVEMENT IN EMPORIZERS
SE392607B (en) DOUBLE TRAILER CRANE
IT974422B (en) IMPROVEMENT IN CARDIAC MARKERS
IT990087B (en) IMPROVEMENT IN HYDRAULIC TRANSDUCERS
IT999195B (en) TRAILER CRANE
IT996341B (en) IMPROVEMENT IN EXPANSION BOLTS
NO140924C (en) HYDRAULIC OR PNEUMATIC DEVICE