IT8321872A0 - Braccio sostenuto mediante cavi con tratti di cavo fissi e dilunghezza variabile. - Google Patents

Braccio sostenuto mediante cavi con tratti di cavo fissi e dilunghezza variabile.

Info

Publication number
IT8321872A0
IT8321872A0 IT8321872A IT2187283A IT8321872A0 IT 8321872 A0 IT8321872 A0 IT 8321872A0 IT 8321872 A IT8321872 A IT 8321872A IT 2187283 A IT2187283 A IT 2187283A IT 8321872 A0 IT8321872 A0 IT 8321872A0
Authority
IT
Italy
Prior art keywords
cables
variable length
cable sections
fixed cable
arm supported
Prior art date
Application number
IT8321872A
Other languages
English (en)
Other versions
IT1169446B (it
Inventor
Bruce William White
Original Assignee
Chicago Illinois U S A A
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 Chicago Illinois U S A A filed Critical Chicago Illinois U S A A
Publication of IT8321872A0 publication Critical patent/IT8321872A0/it
Application granted granted Critical
Publication of IT1169446B publication Critical patent/IT1169446B/it

Links

Classifications

    • 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
    • B66C23/82—Luffing gear

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)
IT21872/83A 1982-06-30 1983-06-30 Braccio sostenuto mediante cavi con tratti di cavo fissi e di lunghezza variabile IT1169446B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/393,983 US4467928A (en) 1982-06-30 1982-06-30 Pendant supported boom with fixed and live pendant portions

Publications (2)

Publication Number Publication Date
IT8321872A0 true IT8321872A0 (it) 1983-06-30
IT1169446B IT1169446B (it) 1987-05-27

Family

ID=23557052

Family Applications (1)

Application Number Title Priority Date Filing Date
IT21872/83A IT1169446B (it) 1982-06-30 1983-06-30 Braccio sostenuto mediante cavi con tratti di cavo fissi e di lunghezza variabile

Country Status (4)

Country Link
US (1) US4467928A (it)
CA (1) CA1223230A (it)
IT (1) IT1169446B (it)
WO (1) WO1984000151A1 (it)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5240129A (en) * 1990-06-04 1993-08-31 Link-Belt Construction Equip. Co. Heavy duty crane with self-retracting/erecting live mast
US6557640B1 (en) 1998-12-07 2003-05-06 Shell Oil Company Lubrication and self-cleaning system for expansion mandrel
US6702132B1 (en) 1999-03-19 2004-03-09 Link-Belt Construction Equipment Company, L.P., Lllp Crane self-assembly system
WO2001072624A1 (en) 2000-03-28 2001-10-04 Higgins David J Telescoping boom
US6941666B2 (en) * 2003-10-01 2005-09-13 William J. Parish Forklift mast position indicator
CN101700856B (zh) * 2009-10-30 2013-04-24 上海三一科技有限公司 履带起重机桅杆收放自动控制液压系统
AU2012376525A1 (en) * 2012-04-13 2014-10-02 Caterpillar Global Mining Llc Mast head for a dragline

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2868392A (en) * 1956-09-28 1959-01-13 Glenn L Poffenberger Boom structure
US2999600A (en) * 1959-09-04 1961-09-12 Gates Earl Compensating telescopic boom
US3187906A (en) * 1963-01-25 1965-06-08 Koehring Co Crane with pneumatically extensible gantry mast
US3362022A (en) * 1965-04-22 1968-01-02 Bucyrus Erie Co Safe load warning system
US3308967A (en) * 1965-10-06 1967-03-14 Byron F Barkley Extensible boom crane
US3371799A (en) * 1967-03-01 1968-03-05 Baldwin Lima Hamilton Corp Telescopic boom angle control system
US3465899A (en) * 1967-08-03 1969-09-09 Bucyrus Erie Co Telescoping boom for hydraulic crane
FR1548578A (it) * 1967-10-25 1968-12-06
GB1297961A (it) * 1969-02-12 1972-11-29
US3648850A (en) * 1970-03-25 1972-03-14 Tyee Construction Co Crane with telescopic boom
FR2192972B2 (it) * 1972-07-21 1976-01-16 Richier Fr
US3856151A (en) * 1973-11-29 1974-12-24 Case Co J I Telescopic boom and jib assembly with means to maintain a predetermined angular position therebetween
DD112631A1 (it) * 1974-04-15 1975-04-20
US4053058A (en) * 1976-05-27 1977-10-11 Fmc Corporation Suspended extensible boom
GB1594096A (en) * 1976-11-11 1981-07-30 Coles Cranes Ltd Telescopic booms
US4133411A (en) * 1977-02-11 1979-01-09 Chamberlain Manufacturing Corporation Extensible boom
US4352434A (en) * 1980-05-01 1982-10-05 Fmc Corporation Pendant supported hydraulic extensible boom
US4336889A (en) * 1980-10-27 1982-06-29 Fmc Corporation Ring supported truck crane and method of setting up

Also Published As

Publication number Publication date
US4467928A (en) 1984-08-28
IT1169446B (it) 1987-05-27
WO1984000151A1 (en) 1984-01-19
CA1223230A (en) 1987-06-23

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Legal Events

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TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19930608