FI56515B - Lyftbom - Google Patents

Lyftbom

Info

Publication number
FI56515B
FI56515B FI2883/73A FI288373A FI56515B FI 56515 B FI56515 B FI 56515B FI 2883/73 A FI2883/73 A FI 2883/73A FI 288373 A FI288373 A FI 288373A FI 56515 B FI56515 B FI 56515B
Authority
FI
Finland
Prior art keywords
lyftbom
Prior art date
Application number
FI2883/73A
Other languages
English (en)
Other versions
FI56515C (fi
Inventor
Roger L Johnston
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 FI56515B publication Critical patent/FI56515B/fi
Application granted granted Critical
Publication of FI56515C publication Critical patent/FI56515C/fi

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
    • B66C23/64—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
    • 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
FI2883/73A 1972-09-18 1973-09-17 Lyftbom FI56515C (fi)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US29027572 1972-09-18
US00290275A US3807108A (en) 1972-09-18 1972-09-18 Structural design of boom section with inverted {37 a{38 {11 frame cross-section

Publications (2)

Publication Number Publication Date
FI56515B true FI56515B (fi) 1979-10-31
FI56515C FI56515C (fi) 1980-02-11

Family

ID=23115266

Family Applications (1)

Application Number Title Priority Date Filing Date
FI2883/73A FI56515C (fi) 1972-09-18 1973-09-17 Lyftbom

Country Status (15)

Country Link
US (1) US3807108A (fi)
JP (1) JPS4970361A (fi)
BR (1) BR7307174D0 (fi)
CA (1) CA985219A (fi)
CH (1) CH554294A (fi)
DD (1) DD107241A5 (fi)
DE (1) DE2346003C2 (fi)
ES (1) ES418851A1 (fi)
FI (1) FI56515C (fi)
FR (1) FR2200186B1 (fi)
GB (1) GB1405386A (fi)
IT (1) IT994276B (fi)
NL (1) NL7312849A (fi)
SE (1) SE394103B (fi)
ZA (1) ZA737241B (fi)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2255251B1 (fi) * 1973-12-20 1976-11-19 Creusot Loire
US3954193A (en) * 1975-02-07 1976-05-04 Walter Kidde & Company, Inc. Apparatus and method for transferring a crane boom assembly from a crane carrier to an independent transport vehicle
US4003168A (en) * 1975-06-27 1977-01-18 Walter Kidde & Company, Inc. Crane boom of trapezoidal boom sections having reinforcing rings
SE410410B (sv) * 1976-06-23 1979-10-15 Inst Elektroswarki Patona Anlaeggning foer framstaellning av metallgoet med stor vikt genom elektroslaggraffinering
NO140922C (no) * 1976-09-03 1979-12-12 Nor Mar A S Teleskoparm.
US4125974A (en) * 1977-07-08 1978-11-21 Harnischfeger Corporation Control system for telescopic boom
US4112649A (en) * 1977-08-26 1978-09-12 Harnischfeger Corporation Boom section for telescopic crane boom
US4238911A (en) * 1978-09-29 1980-12-16 Frosch Robert A Telescoping columns
GB9326347D0 (en) * 1993-12-23 1994-02-23 Grove Europ Limited Improvements in and relating to telescopic booms
DE4427192C2 (de) * 1994-08-01 1997-07-10 Franz Ehrenleitner Geschlossene Profile
US6253502B1 (en) * 1998-08-25 2001-07-03 George F. Layton Van with extensible boom
US6336565B1 (en) * 1998-12-01 2002-01-08 Joseph J. Merkel Articulating truss boom
US6244450B1 (en) * 1999-10-13 2001-06-12 Elliott Equipment Company Method and apparatus for telescoping boom with hydraulic extension actuators
CA2331105A1 (en) * 2000-01-21 2001-07-21 National Crane Corporation Anti-two block wire internal to crane telescopic boom
US20090019794A1 (en) * 2006-03-30 2009-01-22 Oscar Centelles Vilalta Device for collapsing towers in movable structures
US8678210B1 (en) 2010-11-17 2014-03-25 Link-Belt Construction Equipment Co., L.P., Lllp Telescoping boom assembly with base section having primary shell and secondary formed shell
US10889473B2 (en) * 2016-12-09 2021-01-12 Fassi Gru S.P.A. Load crane main boom
DE102017127973A1 (de) 2017-11-27 2019-05-29 Liebherr-Werk Ehingen Gmbh Teleskopausleger für einen Kran und Kran mit einem entsprechenden Teleskopausleger
IT201800004537A1 (it) * 2018-04-16 2019-10-16 Piattaforma aerea

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3315821A (en) * 1966-03-15 1967-04-25 Grove Mfg Co Four-section fully hydraulically operated boom
US3243052A (en) * 1965-04-08 1966-03-29 Grove Mfg Co Telescopic crane boom with longitudinally extending cylinder connector
DE1281651C2 (de) * 1966-06-30 1975-02-13 Leo Gottwald KG, 4000 Düsseldorf Teleskopartig ein- und ausfahrbarer kranausleger
US3669281A (en) * 1967-06-05 1972-06-13 Frank G Woodside Vehicle mounted hoist
US3624979A (en) * 1969-08-25 1971-12-07 Daniel F Przybylski Telescoping hydraulic cylinder arrangement for multiple section extensible booms
US3708937A (en) * 1970-09-28 1973-01-09 Kidde & Co Walter Trapezoidal telescoping crane boom
US3719403A (en) * 1970-11-17 1973-03-06 Kidde & Co Walter Crane boom having wear pads
US3719404A (en) * 1970-11-17 1973-03-06 Kidde & Co Walter Crane boom having universally swiveled wear pads
DE2103570C3 (de) * 1971-01-26 1974-03-07 Leo Gottwald Kg, 4000 Duesseldorf Teleskopierbarer Kranausleger in Rahmenbauwei se
DE2108227C3 (de) * 1971-02-20 1975-02-06 Fa. Richard Bergner, 8540 Schwabach Aufhängung eines Luftkabels an einem an Tragmasten befestigten Erdseil einer Freileitung als Tragseil, an dem das Luftkabel girlandenartig befestigt ist
US3698569A (en) * 1971-03-22 1972-10-17 Case Co J I Mobile crane with jib extension

Also Published As

Publication number Publication date
SE394103B (sv) 1977-06-06
ES418851A1 (es) 1976-02-01
US3807108A (en) 1974-04-30
BR7307174D0 (pt) 1974-08-15
ZA737241B (en) 1974-10-30
FR2200186A1 (fi) 1974-04-19
CA985219A (en) 1976-03-09
CH554294A (de) 1974-09-30
IT994276B (it) 1975-10-20
JPS4970361A (fi) 1974-07-08
DE2346003A1 (de) 1974-05-09
FR2200186B1 (fi) 1976-12-03
GB1405386A (en) 1975-09-10
DE2346003C2 (de) 1983-11-17
NL7312849A (fi) 1974-03-20
FI56515C (fi) 1980-02-11
DD107241A5 (fi) 1974-07-20

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