FR2252976B1 - - Google Patents

Info

Publication number
FR2252976B1
FR2252976B1 FR7438864A FR7438864A FR2252976B1 FR 2252976 B1 FR2252976 B1 FR 2252976B1 FR 7438864 A FR7438864 A FR 7438864A FR 7438864 A FR7438864 A FR 7438864A FR 2252976 B1 FR2252976 B1 FR 2252976B1
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.)
Expired
Application number
FR7438864A
Other languages
French (fr)
Other versions
FR2252976A1 (enrdf_load_stackoverflow
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.)
Case LLC
Original Assignee
JI Case Co
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 JI Case Co filed Critical JI Case Co
Publication of FR2252976A1 publication Critical patent/FR2252976A1/fr
Application granted granted Critical
Publication of FR2252976B1 publication Critical patent/FR2252976B1/fr
Expired legal-status Critical Current

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
    • B66C23/702—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic with a jib extension boom
    • 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
    • B66C23/703—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic telescoped by flexible elements, e.g. cables, chains or bands

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)
FR7438864A 1973-11-29 1974-11-27 Expired FR2252976B1 (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00420011A US3844418A (en) 1973-11-29 1973-11-29 Telescoping jib assembly

Publications (2)

Publication Number Publication Date
FR2252976A1 FR2252976A1 (enrdf_load_stackoverflow) 1975-06-27
FR2252976B1 true FR2252976B1 (enrdf_load_stackoverflow) 1979-10-12

Family

ID=23664701

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7438864A Expired FR2252976B1 (enrdf_load_stackoverflow) 1973-11-29 1974-11-27

Country Status (8)

Country Link
US (1) US3844418A (enrdf_load_stackoverflow)
JP (1) JPS5085056A (enrdf_load_stackoverflow)
BR (1) BR7409542A (enrdf_load_stackoverflow)
CA (1) CA989354A (enrdf_load_stackoverflow)
DE (1) DE2453591A1 (enrdf_load_stackoverflow)
FR (1) FR2252976B1 (enrdf_load_stackoverflow)
GB (1) GB1423128A (enrdf_load_stackoverflow)
ZA (1) ZA746741B (enrdf_load_stackoverflow)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1602685A (en) * 1978-05-31 1981-11-11 Coles Cranes Ltd Mobile cranes
CA1143321A (en) * 1981-04-09 1983-03-22 Donald L. Smith Retractable conveyor belt
US4544321A (en) * 1983-10-26 1985-10-01 John Lanier Apparatus for moving a wheelchair into and out of an automobile
DE9311778U1 (de) * 1993-08-06 1994-12-08 Liebherr-Werk Ehingen Gmbh, 89584 Ehingen Mobilkran
FR2719574B1 (fr) * 1994-05-06 1996-07-26 Ppm Ensemble de prolongation pour flèche télescopique de grue mobile et grue mobile en faisant application.

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2896750A (en) * 1956-04-20 1959-07-28 Jay M Eitel Telescoping assembly
US3044312A (en) * 1960-05-20 1962-07-17 Curtiss Wright Corp Mechanism for converting rotary to linear movement
US3414086A (en) * 1966-08-19 1968-12-03 Eaton Yale & Towne Plural upright mechanism
US3534867A (en) * 1968-07-25 1970-10-20 Harnischfeger Corp Compensating boom hoist cable system for a telescopic boom for cranes or the like
US3565217A (en) * 1968-10-10 1971-02-23 Alaska Elevator Corp Offshore elevator improvements
US3732988A (en) * 1970-10-12 1973-05-15 Case Co J I Jib assembly for telescoping crane boom

Also Published As

Publication number Publication date
GB1423128A (en) 1976-01-28
ZA746741B (en) 1975-11-26
DE2453591A1 (de) 1975-06-05
JPS5085056A (enrdf_load_stackoverflow) 1975-07-09
CA989354A (en) 1976-05-18
US3844418A (en) 1974-10-29
BR7409542A (pt) 1976-05-25
FR2252976A1 (enrdf_load_stackoverflow) 1975-06-27

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Legal Events

Date Code Title Description
ST Notification of lapse