NL7600667A - Hydraulically telescoping crane jib - has ram between base and middle section and bar from base to end - Google Patents

Hydraulically telescoping crane jib - has ram between base and middle section and bar from base to end

Info

Publication number
NL7600667A
NL7600667A NL7600667A NL7600667A NL7600667A NL 7600667 A NL7600667 A NL 7600667A NL 7600667 A NL7600667 A NL 7600667A NL 7600667 A NL7600667 A NL 7600667A NL 7600667 A NL7600667 A NL 7600667A
Authority
NL
Netherlands
Prior art keywords
base
section
ram
middle section
bar
Prior art date
Application number
NL7600667A
Other languages
Dutch (nl)
Other versions
NL159065B (en
Original Assignee
Grove Mfg 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
Priority claimed from US446602A external-priority patent/US3243052A/en
Priority claimed from NL6600760A external-priority patent/NL6600760A/xx
Priority claimed from US534538A external-priority patent/US3315821A/en
Application filed by Grove Mfg Co filed Critical Grove Mfg Co
Publication of NL7600667A publication Critical patent/NL7600667A/en
Publication of NL159065B publication Critical patent/NL159065B/en

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
    • B66C23/705—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)
  • Jib Cranes (AREA)

Abstract

The jib comprises a base and a middle section and a hand-operated end section and a double-acting ram hinging at one end at the inner end of the base section. The other end of the ram is coupled to the middle section so as to extend and retract it in relation to the base section. There is a first connection on the hand-operated end section at the outer end, and an extension bar fits between this and a second connection on the outer end of the base section after the middle section has been extended from the base section. This extends the end section from the middle one whenever the latter is retracted into the base section.
NL7600667.A 1965-04-08 1976-01-22 PROCEDURE FOR SLIDING OUT AN END PART WITH REGARD TO OTHER PARTS OF A MULTI-PIECE HYDRAULIC TELESCOPABLE CRANE CONSTRUCTION AND A CRANE ARM CONSTRUCTION. NL159065B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US446602A US3243052A (en) 1965-04-08 1965-04-08 Telescopic crane boom with longitudinally extending cylinder connector
NL6600760A NL6600760A (en) 1965-04-08 1966-01-20
US534538A US3315821A (en) 1966-03-15 1966-03-15 Four-section fully hydraulically operated boom

Publications (2)

Publication Number Publication Date
NL7600667A true NL7600667A (en) 1976-04-29
NL159065B NL159065B (en) 1979-01-15

Family

ID=27351355

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7600667.A NL159065B (en) 1965-04-08 1976-01-22 PROCEDURE FOR SLIDING OUT AN END PART WITH REGARD TO OTHER PARTS OF A MULTI-PIECE HYDRAULIC TELESCOPABLE CRANE CONSTRUCTION AND A CRANE ARM CONSTRUCTION.

Country Status (1)

Country Link
NL (1) NL159065B (en)

Also Published As

Publication number Publication date
NL159065B (en) 1979-01-15

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Legal Events

Date Code Title Description
V4 Lapsed because of reaching the maximum lifetime of a patent
NL80 Abbreviated name of patent owner mentioned of already nullified patent

Owner name: GROVE MANUF