EP0943755A3 - Extendable arm - Google Patents

Extendable arm Download PDF

Info

Publication number
EP0943755A3
EP0943755A3 EP99104012A EP99104012A EP0943755A3 EP 0943755 A3 EP0943755 A3 EP 0943755A3 EP 99104012 A EP99104012 A EP 99104012A EP 99104012 A EP99104012 A EP 99104012A EP 0943755 A3 EP0943755 A3 EP 0943755A3
Authority
EP
European Patent Office
Prior art keywords
extendable arm
approach
spacing
structures
pivoting
Prior art date
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.)
Withdrawn
Application number
EP99104012A
Other languages
German (de)
French (fr)
Other versions
EP0943755A2 (en
Inventor
Massimo Salardi
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0943755A2 publication Critical patent/EP0943755A2/en
Publication of EP0943755A3 publication Critical patent/EP0943755A3/en
Withdrawn legal-status Critical Current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
    • B66C23/68—Jibs foldable or otherwise adjustable in configuration

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manipulator (AREA)
  • Tents Or Canopies (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Seal Device For Vehicle (AREA)
  • Massaging Devices (AREA)

Abstract

The extendable arm comprises two structures (2,3) whose mutual distance can vary, each structure (2,3) being constituted by at least three corner elements (4,5), each of which has two angled pivoting elements (6,7) for pivoting the corresponding ends (10) of at least three pairs of mutually articulated linkage members (11,12) which substantially constitute at least three pantograph-type couplings which are mutually connected in space, the approach or spacing of two of the corner elements (4,5) arranged on one of the diagonals of one of the structures (2,3) being adapted to determine the spacing or approach of the other structure and the simultaneous extension or retraction of the arm (1).
EP99104012A 1998-03-17 1999-03-12 Extendable arm Withdrawn EP0943755A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMO980060 1998-03-17
ITMO980060 IT1304319B1 (en) 1998-03-17 1998-03-17 EXTENDABLE ARM

Publications (2)

Publication Number Publication Date
EP0943755A2 EP0943755A2 (en) 1999-09-22
EP0943755A3 true EP0943755A3 (en) 2000-06-07

Family

ID=11386599

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99104012A Withdrawn EP0943755A3 (en) 1998-03-17 1999-03-12 Extendable arm

Country Status (2)

Country Link
EP (1) EP0943755A3 (en)
IT (1) IT1304319B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1304319B1 (en) 1998-03-17 2001-03-15 Massimo Salardi EXTENDABLE ARM
CN110963426A (en) * 2018-09-30 2020-04-07 徐工集团工程机械股份有限公司 Foldable deformation truss arm section, truss arm and crane

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1511679A (en) * 1922-06-23 1924-10-14 Schwarz Carl Extension tower
US2625443A (en) * 1949-09-27 1953-01-13 Sensenbaugh Andrew Elevating scaffold
FR1419013A (en) * 1964-10-16 1965-11-26 Gabriel Jardillier Ets Pylon
FR2577584A1 (en) * 1985-02-20 1986-08-22 Sarazin Maurice Length-adjustable rigid structure, particularly for an oil rig
EP0219201A2 (en) * 1985-08-16 1987-04-22 Silk Cut Flowers Limited A collapsible display stand
US4718519A (en) * 1985-10-21 1988-01-12 Barker Sidney L High lift scissor jack
EP0884425A1 (en) * 1997-06-12 1998-12-16 Gilberto Braghieri Vertical extension collapsible bearing structure, particularly for platforms and floor boarding

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1304319B1 (en) 1998-03-17 2001-03-15 Massimo Salardi EXTENDABLE ARM

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1511679A (en) * 1922-06-23 1924-10-14 Schwarz Carl Extension tower
US2625443A (en) * 1949-09-27 1953-01-13 Sensenbaugh Andrew Elevating scaffold
FR1419013A (en) * 1964-10-16 1965-11-26 Gabriel Jardillier Ets Pylon
FR2577584A1 (en) * 1985-02-20 1986-08-22 Sarazin Maurice Length-adjustable rigid structure, particularly for an oil rig
EP0219201A2 (en) * 1985-08-16 1987-04-22 Silk Cut Flowers Limited A collapsible display stand
US4718519A (en) * 1985-10-21 1988-01-12 Barker Sidney L High lift scissor jack
EP0884425A1 (en) * 1997-06-12 1998-12-16 Gilberto Braghieri Vertical extension collapsible bearing structure, particularly for platforms and floor boarding

Also Published As

Publication number Publication date
EP0943755A2 (en) 1999-09-22
ITMO980060A1 (en) 1999-09-17
IT1304319B1 (en) 2001-03-15

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