GB1297961A - - Google Patents

Info

Publication number
GB1297961A
GB1297961A GB764569A GB1297961DA GB1297961A GB 1297961 A GB1297961 A GB 1297961A GB 764569 A GB764569 A GB 764569A GB 1297961D A GB1297961D A GB 1297961DA GB 1297961 A GB1297961 A GB 1297961A
Authority
GB
United Kingdom
Prior art keywords
spring
section
detent
hook
cable
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.)
Expired
Application number
GB764569A
Other languages
English (en)
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 filed Critical
Publication of GB1297961A publication Critical patent/GB1297961A/en
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
    • B66C23/708—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic locking devices for telescopic jibs

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)
GB764569A 1969-02-12 1969-02-12 Expired GB1297961A (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB764569 1969-02-12

Publications (1)

Publication Number Publication Date
GB1297961A true GB1297961A (it) 1972-11-29

Family

ID=9837085

Family Applications (1)

Application Number Title Priority Date Filing Date
GB764569A Expired GB1297961A (it) 1969-02-12 1969-02-12

Country Status (5)

Country Link
US (1) US3727359A (it)
DE (1) DE2006429A1 (it)
FR (1) FR2033326B1 (it)
GB (1) GB1297961A (it)
NL (1) NL7001949A (it)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2446907A1 (fr) * 1979-01-18 1980-08-14 Telecommunications Internal Ci Perfectionnement aux pylones telescopiques
US4352434A (en) * 1980-05-01 1982-10-05 Fmc Corporation Pendant supported hydraulic extensible boom
US4492311A (en) * 1981-08-17 1985-01-08 Fmc Corporation Coupling and latching mechanism for extensible boom
US4489838A (en) * 1981-08-17 1984-12-25 Fmc Corporation Low droop multi-part pendant supported boom
US4592474A (en) * 1981-08-17 1986-06-03 Fmc Corporation Coupling and latching mechanism for extensible boom
US4491228A (en) * 1982-06-30 1985-01-01 Fmc Corporation Floating sheave type pendant pay-out system for pendant supported boom
US4557391A (en) * 1982-06-30 1985-12-10 Fmc Corporation Method of controlling the angle of a pivotal boom with extensible sections
US4460098A (en) * 1982-06-30 1984-07-17 Fmc Corporation Pendant control system for pendant supported boom
US4544071A (en) * 1982-06-30 1985-10-01 Fmc Corporation External pendant pay-out system with anti-droop control
US4467928A (en) * 1982-06-30 1984-08-28 Fmc Corporation Pendant supported boom with fixed and live pendant portions
US4492312A (en) * 1982-06-30 1985-01-08 Fmc Corporation External pendant pay-out system with anti-droop control
GB9204305D0 (en) * 1992-02-28 1992-04-08 Hamble Aerostructures Locking device
DE10022373B4 (de) * 2000-05-08 2005-11-24 Grove U.S. Llc Verriegelungs- und Betätigungseinheit für seitliche Auslegerverriegelung
DE10048224B4 (de) * 2000-09-21 2005-06-02 Terex-Demag Gmbh & Co. Kg Verriegelungseinheit für einen Teleskopausleger eines Krans
US20100212236A1 (en) * 2005-07-15 2010-08-26 Bourdages Evangeliste Gin Pole Device for Raising and Lowering a Tower
GB201000536D0 (en) * 2010-01-14 2010-03-03 Agco Sa Telescopic boom for material handling vehicle

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE406143A (it) *
US2829741A (en) * 1951-04-25 1958-04-08 Ideco Inc Telescoping self-erecting derrick structure
US2819803A (en) * 1954-10-12 1958-01-14 Leo B Obenchain Boom for cranes
US2942700A (en) * 1955-05-27 1960-06-28 Alpar Mfg Company Telescoping tower
US3398492A (en) * 1966-12-21 1968-08-27 Nat Crane Corp Extendable boom

Also Published As

Publication number Publication date
DE2006429A1 (de) 1970-08-27
FR2033326B1 (it) 1975-02-21
US3727359A (en) 1973-04-17
FR2033326A1 (it) 1970-12-04
NL7001949A (it) 1970-08-14

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees