Attachment jib for cranes

Details Attachment jib for cranes Attachment jib for cranes

1981-10-13

1985-01-15

Blix, Trygve M.

Traversing hoists

Having vertically swinging boom

Having means to swing boom vertically

212264, 414607, 182 2, B66C 2304, B66C 2356, B65G 904

Patent

active

044934262

ABSTRACT:
An attachment jib for supporting various working devices, such as a pipe manipulator, includes a support base which can be rigidly coupled removably with existing elements on the nose block of a telescopic crane boom. The jib includes telescopic sections and its base section is pivotally mounted on the support base and is luffed by power cylinders on such base through a wide angle. The jib contains another power cylinder to control extension and retraction of its fly section carrying the working device. An optional work support platform pivotally connected to the support base may be used either with or without the jib.

REFERENCES:
patent: 2969849 (1961-01-01), Grant
patent: 3036718 (1962-05-01), Koivula
patent: 3710893 (1973-01-01), Hippach
patent: 3773200 (1973-11-01), Morris
patent: 3907142 (1975-09-01), Welch
patent: 3945333 (1976-03-01), Fritsch et al.
patent: 4106631 (1978-08-01), Lundy
patent: 4159059 (1979-06-01), Christenson et al.
patent: 4241837 (1980-12-01), Suverkrop
patent: 4260064 (1981-04-01), Ekstom
patent: 4274793 (1981-06-01), Frey-Wigger

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