Hydraulic boom compensation system for aerial devices

Details Hydraulic boom compensation system for aerial devices Hydraulic boom compensation system for aerial devices

1997-09-19

1999-08-31

Brahan, Thomas J.

Traversing hoists

Having vertically swinging boom

Having means to swing boom vertically

182 29, 212238, 414708, B66C 2308

Patent

active

059442042

ABSTRACT:
An upper boom compensation system for an aerial device having an articulating boom assembly. The lower boom is raised and lowered by a special double cylinder having two pistons and a common piston rod. A hydraulic circuit is arranged to transfer fluid between the lower boom cylinder and the upper boom cylinder in a manner to raise and lower the upper boom correspondingly to raising and lowering of the lower boom. The upper boom can also be controlled independently of the lower boom.

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