Bridge erection system

Details Bridge erection system Bridge erection system

1997-07-03

1999-07-13

Brahan, Thomas J.

Traversing hoists

Adjustable to transport or nonuse position

212312, 414542, B66C 2304

Patent

active

059214155

ABSTRACT:
A mobile crane including a wheeled carriage, support members having distal ends, mounted to the carriage and extendable laterally therefrom in two positions including a retracted position with the distal ends adjacent the carriage and an extended position with the distal ends separated from the carriage, first and second glide beams coupled to the distal ends for movement along a movement axis perpendicular thereto, at least one support beam connected to the tops of the glide beams and a hoist trolley coupled to the support beam. The components operate together to provide a fully supported gantry crane having a variable width useful in lifting and transporting various items including items which are wider than the carriage.

REFERENCES:
patent: 5511268 (1996-04-01), Albus et al.
patent: 5607071 (1997-03-01), Kroll et al.
patent: 5657888 (1997-08-01), Kroll et al.

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