Auxiliary supporting unit, boarding bridge with the same and...

Details Auxiliary supporting unit, boarding bridge with the same and... Auxiliary supporting unit, boarding bridge with the same and...

2005-01-25

2010-06-29

Hartmann, Gary S (Department: 3671)

Bridges

Gangway, ramp, or dock leveler

Attached

C014S071300

Reexamination Certificate

active

07743445

ABSTRACT:
The present invention relates to an auxiliary supporting unit for a boarding bridge, a boarding bridge with the same and method for improving stability of boarding bridge. The auxiliary supporting unit includes a leg support which can be driven to extend and retract; and a foot portion attached to one end of the leg support, wherein the foot portion can be supported on the ground when the leg support being extended and can leave the ground when the leg support being retracted.

REFERENCES:
patent: 3340782 (1967-09-01), Novak
patent: 3577838 (1971-05-01), Dordrecht
patent: 3834562 (1974-09-01), Norrie
patent: 4318197 (1982-03-01), Drozd
patent: 5040257 (1991-08-01), Bentz
patent: 6055692 (2000-05-01), Pell et al.
patent: 6330726 (2001-12-01), Hone et al.
patent: 6954959 (2005-10-01), Hutton
patent: 7428765 (2008-09-01), Hutton
patent: 2002-37196 (2002-02-01), None
patent: WO 02/34622 (2002-05-01), None

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