Patent ID: 6954959

Claim:
A passenger boarding bridge having an inboard end for being pivotally mounted to a support and including a tunnel section for being extended over the wing of an aircraft in a cantilever-like fashion, the passenger boarding bridge comprising: a main elevating mechanism mounted to a wheel carriage of the passenger boarding bridge for supporting the tunnel section in a height adjustable manner; at least a jack including a first portion mounted to the aircraft passenger boarding bridge at a point that is distal from an outboard end thereof, and a second portion having a first end for being telescopically received within the first portion such that a length of the jack is variable, and a second end for engaging an area of the ground that is elevationally below the aircraft passenger boarding bridge; and, a power source in communication with the at least a jack for providing power for extending the length of the jack, wherein extending the length of the at least a jack translates into an upward motion of the wheel carriage for elevating the outboard end of the passenger boarding bridge relative to the inboard end of the passenger boarding bridge and independently of the main elevating mechanism.