Bridges – Gangway – ramp – or dock leveler – Attached
Patent
1979-11-21
1982-03-09
Byers, Jr., Nile C.
Bridges
Gangway, ramp, or dock leveler
Attached
180 65, E01D 100
Patent
active
043181988
ABSTRACT:
An improved driving control and wheel position indicator for an extendible and retractable passenger conveyance loading ramp of the type having one end mounted for pivotal movement about a vertical axis and the other end supported on an undercarriage having steerable, driven ground engaging wheels controlled from an operator's station in a vestibule mounted for pivotal movement about a vertical axis on the movable end of the ramp. The system includes a wheel position indicator connected between the undercarriage and the movable vestibule including means for detecting the steered position of the ground engaging wheels and a visual display at the operator's station responsive to the wheel position detecting means for continuously indicating the true bearing of the ground engaging wheels regardless of the rotative position of the vestibule about its vertical pivot axis.
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Byers Jr. Nile C.
Wollard Aircraft Equipment, Inc.
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