Communications: electrical – Aircraft alarm or indicating systems – Docking guidance
Patent
1995-05-04
1998-10-20
Swarthout, Brent A.
Communications: electrical
Aircraft alarm or indicating systems
Docking guidance
3409322, G08B 2100
Patent
active
058253050
ABSTRACT:
A cargo loading alignment device is integrally mounted to a movable cargo transport. The transport has a cargo door opening and loading ramp with a longitudinal centerline, and the alignment device is installed near the cargo door opening. The device includes at least one light source for projecting at least one beam of light onto the loading surface, for visually indicating a desired alignment of a delivery vehicle for transferring cargo to and from the transport. A preferred embodiment of the device includes a light source for projecting a first and a second planer beam of light perpendicularly to the centerline of the loading ramp; and a third planer beam of light extending parallel or coinciding with the centerline of the loading ramp. Other embodiments include pencil beams of light rather than planer beams to indicate an alignment reference line to facilitate the alignment of a delivery vehicle to a cargo transport; and further embodiments utilize the invention as a safety device to visually indicate caution "or stay out" areas on the ground below the transport.
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McDonnell Douglas Corporation
Swarthout Brent A.
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