Geometrical instruments – Straight-line light ray type – Structurally installed
Patent
1987-08-27
1988-05-03
Haroian, Harry N.
Geometrical instruments
Straight-line light ray type
Structurally installed
116 28R, B60Q 126
Patent
active
047411112
ABSTRACT:
A target and aiming method with apparatus for accurately lining up a towing vehicle to a tow-type recreational vehicle or trailer for easy hook-up. Attachable components for accurate alignment of the trailer tongue to the towing vehicle hitch ball through use of a pointer and a target strip on the rear window of the towing vehicle is detailed in the specification and illustrated in the drawings.
REFERENCES:
patent: 3858966 (1975-01-01), Lowell
patent: 4541183 (1985-09-01), McConnell
patent: 4621432 (1986-11-01), Law
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