Land vehicles – Wheeled – Articulated vehicle
Patent
1981-09-10
1984-02-21
Pekar, John A.
Land vehicles
Wheeled
Articulated vehicle
340 52R, 340686, B60D 114
Patent
active
044325630
ABSTRACT:
An improved hitching guidance device to facilitate the coupling of towing and towed units is herein presented. Such a device is advantageous when the towed unit, with its hitch ball receiver cup, cannot be readily visualized by the operator of the backing unit. The apparatus mounts on the hitch ball and uses electrical contacts, acting as switches, to sense the spatial orientation of a fine braided steel wire. This wire is wound under spring tension on an automatic reeling device and is stretched between the hitch ball and the hitch receiver cup where the wire is in turn fixed to the hitch cup in an exact and known location on the cup by a unique universal adapter clamp. Information relative to the position of the wire, and therefore relative to the position of the ball and receiver cup and their relationship to each other, is transmitted to the drivers area by a 6 conductor wire. This information is displayed on a guiding light console, visible to the towing vehicle operator. By appropriate response to the information displayed visually and audibly from this guiding light console, an operator can, with utmost precision, position the hitch ball of virtually any towing vehicle under the receiver cup of the towed unit, even under the most vexing of circumstances.
REFERENCES:
patent: 3418628 (1968-12-01), Fenner
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patent: 3734539 (1973-05-01), Salmi
patent: 3924257 (1975-12-01), Roberts
patent: 3938122 (1976-02-01), Mangus
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patent: 4122390 (1978-10-01), Kollitz et al.
patent: 4173353 (1979-11-01), Steele
patent: 4186939 (1980-02-01), Woods et al.
patent: 4187494 (1980-02-01), Jessee
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