| 摘要 |
The invention contemplates pressure-fluid operated control connections, auxiliary to a trailer-hitch connection, for providing a selected one of a plurality of functions primarily to aid in making a hitched connection between a trailer and a towing vehicle. The invention also provides selective availability of safety aids for back-up maneuvering of the hitched trailer, and anti-sway coupling for the safe trailing of hitched vehicles on the highway. Various embodiments are described.
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