| 摘要 |
Two light weight and height adjustable trailer hitch devices for towing a trailer. The hitches include a vertical hinge joint block element which attaches to the trailer, a vertical hinge joint block element which is attached to the towing vehicle's bumper, and a center block element for variably connecting said hinge joint block elements. In one embodiment, apertured clevises support a rotatable joint block element which is supported further by a pair of reinforcing strips attached to the outside of the first hitch device. A second hitch device employs a double-yoked center block element rotatably mounted in a clevis and including a vertical apertured disc. The hitches allow a trailer to remain level always, even when attached to vehicles with bumpers of various heights.
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