Height adjustment hitch apparatus

Details Height adjustment hitch apparatus Height adjustment hitch apparatus

2006-08-25

2008-09-16

Shriver, J. Allen (Department: 4136)

Land vehicles

Wheeled

Articulated vehicle

C280S400000, C280S504000, C280S511000

Reexamination Certificate

active

07425015

ABSTRACT:
A apparatus having a height adjustment mechanism to adjust the height of a trailer. The height adjustment mechanism is comprised of, among other elements, an outer tube, a crank assembly having a drive gear, an inner tube having an internally threaded acme nut, and an acme screw assembly. The acme screw assembly is linearly and cooperatively assembled such that the crank assembly causes the elongated acme screw to thread vertically through the internally threaded acme nut and the acme screw assembly to concurrently move vertically. The outer tube telescopically and slidably encases the inner tube, such that the outer tube can be vertically adjusted with respect to the inner tube when the crank assembly is operated. The trailer has a trailer hitch including a hitching end integrally secured to the outer tube outside surface, and is integrally attached to the trailer hitch at the trailer end. The trailer is adjusted vertically, concurrently when the crank assembly to the height adjustment mechanism is operated.

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patent: 2008/0061211 (2008-03-01), Madsen

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