Lowboy Trailer with Steerable Rear Assembly
AssigneeCrisp & Crisp Inc.
InventorsJesse L. Crisp, John K. Crisp
Life of this patent
Estimating the term…
Abstract
A steerable rear assembly is disclosed for a lowboy trailer. The assembly includes a lowboy trailer deck and a neck extending partially upwardly rearward and partially horizontally rearward from the deck. A front bogey is positioned beneath the horizontally extending portion of the neck, and the front bogey is connected to the neck by a horizontal pivot between the neck and the front bogey and by a turntable between the neck and the front bogey. A rear bogey is positioned behind the front bogey and is connected to the front bogey by a vertical pivot between the front and rear bogeys.
Claims20
A steerable rear assembly for a lowboy trailer comprising:
- a lowboy trailer deck;
- a neck extending partially upwardly rearward and partially horizontally rearward from said trailer deck;
- a front bogey positioned beneath the horizontally extending portion of said neck;
- said front bogey being connected to said neck by a horizontal pivot between said neck and said front bogey and by a turntable between said neck and said front bogey;
- at least one axle on each end of said front bogey;
- and
- a rear bogey behind said front bogey and connected to said front bogey by a vertical pivot between said front and rear bogeys;
- and
- at least one steering piston connected to said front bogey and said rear bogey for steering said rear bogey with respect to set front Bogey about said vertical pivot.
(canceled)
(canceled)
A steerable rear assembly for a lowboy trailer comprising:
- three cooperating axes of rotation;
- a first horizontal axis of rotation between a rear neck that rises behind a lowboy deck and that connects said neck to a first bogey;
- a first vertical axis of rotation between said rear neck and said first bogey;
- and
- a second vertical axis of rotation between said first bogey and a second bogey that follows said first bogey.
A method of steering a lowboy trailer over uneven terrain comprising:
- pivoting a first bogey that is attached to the lowboy trailer about a horizontal axis with respect to the deck of the lowboy trailer while concurrently pivoting the first bogey about a vertical axis with respect to the deck of the lowboy trailer.
Dependencies are inferred from the claim text.