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US 4,281,846 AGranted
Anti-jackknife mechanism
OwnerKenneth A. Hallinventor
Life of this patent
Estimating the term…
Abstract
An anti-jackknife mechanism for a tractor-trailer arrangement wherein a stop member on the tractor and an assembly on the trailer can be positioned relative to each other so that an angular change between the tractor and trailer from its normally longitudinally aligned position is resiliently resisted and such resilient resistance is under the control of fluid motors.
Claims4
An anti-jackknife mechanism for a tractor-trailer combination comprising;
- means coupling a tractor and trailer together for articulation relative to each other about a vertical axis, a stop member fixed on said tractor having a pair of stop portions radially and symetrically spaced relative to said axis, a base member supported on said trailer, a buffer member supported on said trailer for movement relative to said base member, means limiting movement of said buffer member in one direction relative to said base member, means resiliently resisting movement of said buffer member relative to said base member in the other direction, and means to move said base member and buffer member relative to said trailer from a first position wherein said tractor and trailer are free to pivot relative to each other about said vertical axis and a second position wherein said buffer member is engagable with said stop portions to resiliently resist articulation of said tractor and trailer relative to each other.
Dependencies are inferred from the claim text.