Tractor-trailer connection for uneven terrain travel
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United States of America Patent
Stats
-
Aug 20, 1991
Grant Date -
N/A
app pub date -
Jan 12, 1989
filing date -
Jan 12, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A gooseneck structure is coupled to a tractor via a spherical bearing which compensates for pitch, roll and yaw motions and is coupled to support brackets upon the trailer via a horizontal support beam positioned at the underside of the support brackets. Air bag lifting actuators cause the horizontal support beam to be raised to contact the support brackets mounted upon a side wall portion of the trailer and a hydraulic actuator thereafter causes a substantially vertical elevation control beam to press against a side wall portion of the trailer to rotate the trailer about its wheel axles and thus elevate it above the terrain to provide for a variable degree of clearancce between the underside of the trailer, regardless of the degree of roughness of the terrain.
First Claim
Family
International Classification(s)
Cited Art Landscape
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