| 摘要 |
A fifth wheel coupling for a tractor-trailer vehicle including a fifth wheel plate to be rockably mounted on the tractor, a turntable plate to be rotatably mounted on the trailer, means releasably joining the plates in coupled relation, wherein the table plate rests on and is coupled to the wheel plate, and mating conduit coupling parts mounted on the plates for relative movement into and from mating engagement upon relative movement of the plates into and from coupled relation. The mating conduit coupling parts may constitute an electrical coupling for transmitting electrical power between the tractor and trailer and a hose coupling for transmitting pressure fluid, such as braking air, between the tractor and trailer.
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