Abstract: A fifth wheel coupling device is adapted for a towing vehicle that vertically receives a kingpin of a trailer. The device includes a plate having a kingpin hole formed therethrough defining a vertical path adapted to permit entry of the kingpin into the kingpin hole and through the plate along the vertical path, and to prevent release of the kingpin out of the kingpin hole along a lateral path leading outside the plate. A support base is attached to the plate, and is adapted to mount the plate to the towing vehicle. A lifting mechanism is operatively connected to the plate and is adapted to be mounted on the towing vehicle for raising and lowering the plate relative to the trailer. A locking mechanism is movably attached to the plate and is provided with an actuating portion.

Abstract: A fifth wheel coupling device is adapted for a towing vehicle that vertically receives a kingpin of a trailer. The device includes a plate having a kingpin hole formed therethrough defining a vertical path adapted to permit entry of the kingpin into the kingpin hole and through the plate along the vertical path, and to prevent release of the kingpin out of the kingpin hole along a lateral path leading outside the plate. A support base is attached to the plate, and is adapted to mount the plate to the towing vehicle. A lifting mechanism is operatively connected to the plate and is adapted to be mounted on the towing vehicle for raising and lowering the plate relative to the trailer. A locking mechanism is movably attached to the plate and is provided with an actuating portion.

Abstract: A fifth wheel includes a top plate having a throat that is adapted to receive a kingpin of a trailer. The fifth wheel is equipped with a locking mechanism including a jaw slidably connected to the top plate and slidable between a closed position where the jaw blocks passage of a kingpin out of the throat of the fifth wheel and an open position where a kingpin may pass into and out of the throat of the fifth wheel. The jaw has an edge adapted to engage a kingpin positioned in the throat of the fifth wheel when the jaw is in the closed position. A bias device urges the jaw towards the closed position. The fifth wheel further includes a mechanism for moving the jaw between the open and closed positions. Further, the top plate of the fifth wheel is configured to allow service and/or replacement of the jaw from the top of the fifth wheel while it is assembled to a vehicle.

Abstract: A fifth wheel includes a top plate having a throat that is adapted to receive a kingpin of a trailer. The fifth wheel is equipped with a locking mechanism including a jaw slidably connected to the top plate and slidable between a closed position where the jaw blocks passage of a kingpin out of the throat of the fifth wheel and an open position where a kingpin may pass into and out of the throat of the fifth wheel. The jaw has an edge adapted to engage a kingpin positioned in the throat of the fifth wheel when the jaw is in the closed position. A bias device urges the jaw towards the closed position. The fifth wheel further includes a mechanism for moving the jaw between the open and closed positions. Further, the top plate of the fifth wheel is configured to allow service and/or replacement of the jaw from the top of the fifth wheel while it is assembled to a vehicle.