Fifth wheel coupling

Details Fifth wheel coupling Fifth wheel coupling

2005-05-17

2005-05-17

Morris, Lesley D. (Department: 3611)

Land vehicles

Wheeled

Articulated vehicle

C280S423100

Reexamination Certificate

active

06893039

ABSTRACT:
A fifth wheel coupling (4) for coupling a tractor (2) and a semi-trailer (3) of a tractor-trailer unit (1) comprises a coupling device arranged on the tractor (2) for receiving and arresting a king journal fastened to the semi-trailer (3). In order to achieve the best possible swiveling properties at a design of low complexity, there is provided as a fifth wheel coupling a ball-shape coupling (4) with a coupling ball (5) and an associated holding-down device (6) on the one hand and a ball cup (7) enclosing the coupling ball (5) in the coupling position and the attached butt part (8) on the other hand, with the coupling ball (5) and the holding-down device (6) replacing the coupling device and the ball cup (7) and the butt part (8) replacing the king journal.

REFERENCES:
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patent: 943 567 (1956-05-01), None
patent: 834 069 (1960-05-01), None

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