Fifth wheel locking mechanism

Details Fifth wheel locking mechanism Fifth wheel locking mechanism

1995-05-15

1997-06-24

Hurley, Kevin

Land vehicles

Wheeled

Articulated vehicle

B62D 5312

Patent

active

056411740

ABSTRACT:
A interconnection of the jaw, wedge and operating handle in a fifth wheel facilitates the provision of an indicator on a secondary locking mechanism which further insures the security of the system. In the invention, the jaw is connected to the operating handle by a pivoting timing lever which pivots off a pin on the jaw such that the jaw remains engaged with the fifth wheel until the wedge is substantially removed from engagement with the jaw. In cooperation with the primary locking mechanism, a secondary lock is provided at the end of the operating handle such that a pawl arrangement engages a stop on the fifth wheel assembly until positively released by the operator. The pawl arrangement further has a mechanical indicator which extends beyond the fifth wheel assembly and allows the operator to determine whether the king pin is engaged and the secondary lock is activated.

REFERENCES:
patent: 2371750 (1945-03-01), Fontaine et al.
patent: 3318616 (1967-05-01), Fontaine et al.
patent: 3630545 (1971-12-01), Fontaine
patent: 3844584 (1974-10-01), Fontaine
patent: 4140328 (1979-02-01), Fontaine
patent: 4477100 (1984-10-01), Elyalcim
patent: 4946183 (1990-08-01), Benson et al.
patent: 5516138 (1996-05-01), Fontaine

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