Collapsible fifth wheel trailer hitch locked position indicator

Details Collapsible fifth wheel trailer hitch locked position indicator Collapsible fifth wheel trailer hitch locked position indicator

1979-01-31

1980-10-28

Beltran, Howard

Freight accommodation on freight carrier

Load bearer accommodation

Semitrailer accommodation

280432, 410 64, B60P 306, B61D 4500, B65J 122

Patent

active

042304300

ABSTRACT:
In the piggyback trailer hitch of the present invention, the hitch is held in upright position by a pair of hook-shaped movable locking lugs which engage a pair of fixed locking lugs on opposite sides of the hitch. Links extending from the nose of the movable locking lugs are attached to a shaft extending transversely of the hitch. On at least one side of the hitch an indicating arm is pivotably mounted upon an upper diagonal strut cover plate. The indicating arm includes a lower surface which engages the shaft. The lower surface includes a slot which the shaft engages when the movable locking lug is locked in the upright position. When the shaft engages this slot, the distal end of the indicating arm extends through a slot in a lower diagonal strut cover plate to indicate to the operator that the hitch is fully locked in the upright position. The lower surface of the indicating arm includes a surface portion laterally spaced from the slot which the shaft engages when the movable locking lug is not in the fully engaged position with the fixed locking lug. When the shaft engages this camming surface, the indicating arm is pivoted to a position located within the diagonal strut, above the lower cover plate. This indicates to the operator that the hitch is not in the fully locked, upright position.

REFERENCES:
patent: 3050320 (1962-08-01), Clejan
patent: 3234893 (1966-02-01), Sweda
patent: 3497169 (1970-02-01), Enochian
patent: 3892426 (1975-07-01), Ferris

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