Coupling hook for a three-point connection on a tractor

Details Coupling hook for a three-point connection on a tractor Coupling hook for a three-point connection on a tractor

1976-01-30

1977-03-29

Song, Robert R.

Land vehicles

Wheeled

Articulated vehicle

280509, B60D 110

Patent

active

040145620

ABSTRACT:
A coupling hook for lockingly engaging a coupling pin on an implement or the like has a pocket within which is pivoted an operating lever and a latch has one end pivotally connected to the operating lever and its other end projecting toward the jaw opening in which is received the coupling pin. The latch is pivotable and slidable upon a supporting pin such that when a coupling pin acts upon an unlocking surface on the latch during the coupling operation the latch will slide back into the pocket to permit the coupling pin to be received within the hook jaw. When the coupling pin is locked within the jaw the pin will bear against the locking surface of the latch to urge the supporting surface of the latch against an edge of an opening in the pocket through which the latch protrudes so that a moment is produced acting upon the latch and operating lever which urges the latch into the jaw opening.

REFERENCES:
patent: 2429761 (1947-10-01), Ketel
patent: 2783059 (1957-02-01), Hartl
patent: 2951711 (1960-09-01), Karnath
patent: 3539203 (1970-11-01), Baugh

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