Anti-rollback mechanism for material handling implement

Details Anti-rollback mechanism for material handling implement Anti-rollback mechanism for material handling implement

1975-07-31

1977-04-19

Werner, Frank E.

214140, E02F 386

Patent

active

040183521

ABSTRACT:
An anti-rollback mechanism for a material handling implement including a unit pivotally mounted on the outer end of the boom of a vehicle is disclosed herein. The anti-rollback mechanism includes a member that is moved with the boom to indicate the position of the boom and prevent actuation of a manual control lever that forms part of the hydraulic circuit for pivoting the unit on the boom. The anti-rollback mechanism incorporates a manual override to allow the operator to tilt the unit on the boom even though the boom is in the completely raised position.

REFERENCES:
patent: 2768758 (1956-10-01), French
patent: 2853200 (1958-09-01), Beyerstedt
patent: 3045845 (1962-07-01), Hackett et al.
patent: 3197051 (1965-07-01), Thickpenny
patent: 3521781 (1970-07-01), Holsinger et al.
patent: 3539068 (1970-11-01), Seaberg

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