Method and system for horizontally controlling a fork for a fork

Details Method and system for horizontally controlling a fork for a fork Method and system for horizontally controlling a fork for a fork

1982-03-31

1985-01-01

Chin, Gary

Boots, shoes, and leggings

414273, 414636, B66F 906, G06F 1550

Patent

active

044919182

ABSTRACT:
A method and system for horizontally controlling a fork for a fork lift truck to be positioned at a position parallel with respect to the ground, according to the loads mounted on the fork. The target backward tilting angle of the upright is previously determined as a function of the load on the fork and stored in a memory of a microcomputer. Therefore, the microcomputer outputs an upright forward/backward tilting operation command signals to a tilt servo mechanism on the basis of signals outputted from a load sensor and a potentiometer to detect upright tilt angles. The tilt servo mechanism according to the present invention can adjust and stop the upright at a target backward tilting angle at a low speed without applying a shock to the load.

REFERENCES:
patent: 3993166 (1976-11-01), Senour
patent: 4068773 (1978-01-01), Downing et al.
patent: 4168934 (1979-09-01), Downing et al.
patent: 4411577 (1983-10-01), Shearer, Jr.
patent: 4411582 (1983-10-01), Nakada
patent: 4412327 (1983-10-01), Fox et al.

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