Material or article handling – Elevator or hoist and loading or unloading means therefor – Elevator wherein means comprises guide mounted for relative...
Patent
1988-04-06
1990-09-18
Werner, Frank E.
Material or article handling
Elevator or hoist and loading or unloading means therefor
Elevator wherein means comprises guide mounted for relative...
414638, 414636, 414785, 414673, 414 21, 414642, 414273, 364478, 36442405, 187 9E, B66F 906
Patent
active
049574086
ABSTRACT:
When the center of gravity of the load put on the two prongs of a forklift is located to the right or left of the central position, the prongs are tilted. The invention is intended to prevent the prongs from tilting in this situation. Tilt sensors are mounted on the prongs. A computer calculates the tilt angles of the prongs, based on the output signals from the sensors. A driving device receives the output signals from the computer and brings the prongs into the horizontal.
REFERENCES:
patent: 3386603 (1968-06-01), Rueb
patent: 3410433 (1968-11-01), Brown
patent: 3865265 (1975-02-01), Brudi et al.
patent: 4221530 (1980-09-01), Williams et al.
patent: 4491918 (1985-01-01), Yuki et al.
patent: 4632630 (1986-12-01), Maki et al.
patent: 4747610 (1988-05-01), Yingling et al.
U.S. patent application Ser. No. 07/178,211 filed Apr. 6, 1988.
Toyota Jidosha & Kabushiki Kaisha
Werner Frank E.
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