Elevator – industrial lift truck – or stationary lift for vehicle – Industrial lift truck or required component thereof – Having extensible vertical guide for load support
Patent
1995-05-12
1996-12-24
Bucci, David A.
Elevator, industrial lift truck, or stationary lift for vehicle
Industrial lift truck or required component thereof
Having extensible vertical guide for load support
414641, 414659, B66F 908, B66F 1700
Patent
active
055866204
ABSTRACT:
A fork lift truck includes a fork level sensor located in the forks, away from the vertical mast of a lift truck for detecting the true level of the forks, and a vision system including a camera which may take several forms. In one form, a single camera is mounted in a housing which may be moved to a protected location vertically either by sliding in the carriage assembly, or by use of a parallelogram device. In another form, multiple cameras are employed where a second camera may either mounted above the first camera in the same housing or mounted between the forks. Alternatively, the first camera may perform multiple roles by being moved vertically from a first predetermined location below the bottom of the forks to a higher elevation a second predetermined location relative to the forks. A video display terminal, which shows the view observed by the camera, may also include a fork level indicator, a reticle for assisting in adjusting the vertical position of the forks, and an indicator showing the specific truck function selected by the operator.
REFERENCES:
patent: 3298463 (1967-01-01), McIntosh
patent: 3542161 (1970-11-01), Ulinski
patent: 4279328 (1981-07-01), Ahlbom
patent: 4566032 (1986-01-01), Hirooka et al.
patent: 4678329 (1987-07-01), Lukowski, Jr. et al.
patent: 5011358 (1991-04-01), Andersen et al.
patent: 5208753 (1993-05-01), Acuff
patent: 5215423 (1993-06-01), Schulte-Hinsken et al.
Dammeyer Ned E.
Fullenkamp Todd M.
Stammen Harold A.
Bucci David A.
Crown Equipment Corporation
Lowe Scott L.
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