Elevator – industrial lift truck – or stationary lift for vehicle – Stationary lift for roadway vehicle or required component... – Having specific drive means for support
Patent
1976-02-23
1978-04-18
Hoffman, Drayton E.
Elevator, industrial lift truck, or stationary lift for vehicle
Stationary lift for roadway vehicle or required component...
Having specific drive means for support
187 9E, 214DIG10, 214701B, 214672, 214674, B65G 4700, B66B 920
Patent
active
040847152
ABSTRACT:
A fork carriage attitude adjusting arrangement includes a mounting tower secured to and extending upwardly from the forward end of a longitudinally extending frame. A lever arrangement is pivotally attached to the mounting tower and has a hydraulic tilt motor operatively connected thereto for adjusting its angularity relative to the mounting tower. A pair of vertically spaced parallel arms have their rearwardly extending ends pivotally connected to the lever arrangement and their forwardly extending ends pivotally connected to a mast assembly to maintain the mast assembly at a predetermined attitude relative to the lever arrangement. The mast assembly includes at least one upright, a fork carriage and a roller mounting device for rotatably attaching a plurality of rollers to the fork carriage for adjusting the angularity of the fork carriage relative to the upright so that the angularity of the fork carriage may be selectively adjusted to maintain it at a predetermined attitude when the relative angularity between the mast assembly and mounting tower is changed by pivotal movement of the lever arrangement.
REFERENCES:
patent: 3070244 (1962-12-01), Lull
patent: 3251490 (1966-05-01), Guinot
patent: 3586192 (1971-06-01), Goodacre
patent: 3726427 (1973-04-01), Carlund
patent: 3727781 (1973-04-01), Ramsey
patent: 3826392 (1974-07-01), Farley
Caterpillar Tractor Co.
Grant John W.
Hoffman Drayton E.
Johnson R. B.
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