Pallet truck with calculated fork carriage height

A pallet truck including a controller that calculates the height of the fork carriage without the use of mechanical devices such as switches or sensors. A calculated carriage height is derived by adding the amount of time that a carriage is commanded to be raised and offsetting that by the amount of...

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Bibliographische Detailangaben
1. Verfasser:	BALDINI, AUGUSTUS R
Format:	Patent
Sprache:	eng
Schlagworte:	HAND-PROPELLED VEHICLES, e.g. HAND CARTS, PERAMBULATORS HAULING HOISTING HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDEDFOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCEDIRECTLY TO THE SURFACE OF A LOAD LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS LIFTING PERFORMING OPERATIONS SLEDGES TRANSPORTING
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Beschreibung
Zusammenfassung:	A pallet truck including a controller that calculates the height of the fork carriage without the use of mechanical devices such as switches or sensors. A calculated carriage height is derived by adding the amount of time that a carriage is commanded to be raised and offsetting that by the amount of time that the carriage lower button is depressed. The calculated carriage height is essentially an accumulated lift time where the time that the carriage is lifting is a positive value and the time that the carriage is lowering is a negative value. When these values are combined, the result is the present calculated carriage height. The controller further monitors the calculated carriage height such that if the carriage is too close to the ground, the maximum speed of the pallet truck is limited to prevent damage to the forks or ground due to striking or scraping between them. QBACTIVE\6107526.1 -i. POWER ONMOIRFR OBTAIN 151416