Operator control system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 5, 1988
Issued Date -
N/A
app pub date -
Jan 28, 1987
filing date -
Nov 12, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An operating control system for a lift truck controlled from a single multi-function operator hand control which is located and designed for improved operator comfort, convenience, simplicity and to reduce operator fatigue. The sole hand control for directional and speed control and the operation of all hydraulic functions of the truck related to the handling of loads is recessed in a compartment adjacent one side of the truck and supported from a control shaft which extends forwardly, leftwardly and downwardly and along which the control handle may be pushed or pulled linearly to control all such hydraulic truck functions. The grip handle is rotatable to control direction and speed of the truck. Switch controls are located conveniently adjacent the one end of the rotatable grip handle for selecting a variety of hydraulic functions by the same movements forwardly and rearwardly of the operator control handle along the control shaft. Electrical and hydraulic systems control the various hydraulic functions and are operatively connected to the control handle for operator selection of direction and speed of the truck as well as simultaneous operation of any selected hydraulic function one at a time only.
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