Method of converting backhoe controls
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United States of America Patent
Stats
-
Aug 18, 1992
Issued Date -
N/A
app pub date -
May 10, 1991
filing date -
Dec 8, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A control mechanism for operating a backhoe is disclosed wherein the controls are adaptable to be configured in a selected one of a two lever system, a three lever system, or a four lever system. The control mechanism includes a first pivot axis on which the control levers are pivotally mounted and a second pivot axis on which a series of bell cranks are pivotally mounted. Various linkages interconnect the control levers with the bell cranks, and the bell cranks with hydraulic valve spools in a manner in which the valve body does not have to be reconfigured depending upon which control system is utilized. The control levers are configured with a pivot casting having a bent control rod threadably received therein, the position of which is fixed by a lock nut permitting the control handle to be positioned in the orientation desired by the operator.
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Cited Art Landscape
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