Single handle control apparatus
AssigneeCaterpillar Tractor Co.
InventorCyril W. Habiger
Life of this patent
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Abstract
A control apparatus has a single control handle, first and second work elements, and first and second ramps each contacting a respective work element. Apparatus is further provided for selectively, progressively pivoting only one of the ramps in response to controllably moving the single control handle. One of the ramps pivotally moves in response to moving the handle in a first plane to a first position and in a different second plane from a first toward a second position. The other ramp pivotally moves in response to moving the handle in the first plane to a second position and in a different third plane from a first toward a second position. Respective work elements are thereby moved between a plurality of positions for controlling an operation such as the flow of fluid through associated, respective valves.
Claims15
In a control apparatus having a frame, a control handle, first and second work elements, first and second ramps each being independently, pivotally movable relative to the frame and being in contact with a respective work element, each of said work elements being movable between a plurality of positions in response to pivotally moving said respective ramps between a plurality of positions, the improvement comprising:
- first means for selectively, progressively pivoting only one of the first and second ramps in a preselected direction in response to moving the control handle in a first plane to a first position located in said first plane and in a different second plane from a first toward a second position located in said second plane and for selectively, progressively pivoting only the other of said first and second ramps in said preselected direction in response to moving the control handle in the first plane to a second position located in said first plane and in a different third plane from a first toward a second position located in said third plane.
Dependencies are inferred from the claim text.