Machine element or mechanism – Rotary member or shaft indexing – e.g. – tool or work turret – Preselected indexed position
Patent
1985-08-05
1987-05-19
Braun, Leslie
Machine element or mechanism
Rotary member or shaft indexing, e.g., tool or work turret
Preselected indexed position
74336R, 74866, 192 362, B60K 4122
Patent
active
046657720
ABSTRACT:
A shift control system for a material handling implement including a transmission having a plurality of selectively electrically-operated hydraulic clutches is disclosed. The system includes a manually positionable gear selector which provides electrical signals respectively corresponding to actuation of the transmission's hydraulic clutches. Notably, the system includes acceleration sensing means arranged to sense acceleration of the implement along its longitudinal axis, with the acceleration sensing means operatively connected with the electrical controls which interface the gear selector and the electro-hydraulic valves which operate the hydraulic clutches. By this system, acceleration on the implement, either negative or positive, created during upshifting of the transmission is monitored, and the sequential operation of the hydraulic clutches for the next-requested shift automatically adjusted responsively to the sensed acceleration for facilitating smooth shifting of the transmission.
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Braun Leslie
Diehl Dwight G.
J. I. Case Company
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