Hydraulic drive control apparatus
Abstract
Abstract DISCLOSED HEREIN CONTROL APPARATUS FOR A HYDRAULIC DRIVE ARRANGEMENT PROVIDING THE DRIVE ARRANGEMENT WITH STANBY, INTERMITTENT, AND CONTINUOUS MODES OF OPERATION. A FLUID PRESSURE SOURCE, HYDRAULIC MOTOR, AND CONTROL APPARATUS FOR REGULATING FLUID FLOW BETWEEN THE FLUID SOURCE AND THE MOTOR FORM THE DRIVE ARRANGEMENT. THE CONTROL APPARATUS INCLUDES A PLURALITY OF FLOW PATHS THRUGH THE APPARAGUS, A PLURALITY OF VALVES DISPOSED IN THE FLOW PATHS WITH EACH VALVE HAVING A PLURALITY OF OPERATING POSITONS, AND STRUCTURE FOR OPERATING THE VALVES TO MOVE THE VALVES BETWEEN THE VARIOUS OPERATING POSITIONS TO REGULATE FLUID FLOW THROUGH THE CONTROL APPARATUS. A MECHANICAL FEEDBACK LOOP OPERABLE IN RESPONSE TO A PREDETERMINED ANGULAR INCREMENTAL ADVANCE OF THE MOTOR CONTROLS THE OPERATING POSITON OF ONE OF THE VALVES WHEREBY THE MOTOR MAY BE UTILIZED FOR THE POSITIONING OF A DRIVEN MEMBER OR LOAD ACCURATELY AND RAPIDLY EITHER IN A SERIES OF PREDETERMINED INCREMENTS OR IN A SINGLE CONTINUOUS OPERATION.
Inventors
- 👤 Werner G Holzbock
- 👤 Wade R Brown
Bibliographic Details
Claims Analysis
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| 3.5 Years (Year 4) | 1974-12-06 | 1975-06-07 | 1975-12-07 | $2000.00 | Window Closed / Lapsed |
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