Hydraulic system for harvesting machines
an open center hydraulic system in which a pair of flow divider valves is connected in series with the system's hydraulic pump to create a parasitic pressure upstream of these flow valves and the feeder and separator clutches are controlled remotely by simple solenoid actuated two-position valves. The cylinders actuating the clutches are of sufficient size upon application of the minimum parasitic pressure to hold the clutches in a given position so that no center neutral position is necessary on the two-position valves.
Latest International Harvester Company Patents:
Description
Patent History
Patent number: T986004
Type: Grant
Filed: Sep 5, 1978
Date of Patent: Sep 4, 1979
Assignee: International Harvester Company (Chicago, IL)
Inventors: Norman G. Stroup (Orion, IL), Eugene J. Krukow (Cordova, IL)
Application Number: 5/939,307
Type: Grant
Filed: Sep 5, 1978
Date of Patent: Sep 4, 1979
Assignee: International Harvester Company (Chicago, IL)
Inventors: Norman G. Stroup (Orion, IL), Eugene J. Krukow (Cordova, IL)
Application Number: 5/939,307
Classifications
Current U.S. Class:
To Give One Motor Priority To Motive Fluid Over Another (91/516);
Control Means Includes Separate Control Valves For Each Working Member (91/530);
With Means For Proportioning Motive Fluid Supply To Plural Motors (91/532);
Independently Actuatable Outputs With Condition Responsive Means Insuring Sufficiency Of Feed Of Motive Fluid (60/422);
Having Plural Energy Outputs (e.g., Plural Motors, Etc.) (60/484)
International Classification: F15B 1116;
International Classification: F15B 1116;
