Multiple spool valve assembly

Claim 1

A HOUSING FOR A SPOOL VALVE ASSEMBLY HAVING (A) AT LEAST TWO SPOOL BORES FOR RECIPROCATION OF VALVE SPOOLS THEREIN, (B) A BYPASS PASSAGE INTERSECTING BOTH SPOOL BORES AND ADAPTED FOR CONNECTION WITH A FLUID PRESSURE SOURCE AND WITH A FLUID RESERVOIR AT ITS RESPECTIVE ENDS, (C) PRESSURE FEED PASSAGES INTERSECTING THE RESPECTIVE SPOOL BORES AND HAVING EXTENSIONS COMMUNICATING WITH SAID BYPASS PASSAGE UPSTREAM OF THE RESPECTIVE SPOOL BORES, (D) MOTOR PASSAGES INTERSECTING THE RESPECTIVE SPOOL BORES FOR CONNECTION WITH FLUID MOTORS, AND (E) RETURN PASSAGES INTERSECTING THE RESPECTIVE SPOOL BORES LEADING TO THE PRESSURE END OF SAID BYPASS PASSAGE, SAID HOUSING FURTHER HAVING ADDITIONAL PASSAGES CONNECTING THE PRESSURE END OF SAID BYPASS PASSAGE WITH AT LEAST ONE PRESSURE FEED PASSAGE OF THE DOWNSTREAM SPOOL BORE, AND AT LEAST ONE SLEEVE MEANS INSERTED IN ONE OF SAID ADDITIONAL PASSAGES OPERATIVE TO ISOLATE THE PRESSURE FEED EXTENSION OF SAID DOWNSTREAM SPOOL BORE FROM SAID BYPASS PASSAGE EXCEPT THROUGH SAID ADDITIONAL PASSAGES, WHEREBY VALVE SPOOLS IN SAID SPOOL BORES MAY BE SELECTIVELY OPERATED ONE AT A TIME OR SIMULTANEOUSLY TO CONTROL THE RESPECTIVE MOTORS.