Transmission

Claim 1

IN A TRANSMISSION CONTROL FOR A TRANSMISSION HAVING RANGE GEARING INCLUDING A FIRST ROTATABLE CONTROLLED MEMBER OPERABLE WHEN RETARDED TO PROVIDE ONE DRIVE RANGE, A SECOND ROTATABLE CONTROLLED MEMBER OPERABLE WHEN RETARDED TO PROVIDE A SECOND DRIVE RANGE AND A THIRD ROTATABLE CONTROLLED MEMBER OPERABLE WHEN RETARDED TO PROVIDE A THIRD DRIVE RANGE, (A) A FIRST POSITIVE DISPLACEMENT TYPE PUMP HAVING FIRST INTAKE AND DISCHARGE PASSAGES ADAPTED TO BE DRIVEN BY SAID FIRST CONTROLLED MEMBER, (B) FIRST VALVE MEANS OPERABLE IN A FIRST CONDITION TO CONNECT SAID FIRST DISCHARGE PASSAGE TO SAID FIRST INTAKE PASSAGE TO SELECTIVELY PROVIDE FREE AND RESTRICTED FLUID FLOW FROM SAID FIRST DISCHARGE PASSAGE TO SAID FIRST INTAKE PASSAGE AND IN A SECOND CONDITION TO CLOSE SAID FIRST DISCHARGE PASSAGE, (C) FIRST PRESSURE RESPONSIVE VALVE MEANS OPERABLE IN RESPONSE TO A PREDETERMINED PRESSURE IN SAID FIRST DISCHARGE PASSAGE WHEN SAID FIRST DISCHARGE PASSAGE IS CLOSED BY SAID FIRST VALVE MEANS TO BYPASS SAID FIRST VALVE MEANS AND CONNECT SAID FIRST DISCHARGE PASSAGE DIRECTLY TO SAID FIRST INTAKE PASAGE, (D) CHECK VALVE MEANS OPERABLE TO PERMIT FLUID FLOW FROM SAID FIRST INTAKE PASSAGE TO SAID FIRST DISCHARGE PASSAGE, (E) A SECOND POSITIVE DISPLACEMENT TYPE PUMP HAVING SECOND INTAKE AND DISCHARGE PASSAGES ADAPTED TO BE DRIVEN BY SAID SECOND CONTROLLED MEMBER, (F) SECOND VALVE MEANS OPERABLE IN A FIRST CONDITION TO CONNECT SAID SECOND DISCHARGE PASSAGE TO SAID SECOND INTAKE PASSAGE TO SELECTIVELY PROVIDE FREE AND RESTRICTED FLUID FLOW FROM SAID SECOND DISCHARGE PASSAGE TO SAID SECOND INTAKE PASSAGE AND IN A SECOND CONDITION TO CLOSE SAID SECOND DISCHARGE PASSAGE, (G) SECOND PRESSURE RESPONSIVE VALVE MEANS OPERABLE IN RESPONSE TO A PREDETERMINED PRESSURE IN SAID SECONE DISCHARGE PASSAGE WHEN SAID SECOND DISCHARGE PASSAGE IS CLOSED BY SAID SECOND VALE MEANS TO BYPASS SAID SECOND VALVE MEANS TO CONNECT SAID SECOND DISCHARGE PASSAGE DIRECTLY TO SAID SECOND INTAKE PASSAGE, (H) A THIRD POSITIVE DISPLACEMENT TYPE PUMP HAVING THIRD INTAKE AND DISCHARGE PASSAGE ADAPTED TO BE DRIVEN BY SAID THIRD CONTROLLED MEMBER, (I) THIRD VALVE MEANS OPERABLE IN A FIRST CONDITION TO CONNECT SAID THIRD DISCHARGE PASSAGE TO SAID THIRD INTAKE PASSAGE TO SELECTIVELY PROVIDE FREE AND RESTRICTED FLUID FLOW FROM SAID THIRD DISCHARGE PASSAGE TO SAID THIRD INTAKE PASSAGE AND IN A SECOND CONDITION TO CLOSE SAID THIRD DISCHARGE PASSAGE, (J) AND THIRD PRESSURE RESPONSIVE VALVE MEANS OPERABLE IN RESPONSE TO A PREDETERMINED PRESSURE IN SAID THIRD DISCHARGE PASSAGE WHEN SAID THIRD DISCHARGE PASSAGE IS CLOSED BY SAID THIRD VALVE MEANS TO BYPASS SAID THIRD VALVE MEANS AND CONNECT SAID THIRD DISCHARGE PASSAGE DIRECTLY TO SAID THIRD INTAKE PASSAGE.