Fluid metering and delivering device

Claim 1

A DEVICE FOR PRECISELY METERING AND DELIVERING A PREDETERNMINED VOLUME OF FLUID COMPRISING: A TUBULAR CONTAINER INCLUDING OPPOSITE ENDS AND HAVING A CHAMBER FORMED BETWEEN SAID ENDS FOR HOLDING A FLUID, SAID CONTAINER HAVING AT LEAST ONE PORT FORMED THEREIN AT EACH END FOR THE ENTRY OF FLUID THERETHROUGH INTO SAID CHAMBER, AND HAVING FURTHER AT LEAST ONE PASSAGE FORMED THEREIN AT EACH END FOR THE DISCHARGE OF FLUID FROM SAID CHAMBER; FIRST MEANS OPERABLY CONNECTED TO SAID CONTAINER AND INCLUDING A ROD ADJUSTABLY INSERTED INTO SAID CHAMBER AT ONE END THEREOF FOR MOVEMENT AXIALLY OF SAID CONTAINER, SAID FIRST MEANS OPERABLE TO OPEN NE OF SAID PORTS AND SIMULTANEOUSLY TO CLOSE ONE OF SAID PASSAGES; SECOND MEANS OPERABLY CONNECTED TO SAID CONTAINER AND INCLUDING A ROD ADJUSTABLY INSERTED INTO SAID CHAMBER AT THE OPPOSITE END THEREOF FOR MOVEMENT AXIALLY OF SAID CONTAINER, SAID SECOND MEANS OPERABLY TO OPEN THE OTHER ONE OF SAID PORTS AND SIMULTANEOUSLY TO CLOSE THE OTHER ONE OF SAID PASSAGES; AND A PISTON FREELY MOUNTED IN SAID CHAMBER AND HAVING A SLIDING, FLUID TIGHT FIT WITHIN SAID CONTAINER, SAID PISTON FORMING ON EACH SIDE THEREOF A PAIR OF EXPANSIBLE SUBCHAMBERS THE AREA OF WHICH IS DETERMINED BY THE POSITION OF THE SAID FIRTST OR SECOND MEANS EXTENDED THEREIN, SAID PISTON MOVABLE IN EITHER DIRECTION WITHIN SAID CHAMBER IN RESPONSE TO THE PRESSURE OF A FLUID THROUGH EITHER PORT AND INTO ONE SUBCHAMBER WHEREBY TO FORCE A FLUID IN THE OTHER SUBCHAMBER OUT THROUGH THE PASSAGE THEREFOR; SAID PISTON ENGAGEABLE AT SAID ONE END OF SAID CHAMBER WITH SAID FIRST MEANS ROD TO EFFECT OPERATION OF SAID FIRST MEANS PRIOR TO CONTINUED MOVEMENT OF SAID PISTON TOWARD SAID CHAMBER ONE END, AND ENGAGEABLE AT SAID OPPOSITE END FO SAID CHAMBER WITH SAID SECOND MEANS ROD TO EFFECT OPERATION OF SAID SECOND MEANS PRIOR TO CONTINUED MOVEMENT OF SAID PISTON TOWARD SAID CHAMBER OPPOSITE END, RESPECTIVE OPERATION OF EITHER SAID FIRST MEANS AND SAID SECOND MEANS BEING PROPORTIONAL TO THE RESPECTIVE POSITION OF SAID PISTON AND SAID ROD ENGAGED THEREBY, WHEREBY THE ENTRY OF FLUID INTO ONE SUB-CHAMBER AND THE DISCHAGE OF FLUID FROM THE OPPOSITE SUB-CHAMBER IS PROGRESSIVELY DECREASED AS SAID PISTON CONTINUES TO MOVE INTO ENGAGEMENT WITH A RESPECTIVE CONTAINER END AND AFTER ENGAGEMENT OF SAID PISTON WITH A RESPECTIVE ROD.

Claim 2

A DEVICE FOR PRECISELY METERING AND DELIVERING A PREDETERNMINED VOLUME OF FLUID COMPRISING: A TUBULAR CONTAINER INCLUDING OPPOSITE ENDS AND HAVING A CHAMBER FORMED BETWEEN SAID ENDS FOR HOLDING A FLUID, SAID CONTAINER HAVING AT LEAST ONE PORT FORMED THEREIN AT EACH END FOR THE ENTRY OF FLUID THERETHROUGH INTO SAID CHAMBER, AND HAVING FURTHER AT LEAST ONE PASSAGE FORMED THEREIN AT EACH END FOR THE DISCHARGE OF FLUID FROM SAID CHAMBER; FIRST MEANS OPERABLY CONNECTED TO SAID CONTAINER AND INCLUDING A ROD ADJUSTABLY INSERTED INTO SAID CHAMBER AT ONE END THEREOF FOR MOVEMENT AXIALLY OF SAID CONTAINER, SAID FIRST MEANS OPERABLE TO OPEN NE OF SAID PORTS AND SIMULTANEOUSLY TO CLOSE ONE OF SAID PASSAGES; SECOND MEANS OPERABLY CONNECTED TO SAID CONTAINER AND INCLUDING A ROD ADJUSTABLY INSERTED INTO SAID CHAMBER AT THE OPPOSITE END THEREOF FOR MOVEMENT AXIALLY OF SAID CONTAINER, SAID SECOND MEANS OPERABLY TO OPEN THE OTHER ONE OF SAID PORTS AND SIMULTANEOUSLY TO CLOSE THE OTHER ONE OF SAID PASSAGES; AND A PISTON FREELY MOUNTED IN SAID CHAMBER AND HAVING A SLIDING, FLUID TIGHT FIT WITHIN SAID CONTAINER, SAID PISTON FORMING ON EACH SIDE THEREOF A PAIR OF EXPANSIBLE SUBCHAMBERS THE AREA OF WHICH IS DETERMINED BY THE POSITION OF THE SAID FIRTST OR SECOND MEANS EXTENDED THEREIN, SAID PISTON MOVABLE IN EITHER DIRECTION WITHIN SAID CHAMBER IN RESPONSE TO THE PRESSURE OF A FLUID THROUGH EITHER PORT AND INTO ONE SUBCHAMBER WHEREBY TO FORCE A FLUID IN THE OTHER SUBCHAMBER OUT THROUGH THE PASSAGE THEREFOR; SAID PISTON ENGAGEABLE AT SAID ONE END OF SAID CHAMBER WITH SAID FIRST MEANS ROD TO EFFECT OPERATION OF SAID FIRST MEANS PRIOR TO CONTINUED MOVEMENT OF SAID PISTON TOWARD SAID CHAMBER ONE END, AND ENGAGEABLE AT SAID OPPOSITE END FO SAID CHAMBER WITH SAID SECOND MEANS ROD TO EFFECT OPERATION OF SAID SECOND MEANS PRIOR TO CONTINUED MOVEMENT OF SAID PISTON TOWARD SAID CHAMBER OPPOSITE END, RESPECTIVE OPERATION OF EITHER SAID FIRST MEANS AND SAID SECOND MEANS BEING PROPORTIONAL TO THE RESPECTIVE POSITION OF SAID PISTON AND SAID ROD ENGAGED THEREBY, WHEREBY THE ENTRY OF FLUID INTO ONE SUB-CHAMBER AND THE DISCHAGE OF FLUID FROM THE OPPOSITE SUB-CHAMBER IS PROGRESSIVELY DECREASED AS SAID PISTON CONTINUES TO MOVE INTO ENGAGEMENT WITH A RESPECTIVE CONTAINER END AND AFTER ENGAGEMENT OF SAID PISTON WITH A RESPECTIVE ROD.