Multiple dosage hypodermic syringe

Claim 1

A MULTIPLE DOSAGE HYPODERMIC SYRINGE COMPRISING AN ELONGATED, HOLLOW BODY ADAPTED TO BE GRASPED BY A USER, A TUBULAR MEMBER TELESCOPINGLY MOUNTED WITHIN SAID BODY AND HAVING AN INNER END AND AN OUTER END, AN EXPANSIBLE AND CONTRACTABLE CONTAINER WITHIN SAID TUBULAR MEMBER HAVING ONE END MOVABLE WITH THE OUTER END OF SAID TUBULAR MEMBER AND ITS OTHER END FIXED WITH RESPECT TO SAID BODY, SAID OTHER END OF SAID CONTAINER BEING ADAPTED TO BE CONNECTED TO A RESERVOIR OF SERUM TO BE INJECTED, AN INJECTION NEEDLE MOUNTED ON THE OUTER END OF SAID TUBULAR MEMBERS AND COMMUNICATING WITH THE INTERIOR OF SAID CONTAINER, FIRST ONE-WAY VALVE MEANS BETWEEN SAID CONTAINER AND RESERVOIR PREVENTING SERUM IN SAID CONTAINER FROM FLOWING INTO SAID RESERVOIR UPON TELESCOPING MOVEMENT OF SAID BODY OVER SAID TUBULAR MEMBER TO CONTRACT SAID CONTAINER AND EJECT SERUM THROUGH SAID NEEDLE, SECOND ONE-WAY VALVE MEANS BETWEEN SAID CONTAINER AND SAID INJECTION NEEDLE PREVENTING REVERSE FLOW THROUGH THE LATTER, WHEREBY EXTENSION OF SAID TUBULAR MEMBER FROM SAID BODY CAUSING SAID CONTAINER TO EXPAND AND FILL WITH SERUM FOR ANOTHER INJECTION.