Fluid withdrawal device and container

Claim 1

A DEVICE OF THE TYPE DESCRIBED COMPRISING THE COMBINATION OF AN ELONGATE HOLDER OPEN AT THE OPPOSITE ENDS, AN ELONGATE CONTAINER CLOSED AT ONE END AND OPEN AT THE OTHER END AND DIMENSIONED SLIDABLY TO BE RECEIVED WITHIN SAID HOLDER AND HAVING A LENGTH APPROXIMATELY CORRESPONDING TO THE LENGTH OF SAID CONTAINER, A VALVE IN COMMUNICATION WITH THE OPEN END OF THE CONTAINER FOR MAINTAINING A SEALED RELATIONSHIP IN THE INTERIOR THEREOF AND MEANS WITHIN SAID VALVE FOR OPENING AND CLOSING THE VALVE RESPONSIVE TO ENDWISE DISPLACEMENT OF THE CONTAINER RELATIVE TO THE HOLDER SAID MEANS COMPRISING A CUP-SHAPED MEMBER HAVING PORTS IN THE SIDE WALLS SPACED INWARDLY FROM THE OTHER END THEREOF, A PISTON RECEIVED IN SEALING RELATIONSHIP WITHIN SAID CUP-SHAPED MEMBER AND SLIDABLE ENDWISE THEREIN BETWEEN A SEALED POSITION AND AN INNER OPEN POSITION, STOP MEANS ON THE OTHER END OF THE HOLDER IN POSITION TO BE ENGAGED BY SAID PISTON WHEN THE CONTAINER IS DISPLACED TOWARDS THE OTHER END RELATIVE TO THE HOLDER WHEREBY THE PISTON IS DISPLACED IN THE OPPOSITE DIRECTION FROM NORMAL TO OPEN POSITION RESPONSIVE TO SAID ENDWISE MOVEMENT OF THE CONTAINER RELATIVE TO THE HOLDER, COMMUNICATING PASSAGES IN SAID PISTON INCLUDING ONE PASSAGE WHICH EXTENDS LENGTHWISE FROM THE OTHER END PORTION THEREOF TO A PORTION SHORT OF THE OPPOSITE END THEREOF AND A CROSSWISE PASSAGE COMMUNICATING WITH SAID LENGHTWISE PASSAGE AND WHICH EXTENDS LATERALLY IN ENDWISE ALIGNMENT WITH THE PORTS BUT OFFSET TOWARDS THE OTHER END THEREOF WHEN THE PISTON IS IN NORMAL POSITION AND IN CROSSWISE ALIGNMENT FOR COMMUNICATION THEREWITH WHEN THE PISTON IS IN OPERATED POSITION FOR COMMUNICATING THE INTERIOR OF THE CONTAINER WITH THE OPENING THROUGH THE PISTON, MEANS FOR STOPPING THE PISTON WITHIN SAID CUP-SHAPED MEMBER WHEN IN NORMAL POSITION, RESILIENT MEANS COMPRISING FEET FORMED INTEGRALLY WITH SAID PISTON AND ENGAGING THE END OF SAID CUP-SHAPED MEMBER FOR CONSTANTLY URGING SAID PISTON TOWARDS NORMAL POSITION.

Claim 2

A DEVICE OF THE TYPE DESCRIBED COMPRISING THE COMBINATION OF AN ELONGATE HOLDER OPEN AT THE OPPOSITE ENDS, AN ELONGATE CONTAINER CLOSED AT ONE END AND OPEN AT THE OTHER END AND DIMENSIONED SLIDABLY TO BE RECEIVED WITHIN SAID HOLDER AND HAVING A LENGTH APPROXIMATELY CORRESPONDING TO THE LENGTH OF SAID CONTAINER, A VALVE IN COMMUNICATION WITH THE OPEN END OF THE CONTAINER FOR MAINTAINING A SEALED RELATIONSHIP IN THE INTERIOR THEREOF AND MEANS WITHIN SAID VALVE FOR OPENING AND CLOSING THE VALVE RESPONSIVE TO ENDWISE DISPLACEMENT OF THE CONTAINER RELATIVE TO THE HOLDER SAID MEANS COMPRISING A CUP-SHAPED MEMBER HAVING PORTS IN THE SIDE WALLS SPACED INWARDLY FROM THE OTHER END THEREOF, A PISTON RECEIVED IN SEALING RELATIONSHIP WITHIN SAID CUP-SHAPED MEMBER AND SLIDABLE ENDWISE THEREIN BETWEEN A SEALED POSITION AND AN INNER OPEN POSITION, STOP MEANS ON THE OTHER END OF THE HOLDER IN POSITION TO BE ENGAGED BY SAID PISTON WHEN THE CONTAINER IS DISPLACED TOWARDS THE OTHER END RELATIVE TO THE HOLDER WHEREBY THE PISTON IS DISPLACED IN THE OPPOSITE DIRECTION FROM NORMAL TO OPEN POSITION RESPONSIVE TO SAID ENDWISE MOVEMENT OF THE CONTAINER RELATIVE TO THE HOLDER, COMMUNICATING PASSAGES IN SAID PISTON INCLUDING ONE PASSAGE WHICH EXTENDS LENGTHWISE FROM THE OTHER END PORTION THEREOF TO A PORTION SHORT OF THE OPPOSITE END THEREOF AND A CROSSWISE PASSAGE COMMUNICATING WITH SAID LENGHTWISE PASSAGE AND WHICH EXTENDS LATERALLY IN ENDWISE ALIGNMENT WITH THE PORTS BUT OFFSET TOWARDS THE OTHER END THEREOF WHEN THE PISTON IS IN NORMAL POSITION AND IN CROSSWISE ALIGNMENT FOR COMMUNICATION THEREWITH WHEN THE PISTON IS IN OPERATED POSITION FOR COMMUNICATING THE INTERIOR OF THE CONTAINER WITH THE OPENING THROUGH THE PISTON, MEANS FOR STOPPING THE PISTON WITHIN SAID CUP-SHAPED MEMBER WHEN IN NORMAL POSITION, RESILIENT MEANS COMPRISING FEET FORMED INTEGRALLY WITH SAID PISTON AND ENGAGING THE END OF SAID CUP-SHAPED MEMBER FOR CONSTANTLY URGING SAID PISTON TOWARDS NORMAL POSITION.