Dispensing container

Claim 1

A DISPENSING CONTAINER FOR VISCOUS FLUIDS COMPRISING A FLEXIBLE TUBULAR CONTAINER HAVING A DISPENSING OUTLET AT ITS FORWARD END AND A CAP FORMING AN ARITIGHT CLOSURE RECEIVED IN SECURED RELATION THEREON, A FLAT SEAL EXTENDING ACROSS SAID CONTAINER AT ITS REAR END, A GENERALLY ROUND PISTON MEMBER WITHIN THE CONTAINER BEHIND THE CONTENTS THEREOF AND CLOSELY FITTING THE INTERIOR THEREOF TO FORCE SAID CONTENTS OUT OF THE DISPENSING OUTLET WHEN SAID PISTON IS DRIVEN FORWARDLY, THE AREA OF THECONTAINER FROM THE PISTON REAR WARDLY TO THE FLAT SEAL BEING TAPERED AND PROVIDING AN AIR SPACE, THE CROSS SECTION SHAPE OF THE CONTAINER IN SAID TAPERED AREA PROGRESSIVELY DECREASING IN ROUNDNESS AS THE FLAT SEAL IS APPROACHED, THEREBY OFFERING INCREASING RESISTANCE TO REARWARD TRAVEL OF THE GENERALLY ROUND PISTON IN THE EVENT THAT SQUEEZING PRESSURE IS APPLIED TO THE CONTAINER ADJACENT ITS FORWARD END, SAID TAPERED AREA FO THE CONTAINER HAVING A SMALL OPENING WHICH CAN BE CLOSE BY A FINGER OF THE USER WHEN APPLYING SQUEEZING ACTING TO SAID AREA TO DEVELOP PRESSURE THEREIN AND DRIVE THE PISTON FORWARD.