Fluid dispenser

Claim 1

A MANUAL FLUID DISPENSER COMPRISING AN UPSTANDING SHELL HAVING AN UPSTANDING WALL CIRCULAR IN CROSS SECTION, A HANDLE CONNECTED TO SAID SHELL, A FLOOR NEAR THE BASE OF SAID SHELL SURROUNDING AN OPENING IN THE BASE OF SAID SHELL, A RESILIENT DEFORMABLE CONCAVE PLUNGER ADAPTED TO REST ON ITS PERIPHERAL EDGE ON SAID FLOOR, THE WALL OF SAID SHELL RESTRAINING SAID PLUNGER SO THAT SAID OPENING IS COVERED FOR ALL POSITIONS OF SAID PLUNGER, A RESILIENT DIFFUSOR VALVE RELEASABLY CONNECTED TO SAID SHELL IN SAID OPENING IN THE BASE OF SAID SHELL BENEATH SAID PLUNGER, SAID PLUNGER, SAID SHELL AND SAID DIFFUSOR VALVE COOPERATING TO FORM A CHAMBER, SAID DIFFUSOR VALVE DEFINING AT LEAST ONE SLIT, SAID PLUNGER DEFINING A PLURALITY OF OPENINGS, A RESILIENT FLAPPER VALVE RELEASABLY CONNECTED TO THE CHAMBER SIDE OF SAID PLUNGER AND COVERING SAID PLUNGER OPENINGS, A RECIPROCATABLE ROD CONNECTED TO SAID PLUNGER FOR DEFORMING SAID PLUNGER AND FOR REDUCING THE VOLUME OF SAID CHAMBER, AND MEANS ADJACENT SAID HANDLE FOR RECIPROCATING SAID ROD, WHEREBY WHEN SAID ROD IS RECIPROCATED AND SAID PLUNGER IS DEFORMED THE FLAPPER VALVE PREVENTS THE ESCAPE OF THE CHAMBER''S CONTENTS THROUGH SAID OPENINGS AND THE CONTENTS OF SAID CHAMBER ARE DISPENSED THROUGH SAID SLIT AND WHEN SAID RECIPROCATING MEANS ARE RELEASED THE FLAPPER VALVE OPENS TO ALLOW A PREDETERMINED FLOW INTO SAID CHAMBER AS SAID PLUNGER RESILIENTLY RETURNS TO ITS UNDEFORMED CONCAVE CONFIGURATION.