Metering valve

Claim 1

A METERING VALVE FOR SELF-PRESSURIZED AEROSOL FLUID PRODUCTS CONSTITUTING MEANS FOR TEMPORARILY ISOLATING AND DISCHARGING A PREDETERMINED PORTION OF FLUID PRODUCT FROM A LARGER BODY THEREOF IN A PRESSURIZED CONTAINER, SAID VALVE HAVING A HOUSING, MEANS FOR MOUNTING SAID HOUSING IN THE MOUTH OF A CONTAINER, SAID HOUSING HAVING AN INLET FOR COMMUNICATION WITH THE INTERIOR OF THE CONTAINER AND HAVING AN OUTLET FOR THE DISCHARGE OF FLUID PRODUCT FROM THE CONTAINER, MEANS IN COMBINATION WITH SAID HOUSING FOR ISOLATING A PREDETERMINED PORTION OF AEROSOL PRODDUCT INCLUDING A RESILIENT THIMBLE-SHAPED MEMBER DISPOSED CONCENTRICALLY OF SAID HOUSING TELESCOPING RELATION THERETO, MANUALLY ACTUATED MEANS FOR CONTROLLING THE RELEASE OF SAID PREDETERMINED PORTION OF AEROSOL PRODUCT AND COMPRISING AN AXIALLY RECIPROCABLE CORE LOCATED IN SAID HOUSING OUTLET AND HAVING A DISCHARGE PORT AND ASSOCIATED FLUID PASSAGE, FLUID SEAL MEANS RETAINED BY SAID HOUSING MOUNTING MEANS AND SURROUNDING SAID CORE AT SAID OUTLET NORMALLY PREVENTING ESCAPE OF FLUID PRODUCT THEREAT, MEANS URGING SAID CORE TO NON-DISPENSING POSITION RELATIVE TO SAID OUTLET SEAL BUT YIELDABLE UPON MANUAL DEPRESSION OF SAID CORE TO MOVE SAID DISCHARGE PORT INTO BY-PASSING POSITION RELATIVE TO SAID SEAL TO ALLOW FLUID PRODUCT TO ESCAPE THROUGH SAID DISCHARGE PORT AND CORE PASSAGE TO ATMOSPHERE, SAID CORE HAVING AN INNER END DISPOSED WITHIN SAID THIMBLE MEMBER AND NORMALLY SPACED FROM THE END WALL THEREOF BUT ENGAGEABLE THEREWITH WHEN SAID CORE IS DEPRESSED, AND AN INLET PORT IN ONE OF SAID HOUSING SAID THIMBLE MEMBERS WHICH IS NORMALLY OPEN BUT WHICH IS CLOSED BY THE AFORESAID ENGAGEMENT BETWEEN SAID INNER CORE END AND SAID THIMBEL WALL PRIOR TO ARRIVAL OT SAID CORE DISCHARGE PORT AT BY-PASSING POSITION RELATIVE TO SAID OUTLET SEAL, FURTHER INWARD TRAVEL TO SAID CORE THEREAFTER BEING PERMITTED BY ELONGATION OF SAID THIMBLE MEMBER TO MOVE SAID CORE TO SAID OUTLET SEAL BY-PASSING POSITION.