Valve construction of pressurized dispensers

Claim 1

IN A PRESSURIZED CONTAINER FOR DISPENSING VISCOUS AND LUMPY SUBSTANCES, A VALVE CONSTRUCTION COMPRISING, IN COMBINATION: (A) A VALVE HOUSING HAVING A PASSAGE THROUGH WHICH THE DISPENSED SUBSTANCES PASSES, (B) A PAIR OF VALVE MEANS CONTROLLING THE FLOW OF SUBSTANCE THROUGH SAID PASSAGE AT SEPARATED INNER AND OUTER POINTS, SAID VALVE MEANS INCLUDING MOVABLE MEMBERS, AND (C) COMMON ACTUATOR MEANS CONNECTING THE MOVABLE MEMBERS OF THE VALVE MEANS FOR SIMULTANEOUS MOVEMENT, (D) SAID VALVE MEANS BEING OPEN AT THE SAME TIME FOR ONE POSITION OF THE ACTUATOR MEANS AND BEING CLOSED AT THE SAME TIME FOR ANOTHER POSITION OF THE ACTUATOR MEANS, (E) SAID HOUSING BEING OF RESILIENT PLASTIC MATERIAL, (F) THE INNER VALVE MEANS COMPRISING: (1) A BOTTOM OPENING IN THE HOUSING, SAID OPENING HAVING A SHARP STEPPED EDGE, (2) A CYLINDRICAL RESILIENT PLASTIC VALVE HEAD ON THE ACTUATOR MEANS, RECEIVABLE AND CLOSELY SEALINGLY FITTING IN THE SAID STEPPED OPENING OF THE HOUSINGING, (G) THE OUTER VALVE MEANS COMPRISING: (1) A RESILIENT VALVE WASHER CLAMPED AGAINST THE OUTER END OF THE VALVE HOUSING, (2) AN ANNULUS CARRIED BY THE SAID COMMON ACTUATOR MEANS, (H) A TRANSVERSE END WALL ON THE ACTUATOR MEANS, SPANNING AND CLOSING THE BORE OF THE VALVE ANNULUS, (I) A RIGID VALVE WASHER IN THE HOUSING AT THE SAID BOTTOM OPENING THEREOF AND ENGAGED WITH THE HOUSING BOTTOM, SAID WASHER HAVING A SHARP INNER EDGE, (J) SAID CYLINDRICAL VALVE HEAD BEING RECEIVABLE IN AND CLOSELY SEALINGLY FITTING THE OPENING OF THE RIGID WASHER, (K) SAID RIGID WASHER AND THE STEPPED EDGE OF THE BOTTOM OPENING FORMING BETWEEN THEN AN ANNULAR SEALING SPACE FOR TRAPPING AND HOLDING SUBSTANCE FROM THE CONTAINER, (L) SAID PLASTIC VALVE HEAD, WHEN SEALINGLY ENGAGING THE RIGID WASHER AND THE STEPPED EDGE OF THE BOTTOM HOUSING OPENING, EFFECTING A CLOSURE OF SAID ANNULAR SEALING SPACE AND PREVENTING EGRESS OF TRAPPED SUBSTANCE THEREFROM.