Patent ID: 8919615

Claim:
A dispenser ( 20 ) comprising: a container body ( 22 ); a closure valve assembly ( 24 ) comprising: a seat ( 100 ) having an opening ( 122 ); a valve element ( 90 ) shiftable between: an open position depressed clear of the opening; and a closed position closing the opening; and a plurality of radially inwardly directed petals ( 106 ) supporting the valve element ( 90 ) with flex spring bias toward the closed position; and a cap ( 28 ) having: a closed condition depressing the valve element to the valve element's open position; and an open condition disengaged from the valve element, wherein the closure valve assembly comprises a main body ( 50 ) as: an internally threaded boss ( 52 ) receiving an externally threaded neck ( 36 ) of the container; an externally threaded neck ( 62 ) received in an internally threaded sidewall ( 70 ) of the cap in the closed condition; an annular wall ( 102 ) within the neck cooperating with the neck to define an annular channel; and said plurality of petals ( 106 ) directed radially inward from the annular wall.