초록 ▼

A pressurized dispenser includes an apertured vessel having a pressure chamber. An impervious sack of flexible material is nested within the chamber holding a fluid-like material to be dispensed. A neck as an integral part of said sack has a bore, projects through and is secured to said vessel and s

A pressurized dispenser includes an apertured vessel having a pressure chamber. An impervious sack of flexible material is nested within the chamber holding a fluid-like material to be dispensed. A neck as an integral part of said sack has a bore, projects through and is secured to said vessel and suspends the sack within the vessel, said neck defining a valve housing. A valve retainer encloses and overlies said neck and is secured to the vessel and contains an apertured primary valve gasket which is sealed over the neck and includes an apertured valve seat. A movable dispensing valve stem extends into the neck bore and projects out through the retainer and includes a valve stem normally biased against the valve seat and a nozzle. Pressurized gas is sealed within the pressure chamber for applying continuous pressure over the sack so that manual unseating of the valve stem releases controlled quantities of a fluid-like material through the neck, valve stem and nozzle. A modification includes normally-closed bleed passages formed in the neck interconnecting the pressure chamber and the neck bore for releasing limited quantities of pressurized gas through the nozzle for clearing the nozzle passage of residue material. The valve retainer, primary valve gasket, valve stem, together with a product-sealing gasket, a bleeder disc and a spring, provide a component assembly of universal construction adapted for use with substantially all pressurized dispensers and assembled sacks regardless of the size of the sack.

대표청구항 ▼

A pressurized dispenser comprising an apertured vessel having a pressure chamber; at least one impervious sack of flexible material loosely nested and suspended within said chamber and spaced from the walls thereof holding a fluid-like material to be dispensed; a neck on one end of and integral with

A pressurized dispenser comprising an apertured vessel having a pressure chamber; at least one impervious sack of flexible material loosely nested and suspended within said chamber and spaced from the walls thereof holding a fluid-like material to be dispensed; a neck on one end of and integral with said sack having a bore, projected through and secured to said vessel, suspending said sack within said vessel; said neck defining a valve housing; and a valve component assembly and an apertured valve retainer enclosing and overlying said neck and sealingly secured thereto; said valve component assembly projected down into and movably nested in said neck; there being a pressurized propellant sealed within said pressure chamber for applying continuous pressure to said sack over substantially all its exterior surfaces; manual unseating of said valve component assembly releasing controlled quantities of said fluid-like material through said neck and nozzle, said sack walls gradually collapsing until all material therein is dispensed said neck having an annular groove therein; the securing of said neck within said vessel including an annular outturNed lip on said vessel engaging said neck and sealingly nested within said groove; the securing of said valve retainer to said neck including an inturned annular flange means on said retainer engaging said container lip and snugly rested within said groove.