System and method for one-way spray aerosol tip

A fluid-dispensing mechanism for an aerosol-type dispenser in fluid communication with a liquid reservoir, comprising:

• a flexible nozzle portion having an outlet portion for dispensing liquid content of said dispenser, said outlet portion having a substantially tubular shape and a wall thickness which decreases from a first point along a direction of elongated axis of symmetry of said nozzle mechanism toward a tip of said flexible nozzle portion;
• a flexible body portion connected to said flexible nozzle portion, said body portion having a substantially tubular shape and a wall thickness which decreases from a second point along said axial direction toward said tip of said flexible nozzle portion;
• a rigid shaft member received within said flexible nozzle portion and said flexible body portion, a first portion of said rigid shaft member interfacing said outlet portion to form a first normally-closed valve, said first portion of said rigid shaft and interior of said flexible nozzle portion defining a swirling chamber for collecting liquid from said liquid reservoir prior to expulsion via said outlet portion, a second portion of said rigid shaft member interfacing said flexible body portion to form a second normally-closed valve;
• and
• a rigid housing surrounding said flexible nozzle portion and said flexible body portion and exposing said outlet portion;
• wherein a content of said fluid reservoir is channeled into said swirling chamber from said liquid reservoir via said second normally-closed valve upon application of sufficient pressure to open said second normally-closed valve, and wherein said liquid in said chamber is expelled via said first normally-closed valve upon reaching a pressure sufficient to radially deform said outlet portion to open said first normally-closed valve, and wherein said rigid housing prevents deformation of said outlet portion along said axial direction during expulsion of said liquid content of said swirling chamber via said outlet portion.

A method of generating an aerosol-type fluid discharge from a dispenser in fluid communication with a liquid reservoir, said dispenser comprising a flexible nozzle portion having an outlet portion for dispensing said liquid content, said outlet portion having a wall thickness which decreases from a first point along a direction of elongated axis of symmetry of said nozzle mechanism toward a tip of the flexible nozzle portion, a first portion of a rigid shaft member received within the flexible nozzle portion and interfacing said outlet portion to form a first normally-closed valve, said first portion of said rigid shaft member and interior of said flexible nozzle portion defining a swirling chamber for said liquid content prior to expulsion via said outlet, said flexible nozzle portion further comprising a circumferentially positioned fluid channel defining a portion of a fluid communication path between said liquid reservoir and said swirling chamber, and a rigid housing surrounding said flexible nozzle portion and exposing said outlet portion, which method comprises:

• channeling liquid content of said liquid reservoir into said fluid communication path by application of pressure;
• channeling said liquid content into said swirling chamber via said circumferentially positioned fluid channel by application of pressure, thereby creating swirling movement of said liquid content in said swirling chamber;
• and
• expelling said liquid content of said swirling chamber through said outlet via said first normally-closed valve by application of pressure sufficient to radially deform said outlet portion to open said first normally-closed valve while substantially preventing deformation of said outlet portion along the axial direction by relative urging of said rigid housing;
• wherein said radial deformation of said outlet portion to open said first normally-closed valve comprises sequential deformation of portions of said outlet portion interfacing said first portion of said rigid shaft member along the axial direction, whereby an initial point of separation along the axial direction between said outlet portion and said first portion of said rigid shaft member is substantially closed when a final point of separation along the axial direction between said outlet portion and said first portion of said rigid shaft member is open.