Dispensing valve for packaging

A dispensing package for fluid products, comprising:

• a container shaped to retain a selected fluid product therein, and including a discharge opening;
• a dispensing valve for controlling the flow of the fluid product from the container, including:
• a marginal valve flange sealing about the discharge opening of said container;
• a valve head having a marginal edge, interior and exterior sides, and an orifice extending therebetween which opens to permit fluid flow therethrough in response to a predetermined discharge pressure within said container, and closes to shut off fluid flow therethrough upon removal of the predetermined discharge pressure;
• a connector sleeve having a resiliently flexible construction, with one end thereof connected with said valve flanges, and an opposite end thereof connected with said valve head adjacent the marginal edge thereof, whereby when pressure within said container is raised above the predetermined discharge pressure, said valve head shifts outwardly in a manner which causes said connector sleeve to double over and extend rollingly, and thereby apply a torque to said valve head which assists in opening said orifice;
• and wherein
• said valve head shifts into a generally convex orientation when said orifice is open;
• and said orifice shifts between a fully open position and a fully closed position, and is configured such that when said valve head assumes its generally convex orientation, said orifice automatically shifts to the fully open position, such that the rate of fluid flow through said orifice is relatively constant, even when pressures within said container vary between normal predetermined amounts.

A dispensing valve adapted for use in conjunction with fluid product packaging of the type having a container with a discharge opening therein, comprising:

• a marginal valve flange shaped to seal about the discharge opening of the container;
• a valve head having a marginal edge, interior and exterior sides, and an orifice extending therebetween which opens to permit fluid flow therethrough in response to communication with a predetermined discharge pressure, and closes to shut off fluid flow therethrough upon removal of the predetermined discharge pressure;
• a connector sleeve having a resiliently flexible construction, with one end thereof connected with said valve flange, and an opposite end thereof connected with said valve head adjacent the marginal edge thereof, whereby when pressure in excess of the predetermined discharge pressure is applied to the interior side of said valve head, said valve head shifts outwardly in a manner which causes said connector sleeve to double over and extend rollingly, and thereby apply a torque to said valve head which assists in opening said orifice;
• and wherein
• said valve head exterior side includes a curved portion configured to assume a generally concave orientation when said orifice is closed, and a generally convex orientation when said orifice is open, such that inward compression and torque applied to said valve head by said connector sleeve combine to resiliently maintain said orifice open, whereby that pressure required to maintain fluid flow through said orifice is substantially less than said predetermined threshold pressure, so as to provide greater ease of dispensing and flow control.

A dispensing valve adapted for use in conjunction with fluid product packaging of the type having a container with a discharge opening therein, comprising:

• a marginal valve flange shaped to seal about the discharge opening of the container;
• a valve head having a marginal edge, interior and exterior sides, and an orifice extending therebetween which opens to permit fluid flow therethrough in response to communication with a predetermined discharge pressure, and closes to shut off fluid flow therethrough upon removal of the predetermined discharge pressure;
• a connector sleeve having a resiliently flexible construction, with one end thereof connected with said valve flange, and an opposite end thereof connected with said valve head adjacent the marginal edge thereof, whereby when pressure in excess of the predetermined discharge pressure is applied to the interior side of said valve head, said valve head shifts outwardly in a manner which causes said connector sleeve to double over and extend rollingly, and thereby apply a torque to said valve head which assists in opening said orifice;
• and wherein
• said valve head shifts into a generally convex orientation when said orifice is open;
• and
• said orifice shifts between a fully open position and a fully closed position, and is configured such that when said valve head assumes its generally convex orientation, said orifice automatically shifts to the fully open position, such that the rate of fluid flow through said orifice is relatively constant, even when pressures within said container vary between normal predetermined amounts.