Spring-valve member in pressurized two fluid dispenser

Claim 2

A valve member for a pressurized fluid container having a valve stem slidably mounted therein, said valve stem having a port, comprising a longitudinal tubular portion mounted on and sealingly surrounding the valve stem and said port; an annular flexing flange extending transversely at one end of the tubular portion and adapted to be secured in fixed sealed position at its outer periphery with relation to said container, said tubular portion having an outer annular groove adjacent said flexing flange to facilitate flexing when said valve stem is moved; and an annular sealing rim close to the other end of the tubular portion having a longitudinally facing sealing surface for producing a seal; said valve member being integrally formed of resilient material of a compliance such that a discernible movement of the valve stem distorts the valve member sufficiently to insure full return of the valve stem and closure of the port.

Claim 3

A pressurized dispenser having a rigid external container for a pressurized primary fluid and an internal holder for a secondary fluid responsive in volume to the pressure of the primary fluid, comprising a vertically slidable valve stem having a top port for primary fluid and a bottom port for secondary fluid; means for sealing the top port when the valve stem is in up position; and a valve member having a longitudinal tubular portion mounted on and sealingly surrounding the valve stem; an annular flexing flange extending transversely at one end of the tubular portion and secured in fixed sealed position at its outer periphery with relation to said container, said tubular portion having an outer annular groove adjacent said flexing flange to facilitate flexing when sad valve stem is moved; and an annular sealing rim close to the other end of the tubular portion having a longitudinally outwardly facing sealing surface for producing a seal; said valve member being integrally formed of resilient material of a compliance such that a discernible movement of the valve stem distorts the valve member sufficiently to insure full return of the valve stem and closure of the ports.

Claim 4

A pressurized dispenser having a rigid external container for a pressurized primary fluid and an internal holder for a secondary fluid responsive in volume to the pressure of the primary fluid, comprising a vertically slidable valve stem having a top port for primary fluid and a bottom port for secondary fluid; means for sealing the top port when the valve stem is in up position; and a valve member having a longitudinal tubular portion mounted on and sealingly surrounding the valve stem; an annular flexing flange extending transversely at one end of the tubular portion and secured in fixed sealed position at its outer periphery with relation to said container, said tubular portion having an outer annular groove adjacent said flexing flange to facilitate flexing when sad valve stem is moved; and an annular sealing rim close to the other end of the tubular portion having a longitudinally outwardly facing sealing surface for producing a seal; said valve member being integrally formed of resilient material of a compliance such that a discernible movement of the valve stem distorts the valve member sufficiently to insure full return of the valve stem and closure of the ports.

Claim 5

A pressurized dispenser having rigid container for a pressurized fluid and an internal holder for a secondary fluid responsive in volume to the pressure of the primary fluid, comprising a valve head attached at its upper end to the container and at its lower end to said holder, said valve head having an axial passage therethrough with an interior annular ledge intermediate its ends providing a downwardly facing sealing ring; a valve stem slidably mounted in said valve head and having a minute top port for primary fluid and a minute bottom port for secondary fluid and having a lower annular undercut section extending upwardly from the bottom port and an upper annular groove at said top port; a resilient sealing washer mounted in said groove sealing said top port with its outer annular periphery clamped between said valve head and the container; and a resilient valve member having a tubular portion seated in said undercut section with a bottom terminal annular flexing flange having its outer annular periphery clamped between the top of the holder and the valve head, the tubular portion immediately above the flexing flange having an annular outer groove to facilitate flexing when said valve stem is moved, an annular rim close to the upper end of the tubular portion having an upwardly facing sealing surface for sealing engagement with the ring of said valve head to define a primary fluid lower chamber with the flexing flange and a primary fluid upper chamber with said sealing washer, said valve head having a hole providing free fluid communication between said container and said lower chamber whereby upon a discernible downward movement of the valve stem the annular rim opens the lower chamber to the upper chamber and primary fluid flows past the distorted washer, through the top port, and into the valve stem and the secondary fluid flows past the distorted flexing flange, through the bottom port, and into the valve stem, said valve member being integrally formed of resilient material of a compliance such that distortion to a degree to produce a discernible movement of the valve stem is possible and sufficient energy is stored to insure full return and closure of the ports.

Claim 6

A pressurized dispenser having rigid container for a pressurized fluid and an internal holder for a secondary fluid responsive in volume to the pressure of the primary fluid, comprising a valve head attached at its upper end to the container and at its lower end to said holder, said valve head having an axial passage therethrough with an interior annular ledge intermediate its ends providing a downwardly facing sealing ring; a valve stem slidably mounted in said valve head and having a minute top port for primary fluid and a minute bottom port for secondary fluid and having a lower annular undercut section extending upwardly from the bottom port and an upper annular groove at said top port; a resilient sealing washer mounted in said groove sealing said top port with its outer annular periphery clamped between said valve head and the container; and a resilient valve member having a tubular portion seated in said undercut section with a bottom terminal annular flexing flange having its outer annular periphery clamped between the top of the holder and the valve head, the tubular portion immediately above the flexing flange having an annular outer groove to facilitate flexing when said valve stem is moved, an annular rim close to the upper end of the tubular portion having an upwardly facing sealing surface for sealing engagement with the ring of said valve head to define a primary fluid lower chamber with the flexing flange and a primary fluid upper chamber with said sealing washer, said valve head having a hole providing free fluid communication between said container and said lower chamber whereby upon a discernible downward movement of the valve stem the annular rim opens the lower chamber to the upper chamber and primary fluid flows past the distorted washer, through the top port, and into the valve stem and the secondary fluid flows past the distorted flexing flange, through the bottom port, and into the valve stem, said valve member being integrally formed of resilient material of a compliance such that distortion to a degree to produce a discernible movement of the valve stem is possible and sufficient energy is stored to insure full return and closure of the ports.

Claim 7

A pressurized dispenser as defined in claim 3 and wherein said sealing washer is similar to said valve member but seated in its own upper undercut section of the valve stem in inverted position, with sad top port being closed by an annular rim of the sealing washer.

Claim 8

A pressurized dispenser as defined in claim 4 and wherein said valve member and said sealing washer each include a nose extending from the annular rim and loosely positioned in a bearing in the valve head.