An aerosol dual-dispensing shutoff valve adapted to dispense a plurality of fluids from separate sources and to shut off automatically upon the depletion of one of the sources

Claim 2

In a dual-dispensing automatic shutoff valve, the combination of: a manually operable fluid-dispensing valve means; first and second pressurized fluid sources communicating with said dispensing valve means; first and second fluid-pressureresponsive automatic shutoff valve means communicating with said dispensing valve means and with said first and second fluid sources, said first and second shutoff valve means being disposed to control the flow of fluids from said first and second sources to said fluid-dispensing valve means, said first and second shutoff valve means being responsive to fluid of said sources, whereby a substantial depletion of either of said sources shuts off flow therefrom to said dispensing valve means; said first source having a liquid material and a gasifying aerosolpropellent fluid; said first shutoff valve means having a pressure-responsive movable wall provided with opposed surfaces, one of said surfaces communicating with said first source; first orifice means intercommunicating with opposed surfaces of said movable wall means and with said dispensing valve means, whereby a pressure differential is created with respect to said opposed surfaces when said dispensing valve means is open, and when said liquid is flowing through said first orifices, and whereby the magnitude of said pressure differential changes when said liquid is exhausted, and when only said gasifying aerosol propellent flows through said first orifices; said movable wall beinG responsive to said pressure-differential change and thereby operable to move said first shutoff valve means toward closed position to shut off communication of one of said sources with said dispensing valve means; said second shutoff valve means disposed and responsive to a change in fluid pressure of said last-mentioned source downstream from said first shut off valve means, said second shut off valve means communicating with fluid from the other of said sources and said second shutoff valve means being disposed to shutoff flow of fluid from said other of said sources to said dispensing valve means.

Claim 3

In a dual-dispensing automatic shutoff valve, the combination of: a manually operable fluid-dispensing valve means; first and second pressurized fluid sources communicating with said dispensing valve means; first and second fluid-pressure-responsive automatic shutoff valve means communicating with said dispensing valve means and with said first and second fluid sources, said first and second shutoff valve means being disposed to control the flow of fluids from said first and second sources to said fluid-dispensing valve means, said first and second shutoff valve means being responsive to fluid of said sources, whereby a substantial depletion of either of said sources shuts off flow therefrom to said dispensing valve means; said first source having a liquid material and a gasifying aerosol-propellent fluid; said first shutoff valve means having a pressure-responsive movable wall provided with opposed surfaces, one of said surfaces communicating with said first source; first orifice means intercommunicating with opposed surfaces of said movable wall means and with said dispensing valve means; second orifice means communicating with said dispensing valve means downstream from said first orifice means and disposed to be shutoff from communication with said dispensing valve means by operation of said second shutoff valve means; whereby a pressure differential is created with respect to said opposed surfaces when said dispensing valve means is open, and when said liquid is flowing through said first and second orifice means, and whereby the magnitude of said pressure differential changes when said liquid is exhausted, and when only said gasifying aerosol propellent flows through said first and second orifice means; said movable wall being responsive to said pressure-differential change and thereby operable to move said first shutoff valve means toward closed position to shutoff communication of one of said sources with said dispensing valve means; said second shutoff valve means disposed and responsive to a change in fluid pressure of said last-mentioned source downstream from said first shutoff valve means, said second shutoff valve means communicating with fluid from the other of said sources and said second shutoff valve means being disposed to shutoff flow of fluid from said other of said sources to said dispensing valve means.

Claim 4

In a dual-dispensing automatic shutoff valve, the combination of: a manually operable fluid-dispensing valve means; first and second pressurized fluid sources communicating with said dispensing valve means; first and second fluid-pressure-responsive automatic shutoff valve means communicating with said dispensing valve means and with said first and second fluid sources, said first and second shutoff valve means being disposed to control the flow of fluids from said first and second sources to said fluid-dispensing valve means, said first and second shutoff valve means being responsive to fluid of said sources, whereby a substantial depletion of either of said sources shuts off flow therefrom to said dispensing valve means; said first source having a liquid material and a gasifying aerosol-propellent fluid; said first shutoff valve means having a pressure-responsive movable wall provided with opposed surfaces, one of said surfaces communicating with said first source; first orifice means intercommunicating with opposed surfaces of said movable wall means and with said dispensing valve means; second orifice means communicating with said dispensing valve means downstream from said first orifice means and disposed to be shutoff from communication with said dispensing valve means by operation of said second shutoff valve means; whereby a pressure differential is created with respect to said opposed surfaces when said dispensing valve means is open, and when said liquid is flowing through said first and second orifice means, and whereby the magnitude of said pressure differential changes when said liquid is exhausted, and when only said gasifying aerosol propellent flows through said first and second orifice means; said movable wall being responsive to said pressure-differential change and thereby operable to move said first shutoff valve means toward closed position to shutoff communication of one of said sources with said dispensing valve means; said second shutoff valve means disposed and responsive to a change in fluid pressure of said last-mentioned source downstream from said first shutoff valve means, said second shutoff valve means communicating with fluid from the other of said sources and said second shutoff valve means being disposed to shutoff flow of fluid from said other of said sources to said dispensing valve means.

Claim 5

In a dual-dispensing automatic shutoff valve, the combination of: a manually operable fluid-dispensing valve means; first and second pressurized fluid sources communicating with said dispensing valve means; first and second fluid-pressure-responsive automatic shutoff valve means communicating with said dispensing valve means and with said first and second fluid sources, said first and second shutoff valve means being disposed to control the flow of fluids from said first and second sources to said fluid-dispensing valve means, said first and second shutoff valve means being responsive to fluid of said sources, whereby a substantial depletion of either of said sources shuts off flow therefrom to said dispensing valve means; said first source having a liquid material and a gasifying aerosol-propellent fluid; said first shutoff valve means having a pressure-responsive movable wall provided with opposed surfaces, one of said surfaces communicating with said first source; first orifice means intercommunicating with opposed surfaces of said movable Wall means and with said dispensing valve means, whereby a pressure differential is created with respect to said opposed surfaces when said dispensing valve means is open, and when said liquid is flowing through said first orifice, and whereby the magnitude of said pressure differential changes when said liquid is exhausted, and when only said gasifying aerosol propellent flows through said first orifice; said movable wall being responsive to said pressure differential changes and thereby operable to move said first shutoff communication of one of said sources with said dispensing valve means; said second shutoff valve means disposed and responsive to a change in fluid pressure of said last-mentioned source downstream from said first shutoff valve means, said second shutoff valve means communicating with fluid from the other of said sources and said second shutoff valve means being disposed to shutoff flow of fluid from said other of said sources to said dispensing valve means; said second shutoff valve means having a movable pressure-responsive wall means provided with opposed surfaces; one of said last-mentioned opposed surfaces responsive to pressure of fluid downstream from said first orifice means and the other of said last mentioned surfaces being responsive to fluid pressure downstream from said first shutoff valve means, whereby a reduction in pressure of said fluid downstream from said first valve means causes said second valve means to move toward closed position and to shutoff fluid flow from said first orifice to said dispensing valve means.

Claim 6

In a dual-dispensing automatic shutoff valve, the combination of: a manually operable fluid-dispensing valve means; first and second pressurized fluid sources communicating with said dispensing valve means; first and second fluid-pressure-responsive automatic shutoff valve means communicating with said dispensing valve means and with said first and second fluid sources, said first and second shutoff valve means being disposed to control the flow of fluids from said first and second sources to said fluid-dispensing valve means, said first and second shutoff valve means being responsive to fluid of said sources, whereby a substantial depletion of either of said sources shuts off flow therefrom to said dispensing valve means; said first source having a liquid material and a gasifying aerosol-propellent fluid; said first shutoff valve means having a pressure-responsive movable wall provided with opposed surfaces, one of said surfaces communicating with said first source; first orifice means intercommunicating with opposed surfaces of said movable Wall means and with said dispensing valve means, whereby a pressure differential is created with respect to said opposed surfaces when said dispensing valve means is open, and when said liquid is flowing through said first orifice, and whereby the magnitude of said pressure differential changes when said liquid is exhausted, and when only said gasifying aerosol propellent flows through said first orifice; said movable wall being responsive to said pressure differential changes and thereby operable to move said first shutoff communication of one of said sources with said dispensing valve means; said second shutoff valve means disposed and responsive to a change in fluid pressure of said last-mentioned source downstream from said first shutoff valve means, said second shutoff valve means communicating with fluid from the other of said sources and said second shutoff valve means being disposed to shutoff flow of fluid from said other of said sources to said dispensing valve means; said second shutoff valve means having a movable pressure-responsive wall means provided with opposed surfaces; one of said last-mentioned opposed surfaces responsive to pressure of fluid downstream from said first orifice means and the other of said last mentioned surfaces being responsive to fluid pressure downstream from said first shutoff valve means, whereby a reduction in pressure of said fluid downstream from said first valve means causes said second valve means to move toward closed position and to shutoff fluid flow from said first orifice to said dispensing valve means.

Claim 7

In a dual-dispensing automatic shutoff valve, the combination of: a manually operable fluid-dispensing valve means; first and second pressurized fluid sources communicating with said dispensing valve means; first and second fluid-pressure-responsive automatic shutoff valve means communicating with said dispensing valve means and with said first and second fluid-pressure-responsive automatic shutoff valve means communicating with said dispensing valve means and with said first and second fluid sources, said first and second shutoff valve means being disposed to control the flow of fluids from said first and second sources to said fluid-dispensing valve means, said first and second shutoff valve means being responsive to fluid of said sources, whereby a substantial depletion of either of said sources shuts off flow therefrom to said dispensing valve means; said first source having a liquid material and a gasifying aerosol-propellent fluid; said first shutoff valve means having a pressure-responsive movable wall provided with opposed surfaces, one of said surfaces communicating with said first source; first orifice means intercommunicating with opposed surfaces of said movable wall means and with said dispensing valve means; second orifice means communicating with said dispensing valve means downstream from said first orifice means and disposed to be shutoff from communication with said dispensing valve means by operation of said second shutoff valve means; whereby a pressure differential is created with respect to said opposed surfaces when said dispensing valve means is open, and when said liquid is flowing through said first and second orifice means, and whereby the magnitude of said pressure differential changes when said liquid is exhausted, and when only said gasifying aerosol propellent flows through said first and second orifice means; said movable wall being responsive to said pressure-differential change and thereby operable to move said first shutoff valve means toward closed position to shutoff communication of one of said sources with said dispensing valve means; said second shutoff valve means disposed and responsive to a change in fluid pressure of said last mentioned source downstream from said first shutoff valve means, said second shutoff valve means communicating with fluid from the other of said sources and said second shutoff valve means being disposed to shut off flow of fluid from said other of said Sources to said dispensing valve means; said second shutoff valve means having a movable pressure-responsive wall means provided with opposed surfaces; one of said last-mentioned opposed surfaces responsive to pressure of fluid downstream from said first orifice means and the other of said last-mentioned surfaces being responsive to fluid pressure downstream from said first shutoff valve means, whereby a reduction in pressure of said fluid downstream from said first valve means causes said fluid downstream from said first valve means causes said second valve means to move toward closed position, and to shutoff fluid flow from said first orifice to said second orifice means and said dispensing valve means; and third orifice means disposed between said first shutoff valve means and said dispensing valve means for maintaining a desired fluid pressure in communication with said other of said surfaces of said movable wall of said second shutoff valve means.

Claim 8

In a dual-dispensing automatic shutoff valve, the combination of: a manually operable fluid-dispensing valve means; first and second pressurized fluid sources communicating with said dispensing valve means; first and second fluid-pressure-responsive automatic shutoff valve means communicating with said dispensing valve means and with said first and second fluid-pressure-responsive automatic shutoff valve means communicating with said dispensing valve means and with said first and second fluid sources, said first and second shutoff valve means being disposed to control the flow of fluids from said first and second sources to said fluid-dispensing valve means, said first and second shutoff valve means being responsive to fluid of said sources, whereby a substantial depletion of either of said sources shuts off flow therefrom to said dispensing valve means; said first source having a liquid material and a gasifying aerosol-propellent fluid; said first shutoff valve means having a pressure-responsive movable wall provided with opposed surfaces, one of said surfaces communicating with said first source; first orifice means intercommunicating with opposed surfaces of said movable wall means and with said dispensing valve means; second orifice means communicating with said dispensing valve means downstream from said first orifice means and disposed to be shutoff from communication with said dispensing valve means by operation of said second shutoff valve means; whereby a pressure differential is created with respect to said opposed surfaces when said dispensing valve means is open, and when said liquid is flowing through said first and second orifice means, and whereby the magnitude of said pressure differential changes when said liquid is exhausted, and when only said gasifying aerosol propellent flows through said first and second orifice means; said movable wall being responsive to said pressure-differential change and thereby operable to move said first shutoff valve means toward closed position to shutoff communication of one of said sources with said dispensing valve means; said second shutoff valve means disposed and responsive to a change in fluid pressure of said last mentioned source downstream from said first shutoff valve means, said second shutoff valve means communicating with fluid from the other of said sources and said second shutoff valve means being disposed to shut off flow of fluid from said other of said Sources to said dispensing valve means; said second shutoff valve means having a movable pressure-responsive wall means provided with opposed surfaces; one of said last-mentioned opposed surfaces responsive to pressure of fluid downstream from said first orifice means and the other of said last-mentioned surfaces being responsive to fluid pressure downstream from said first shutoff valve means, whereby a reduction in pressure of said fluid downstream from said first valve means causes said fluid downstream from said first valve means causes said second valve means to move toward closed position, and to shutoff fluid flow from said first orifice to said second orifice means and said dispensing valve means; and third orifice means disposed between said first shutoff valve means and said dispensing valve means for maintaining a desired fluid pressure in communication with said other of said surfaces of said movable wall of said second shutoff valve means.

Claim 9

In a dual-dispensing automatic shutoff valve, the combination of: a first and second manually operable fluid-dispensing valve means; first and second pressurized fluid sources communicating respectively with said first and second dispensing valve means; first and second fluid-pressure-responsive automatic shutoff valve means communicating with said first and second dispensing valve means and with said first and second fluid sources, said first and second shutoff valve means being disposed to control the flow of fluids from said first and second sources to said first and second fluid-dispensing valve means, said first and second shutoff valve means being responsive to fluid of said sources, whereby a substantial depletion of either of said sources shuts off flow therefrom to said dispensing valve means; said first source having a liquid material and a gasifying aerosol-propellent; said first shutoff valve means having a pressure-responsive movable wall provided with opposed surfaces, one of said surfaces communicating with said first source; first orifice means intercommunicating with opposed surfaces of said movable wall means and with said dispensing valve means; second orifice means communicating with said second dispensing valve means downstream from said first orifice means and disposed to be shutoff from communication with said second dispensing valve means by operation of said second shutoff valve means; whereby a pressure differential is created with respect to said opposed surfaces when said dispensing valve means is open, and when said liquid is flowing through said first and second orifice means, and whereby the magnitude of said pressure differential changes when said liquid is exhausted, and when only said gasifying aerosol propellent flows through said first and second orifice means; said movable wall being responsive to said pressure differential change and thereby operable to move said first shutoff valve means toward closed position to shutoff communication of said second source with said second dispensing valve means; said second shutoff valve means disposed and responsive to a change in fluid pressure of said last-mentioned source downstream from said first shutoff valve means, said second shutoff valve means communicating with fluid from said first source and said first source and said second shutoff valve means being disposed to shutoff flow of fluid from said first source to said first dispensing valve means; said second shutoff valve means having a movable pressure-responsive wall means provided with opposed surfaces; one of said last-mentioned opposed surfaces responsive to pressure of fluid downstream from said first orifice means and the other of said last-mentioned opposed surfaces responsive to pressure of fluid downstream from said first orifice means and the other of said last-mentioned surfaces being responsive to fluid pressure downstream from said first shutoff valve means, whereby a reduction in pressure of said fluid downstream from said first valve means causes said second valve means to move Toward closed position and to shutoff fluid flow from said first orifice to said first dispensing valve means; and third orifice means disposed between said first shutoff valve mean and said second dispensing valve means for maintaining a desired fluid pressure in communication with said other of said surfaces of said movable wall of said second shutoff valve means.

Claim 10

In a dual-dispensing automatic shutoff valve, the combination of: a first and second manually operable fluid-dispensing valve means; first and second pressurized fluid sources communicating respectively with said first and second dispensing valve means; first and second fluid-pressure-responsive automatic shutoff valve means communicating with said first and second dispensing valve means and with said first and second fluid sources, said first and second shutoff valve means being disposed to control the flow of fluids from said first and second sources to said first and second fluid-dispensing valve means, said first and second shutoff valve means being responsive to fluid of said sources, whereby a substantial depletion of either of said sources shuts off flow therefrom to said dispensing valve means; said first source having a liquid material and a gasifying aerosol-propellent; said first shutoff valve means having a pressure-responsive movable wall provided with opposed surfaces, one of said surfaces communicating with said first source; first orifice means intercommunicating with opposed surfaces of said movable wall means and with said dispensing valve means; second orifice means communicating with said second dispensing valve means downstream from said first orifice means and disposed to be shutoff from communication with said second dispensing valve means by operation of said second shutoff valve means; whereby a pressure differential is created with respect to said opposed surfaces when said dispensing valve means is open, and when said liquid is flowing through said first and second orifice means, and whereby the magnitude of said pressure differential changes when said liquid is exhausted, and when only said gasifying aerosol propellent flows through said first and second orifice means; said movable wall being responsive to said pressure differential change and thereby operable to move said first shutoff valve means toward closed position to shutoff communication of said second source with said second dispensing valve means; said second shutoff valve means disposed and responsive to a change in fluid pressure of said last-mentioned source downstream from said first shutoff valve means, said second shutoff valve means communicating with fluid from said first source and said first source and said second shutoff valve means being disposed to shutoff flow of fluid from said first source to said first dispensing valve means; said second shutoff valve means having a movable pressure-responsive wall means provided with opposed surfaces; one of said last-mentioned opposed surfaces responsive to pressure of fluid downstream from said first orifice means and the other of said last-mentioned opposed surfaces responsive to pressure of fluid downstream from said first orifice means and the other of said last-mentioned surfaces being responsive to fluid pressure downstream from said first shutoff valve means, whereby a reduction in pressure of said fluid downstream from said first valve means causes said second valve means to move Toward closed position and to shutoff fluid flow from said first orifice to said first dispensing valve means; and third orifice means disposed between said first shutoff valve mean and said second dispensing valve means for maintaining a desired fluid pressure in communication with said other of said surfaces of said movable wall of said second shutoff valve means.

Claim 11

The invention, as defined in claim 1, wherein: said first and second sources comprise an external container for said first source; and a collapsible container disposed in said external container for containing said second source; said first and second sources including liquid material; said first source containing a gasifying fluid-propellent element adapted to pressurize both liquids in said external container and in said collapsible container.

Claim 12

The invention, as defined in claim 4, wherein: said first and second sources comprise an external container for said first source; and a collapsible container disposed in said external container for containing said second source; said first and second sources including liquid material; said first source containing a gasifying fluid-propellent element adapted to pressurize both liquids in said external container and in said collapsible container.

Claim 13

The invention, as defined in claim 5, wherein: said first and second sources comprise an external container for said first source; and a collapsible container disposed in said external container for containing said second source; said first and second sources including liquid material; said first source containing a gasifying fluid-propellent element adapted to pressurize both liquids in said external container and in said collapsible container.