Automatic cycling discharging device

Claim 2

In an automatic fluid discharging device for use with a pressure pack containing pressurized fluid which includes mechanism actuated by said pressure fluid for intermittently discharging a spray of fluid from said pressure pack and including a discharge chamber one wall of which is flexible for varying the enclosed volume, the improvement which comprises, a cooperating fluid timing system including first and second chambers interconnected by a constricted passage and by a pressure equalizing valve, the second chamber being filled with timing fluid, one wall of such chamber being common with said flexible wall, and means providing snap action of said flexible wall between outwardly and inwardly flexed positions to actuate said pressure equalizing valve.

Claim 3

An automatic fluid discharging devicE according to claim 1 in which the second chamber of the timing system is filled with a liquid.

Claim 4

An automatic fluid discharging device for use with a pressure pack containing a pressurized fluid which comprises: a. a fluid timing system including first and second chambers interconnected by a constricted passage and by a pressure equalizing valve, the second chamber being filled with timing fluid, at least one wall of the second chamber being flexible for varying the enclosed volume, and means providing snap action of said flexible wall between outwardly and inwardly flexed positions thereof, and b. a pressurized fluid section including, a metering chamber having a valved inlet from the pressure pack, means for introducing fluid from the pressure pack by way of said metering chamber to the second surface of said flexible wall, a valve stem actuated by said flexible wall, a discharge outlet, and valve means associated with said stem including said valved inlet for controlling the flow of pressurized fluid so that when said flexible wall is flexed outwardly said valve means permits flow to the outer surface of the flexible wall, also when said flexible wall is in the snap action position said valve means prevents fluid flow between the pressure pack and metering chamber and, when said flexible wall reaches a position beyond the said snap action position said pressure equalizing valve is opened permitting rapid motion of said flexible wall to its inwardly flexed position and thereby permitting flow of the metered fluid through the discharge outlet thus reducing the pressure on the outer surface of said wall and allowing said wall to flex to its outward position.

Claim 5

An automatic fluid discharging device for use with a pressure pack containing a pressurized fluid which comprises: a. a fluid timing system including first and second chambers interconnected by a constricted passage and by a pressure equalizing valve, the second chamber being filled with timing fluid, at least one wall of the second chamber being flexible for varying the enclosed volume, and means providing snap action of said flexible wall between outwardly and inwardly flexed positions thereof, and b. a pressurized fluid section including, a metering chamber having a valved inlet from the pressure pack, means for introducing fluid from the pressure pack by way of said metering chamber to the second surface of said flexible wall, a valve stem actuated by said flexible wall, a discharge outlet, and valve means associated with said stem including said valved inlet for controlling the flow of pressurized fluid so that when said flexible wall is flexed outwardly said valve means permits flow to the outer surface of the flexible wall, also when said flexible wall is in the snap action position said valve means prevents fluid flow between the pressure pack and metering chamber and, when said flexible wall reaches a position beyond the said snap action position said pressure equalizing valve is opened permitting rapid motion of said flexible wall to its inwardly flexed position and thereby permitting flow of the metered fluid through the discharge outlet thus reducing the pressure on the outer surface of said wall and allowing said wall to flex to its outward position.

Claim 6

An automatic fluid discharging device according to claim 3 in which the second chamber of the timing system is filled with a liquid.

Claim 7

An automatic fluid discharging device for use with a pressure pack containing a pressurized fluid which comprises: a. a fluid timing system including first and second chambers interconnected by a constricted passage and by a pressure equalizing valve, the second chamber being filled with timing fluid, at least one wall of the second chamber being flexible for varying the enclosed volume, and means providing snap action of said flexible wall between outwardly and inwardly flexed positions thereof, and b. a pressurized fluid section including, a metering chamber having a valved inlet from the pressure pack, means for introducing fluid from the pressure pack through said metering chamber to a third (FIGS. 2, 3 and 4) chamber one wall of which is formed by the outer surface of said flexible wall, a valve stem actuated by said flexible wall, a discharge outlet, and valve means associated with said stem including said valved inlet for controlling the flow of pressurized fluid so that when said flexible wall is flexed outwardly said valve means permits flow to the outer surface of the flexible wall, also when said flexible wall is in the snap action position said valve means prevents fluid flow between the pressure pack and metering chamber and, when said flexible wall reaches a position beyond the said snap action position said pressure equalizing valve is opened permitting rapid motion of said flexible wall to its inwardly flexed position and thereby permitting flow of the metered fluid through the discharge outlet thus reducing the pressure on the outer surface of said wall and allowing said wall to flex to its outward position.

Claim 8

An automatic fluid discharging device for use with a pressure pack containing a pressurized fluid which comprises: a. a fluid timing system including first and second chambers interconnected by a constricted passage and by a pressure equalizing valve, the second chamber being filled with timing fluid, at least one wall of the second chamber being flexible for varying the enclosed volume, and means providing snap action of said flexible wall between outwardly and inwardly flexed positions thereof, and b. a pressurized fluid section including, a metering chamber having a valved inlet from the pressure pack, means for introducing fluid from the pressure pack through said metering chamber to a third (FIGS. 2, 3 and 4) chamber one wall of which is formed by the outer surface of said flexible wall, a valve stem actuated by said flexible wall, a discharge outlet, and valve means associated with said stem including said valved inlet for controlling the flow of pressurized fluid so that when said flexible wall is flexed outwardly said valve means permits flow to the outer surface of the flexible wall, also when said flexible wall is in the snap action position said valve means prevents fluid flow between the pressure pack and metering chamber and, when said flexible wall reaches a position beyond the said snap action position said pressure equalizing valve is opened permitting rapid motion of said flexible wall to its inwardly flexed position and thereby permitting flow of the metered fluid through the discharge outlet thus reducing the pressure on the outer surface of said wall and allowing said wall to flex to its outward position.

Claim 9

An automatic fluid discharging device according to claim 5 in which the second chamber of the timing system is filled with a liquid.

Claim 10

An automatic fluid discharging device for use with a pressure pack containing a pressurized fluid and having a siphon tube, which device has a body member including, outer and inner timing chambers separated by a crosswise partition, the inner chamber having a crosswise snap action diaphragm the inner surface of which forms one wall of a control chambEr, a constriction connection between said chambers, a member projecting from said body for connection with said siphon tube and having a receiving chamber for pressurized liquid, a passage in said body interconnecting said control and receiving chambers, a hollow valve stem fixed to the diaphragm and extending through said passage and through said receiving chamber, said interconnecting passage having an annular space surrounding the valve stem, an outlet channel in the body member extending from said annular space, seal ring members surrounding the hollow valve stem and positioned respectively adjacent the outer surface of the control chamber, at the inner end of the receiving chamber and at the outer end thereof, the hollow valve stem having lateral valve ports cooperating respectively with the control chamber seal ring and the seal ring at the inner end of the receiving chamber, and having a shoulder adjacent its inner end cooperating with the seal ring at the outer end of the receiving chamber, a valve opening in said partition between said outer and inner timing chambers, a spring closed valve cooperating with said opening, and the diaphragm actuating said valve member to open the same on the diaphragm outer stroke thus quickly equalizing the pressure in the two timing chambers and allowing the diaphragm to complete its outward stroke and then commence its return stroke.

Claim 11

An automatic fluid discharging device for use with a pressure pack containing a pressurized fluid and having a siphon tube, which device has a body member including, outer and inner timing chambers separated by a crosswise partition, the inner chamber having a crosswise snap action diaphragm the inner surface of which forms one wall of a control chambEr, a constriction connection between said chambers, a member projecting from said body for connection with said siphon tube and having a receiving chamber for pressurized liquid, a passage in said body interconnecting said control and receiving chambers, a hollow valve stem fixed to the diaphragm and extending through said passage and through said receiving chamber, said interconnecting passage having an annular space surrounding the valve stem, an outlet channel in the body member extending from said annular space, seal ring members surrounding the hollow valve stem and positioned respectively adjacent the outer surface of the control chamber, at the inner end of the receiving chamber and at the outer end thereof, the hollow valve stem having lateral valve ports cooperating respectively with the control chamber seal ring and the seal ring at the inner end of the receiving chamber, and having a shoulder adjacent its inner end cooperating with the seal ring at the outer end of the receiving chamber, a valve opening in said partition between said outer and inner timing chambers, a spring closed valve cooperating with said opening, and the diaphragm actuating said valve member to open the same on the diaphragm outer stroke thus quickly equalizing the pressure in the two timing chambers and allowing the diaphragm to complete its outward stroke and then commence its return stroke.

Claim 12

An automatic fluid discharging device for use with a pressure pack containing a pressurized fluid which comprises: a. a fluid timing system including first and second chambers interconnected by a constricted passage and by a pressure equalizing valve, the second chamber being filled with timing fluid, at least one wall of the second chamber being flexible for varying the enclosed volume, and means providing snap action of said flexible wall between outwardly and inwardly flexed positions thereof, means actuated by said flexible wall for operating said pressure equalizing valve, and b. A pressurized fluid section including, a metering and discharge chamber adjacent said flexible wall, a duct extending from the pressure pack to said metering and discharge chamber and to said flexible wall having an inlet valve therein, a valve stem actuated by said flexible wall, a discharge outlet and valve therefor, and means actuated by said stem for controlling said inlet and discharge valves.

Claim 13

An automatic fluid discharging device for use with a pressure pack containing a pressurized fluid which comprises: a. a fluid timing system including first and second chambers interconnected by a constricted passage and by a pressure equalizing valve, the second chamber being filled with timing fluid, at least one wall of the second chamber being flexible for varying the enclosed volume, and means providing snap action of said flexible wall between outwardly and inwardly flexed positions thereof, means actuated by said flexible wall for operating said pressure equalizing valve, and b. A pressurized fluid section including, a metering and discharge chamber adjacent said flexible wall, a duct extending from the pressure pack to said metering and discharge chamber and to said flexible wall having an inlet valve therein, a valve stem actuated by said flexible wall, a discharge outlet and valve therefor, and means actuated by said stem for controlling said inlet and discharge valves.