Dispensing systems for dispensing one or more materials into a fluid flow conduit, during the conveyance of fluid through the conduit are configured to connect to a fluid conduit, such as a standard pipe of a shower arm and dispense a material into the water flow in the shower arm. The system includ
Dispensing systems for dispensing one or more materials into a fluid flow conduit, during the conveyance of fluid through the conduit are configured to connect to a fluid conduit, such as a standard pipe of a shower arm and dispense a material into the water flow in the shower arm. The system includes a first tube member having a restrictor flow passage to provide a pressure differential, as fluid flows through the tube member. The pressure differential created within the restrictor passage by the fluid flow is communicated to a flask, to provide a pressure differential between the interior and the exterior of a flexible container within the flask. The pressure differential causes material within the flexible container to be drawn out and conveyed to the fluid flowing through the tube member. The flask may be connected to the first tube member, through an extension portion that is rotatable around the first tube member for convenient positioning. A quick-release connection structure may allow the flask to be connected and selectively releasable from the system.
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1. A dispenser system for connection to a fluid flow pipe, the dispenser system comprising a first tube member including at least one fluid flow passage therethrough, wherein the first tube member includes an inlet configured for connecting to and receiving a fluid flow from the fluid flow pipe and
1. A dispenser system for connection to a fluid flow pipe, the dispenser system comprising a first tube member including at least one fluid flow passage therethrough, wherein the first tube member includes an inlet configured for connecting to and receiving a fluid flow from the fluid flow pipe and conveying fluid through the at least one fluid flow passage, andthe at least one fluid flow passage includes a restrictor passage further defining a first portion,a second portion downstream of the first portion, anda tapered portion intermediate the first portion and the second portion, tapering from a larger diameter adjacent the first portion to a smaller diameter adjacent the second portion, whereinthe first portion has a first fluid pressure and the second portion has a second fluid pressure that is less than the first fluid pressure, andthe second portion further has a diameter that is less than or equal to a diameter of an outlet of the tapered portion;a flask including an enclosed interior volume and having a flask fluid pressure that is substantially equal to the first fluid pressure;a pressure-deformable container held within the interior volume of the flask, wherein the pressure-deformable container defines a first volume for holding a flowable material;the flask and the deformable container define a second volume within the flask but external to the deformable container; andthe pressure-deformable container has a container pressure; anda connection structure connecting the first volume in fluid communication with the second portion of the restrictor passage and connecting the second volume in fluid communication with the first portion of the restrictor passage, wherein the connection structure is rotatably coupled to the first tube member for rotation about at least a portion of the restrictor flow passage after the first tube member is connected to the fluid flow pipe. 2. The dispenser system of claim 1, wherein the connection structure comprises a second tube member disposed around the first tube member and rotatable relative to the first tube member. 3. The dispenser system of claim 1, wherein the first tube member includes first and second annular grooves arranged in fluid-pressure communication with the first and second portions, respectively, of the restrictor passage, andwherein the connection structure comprises a second member disposed for rotation in a circumferential path of motion around the first tube member, wherein the second member includes first and second fluid communication passages arranged in fluid-communication with the first and second annular grooves of the first tube member throughout the circumferential path of motion of the second member relative to the first tube member. 4. The dispenser system of claim 3, wherein the second member comprises a second tube member disposed around the first tube member; andan extension member extending from the second tube member, the extension member including a flask connection end for connecting to the flask. 5. The dispenser system of in claim 1, wherein the connection structure and the flask include a releasable connector for selectively coupling and de-coupling the flask to the connector structure. 6. The dispenser system of claim 5, wherein the releasable connector comprises at least one clamp. 7. The dispenser system of claim 5, wherein the releasable connector comprises a threaded connector. 8. The dispenser system of claim 5 further comprising at least one additional flask for allowing a user to interchange one flask for another in the system. 9. The dispenser system of claim 1, wherein the flask comprises a flask body and a flask cover removably connectable to the flask body, the flask cover including a shaped connection portion;the pressure-deformable container includes a shaped connection portion for mating with the shaped connection portion of the flask cover; andthe shaped connection portion of the flask cover and the shaped connection portion of the pressure-deformable container include at least one of a mating groove and protrusion, mating non-circular cross-sectional shapes, or a combination of a mating groove and protrusion and mating non-circular cross-sectional shapes. 10. The dispenser system of claim 1, wherein the connection structure comprises an extension member including a flask connection end for selectively coupling and de-coupling the flask thereto;a first fluid passage in the extension member connected in fluid-communication with the first portion of the restrictor passage of the first tube member; anda valve disposed within the first fluid passage for blocking fluid-flow from the first fluid passage in the event that the flask decouples from the extension member. 11. The dispenser system of claim 10, wherein the connection structure further comprises a second fluid passage in the extension member connected in fluid-communication with the second portion of the restrictor passage of the first tube member; anda volume control valve with a manual actuator for manually adjusting flow volume disposed within the second fluid passage, wherein the volume control valve includes off position in which fluid through the second fluid passage is blocked. 12. The dispenser system of claim 10, wherein the connection structure further comprises a second fluid passage in the extension member connected in fluid-communication with the second portion of the restrictor passage of the first tube member; anda control valve operable to provide a first state to open fluid communication through the second fluid-passage to the interior of the deformable container, anda second state to open a bypass communication passage in fluid-pressure communication from the first fluid passage to the second fluid passage and block fluid communication through the second fluid passage to the interior of the deformable container. 13. The dispenser system of claim 1, wherein the connection structure defines a single interface for connecting to the first tube member. 14. The dispenser system of claim 1, wherein the connection structure connects directly to the first tube member. 15. A dispenser system for connection to a fluid flow pipe, the dispenser system comprising a first tube member including at least one fluid flow passage therethrough, wherein the first tube member includes an inlet configured for connecting to and receiving a fluid flow from the fluid flow pipe and conveying fluid through the at least one fluid flow passage in a fluid-flow direction;the at least one fluid flow passage includes a restrictor passage further defining a first portion,a second portion downstream of the first portion, anda tapered portion intermediate the first portion and the second portion, tapering from a lamer diameter adjacent the first portion to a smaller diameter adjacent the second portion, whereinthe first portion has a first fluid pressure, andthe second portion has a second fluid pressure that is less than the first fluid pressure, andthe second portion further has a diameter that is less than or equal to a diameter of an outlet of the tapered portion;a flask including a flask body with an interior volume at the first fluid pressure, anda flask cover removably connectable to the flask body and including a shaped connection portion;a pressure-deformable container held within the interior volume of the flask body, wherein the pressure-deformable container further defines a first volume for holding a flowable material, anda shaped connection portion for mating with the shaped connection portion of the flask cover; and whereinthe flask and the deformable container together define a second volume within the flask but external to the deformable container; andthe shaped connection portion of the flask cover and the shaped connection portion of the pressure-deformable container include at least one of a mating groove and protrusion, mating non-circular cross-sectional shapes, or a combination of a mating groove and protrusion and mating non-circular cross-sectional shapes; anda connection structure connecting the first volume in fluid-pressure communication with the second portion of the restrictor passage and connecting the second volume in fluid communication with the first portion of the restrictor passage, wherein the connection structure rotatably connects with the first tube member for rotation about at least a portion of the restrictor flow passage after the first tube member is connected to the fluid flow pipe. 16. The dispenser system of claim 15, wherein the connection structure comprises a second tube member disposed around the first tube member and rotatable relative to the first tube member and configured to rotate in a circumferential path of motion around the first tube member. 17. The dispenser system of claim 16, wherein the first tube member comprises a first annual groove arranged in fluid communication with the first portion;a second annual groove arranged in fluid communication with the second portion; andthe second tube member comprises a first fluid communication passage in fluid communication with the first annual groove; anda second fluid pressure communication passage in communication with the second annual groove throughout the circumferential path of motion of the second tube member relative to the first tube member. 18. The dispenser system of claim 15, wherein the connection structure comprises a releasable connector for selectively coupling and decoupling the flask to the connection structure. 19. The dispenser system of claim 18, wherein the releasable connector comprises a clamp. 20. A dispenser system for connection to a fluid flow pipe, the dispenser system comprising a first tube member including at least one fluid flow passage therethrough, wherein the first tube member includes an inlet configured for connecting to and receiving a fluid flow from the fluid flow pipe and conveying fluid through the at least one fluid flow passage in a fluid-flow direction,the at least one fluid flow passage includes a restrictor passage further defining a first portion,a second portion downstream of the first portion, anda tapered portion intermediate the first portion and the second portion, tapering from a larger diameter adjacent the first portion to a smaller diameter adjacent the second portion, whereinthe first portion has a first fluid pressure and the second portion has a second fluid pressure that is less than the first fluid pressure, andthe second portion further has a diameter that is less than or equal to a diameter of an outlet of the tapered portion;a flask including an enclosed interior volume, wherein when fluid flows through the fluid flow pipe, the flask has a flask pressure that is substantially equal to the first fluid pressure;a pressure-deformable container held within the interior volume of the flask, wherein the pressure-deformable container defines a first volume for holding a flowable material,the flask and the deformable container together define a second volume within the flask but external to the deformable container;a connection structure connecting the first volume in fluid communication with the second portion of the restrictor passage and connecting the second volume in fluid-communication with the first portion of the restrictor passage, wherein the connection structure is rotatably coupled to the first tube member for rotation in a circumferential motion relative to the restrictor passage; andthe connection structure further comprises an extension member including a flask connection end for selectively coupling and de-coupling the flask thereto;a first fluid passage in the extension member connected in fluid communication with the first portion of the restrictor passage of the first tube member; anda valve disposed within the first fluid passage for blocking fluid-flow from the first fluid passage in the event that the flask decouples from the extension member. 21. The dispenser system of claim 20, wherein the connection structure further comprises a second fluid passage in the extension member connected in fluid-communication with the second portion of the restrictor passage of the first tube member; anda volume control valve for manually adjusting flow volume disposed within the second fluid passage. 22. The dispenser system of claim 21, wherein the volume control valve includes an off position in which fluid-flow through the second fluid passage is blocked.
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