Patent ID: 7905429
Filing Date: 2011-03-15
Classification: A62C,E03C,Y10T

Abstract:
1. A dispenser system for connection to a fluid flow pipe through which a fluid may flow, the dispenser comprising: a first tube member having at least one fluid flow passage therethrough, the first tube member having an inlet configured for connecting to and receiving a fluid flow from a 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 including a restrictor passage having a first portion and a second portion downstream of the first portion in the fluid-flow direction, the first portion having a first fluid pressure and the second portion having a second fluid pressure that is less than the first fluid pressure, upon fluid being conveyed through the restrictor passage; a flask having an enclosed interior volume; a pressure-deformable container held within the interior volume of the flask, the pressure-deformable container having an interior first volume for holding a flowable material, the flask and the deformable container defining a second volume within the flask but external to the deformable container; and a connection structure for connecting the first volume in fluid-pressure communication with the second portion of the restrictor passage and for connecting the second volume in fluid-pressure communication with the first portion of the restrictor passage, the connection structure being 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; wherein the at least one fluid flow passage through the first tube member comprises at least one bypass passage, for allowing fluid to flow through the first tube member and bypass the restrictor passage in the first tube member.