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A dispenser for fluids includes an elastic bladder having an open end and a closed end and includes a bladder mounting structure for maintaining the bladder in tension. The bladder mounting structure includes a fixed structural element having a convex curved surface. The mounting structure also incl

A dispenser for fluids includes an elastic bladder having an open end and a closed end and includes a bladder mounting structure for maintaining the bladder in tension. The bladder mounting structure includes a fixed structural element having a convex curved surface. The mounting structure also includes mounting elements for fixing the two ends of the bladder relative the curved surface so that bladder is stretched over the curved surface. A flow controller communicates with the open end of the bladder to regulate the flow of fluid from the bladder. The flow controller includes a body having a fluid flow path through it. A shutoff element in the fluid flow path controls the cross-sectional flow area of the flow path. Movement of the shutoff element is controlled by a mechanism sealed from the fluid flow path.

대표청구항 ▼

A device for dispensing a fluid, comprising: a bladder assembly comprising: a substantial tubular length of elastomeric material having an open end and a closed end forming a bladder; a self-closing valve assembly, said valve assembly in fluid communication with said open end of said length of elast

A device for dispensing a fluid, comprising: a bladder assembly comprising: a substantial tubular length of elastomeric material having an open end and a closed end forming a bladder; a self-closing valve assembly, said valve assembly in fluid communication with said open end of said length of elastomeric material; a main housing to which said valve assembly is attached, having a fixed, curved surface, wherein said closed end of said length of elastomeric materials is fixedly attached adjacent one end of said curved surface, and wherein said valve assembly of said bladder assembly is fixedly attached to said main housing near the other end of said curved surface, so that said length of elastomeric material is stretched over said curved surface for pressurizing said fluid; a flow controller removably attached to said valve assembly to regulate the flow of fluid out of said bladder, said flow controller comprising a body having a fluid flow path through said body, including an inlet passage and an outlet passage, the flow controller further comprising a probe, said probe coupled to said inlet passage so that as said flow controller is attached to said main housing said probe enters through said valve assembly into the open end of said bladder, thereby opening said valve assembly so long as said flow controller is attached to said main housing, while permitting said valve assembly to close whenever said flow controller is removed from said main housing, said flow controller body further including a cavity, a portion which forms a segment of said fluid flow path, said flow controller further comprising: a shut-off element having substantially the same shape as said cavity, wherein said shut-off element is movable within said cavity to adjustably fill said cavity and provide selective amounts of obstruction to said fluid flow path, and wherein a portion of said shut-off element is sealed from said fluid flow path.