초록 ▼

A fluid flow indicator for observation of low flow rates in liquids includes a capillary tube (12) slidably mounted at each end in passageways (4) and (5) and biased into a no-flow indicating position by a castellated elastomeric membrane (14) providing a sealed barrier within a chamber (1) between

A fluid flow indicator for observation of low flow rates in liquids includes a capillary tube (12) slidably mounted at each end in passageways (4) and (5) and biased into a no-flow indicating position by a castellated elastomeric membrane (14) providing a sealed barrier within a chamber (1) between a first zone (17) and a second zone (18). Fluid flow introduced through spigot (9) causes the capillary tube (12) to slide to the opposite end of the passageways (4) and (5) whereupon the deformed position of the elastomeric membrane (14) can readily be observed through transparent walls (3) in the chamber (1). Upon cessation of flow, the elastomeric membrane (14) causes the capillary tube (12) to revert to its original position.

대표청구항 ▼

The invention claimed is: 1. A fluid flow indicator including a chamber through which flow is directed, a fluid flow restricting element arranged to be mobile within the chamber in the direction of flow, means to direct fluid flow through the fluid flow restricting element, an elastic medium biasing

The invention claimed is: 1. A fluid flow indicator including a chamber through which flow is directed, a fluid flow restricting element arranged to be mobile within the chamber in the direction of flow, means to direct fluid flow through the fluid flow restricting element, an elastic medium biasing the fluid flow restricting element to a neutral position when there is no flow therethrough, and an observation means arranged to allow a user to directly observe movement of the flow restricting element from the neutral position to a displaced position when fluid flow is occurring within the chamber.