Flexible tube flow control device and fluid feeder
OwnerKazumasa Ohnishiinventor
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Abstract
A flexible tube wherein a plurality of projections formed on an inner wall of the tube to extend axially in the tube are brought into engagement with recesses defined between these projections by a pressure applied from outside to the tube, so that finally the tube interior it closed. Since the flexible tube is not required to be widthwise stretched in order to close the interior of the tube, it is superior in micro-flow controllability and durability can be used for a flow control device or fluid feeder in a desirable manner.
Claims21
A flexible tube having a plurality of projections on an inner wall thereof which are extended axially in the tube under the condition that the projections are brought into engagement with recesses formed between the projections under pressure applied from outside to the tube, whereby finally closing the interior of the tube.
A flow control device comprising a flexible tube having a plurality of projections on an inner wall thereof which are extended axially in the tube under the condition that the projections are brought into engagement with recesses formed between the projections under pressure applied from outside to the tube, whereby finally closing the interior of the tube, a restriction member restricting widthwise expansion of the tube, and a tube pressing member.
A fluid feeder comprising a flexible tube having a plurality of projections on an inner wall thereof which are extended axially in the tube under the condition that the projections are brought into engagement with recesses formed between the projections under pressure applied from outside to the tube, whereby finally closing the interior of the tube, a restriction member restricting widthwise expansion of the tube, and two or more tube pressing members arranged along the axis of the tube.
Dependencies are inferred from the claim text.