| 摘要 |
PURPOSE:To aim at making a flow of fluid controllable, usable for rotation and signals transmittable, by employing a spiral elastic body carrying holes and clearances. CONSTITUTION:A spiral elastic body 1 made of spring steel, etc., turns to a cone when fluidic pressure is added in the direction of 2 or 3 but when this pressure is released, it is restored to its original form by dint of resilient force of its own. When a curved hole pointing to one side from the inside is bored in the spiral elastic body 1, is fluid is flowed in the direction of 2 from 3, the spiral elastic body becomes in form of a cone in the direction of 2 whereby the fluid of 14 moves to 16 passing through a hole 15 but if the fluid is flowed in the direction of 3 from 2 the other way, for all that the spiral elastic body turns to a cone in form, the passage of the hole 15 does not open to 14 so that the fluid fails to flow. In case the hole is one that curves on the way rectilinearly toward the outside from the inside, fluid is spouted toward an outside 31 from an inside 30 of the cone and thus imparts turning force to the spiral elastic body. |
