Patent ID: 7849874

Claim:
A slide valve apparatus, comprising: a first plate member having a first fluid channel configured to flow a fluid, and having a first cutout surface on which a first opening of the first fluid channel is formed; a second plate member having a second fluid channel configured to flow the fluid, and having a second cutout surface on which a second opening of the second fluid channel is formed, wherein the first and second plate members are formed from a single substrate unit having an elongated channel formed in the single substrate unit, the single substrate unit being cut and separated into the first and second plate members having the first and second cutout surfaces, respectively, and the elongated channel being separated into the first and second fluid channels; and a first elastic membrane formed on the first cutout surface and having a first communicating hole which aligns with the first opening and communicates with the first fluid channel, wherein the second cutout surface is slidable on the first elastic membrane and is positioned in a communicating state wherein the first fluid channel is communicated to the second fluid channel through the first opening, the first communicating hole, and the second opening or is positioned in a shutting state wherein the second opening of the second fluid channel is shut by the first elastic membrane and the first communicating hole is shut by the second cutout surface.