초록 ▼

A valve is disclosed comprising a first body portion (2) having a first surface (16), a second body portion (4) having a second surface (51) facing the first surface, a flexible sheet (8) positioned between the first and second surfaces, a void (4) in the first body portion created and defined by a

A valve is disclosed comprising a first body portion (2) having a first surface (16), a second body portion (4) having a second surface (51) facing the first surface, a flexible sheet (8) positioned between the first and second surfaces, a void (4) in the first body portion created and defined by a concave surface (46) formed in the first surface and one side (18) of the flexible sheet. There are at least two fluid passageways (20) (22) in the first body portion communicating with the void at spaced locations, at least one of the fluid passageways being a channel formed in the first surface and terminating at the void. A source of pressure and vacuum (50) (54) is provided for flexing the sheet against and away from the first body portion in order that when the flexible sheet is flexed against the first body portion, the passageways are sealed from each other, and when the flexible sheet is flexed away from the first body portion the fluid passageways are placed in communication with each other by way of the void.

대표청구항 ▼

A valve comprising: a valve body member having a firm and stable surface, a flexible valve sheet member having a surface for conforming and mating engagement with said valve body surface, first and second fluid passageways intersecting the surface of the valve body member at spaced locations with a

A valve comprising: a valve body member having a firm and stable surface, a flexible valve sheet member having a surface for conforming and mating engagement with said valve body surface, first and second fluid passageways intersecting the surface of the valve body member at spaced locations with a land portion located between the passageways, a groove formed in the surface of the land portion, which is depressed relative to the surface of the land portion and which extends between the spaced locations where the first and second fluid passageways intersect the surface of the valve body member, and means for flexing the said sheet member between a first position in which the valve sheet surface is in mating and sealing engagement with the valve body surface and the depressions to sealingly block flow between the first and second passageways, and a second position in which said sheet surface is spaced away from said first position to allow flow between said first and second passageways across the land portion by way of the depressed portion.