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 first body portion having a first substantially flat surface, a second body portion having a second substantially flat surface facing the first surface, a flexible sheet positioned between the first and second surfaces, a fluid receiving chamber comprising a void in the first b

A valve comprising: a first body portion having a first substantially flat surface, a second body portion having a second substantially flat surface facing the first surface, a flexible sheet positioned between the first and second surfaces, a fluid receiving chamber comprising a void in the first body portion created and defined by a concave surface formed in the first substantially flat surface and a first side of the flexible sheet, at least two fluid passageways formed in the first body portion communicating at spaced locations with the void which forms the fluid receiving chamber, at least one of the fluid passageways being a flow through channel formed in the first substantially flat surface outside the void, then passing through the void and extending again outside the void in the substantially flat surface, the flow channel extending deeper into the first body portion than the concave surface, means for flexing the sheet against and away from the concave surface formed in the first body portion, in order that when the flexible sheet is flexed against the concave surface formed in the first body portion, the passageways are sealed from each other with the deeper-extending flow through channel remaining open to flow, and when the flexible sheet is flexed away from the concave surface in the first body portion the fluid passageways are placed in communication with each other by way of the void.