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 channel formed in the first substantially flat surface laterally of the void and progressing to and terminating in the void, the channel being defined jointly by a portion of the first body portion which is located laterally of the concave surface and by the first surface of the flexible sheet which is engagable with the first substantially flat surface and the concave surface in the first body portion, 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 concave surface in the first body portion, the passageways are sealed from each other, 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 fluid receiving chamber comprising the void.