초록 ▼

A dispensing device is adapted to dispense metered amounts of a liquid substance from a pouch (10) made from a pair of superposed flexible sheets. The pouch defines a liquid containing chamber (15-17) and a narrow liquid discharge passage (18) communicating with the chamber at a junction position (3

A dispensing device is adapted to dispense metered amounts of a liquid substance from a pouch (10) made from a pair of superposed flexible sheets. The pouch defines a liquid containing chamber (15-17) and a narrow liquid discharge passage (18) communicating with the chamber at a junction position (34) and being self-sealing at that position. The device comprises liquid discharge mechanism (23, 27) for applying a pressure to the liquid substance present in the lower part of the chamber (16). The liquid discharge mechanism comprises a devices (31) for applying an inwardly directed pressure to a pouch wall closely adjacent to the junction position (34) so as to increase the angle (62) defined between the pouch wall and the plane at right angles to the longitudinal axis (13) of the discharge passage (18), whereby the discharge passage (18) may be opened. The dispensing device may also comprise a mechanism (35, 43) for bending the discharge passage (18) to an angular configuration so as to close the discharge passage when an amount of liquid has been discharged.

대표청구항 ▼

[ We claim:] [1.] A dispensing device for dispensing metered amounts of liquid substance from a pouch made from a pair of superposed flexible sheets sealed together along the contour thereof so as to define between the sheets a chamber for containing the liquid substance and a narrow liquid discharg

[ We claim:] [1.] A dispensing device for dispensing metered amounts of liquid substance from a pouch made from a pair of superposed flexible sheets sealed together along the contour thereof so as to define between the sheets a chamber for containing the liquid substance and a narrow liquid discharge passage communicating with said chamber at a junction position and being selfsealing at that position, said device comprising means for positioning the pouch containing the liquid substance so that the discharge passage is downwardly oriented, and liquid discharge means for applying a pressure to the liquid substance present in a part of the chamber adjoining the discharge passage so as to discharge an amount of liquid through said passage, the the liquid discharge means comprising passage opening means including means for applying an inwardly directed pressure to one of said flexible sheets forming a chamber wall, closely adjacent to said junction position so as to increase an angle defined between said one flexible sheet and a plane at right angles to the longitudinal axis of the discharge passage.