초록 ▼

Foam is produced when a reservoir is deformed by squeezing. When pressure is applied to the reservoir, a flexible washer seals a vent passage while liquid is forced up through a tube, a ball valve and outwardly through a radially slotted member, while air passes through orifices in the washer and al

Foam is produced when a reservoir is deformed by squeezing. When pressure is applied to the reservoir, a flexible washer seals a vent passage while liquid is forced up through a tube, a ball valve and outwardly through a radially slotted member, while air passes through orifices in the washer and along the outside of the slotted member to mix with the liquid. The mixture is then discharged when pressure is released, the valve is sealed and suction pulls the washer away from the vent to allow air back into the reservoir.

대표청구항 ▼

A device for producing foam from a foamable liquid and aiR, said device comprising: a deformable vertical reservoir having an open neck and adapted to contain a quantity of foamable liquid and air; a first vertically elongated member provided with an enlarged lower end engaging the neck and having a

A device for producing foam from a foamable liquid and aiR, said device comprising: a deformable vertical reservoir having an open neck and adapted to contain a quantity of foamable liquid and air; a first vertically elongated member provided with an enlarged lower end engaging the neck and having a flat horizontal bottom surface covering the neck, said lower end having a first vertical channel extending from the outside of the member therethrough to communicate with the bottom surface, said first member having a first chamber with a first upper section having a circular top opening flush with the top of the first member and a second lower section having a bottom circular opening flush with the bottom surface, said first and second sections being interconnected by a second vertical channel, both sections having vertical cylindrically shaped inner walls, the inner wall of the first section tapering inwardly in the vicinity of the second channel; a second vertically elongated member having upper and lower extensions disposed respectively within and spaced from the second section and the reservoir respectively, said second member having a flat circular flexible horizontal washer disposed between said extensions and extending radially outward along the bottom surface past the first channel, said second member having a second chamber with a third upper section disposed in the upper extension and communicating with a top opening in the upper extension, said second chamber having a fourth lower section disposed in the lower half and communicating with a bottom opening in the lower extension, the third and fourth sections being interconnected by a third vertical channel, said washer having spaced openings communicating with a region intermediate the inner wall of the second section and the upper extension of the second member, said upper extension having spaced vertical slots communicating between said region and said third section; and a ball vertically movable in the third section and having a diameter larger than that of the third channel.