초록 ▼

A foam dispenser for use in association with foaming liquid is disclosed. The squeeze operated foam dispenser includes a resiliently deformable bottle and a cap. The resiliently deformable bottle has an at rest position and an under pressure position. The bottle has an interior and a throat. The cap

A foam dispenser for use in association with foaming liquid is disclosed. The squeeze operated foam dispenser includes a resiliently deformable bottle and a cap. The resiliently deformable bottle has an at rest position and an under pressure position. The bottle has an interior and a throat. The cap is attached to the throat and the cap has a nozzle extending inwardly into the interior of the bottle. The nozzle defines a nozzle fluid passageway. A nozzle cover is attached to the cap and spaced from the nozzle and a cap chamber is defined therebetween. An air tube defining an air passageway extends inwardly from the nozzle cover and the air passageway is in communication with the cap chamber and an interior portion of air formed between the liquid and the bottle in the interior thereof when the nozzle is positioned downwardly. A pressure actuated valve selectively opens and closes the air tube whereby the valve is closed when the bottle is in the at rest position and opens responsive to the bottle being moved from the at rest position to the pressure position. A cover port is formed in the nozzle cover to provide a fluid passageway between the interior and the cap chamber. The dispenser includes a method of sealing the nozzle when the bottle is in the at rest position. The sealing method may be a pressure retaining valve. Alternatively the cover port, the nozzle and the nozzle cover are arranged whereby, in the at rest position with the throat of the bottle positioned downwardly, there is an airlock between the nozzle and nozzle cover in the cap chamber and when the bottle is moved from the at rest position to the pressure position the air lock is broken.

대표청구항 ▼

1. A foam dispenser for use in association with foaming liquids comprising: a resiliently deformable bottle having an interior and a throat, the resiliently deformable bottle having an at rest position and an under pressure position; a cap attached to the throat, the cap having a nozzle extending i

1. A foam dispenser for use in association with foaming liquids comprising: a resiliently deformable bottle having an interior and a throat, the resiliently deformable bottle having an at rest position and an under pressure position; a cap attached to the throat, the cap having a nozzle extending inwardly into the interior and the nozzle defining a nozzle fluid passageway; a nozzle cover attached to the cap and spaced from the nozzle defining a cap chamber therebetween; an air tube defining an air passageway extending inwardly from the nozzle cover, the air passageway being in flow communication with the cap chamber and an interior portion of air formed between the liquid and the bottle in the interior thereof when the nozzle is positioned downwardly; a pressure actuated valve for selectively opening and closing the air tube whereby the valve is closed when the bottle is in the at rest position and opens responsive to the bottle being moved from the at rest position to the under pressure position such that air flows through the air passageway from the interior portion of the bottle into the cap chamber and responsive to the bottle being moved from the under pressure position to the at rest position a vacuum is formed in the interior of the bottle drawing up air from the cap chamber and closing the valve; a cover port formed in the nozzle cover providing a fluid passageway between the interior of the bottle and the cap chamber; and a means for sealing the nozzle when the bottle is in the at rest position.