Dispensing – With material treatment or conditioning means
Patent
1981-11-10
1983-12-13
Rolla, Joseph J.
Dispensing
With material treatment or conditioning means
222209, 222211, 222401, F04C 114, B65D 4302
Patent
active
044200986
ABSTRACT:
A vertical container has first and second spaced apart horizontal openings and is otherwise sealed. The container has a hollow chamber communicating with the first and second openings. The chamber is adapted to be partially filled with liquid. The maximum level of fill is disposed below both openings. The region between the liquid level and the openings is air filled. A first device is secured and sealed to the first opening and includes a manually operable bellows disposed above the first opening. The bellows has compressed and released positions. A second device is secured and sealed to the second opening and includes a discharge orifice. A vertical dip tube open at both ends is disposed in the container. The top end of the tube is disposed adjacent the second opening. The bottom end of the tube is adjacent but spaced above the botton of the container. An air-liquid mixer disposed in the second opening in the region is coupled between the second means the top end of the tube. The mixer, when the bellows is in compressed position, mixes air with liquid expelled from tube to produce foam which is discharged through the orifice. Ambient air is drawn through the orifice into the region to replace the liquid expelled when the bellows returns from compressed position to released position.
REFERENCES:
patent: 3255933 (1966-06-01), Martin
patent: 3985271 (1976-10-01), Gardner
patent: 4087024 (1978-05-01), Martin et al.
patent: 4274562 (1981-06-01), Medeiros et al.
Huppert Michael S.
Rolla Joseph J.
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