Dispensing – Automatic control
Patent
1988-05-04
1990-04-17
Huppert, Michael S.
Dispensing
Automatic control
222207, 141361, B67D 508
Patent
active
049172654
ABSTRACT:
A liquid dispenser is provided which includes a housing for retaining a quantity of a dispensing liquid. A base tray in association with a lower face of the housing defines a chamber for installation of a sensor and a valve controller. The valve controller which is responsive to the sensor includes a cylinder for transferring liquid from the housing to an external part of the housing. The cylinder is formed with a plurality of horizontal panels as well as a branch sleeve functionally connected to the sensor and a vertically located hollow sleeve-like movable plug having a circumferential flange on a central face with a downwardly extending protrusion formed on a lower portion within the cylinder. The movable plug is connectable to a rubber plug having a vent. The rubber plug is engageable with a bushing when the movable plug is moving downward and disengageable with the bushing when the movable plug is moving upward, so as to open and close the dispenser automatically and dispense only a predetermined amount of liquid.
REFERENCES:
patent: 3273752 (1966-09-01), Horeczky
patent: 3327901 (1967-06-01), Yerkovich
patent: 3434628 (1969-03-01), Ceraldi
patent: 3576277 (1971-04-01), Blackmon
patent: 4561571 (1985-12-01), Chen
patent: 4645094 (1987-02-01), Acklin et al.
patent: 4722372 (1988-02-01), Hoffman et al.
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