Cleaning and liquid contact with solids – Apparatus – With plural means for supplying or applying different fluids...
Patent
1984-12-07
1987-09-08
Hornsby, Harvey C.
Cleaning and liquid contact with solids
Apparatus
With plural means for supplying or applying different fluids...
222453, 134100, B08B 1300
Patent
active
046917217
ABSTRACT:
A liquid dispenser (10) for dispensing a volumetric quantity of liquid (26) is disclosed. The dispenser (10) includes a plunger (11) having a longitudinal axis (30). First and second umbrella seals (14) and (15) are cooperatively connected to the plunger (11). The seals (14) and (15) are in spaced relationship. A plunger housing (16) encloses at least a portion of the plunger (11). The plunger housing (16) is adapted for relative movement with the plunger (11) along the longitudinal axis (30). The plunger housing (16) has an inner cavity (19a) having a first opening (19b) and a second opening (19c), wherein a measuring chamber is defined between the seals. Relative movement along the longitudinal axis (30) is effected between the plunger (11) and the plunger housing (16), wherein the plunger (11) moves from a filling to a dispensing position. When in the filling position, the second seal (15) seals the second opening 19(c) and the first seal (14) allows liquid (26) to enter the measuring chamber (19a) through the first opening (19b). When in the dispensing position, the first seal (14) seals the first opening (19b) and the second seal (15) allows liquid (26) to be dispensed by gravity from the second opening (19c). The first seal (14) always is in a sealing relationship to the first opening (19b) when the second seal (15) allows dispensing of the liquid (26), whereby a constant volume of liquid (26) is dispensed.
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Ecolab Inc.
Hornsby Harvey C.
Stinson Frankie L.
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