Dispensing – With cleaning means
Patent
1974-09-17
1977-05-17
Reeves, Robert B.
Dispensing
With cleaning means
22240224, 251353, 251355, B65D 8314, F16K 3158
Patent
active
040237109
ABSTRACT:
A valve for a pressure pack primarily designed for dispensing powders in the absence of liquid. The valve has the usual housing, gasket, stem, spring and mounting flange components but the special problems of dispensing powders are overcome (a) by introducing a liquid film between the sealing surfaces; (b) by physically removing particulate material from the valve stem by wiping and (c) by providing a double seal between the pressurized contents of the can and the atmosphere. In a further modification, the valve stem is connected to or continuous with the dip tube.
REFERENCES:
patent: 3406846 (1968-10-01), Klun
patent: 3586216 (1971-06-01), Jordan
patent: 3722759 (1973-03-01), Rodden
patent: 3733009 (1973-05-01), Rouzier et al.
Alexander David John
Gamadia Rustom Kooverji
Grant Arnold
Handren Frederick R.
Lever Brothers Company
Reeves Robert B.
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