Liquid purification or separation – Flow – fluid pressure or material level – responsive – Check valve
Patent
1993-05-26
1994-11-08
Dawson, Robert A.
Liquid purification or separation
Flow, fluid pressure or material level, responsive
Check valve
210266, 210282, 2104163, B01D 2702, B01D 2708
Patent
active
053623851
ABSTRACT:
A personal, portable water filtering device is provided for use in filtering water taken from public drinking fountains, public wash basins or other public water sources. The preferred device includes a flexible attachment means for engaging the outlet of a water fountain, a tube connecting the attachment piece to a pump disposed between two check valves, a filter disposed between or within the pump and a tube connecting the filter to a mouthpiece. The user inserts the attachment means into the outlet of a water fountain or standing water supply which allows water to proceed up the first tube and into the hand-pump. The user then squeezes the hand-pump which forces water through the filter and the filtered water exits through the mouthpiece into the user's mouth. The device is lightweight and collapsible and will fit into the back pocket of athletic wear worn by joggers or other athletes.
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Fuksa Richard
Klegerman Neal A.
Dawson Robert A.
Klegerman Neal A.
Walker W. L.
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