초록 ▼

A portable, manually-operated water filtration pump for purifying water. The pump includes an inexpensive, disposable filter cartridge which can be easily changed when the filter elements are no longer effective. The pump uses a lever to actuate a double-acting piston. The lever is collapsible to on

A portable, manually-operated water filtration pump for purifying water. The pump includes an inexpensive, disposable filter cartridge which can be easily changed when the filter elements are no longer effective. The pump uses a lever to actuate a double-acting piston. The lever is collapsible to one side of the pump for compact storage. The filter cartridge is a tubular cylinder having an inner bore forming the pump cylinder. A cylindrical mechanical filter is concentric with and adjacent to the inner bore to filter out particulates larger than 0.3 microns. A fluidized granular activated charcoal filter surrounds the mechanical filter to absorb chlorine and chlorine-related compounds such as herbicides and pesticides. The pump pumps into a bottle adaptor which will fit most standard water containers. A prefilter is provided to screen out large particulates from the pump to enhance the life of the filter elements. The prefilter is weighted such that it will sink in water sources and to keep the prefilter inlet upright in still water or downstream in moving water.

대표청구항 ▼

A pump for fluid filtration and purification, said pump comprising: a housing; a piston rod slidably mounted on said housing along a first axis of said housing; a piston affixed to an end of said piston rod; means for slidably moving said piston rod and said piston relative to said housing; a cartri

A pump for fluid filtration and purification, said pump comprising: a housing; a piston rod slidably mounted on said housing along a first axis of said housing; a piston affixed to an end of said piston rod; means for slidably moving said piston rod and said piston relative to said housing; a cartridge filter; connector means for removably engaging said cartridge filter with said housing, said cartridge filter including: an inner bore of said cartridge filter forming a pump cylinder defining means for movably receiving said piston when said cartridge filter is engaged with said housing; inlet means formed on a first end of said inner bore of said cartridge filter for enabling fluid to enter into said inner bore when said piston moves away from said inlet means; filtering means concentric with and surrounding said inner bore for filtering fluid; an inner plenum formed between said inner bore and said filtering means for enabling unfiltered fluid to be pumped from said inner bore and through said inner plenum and said filtering means in response to movement of said piston within said inner bore; baffle means abutting said filtering means and adjacent said inner plenum and a second end of said inner bore for providing uniform laminar flow of fluid pumped from said bore into said inner plenum; and outlet means on an upper end of said cartridge filter adjacent said filtering means for enabling filtered fluid to exit said cartridge filter.