초록 ▼

A funnel (20) for use in dumping volatile solvents into an underlying carboy (16) is ecologically friendly in that it blocks solvent from evaporating from the carboy into the atmosphere. The funnel has (a) an extended stem (22), the bottom open end of which is below the surface of the solvent (18) i

A funnel (20) for use in dumping volatile solvents into an underlying carboy (16) is ecologically friendly in that it blocks solvent from evaporating from the carboy into the atmosphere. The funnel has (a) an extended stem (22), the bottom open end of which is below the surface of the solvent (18) in the carboy to reduce surface evaporation, (b) an occluder or obturating ball (24) in the throat of the funnel to block evaporation through the stem of the funnel, and (c) a lid (28) on the funnel to block evaporation. The ball may be float operated, with or without a captivating cage (26), or it may be operated by lifting the lid, which may be performed manually or via a foot pedal (38).

대표청구항 ▼

A self-sealing ecological funnel apparatus which prevents backflow of solvent vapors, comprising: a funnel having a conical, tapered body portion having a relatively wide open upper end and a relatively narrow bottom end, said funnel having a stem having an upper end attached to and extending downwa

A self-sealing ecological funnel apparatus which prevents backflow of solvent vapors, comprising: a funnel having a conical, tapered body portion having a relatively wide open upper end and a relatively narrow bottom end, said funnel having a stem having an upper end attached to and extending downwardly from said bottom end of said body portion, and an open bottom end, said stem having a lumen of a predetermined size at said upper end thereof, an obturating ball positioned in said body portion, said ball having a size larger than said predetermined size of said lumen so that said ball will obturate but will not enter said lumen, and a closure cap attached to said stem of said funnel, said closure cap being arranged to sealingly mate with the neck of a predetermined carboy so that said closure will seal the area between stem and said neck when said stem is inserted into said neck, said closure cap having internal threads thereon for mating with external threads on said neck of said carboy.