Dispensing – With cutter and/or punch – To form dispensing opening in container
Patent
1997-06-13
1999-11-02
Kaufman, Joseph A.
Dispensing
With cutter and/or punch
To form dispensing opening in container
2221811, 2223219, 222325, 2225416, 222563, 417545, 417547, 417550, B67D 500
Patent
active
059753609
ABSTRACT:
A disposable plastic pump for dispensing liquids is disclosed which comprises two basic unitary, preferably all plastic, elements: a chamber forming body having an open outer end and an inner end in fluid communication with a liquid reservoir, and a piston formed to slidably fit into the chamber. The chamber forms two axially adjacent coaxial chambers, an inner chamber of one diameter and an outer chamber of a different diameter. The piston comprises a stem on which is located two spaced flexing disc each sized to fit in and serving as a one-way valve in the inner chamber and outer chamber, respectively, permitting fluids to flow outwardly past each flexing disc. A sealing disc is located on the stem outwardly of the outermost flexing disc. A passageway is provided from an inlet on the piston between the outermost flexing disc and the sealing disc through which the dispensed liquid flow.
REFERENCES:
patent: 3124080 (1964-03-01), Sisson
patent: 3132776 (1964-05-01), Wasseberg
patent: 3193159 (1965-07-01), Swindler
patent: 3926348 (1975-12-01), Lutzker
patent: 4046495 (1977-09-01), Grimm, Jr.
patent: 4106656 (1978-08-01), Babiol
patent: 4118152 (1978-10-01), Bron
patent: 4207990 (1980-06-01), Weiler et al.
patent: 4360130 (1982-11-01), Nishimura et al.
patent: 4364718 (1982-12-01), Beun et al.
patent: 4493440 (1985-01-01), Von Buelow
patent: 4548340 (1985-10-01), Messer
patent: 4589573 (1986-05-01), Tada
patent: 4615361 (1986-10-01), Bartle, Sr.
patent: 4615476 (1986-10-01), Hobbs et al.
patent: 4621749 (1986-11-01), Kanfer
patent: 4646945 (1987-03-01), Steiner et al.
patent: 4651902 (1987-03-01), Hobbs et al.
patent: 4673109 (1987-06-01), Cassia
patent: 4706827 (1987-11-01), Cabernoch et al.
patent: 4762475 (1988-08-01), Fuchs
patent: 4993600 (1991-02-01), Tucker et al.
patent: 5051073 (1991-09-01), Newbold
patent: 5110041 (1992-05-01), Keeler
patent: 5111970 (1992-05-01), Rutter et al.
patent: 5127550 (1992-07-01), Knorr
patent: 5165577 (1992-11-01), Ophardt
patent: 5165578 (1992-11-01), Laible
patent: 5213860 (1993-05-01), Laing
patent: 5261565 (1993-11-01), Drobish et al.
patent: 5261571 (1993-11-01), Goncalves
patent: 5282552 (1994-02-01), Ophardt
patent: 5320253 (1994-06-01), Robinson
patent: 5373970 (1994-12-01), Ophardt
patent: 5435462 (1995-07-01), Fujii
patent: 5489044 (1996-02-01), Ophardt
patent: 5676277 (1997-10-01), Ophart
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