Capped piston pump

Dispensing – With cutter and/or punch – To form dispensing opening in container

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

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

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Capped piston pump does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Capped piston pump, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Capped piston pump will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2123902

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.