Container for dispensing preservative-free preparations

Details Container for dispensing preservative-free preparations Container for dispensing preservative-free preparations

1990-07-16

1991-12-24

Huppert, Michael S.

Dispensing

With filter

Associated with vent passage

222213, 222496, 2392883, B67D 558

Patent

active

050744402

ABSTRACT:
A multiple use container for dispensing fluids, particularly preservative free preparations in variable doses, includes a squeezable container for holding the fluid. A dispenser assembly associated with an exit opening from the container includes a hollow dispensing tip which encloses a fluid valve. The fluid valve utilizes a piston head which sealingly seats in a valve seat. A resilient biasing means holds the piston head in a normally sealed or closed position. A second opening in communication with the interior of the bottle is covered by a hydrophobic filter having a pore size that prevents microbial contaminants from entering the container but prohibits fluid from leaving the container. The bottle is squeezed to force fluid to overcome the biasing pressure of the fluid valve to dispense fluid from the bottle. Upon release of that pressure, the fluid valve closes and air passes through the filter to replace the dispensed fluid. The air entering the container is sterilized by the filter.

REFERENCES:
patent: 1752085 (1928-06-01), Hinkle
patent: 2187564 (1938-04-01), Bagley
patent: 2752199 (1954-12-01), Newell
patent: 2812117 (1955-03-01), Butkus et al.
patent: 2830740 (1954-11-01), Landis
patent: 3105618 (1963-10-01), Whitley
patent: 3130877 (1964-04-01), Miller
patent: 3141579 (1964-07-01), Medlock
patent: 3149758 (1961-11-01), Bush et al.
patent: 3215350 (1965-11-01), Hetrick
patent: 3358883 (1966-03-01), Loe
patent: 3756478 (1973-09-01), Podell et al.
patent: 3952902 (1976-04-01), Prouty et al.
patent: 4093124 (1978-06-01), Morane et al.
patent: 4159790 (1979-07-01), Bailey
patent: 4239132 (1980-12-01), Mueller et al.
patent: 4259954 (1981-04-01), Scott
patent: 4340157 (1982-07-01), Darner
patent: 4533068 (1985-08-01), Meierhoefer
patent: 4694976 (1987-09-01), Schuetz
patent: 4728037 (1988-03-01), Mainhardt
patent: 4732325 (1988-03-01), Jensen et al.
patent: 4736890 (1988-04-01), Wallington
patent: 4739906 (1988-04-01), LoTurco
patent: 4749108 (1988-06-01), Dornsbusch et al.
patent: 4760937 (1988-08-01), Evezich
patent: 4798311 (1989-01-01), Workum
patent: 4917271 (1990-04-01), Kanner et al.

Affiliated with

Also associated with

Rating

Container for dispensing preservative-free preparations does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Container for dispensing preservative-free preparations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Container for dispensing preservative-free preparations will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-38977