Dispensing – With filter
Patent
1995-06-05
1996-09-24
Shaver, Kevin P.
Dispensing
With filter
2223865, 222399, 604145, B65D 8314
Patent
active
055582559
ABSTRACT:
A liquid dispensing device and the method of dispensing liquid are disclosed. The device is uniquely suited to meet the requirements of hospitals and other institutions for long shelf life in inert condition and ready activation when needed. The device includes a hollow gas- and liquid-tight casing (preferably spherical or cylindrical), a flexible gas- and liquid-tight membrane disposed entirely across the casing interior dividing the interior into a propellant chamber and a liquid chamber; an outlet port from the liquid chamber; two mutually reactive chemicals in the propellant chamber but separated by a barrier; and a member to breach the barrier and permit the chemicals to come into contact; the two chemicals being reactive upon contact to form a propellant gas. The propellant gas thereupon expands against the membrane, moves the membrane to enlarge the propellant chamber, decrease the liquid chamber, and expel the contained liquid from the liquid chamber through the outlet port. The barrier may be breached in any convenient manner, as by breaking a frangible barrier or perforating a perforable one. Preferably at least one of the chemicals is in liquid form, and one is a Group I or II metal carbonate or bicarbonate while the other is an acid, acid anhydride or acid salt; the most preferred combination is sodium carbonate and citric acid.
REFERENCES:
patent: 524377 (1894-08-01), Carr
patent: 1469501 (1923-10-01), Dollin
patent: 1731767 (1929-10-01), Cramer
patent: 1832817 (1931-11-01), Pearsons
patent: 2105690 (1938-01-01), Greenblatt
patent: 2381749 (1945-08-01), Hull et al.
patent: 2815152 (1957-12-01), Mills
patent: 2912018 (1959-11-01), Leech
patent: 3023750 (1962-03-01), Baron
patent: 3053422 (1962-09-01), Tenison et al.
patent: 3153414 (1964-10-01), Beall et al.
patent: 3178075 (1965-04-01), Riedl et al.
patent: 3367545 (1968-02-01), Cook
patent: 3405845 (1968-10-01), Cook et al.
patent: 3585982 (1971-06-01), Hollinshead
patent: 3640277 (1972-02-01), Adelberg
patent: 3662929 (1972-05-01), Sims
patent: 3667652 (1972-06-01), Morane et al.
patent: 3718236 (1973-02-01), Reyner et al.
patent: 3736930 (1973-06-01), Georgi
patent: 3756556 (1973-09-01), Georgi
patent: 3778971 (1973-12-01), Granger
patent: 3800794 (1974-04-01), Georgi
patent: 3803810 (1974-04-01), Rosenberg
patent: 3840009 (1974-10-01), Michaels et al.
patent: 3894538 (1975-07-01), Richter
patent: 3949911 (1976-04-01), Morane
patent: 3993061 (1976-11-01), O'Leary
patent: 3994294 (1976-11-01), Knute
patent: 4012203 (1977-03-01), Rosiere
patent: 4013422 (1977-03-01), Spinner
patent: 4037598 (1977-07-01), Georgi
patent: 4049158 (1977-09-01), Lo et al.
patent: 4067332 (1978-01-01), O'Leary
patent: 4080967 (1978-03-01), O'Leary
patent: 4137913 (1979-02-01), Georgi
patent: 4203441 (1980-05-01), Theeuwes
patent: 4235236 (1980-11-01), Theeuwes
patent: 4237881 (1980-12-01), Beigler et al.
patent: 4331728 (1982-05-01), Theeuwes
patent: 4360131 (1982-11-01), Reyner
patent: 4373341 (1983-02-01), Mahaffy et al.
patent: 4376500 (1983-03-01), Banks et al.
patent: 4379453 (1983-04-01), Baron
patent: 4478044 (1984-10-01), Magid
patent: 4491250 (1985-01-01), Liebermann
patent: 4507116 (1985-03-01), Leibinsohn
patent: 4510734 (1985-04-01), Banks et al.
patent: 4511355 (1985-04-01), Franetzki et al.
patent: 4513884 (1985-04-01), Magid
patent: 4518103 (1985-05-01), Lim et al.
patent: 4553685 (1985-11-01), Magid
patent: 4626241 (1986-12-01), Campbell et al.
patent: 4634430 (1987-01-01), Polaschegg
patent: 4640445 (1987-02-01), Yamada
patent: 4646946 (1987-03-01), Reyner
patent: 4648995 (1987-03-01), Maget
patent: 4675020 (1987-06-01), McPhee
patent: 4679706 (1987-07-01), Magin et al.
patent: 4687423 (1987-08-01), Maget et al.
patent: 4734092 (1988-03-01), Millerd
patent: 4785972 (1988-11-01), LeFevre
patent: 4802343 (1989-02-01), Rudick et al.
patent: 4804366 (1989-02-01), Zdeb et al.
patent: 4847093 (1989-07-01), Ayer
patent: 4850978 (1989-07-01), Dudar et al.
patent: 4886514 (1989-12-01), Maget
patent: 4893730 (1990-01-01), Bolduc
patent: 4896794 (1990-01-01), Banks et al.
patent: 4898209 (1990-02-01), Zdeb
patent: 4902278 (1990-02-01), Maget et al.
patent: 4923095 (1990-05-01), Dorfman et al.
patent: 4936829 (1990-06-01), Zdeb et al.
patent: 5009340 (1991-04-01), Morane
patent: 5022564 (1991-06-01), Reyner
patent: 5024657 (1991-06-01), Needham et al.
patent: 5035351 (1991-07-01), Moran
patent: 5049129 (1991-09-01), Zdeb et al.
patent: 5054651 (1991-10-01), Morane
patent: 5057285 (1991-10-01), Belt et al.
patent: 5080652 (1992-01-01), Sancoff et al.
patent: 5082558 (1992-01-01), Burris
patent: 5106374 (1992-04-01), Apperson et al.
patent: 5116316 (1992-05-01), Sertic et al.
patent: 5137186 (1992-08-01), Moran
patent: 5167631 (1992-12-01), Thompson et al.
patent: 5179982 (1993-01-01), Berube et al.
patent: 5333763 (1994-08-01), Lane et al.
Doyle Mark C.
Field Frederic P.
Sancoff Gregory E.
River Medical, Inc.
Shaver Kevin P.
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