Dispensing – Resilient wall – Fluid pressure generating pump or pulsator and/or removable...
Patent
1990-04-30
1991-09-17
Huppert, Michael S.
Dispensing
Resilient wall
Fluid pressure generating pump or pulsator and/or removable...
222215, 222394, 604295, 401185, B65D 3700
Patent
active
050487272
ABSTRACT:
A unit dose dispenser for dispensing a composition includes a compressible, air filled container in communication with an open end of a tube filled with the composition. The opposite end of the tube through which the composition is dispensed is sealed with a removable closure cap to maintain sterility of the composition prior to use. By removing the cap and applying external pressure to compress the container, air is forced to enter the tube and eject, by displacement, composition from the tube. To completely eject the predetermined dosage that completely fills the tube, the volume of air or other gaseous propellant within the compressible container is greater than the volume of the unit dose.
REFERENCES:
patent: 1546940 (1925-07-01), Pennington
patent: 2332798 (1943-10-01), Hunn
patent: 2800253 (1957-07-01), Henderson
patent: 3128920 (1964-04-01), Volckeniuh et al.
patent: 4299258 (1981-11-01), Brite
patent: 4331264 (1982-05-01), Staar
patent: 4338936 (1982-07-01), Nelson
patent: 4398909 (1983-08-01), Portnoff
patent: 4416397 (1983-11-01), Brown
Alcon Laboratories Inc.
Arno James A.
Brown Gregg C.
DeRosa Kenneth R.
Huppert Michael S.
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