Dispensing – Processes of dispensing
Patent
1977-04-19
1980-03-18
Skaggs, H. Grant
Dispensing
Processes of dispensing
222 95, 222105, 222153, 222340, G01F 1100
Patent
active
041935136
ABSTRACT:
The invention employs combination spring and sponge power to dispense fluids and semi-solids from a container. A spring or springs are preferably molded into a compressible foam mass, such as polyurethane, and the combination is then compressed and positioned within a container, along with the material to be dispensed. Expansion provides the dispensing power and additionally serves to fill the void which would otherwise be left in the container as the material is being dispensed. No aerosol type gases are employed. The material to be dispensed may be separated from the spring and sponge by a cup or circular plate. Further, the material to be dispensed, particularly if liquid, may be contained in a plastic bag and the spring and sponge are preferably contained in a plastic bag compressed and sealed and then locked for further venting ot the atmosphere. The evacuation of the bag's contents generally positioned above the spring and sponge will hold the contents in its natural state, as manufactured, until the spring/sponge/bag is vented to the atmosphere through an orifice in the container wall, thus making the container a mechanical pressurized device.
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patent: 1971450 (1934-08-01), Heitmuller et al.
patent: 2131498 (1938-09-01), Chandler
patent: 2649995 (1953-08-01), Muskin
patent: 2679336 (1954-05-01), Frick
patent: 2822165 (1958-02-01), Boschi
patent: 3130964 (1964-04-01), Johnson
patent: 3377003 (1968-04-01), Bacon et al.
patent: 3415277 (1968-12-01), Mitchell et al.
patent: 3561644 (1971-02-01), Works
patent: 3847304 (1974-11-01), Cohen
patent: 3938708 (1976-02-01), Burger
Brown Laurence R.
Skaggs H. Grant
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