Dispensing – Processes of dispensing
Patent
1994-11-18
1996-09-10
Kaufman, Joseph A.
Dispensing
Processes of dispensing
222 835, 222 88, 222 96, 222105, 2221461, 222390, 222492, 239132, G01E 1100
Patent
active
055537405
ABSTRACT:
A device for pumping controlled amounts of flowable materials having a wide range of viscosities, such as condiments for food, from a bag having flexible walls. The device is comprised of a container to hold the flexible bag, a piston to drive a controlled motion mechanism to compress the bag, a sealing mechanism to seal the bag to constrain flow through a wide range of nozzles, a cutting device to pierce the bag when a seal has been obtained, an exit nozzle(s) to discharge the fluid and to maintain the temperature of the exit nozzle(s). Multiple connections may be made to multiple dispensing points. Dispensing of exact quantities of the flowable material is accomplished by controlling the position of the piston by a stepping servomechanism to displace an exact volume of the flowable material at the exit nozzle. Nozzle temperature is equalized to that of the material in the container by provision of air passages through the nozzle. An alternate embodiment uses a pressure feedback device to control the piston mechanism, this approach applies constant pressure to the flowable material and is used when a variable amount of product is required.
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Brummett Barry J.
Hutchings Douglas S.
King Gregory D.
King Kenyon M.
Carroll Leo R.
Kaufman Joseph A.
Restaurant Automation Development Co.
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