Measuring and testing – Volume or rate of flow – Combined
Patent
1997-09-24
1998-11-24
Oen, William L.
Measuring and testing
Volume or rate of flow
Combined
G01F 1502
Patent
active
058410279
ABSTRACT:
A system for dispensing mixed beverages has a processor to control the liquid dispensed at an outlet in dependence upon the demand of a user as input to a keypad. Carbonated water is fed to the outlet by way of tubing and a syrup concentrate is also fed therto by way of a tubing. The water and syrup is mixed in the correct quantities by way of respective proportional valves which adjust the quantity or flow rate of the two consituents fed through a mixing chamber in accordance with flow rate readings provided to the processor by respective flow transducers. The flow transducers measure the speed of flow ultrasonically and are able to provide flow rate readings at a rate of 50 per second. The proportional valves are able to adjust the quantities fed to the mixing chamber at a similar rate such that the mix can be reliably determined even if there are transitory pressure drops or viscosity changes in the system.
REFERENCES:
patent: 3365593 (1968-01-01), Roof
patent: 3797526 (1974-03-01), Champeon
patent: 3980002 (1976-09-01), Jarmon
patent: 4140012 (1979-02-01), Hendriks
patent: 4144752 (1979-03-01), Lolk
patent: 4248270 (1981-02-01), Ostrowski
patent: 4325262 (1982-04-01), Meisser
patent: 4469976 (1984-09-01), Scott
patent: 4487333 (1984-12-01), Pounder
patent: 4500002 (1985-02-01), Zukausky
patent: 4500067 (1985-02-01), Zukausky
patent: 4558249 (1985-12-01), Lerch et al.
patent: 4577132 (1986-03-01), Ohigashi
patent: 4728844 (1988-03-01), Wilson
patent: 4955507 (1990-09-01), Kirschner
patent: 5033644 (1991-07-01), Tentler
patent: 5048790 (1991-09-01), Wells
patent: 5082240 (1992-01-01), Richmond
Lewin, et al: "Wide-band piezoelectric polymer acoustiv source", IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, vol. 35, No. 2, Mar. 1988, pp. 175-184.
AZTEC Development Ltd
Oen William L.
LandOfFree
Piezoelectric flow transducer does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Piezoelectric flow transducer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Piezoelectric flow transducer will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1704803