Liquid purification or separation – With means to add treating material – Chromatography
Patent
1992-06-29
1993-08-10
Therkorn, Ernest G.
Liquid purification or separation
With means to add treating material
Chromatography
210101, 210188, 366341, B01D 1508
Patent
active
052345874
ABSTRACT:
To supply a programmed gradient to a high pressure pump for introduction into a column, a mixer, degasser and accumulator communicates with the high pressure pump to supply fluid thereto, having a volumn no more than 150 times the chamber volume of the high pressure pump. The mixer, degasser and accumulator includes temperature sensors which sense when the mixer, degasser and accumulator has been emptied to a level where it cannot respond to a demand for fluid from said high pressure pump and provides a signal to a low pressure pump which responds by cycling to again fill the mixer, degasser and accumulator. Upon receiving a demand signal, the low pressure pump fills by drawing fluid from a plurality of fluid sources to compose the gradient being used at that time, with the pump slowing during valve opening and closing so as to avoid cavitation.
REFERENCES:
patent: 707567 (1902-08-01), Edson
patent: 2729338 (1956-01-01), Heigel
patent: 3701609 (1972-10-01), Bailey
patent: 3771542 (1973-11-01), Williams
patent: 3985019 (1976-10-01), Boehme
patent: 3985021 (1976-10-01), Achener
patent: 4054522 (1977-10-01), Pinkerton
patent: 4116046 (1978-09-01), Stein
patent: 4128476 (1978-12-01), Rock
patent: 4136708 (1979-01-01), Cosentino
patent: 4137011 (1979-01-01), Rock
patent: 4233156 (1980-11-01), Tsukada
patent: 4310420 (1982-01-01), Honishi
patent: 4311586 (1982-11-01), Baldwin
patent: 4388184 (1983-06-01), Brous
patent: 4422942 (1983-12-01), Allington
patent: 4437812 (1984-03-01), Abu-Shumays
patent: 4448692 (1984-05-01), Nakamoto
patent: 4595495 (1986-06-01), Yotam
patent: 4600365 (1986-07-01), Riggenmann
patent: 4733152 (1988-03-01), Allington
patent: 4869374 (1989-09-01), Allington
patent: 4986919 (1991-01-01), Allington
Monitoring Solenoid Valve Position by Lewis Research Center Instrumentation.
Kratos, Spectroflow 430, Publication #251-42221 (1984) pp. 1 and 2.
Allington Robert W.
Jameson Daniel G.
Carney Vincent L.
Isco, Inc.
Therkorn Ernest G.
LandOfFree
Gradient system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Gradient system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gradient system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1723033