Liquid purification or separation – With means to add treating material – Chromatography
Reexamination Certificate
2005-10-11
2009-08-25
Therkorn, Ernest G (Department: 1797)
Liquid purification or separation
With means to add treating material
Chromatography
C210S656000, C210S456000
Reexamination Certificate
active
07578934
ABSTRACT:
A seal on a movable top or bottom plate for use in a chromatography column. The plate is formed of a flow distributor connected to one or more movement rods that control the movement of the top plate within a chromatography column. The plate is formed of two pieces, a flow distributor and a seal plate. The seal plate is mounted on top of the flow distributor and has a seal that is essentially co-terminal with the outer edge of the flow distributor. The seal plate is attached to the flow distributor by one or more pins or threaded bolts and forms a space between them. The one or more pins contain one or more compression means for biasing the seal plate against the flow distributor. An opening is formed in the seal plate for the selective introduction of a pressurized energy source such as compressed air, gas or hydraulic fluid into the space to overcome the compression means. One or more seals are arranged between the seal plate and distributor to maintain the pressurized energy source between the two of them. Optionally the space may contain a closed bladder or reservoir connected to the opening to contain the pressurized energy source.
REFERENCES:
patent: 3265215 (1966-08-01), Emneus et al.
patent: 4597866 (1986-07-01), Couillard
patent: 4636315 (1987-01-01), Allen, Jr.
patent: 4797209 (1989-01-01), Jackson
patent: 4891133 (1990-01-01), Colvin, Jr.
patent: 4927531 (1990-05-01), Sakamoto et al.
patent: 5141635 (1992-08-01), Chabrol et al.
patent: 5324426 (1994-06-01), Joseph et al.
patent: 5378361 (1995-01-01), Baeckstrum et al.
patent: 6001253 (1999-12-01), Conroy et al.
patent: 6132605 (2000-10-01), Leavesley et al.
patent: 6139732 (2000-10-01), Pelletier
patent: 6224760 (2001-05-01), Davies et al.
patent: 6736974 (2004-05-01), Mann
patent: 476996 (1992-03-01), None
Dunkley John Graham
Frazer Neil Francis
Gill Melvyn
Purdom Geoff
Millipore Corporation
Therkorn Ernest G
LandOfFree
Chromatographic column seal does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Chromatographic column seal, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Chromatographic column seal will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4104498