Chromatographic device with piston locking mechanism and method

Details Chromatographic device with piston locking mechanism and method Chromatographic device with piston locking mechanism and method

1997-12-23

1999-09-14

Therkorn, Ernest G.

Liquid purification or separation

Processes

Chromatography

2101982, B01D 1508

Patent

active

059518731

ABSTRACT:
A chromatographic device comprising a column body having a first end and a closed second end. The device further includes a piston inside the column body, a chromatographic medium, a rod, and a locking mechanism. The chromatographic medium is within the column body and between the piston and the second end. The rod has a longitudinal rod axis and is operatively engageable with the piston for pressing the piston in the column body. The locking mechanism is adapted for locking the rod relative to the column body in a manner to prevent movement of the rod relative to the column body in an outward longitudinal direction away from the piston without preventing movement of the rod relative to the column body in an inward longitudinal direction toward the piston. Preferably, the chromatographic device includes a spring for exerting a constant axial compression against the piston to prevent the formation of voids in the packing medium.

REFERENCES:
patent: D285290 (1986-08-01), Shalon et al.
patent: 4350595 (1982-09-01), Gunkel
patent: 4361482 (1982-11-01), Teetz et al.
patent: 4451365 (1984-05-01), Sattler et al.
patent: 4597866 (1986-07-01), Couillard
patent: 4675105 (1987-06-01), Martin et al.
patent: 4710289 (1987-12-01), Wermuth et al.
patent: 4719011 (1988-01-01), Shalon et al.
patent: 4737292 (1988-04-01), Ritacco et al.
patent: 4769141 (1988-09-01), Couillard
patent: 4865728 (1989-09-01), Larsson
patent: 4882047 (1989-11-01), Shalon
patent: 4891133 (1990-01-01), Colvin, Jr.
patent: 5137628 (1992-08-01), Hart et al.
patent: 5169522 (1992-12-01), Shalon et al.
patent: 5192433 (1993-03-01), Shalon
patent: 5213683 (1993-05-01), Mann
patent: 5366621 (1994-11-01), Bidell
patent: 5378361 (1995-01-01), Baeckstrum
patent: 5423982 (1995-06-01), Jungbauer et al.
patent: 5462659 (1995-10-01), Saxema et al.
patent: 5531810 (1996-07-01), Fullemann

Affiliated with

Also associated with

Rating

Chromatographic device with piston locking mechanism and method 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 device with piston locking mechanism and method , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Chromatographic device with piston locking mechanism and method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1507363