Valve

Details Valve Valve

Filed on

2007-01-26

Date issued

2010-11-02

Examiner

Noland, Thomas P (Department: 2856)

Patent Class

Measuring and testing

SubClass

Sampler, sample handling, etc.

SubSubClass

Conduit or passageway section capture chamber

Other Related Categories

C073S061560, C073S061550, C137S625160

Type

Reexamination Certificate

Status

active

Patent number

07823468

Description

ABSTRACT:
A sample injector includes a rotary valve element with a straight passageway through it, which element may be rotated to connect a port communicating with a source of solvent with a port communicating with an inlet to a column. Another passageway connects two adjacent ports. The valve element may be rotated to one position in which it provides a straight path for sample to be injected, a second position in which it provides a path that connects a source of purge gas to the chromatographic system and a third position in which it provides a path that connects solvent to the column for preconditioning.

REFERENCES:
patent: 3940994 (1976-03-01), Klee et al.
patent: 3960003 (1976-06-01), Beyer et al.
patent: 3961534 (1976-06-01), Gundelfinger
patent: 3975946 (1976-08-01), Ball et al.
patent: 3999439 (1976-12-01), Munk
patent: 4242909 (1981-01-01), Gundelfinger
patent: 4444066 (1984-04-01), Ogle et al.
patent: 4476731 (1984-10-01), Charney et al.
patent: 4526686 (1985-07-01), Sisti et al.
patent: 4939943 (1990-07-01), Strohmeier
patent: 5616300 (1997-04-01), Ford et al.
patent: 6309541 (2001-10-01), Maiefski et al.
patent: 6382035 (2002-05-01), Nichols
patent: 6453929 (2002-09-01), Johnson et al.
patent: 6508938 (2003-01-01), Maiefski et al.
patent: 6526812 (2003-03-01), Martin et al.
patent: 6576125 (2003-06-01), Berger et al.
patent: 6802969 (2004-10-01), Tanimura
patent: 2001/0013494 (2001-08-01), Maiefski et al.
patent: 2003/0034307 (2003-02-01), Berger et al.
patent: 2003/0094415 (2003-05-01), Tanimura
patent: 2005/0194318 (2005-09-01), Ozbal et al.
patent: 2005/0236314 (2005-10-01), Neyer et al.

Affiliated with

Also associated with

Rating

Valve does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Valve, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Valve will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4156742