Chemical apparatus and process disinfecting – deodorizing – preser – Control element responsive to a sensed operating condition
Patent
1990-10-16
1993-03-16
Warden, Robert J.
Chemical apparatus and process disinfecting, deodorizing, preser
Control element responsive to a sensed operating condition
422 73, 7386421, 7386423, 7386425, B01L 302, G01N 3300, G01N 3506
Patent
active
051942267
ABSTRACT:
In a dosing device for analyzing apparatus, particulary for liquid chromatography, with a dosing loop, a change-over valve and a dosing needle (20) which can be introduced into a sample inlet (56) of the change-over valve (24), through which dosing needle (20) sample liquid can be dosed by means of a sample pump (66) into the sample inlet (56) and the dosing loop (22), the dosing needle (20) has a conical sealing surface (138) at its front end. The sample inlet (56) has a sample inlet passage (128) which forms a conical annular shoulder (136). The dosing needle (20) with its conical sealing surface (138) engages this annular shoulder (136) with a defined pre-stress.
REFERENCES:
patent: 3530721 (1970-09-01), Hrdina
patent: 3604267 (1971-09-01), Johns
patent: 3797318 (1974-03-01), Palm
patent: 4094196 (1978-06-01), Friswell
patent: 4242909 (1981-01-01), Gundelfinger
patent: 4286637 (1981-09-01), Wilson
patent: 4294126 (1981-10-01), Tomoff et al.
patent: 4312591 (1982-01-01), Tomoff
patent: 4393726 (1983-07-01), Tamm et al.
patent: 4413534 (1983-11-01), Tomoff et al.
patent: 4443105 (1984-04-01), Huber et al.
patent: 4444066 (1984-04-01), Ogle et al.
patent: 4484483 (1984-11-01), Riegger et al.
patent: 4539855 (1985-09-01), Jacobs
patent: 4558603 (1985-12-01), Chlosta et al.
patent: 4620452 (1986-11-01), Seki
patent: 4705667 (1987-11-01), Marsoner et al.
patent: 4713974 (1987-12-01), Stone
patent: 4888998 (1989-12-01), Buzza et al.
patent: 4939943 (1990-07-01), Strohmeier
patent: 4980296 (1990-12-01), Trisciani et al.
Chlosta Wolfgang
Klemm Henry
Lochle Viktor
Tomoff Toma
Bodenseewerk Perkin-Elmer GmbH
Grimes Edwin T.
Kim Christopher Y.
Warden Robert J.
LandOfFree
Dosing device for analyzing apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Dosing device for analyzing apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dosing device for analyzing apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-349881