Apparatus for the transfer of a defined specimen quantity from a

Details Apparatus for the transfer of a defined specimen quantity from a Apparatus for the transfer of a defined specimen quantity from a

1993-01-28

1995-01-24

Housel, James C.

Chemical apparatus and process disinfecting, deodorizing, preser

Control element responsive to a sensed operating condition

422 99, 422 63, 436174, 436180, 7386371, 7386373, 7386381, 7386385, B01L 302

Patent

active

053840950

ABSTRACT:
An apparatus for the transfer of a very small defined quantity of a specimen from an outer space to a reagent contained in a test chamber via a transfer slide mechanism that is displaceably disposed in a housing bore embodied as a sealing seat and that is provided with a channel that establishes the specimen quantity and is embodied as a capillary tube. The channel is adapted to be moved out of the filling position, where it is disposed in front of a receiving opening that communicates with the outer space in order to fill the channel with the specimen quantity, and into a test position in such a way that at the same time the receiving open is closed by the slide mechanism and the specimen quantity is introduced into the test chamber in order to empty the channel. The housing bore has an opening for communicating with the test chamber and is provided at this opening with a sealing lip that engages the slide mechanism in a sealing and wiping manner only when the slide mechanism is moved out of the filling position thereof and into the test position.

REFERENCES:
patent: 3100984 (1963-08-01), Martin
patent: 3939409 (1976-02-01), Hogg
patent: 4702114 (1987-10-01), Cabannes
patent: 4760805 (1988-08-01), Smith
patent: 4823622 (1989-04-01), Nohl et al.l
patent: 4932272 (1990-06-01), Hogg
patent: 4957706 (1990-09-01), Romette et al.
patent: 5012620 (1991-05-01), McNeil

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