Chemistry: molecular biology and microbiology – Apparatus – Bioreactor
Patent
1987-09-25
1989-05-23
Jones, Larry
Chemistry: molecular biology and microbiology
Apparatus
Bioreactor
435291, C12M 136
Patent
active
048330884
ABSTRACT:
A quantitative measuring instrument includes a casing with a cavity for a reagent strip handling mechanism. The mechanism includes a slide with a resiliently biased toggle member for providing snap action of the slide between an open, reagent strip loading position and a closed, quantitative measuring position. A light seal is mounted on the toggle member that engages each reagent strip in the closed position of the slide. In a first, alternative embodiment of the instrument, the slide mechanism includes a cam arm that engages cam surfaces on the instrument raising the cam arm to an open, reagent strip loading position from a closed, reagent strip holding position. In this embodiment the slide can be removed from the instrument and cleaned. In a second alternative embodiment the slide includes a first detent corresponding to a closed position of the slide and a second detent corresponding to an open position. A pair of spring fingers are mounted in the cavity of the instrument casing. One of the spring fingers engages the first detent in the closed position and the second spring finger engages the second detent in the open position providing resistance that defines the two positions. The slide in this embodiment can also be removed and cleaned.
REFERENCES:
patent: 3526480 (1970-09-01), Findl et al.
patent: 3999948 (1976-12-01), Deindoerfer et al.
patent: 4250257 (1981-02-01), Lee et al.
patent: 4515889 (1985-05-01), Klose et al.
Desimone Joseph P.
Heiland Robert J.
Moulton Joseph L.
Pugh Jerry T.
Purcell D. Glenn
Coe Roger N.
Jones Larry
Miles Inc.
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