Chemical apparatus and process disinfecting – deodorizing – preser – Control element responsive to a sensed operating condition
Patent
1983-11-18
1985-07-09
Bernstein, Hiram H.
Chemical apparatus and process disinfecting, deodorizing, preser
Control element responsive to a sensed operating condition
356246, 422 99, B01L 300, G01N 128
Patent
active
045281874
ABSTRACT:
This apparatus involves an assembly of a test tube and paddle insert. The tube has a frustoconical body and a tapered tip in which is a well, having opposed tapered wide flat walls and narrow walls. The paddle insert has a long handle integral with a transparent tapered paddle head that is shorter than the tapered well in which the paddle head seats. Flexible fingers extend away from the head to frictionally engage the narrow walls of the well and prevent the paddle from falling out of the tube when the tube is inverted or tipped. A ridge on the edges of the side walls and the back of the paddle head retains a specimen in a narrow chamber defined between adjacent walls of the tube tip, the paddle head and the ridge for microscopic examination thereof.
REFERENCES:
patent: 3027799 (1962-04-01), Weichselbaum
patent: 3814522 (1974-06-01), Clark et al.
patent: 4066414 (1978-01-01), Selby
patent: 4308028 (1981-12-01), Elkins
patent: 4427634 (1984-01-01), Truglio
"Developments", Cole-Parmer Instrument and Equipment Co., Chicago, Sep., 1957, p. 10.
Bernstein Hiram H.
Delahunty Carol M.
Loveman Edward H.
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