Test sample changer

Details Test sample changer Test sample changer

1991-05-22

1994-03-29

Bucci, David A.

Material or article handling

Device for emptying portable receptacle

Nongravity type

414223, 414331, 414787, 221 79, 221 82, B65G 112

Patent

active

052979229

ABSTRACT:
A sample changer for precise positioning of a selected sample from a plurality of samples stored on a removable annular sample file. The samples comprising a rectangular dimensioned object is radially removed from the annular cassette and precisely positioned at a predetermined location for testing. Upon completion of the desired testing, the sample is replaced into the cassette which is repositioned and a subsequently selected sample is accordingly extracted and positioned for testing. Furthermore, the present invention includes a combination of elements which act together to detect and dislodge samples which may become temporarily stuck or jammed in the mechanism, reducing the need for operator intervention. Furthermore, the annular cassette is removable from the sample changing mechanism and includes a concentric locking ring which selectively retains all samples within the cassette or permits the removal of all samples. The sample changer mechanism includes a stationary arcuate slide retainer wherein the slides released by the annular locking ring are retained within the cassette mechanism until selectively positioned and lowered into the mechanism for testing.

REFERENCES:
patent: 2687825 (1954-08-01), Galin et al.
patent: 3409116 (1968-11-01), O'Malley
patent: 4356829 (1982-11-01), Furaya
patent: 4385712 (1983-05-01), Maspero
patent: 4405060 (1983-09-01), Hsei
patent: 4516899 (1985-05-01), Wood et al.
patent: 4589467 (1986-05-01), Hunter
patent: 4765793 (1988-08-01), Goddeau
patent: 4832555 (1989-05-01), Gordon
patent: 4840530 (1989-06-01), Nguyen
patent: 4854477 (1989-08-01), Kurosawa et al.
patent: 5009330 (1991-04-01), Young et al.

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