Cover for rotatable sample tray

Details Cover for rotatable sample tray Cover for rotatable sample tray

1978-08-21

1980-03-04

Norton, Donald F.

Purses, wallets, and protective covers

Protective cover made of flaccid material

For a racquet

141130, 206303, B67C 326

Patent

active

041912349

ABSTRACT:
The cover is made from a sheet of transparent plastic material and has a generally annular shape, i.e., the general shape of a flat ring, which is easily received over an annular rotatable sample tray having a plurality of sample cups therein. The cover has a horizontally radially extending projection adapted to engage a post on a table top supporting the sample tray to prevent rotation of the cover and an annular shoulder on the underside of the cover which fits around a circular envelope defined by the radially outwardly disposed top side edges of the sample cups in the sample tray and which engages the top side edges of the sample cups to prevent horizontal movement of the cover as the tops of the sample cups frictionally engage the underside of the cover and exert a moment force on the cover when the sample tray is rotated. The cover also has an opening therethrough for allowing liquid sample to be inserted or withdrawn from a sample cup when such sample cup is in registry with the opening.

REFERENCES:
patent: 2604249 (1952-07-01), Gorham
patent: 2997077 (1961-08-01), Rodrigues
patent: 3605435 (1969-12-01), Taylor
patent: 4131426 (1978-12-01), Range

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