Filtration unit

Details Filtration unit Filtration unit

1982-12-21

1984-11-27

Wyse, Thomas

Liquid purification or separation

Filter

Receptacle and modified spacing surface or support for...

210472, 210474, B01D 2320

Patent

active

044850158

ABSTRACT:
An integral spacer formed as part of a filtration column frictionally engages a sample container and permits air to escape from the container as it is filled. One embodiment of the filtration column has a series of spaced-apart projecting wedges around its lower edge which frictionally engage the rim of a sample cup or container, such as a test tube, to provide air passages for the air to escape. Another embodiment of the filtration column has an integral, downwardly depending cap which is spaced away from the rim portion of the sample cup by a series of internal projections which contact the rim of the sample cup and provide air passages between the sample cup rim and the depending cap.

REFERENCES:
patent: 3295686 (1967-01-01), Krueger
patent: 3334574 (1967-08-01), Douglas
patent: 3819055 (1974-06-01), Skinner
patent: 4214993 (1980-07-01), Forsythe

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