A - Human Necessities – 61 – M
Patent
A - Human Necessities
61
M
182/112
A61M 5/16 (1980.01)
Patent
CA 1162153
TITLE FILTRATION UNIT ABSTRACT OF THE DISCLOSURE 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 embod- iment 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, down- wardly depending cap which is spaced away from the rim por- tion of the sample cup by a series of internal projections which contact the rim of the sample cup and provide air pas- sages between the sample cup rim and the depending cap.
369315
Frayne & Company Robert
Smith Norman H.
LandOfFree
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