Circumferential seal for a vacuum pressure chamber on a metering device
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United States of America Patent
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Mar 28, 1995
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N/A
app pub date -
Jul 23, 1993
filing date -
Jul 29, 1992
priority date (Note) -
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Abstract
A circumferential seal for the clearance space or gap between a vacuum pressure chamber formed by a trough-shaped casing and a revolving transporting disk of a metering device for sealing the vacuum pressure chamber, and preferably, it is used for a single-grain sowing machine.
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