Low volume vacuum source for leak test fixture
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
N/A
Issued Date -
Jun 13, 2002
app pub date -
Dec 8, 2000
filing date -
Dec 8, 2000
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A low volume vacuum source that utilizes a mechanical vacuum generating device. In particular, a syringe is used as a vacuum source and is connected through a check valve to a test fixture of a cascade impactor that is used for classifying particles. The test fixture has fluid passageways that seal onto the chambers of the compactor, and by pulling and retracting the syringe piston, the vacuum is generated in the test fixture. The vacuum level is measured with a gauge. A check valve in the syringe outlet line prevents bleed back of the vacuum once vacuum has been formed. A separate bleed valve can be opened for relieving the vacuum applied to the test fixture.
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