Vacuum pump with longitudinal and annular seals
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United States of America Patent
Stats
-
Jan 24, 2017
Grant Date -
Jan 16, 2014
app pub date -
Jan 17, 2012
filing date -
Mar 22, 2011
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A multi-stage vacuum pump may include first and second half-shell components defining a plurality of pumping chambers and for assembly together along respective longitudinal extending faces; first and second end stator components for assembly at respective longitudinal seals for sealing between the first and second half-shell stator components when assembled together at the longitudinally extending faces; and annular seals for sealing between the first and second end stator components and the first and second half-shell stator components when assembled; wherein the longitudinal seals have end portions which abut against the annular seals for sealing therebetween and the first and second half-shell stator components have formations for resisting movement of the end portions away from the annular seals when the end portions are compressed between the first and second half-shell stator components.
First Claim
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International Classification(s)
- 2012 Application Filing Year
- F04B Class
- 820 Applications Filed
- 689 Patents Issued To-Date
- 84.03 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- F04B Class
- 0 % this patent is cited more than
- 8 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jul 24, 2028 |
