Split Ring Having a Self-Regulating Throttle Gap
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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N/A
Issued Date -
Oct 1, 2015
app pub date -
Sep 17, 2013
filing date -
Oct 12, 2012
priority date (Note) -
Published
status (Latency Note)
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Importance

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Abstract
A self-regulating sealing element for a throttle gap between a rotating and a stationary components is provided. The sealing element includes a split ring located in the throttle gap between the rotating component and the housing and preferably configured as a U-shaped element that both axially overlaps a portion of the stationary housing at the throttle gap and provides an annular space between the split ring and the stationary housing. The split ring's axial overlapping regions provide a labyrinth seal effect, while the medium in the annular gap provides a self-regulating damper to accommodate eccentricities between the rotating and stationary components. The split ring may be a bi-metal split ring that is configured such that when at operating temperature the axially-overlapping portions of the ring generally conform to the axial faces of the stationary member portion at the throttle gap to further minimize medium leakage across the split ring.
First Claim
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Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
KSB AKTIENGESELLSCHAFT | JOHANN-KLEIN-STRASSE 9 FRANKENTHAL D-67227 |
International Classification(s)

- 2013 Application Filing Year
- F04D Class
- 1063 Applications Filed
- 941 Patents Issued To-Date
- 88.53 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Lenk, Jan Hendrik | Frankenthal, DE | 1 | 0 |
# of filed Patents : 1 Total Citations : 0 |
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Patent Citation Ranking
- 0 Citation Count
- F04D Class
- 0 % this patent is cited more than
- 10 Age
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
---|---|---|---|---|
11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Apr 1, 2027 |
Fee | Large entity fee | small entity fee | micro entity fee |
---|---|---|---|
Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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