Stuffing box and packing rings for use therein
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United States of America Patent
Stats
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Feb 27, 2018
Issued Date -
N/A
app pub date -
Jan 15, 2016
filing date -
Jan 15, 2016
priority date (Note) -
In Force
status (Latency Note)
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Importance

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Abstract
A packing ring is disclosed for sealingly engaging a movable rod member within a stuffing box having an internal cavity. In an embodiment, the packing ring includes a carrier and a sealing ring mounted to the carrier. The sealing ring is configured to sealingly engage with an outer surface of the rod when the rod is disposed within the internal cavity. The carrier includes a radially outer surface that is configured to sealingly engage with an internal surface of the stuffing box. In addition, the carrier includes a radially inner surface that is proximate to an outer surface of the rod when the rod extends through the stuffing box. Further, the carrier includes a plurality of lubrication grooves each groove extending from the radially outer surface to the radially inner surface and configured to convey a lubricant flow between the radially outer surface and the radially inner surface.

First Claim
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- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
NATIONAL OILWELL VARCO L P | 7909 PARKWOOD CIRCLE DRIVE HOUSTON TX 77036 |
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- [Patents Count]
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Rappenecker, Jeremy Michael | Bethlehem, US | 3 | 18 |
Ruffin, Joshua Ryan | Tomball, US | 1 | 6 |
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