| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 277584000 | Extrusion preventing (i.e., antiextrusion) structure | 7 |
| 20090121443 | Sealing Device - To reduce a shaft insertion load and prevent extrusion of a seal ring to the low pressure side, a sealing device ( | 05-14-2009 |
| 20090189358 | SELF-ENERGIZED BACKUP RING FOR ANNULAR SEALS - An apparatus is disclosed in one embodiment of the invention as including an annular seal (e.g., an o-ring) and a backup ring to provide support to the annular seal. A gland is provided to accommodate the backup ring and the annular seal. The gland has a contact surface which is adapted to contact a corresponding contact surface of the backup ring upon inserting the backup ring into the gland. The diameters of the contact surfaces of the backup ring and gland are sized such that the contact surface of the backup ring radially interferes with the contact surface of the gland, thereby urging the backup ring out of the gland. A retention mechanism, such as interlocking grooves, protrusions, ridges, notches, slots, or the like may be provided in the backup ring and gland respectively to prevent the backup ring from completely exiting the gland. | 07-30-2009 |
| 20090230632 | SYSTEM, METHOD AND APPARATUS FOR SEALING MATERIALS HAVING A LOW GLASS TRANSITION TEMPERATURE FOR HIGH PERFORMANCE SEALING APPLICATIONS - A seal is formed from one or more elastomeric materials having a low glass transition temperature for high pressure, and both high and low temperature sealing applications. In an exemplary embodiment, the glass transition temperature (Tg) of the material may be −35° C. or lower. The seal is adapted to repeatedly form and maintain a seal across a temperature range from 0° C. or lower to +122° C. or greater at pressures up to 15,000 p.s.i.g. or greater. The invention has numerous applications, such as for land-based use, marine surface and marine subsea uses. An anti-extrusion device may circumscribe the upper and lower edges of the material body. The invention also comprises fabrication methods for elastomer or polymeric seals. | 09-17-2009 |
| 20090267307 | High Pressure Tube Seal - A high pressure tube seal is provided including a rigid cylindrical tube having an elastomeric seal body molded to an outer surface of the cylindrical tube. The elastomeric seal body includes a pair of raised seal bead portions at opposite ends of the seal body and a pair of recessed groove portions adjacent to the pair of recessed seal bead portions. A pair of anti-extrusion rings are disposed in the recessed groove portion in the cylindrical tube and includes a radially outwardly extending annular portion disposed between a pair of recessed groove portions of the elastomeric seal body. The anti-extrusion rings provide increased pressure sealing capability as compared to conventional tube seal designs. | 10-29-2009 |
| 20100230905 | Shaft Sealing Device for a Fluid Machine - A shaft sealing device ( | 09-16-2010 |
| 20160123468 | SEAL FOR AN OIL SEALED BEARING ASSEMBLY - There is provided a seal assembly for sealing against an outer surface of a rotating shaft. The seal assembly has a seal housing with an inner surface defining a central bore sized to receive the shaft and a seal-receiving groove formed in the inner surface and open to the central bore. An elastomeric seal having first and second side surfaces and an inner seal surface extending between the first and second side surfaces is positioned within the seal-receiving groove, and the inner seal surface sealingly engages the rotating shaft in operation. The seal assembly has an anti-extrusion ring formed from a pliable material and being a split ring positioned within the seal groove adjacent to the first side surface of the elastomeric seal, such that the inner diameter of the anti-extrusion ring conforms to the outer diameter of the shaft in response to pressure applied by the elastomeric seal. | 05-05-2016 |
| 20160178070 | PLUG VALVE SEAL | 06-23-2016 |
