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| Number | Title | Issue Date |
| 6698669 | Pivot flow joint for high-pressure flow devices A pivot flow joint for high-pressure fluid-flow devices of the type including a rotating flow member connected to a non-rotating flow member. The pivot flow joint includes first and second axially-aligned seal bushings secured to the non-rotating and rota... | 03/02/2004 |
| 6481762 | Pipe coupling A pipe coupling for attachment to a pipe includes a sleeve. One end of the sleeve is configured to receive a pipe end. The pipe coupling also includes an annular gasket disposed within the end of the sleeve for encircling the pipe end. The coupling includ... | 11/19/2002 |
| 5653479 | Vacuum seal for a ball junction A vacuum seal for a ball junction between a low pressure chemical vapor deposition (LPCVD) chamber and a vacuum system. In one implementation, the LPCVD chamber is a quartz tube used for deposition of certain chemicals onto and into semiconductor substrat... | 08/05/1997 |
| 5316351 | Hose swivel A swivel for transmitting fluid be sing and female housing includes a bearing assembly and seal ring assembly. The seal ring assembly comprises a pair of seal rings each including a plastic ring having a generally U-shaped cross-sectional configuration de... | 05/31/1994 |
| 5131667 | Hose coupling gasket An improved hose coupling gasket in which the standard gasket retaining flange is modified to include an additional sealing bead strategically formed on the upper surface of the flange such as to engage the adjacent surface of the gasket retaining groove ... | 07/21/1992 |
| 4886303 | Coupling with improved elastomeric face seal A quick-connect coupling is disclosed for manually joining together pipe or hose sections or the like. A pair of identical coupling bodies are provided, each containing an elastomeric annular face seal, and adapted for sealing engagement with a correspond... | 12/12/1989 |
| 4630630 | Hydrostatic hydraulic coupling A fluid-tight connection between a pair of pipes containing hydraulic fluid is formed by a pair of connectors of the invention. Each connector has a body part engaged respectively with the pipes, the body parts being coupled together by a coupling sleeve ... | 12/23/1986 |
| 4359889 | Self-centering seal for use in hydraulically expanding tubes In a device for confining a pressurized working fluid within a tube to be expanded radially, a support to be positioned axially within the tube and at least one sealing member encircling the support. The sealing member is deformable so that it expands rad... | 11/23/1982 |
| 4139223 | Irrigation pipe coupler The specification discloses a torque coupling having two tubular coupling members having flanges with interlocking teeth wedged together by a clamping ring. The flanges have opposed grooves in which are positioned elastomer sealing rings having shallow gr... | 02/13/1979 |
