CA2059594A1 - Pipe Coupling - Google Patents
Pipe CouplingInfo
- Publication number
- CA2059594A1 CA2059594A1 CA 2059594 CA2059594A CA2059594A1 CA 2059594 A1 CA2059594 A1 CA 2059594A1 CA 2059594 CA2059594 CA 2059594 CA 2059594 A CA2059594 A CA 2059594A CA 2059594 A1 CA2059594 A1 CA 2059594A1
- Authority
- CA
- Canada
- Prior art keywords
- sealing
- component
- coupling
- slope
- load
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
- Earth Drilling (AREA)
Abstract
A pipe coupling or connection comprises a female coupling component and a mating male coupling component. Each component is matingly threaded for coupling engagement, and each is provided with an adjacent frusto-conical sealing surface. The sealing surface is provided with a controlled surface roughness, viz. very shallow fine surface variations, preferably formed as microgrooves at a pitch small relative to the pitch of the threads. The slope of the frusto-conical surface of the sealing area of the male component is slightly mismatched with that of the sealing area of the female component to simulate the bearing force vs. axial distance characteristic of shrunk-fit circular cylindrical sealing surfaces. The slight mismatch enables the sealing pressure to be above a design minimum throughout the entire sealing area yet higher at each end of the sealing area.
As the coupling is assembled, thread interference in the vicinity of the sealing surface lags the occurrence of interference between the sealing surfaces. Load threads are provided with negatively inclined load flank faces. The slope of the load thread pitch line of the male element is slightly steeper than the slope of the load thread pitch line of the female element.
As the coupling is assembled, thread interference in the vicinity of the sealing surface lags the occurrence of interference between the sealing surfaces. Load threads are provided with negatively inclined load flank faces. The slope of the load thread pitch line of the male element is slightly steeper than the slope of the load thread pitch line of the female element.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/770,566 | 1991-10-03 | ||
US07/770,566 US5330239A (en) | 1990-01-19 | 1991-10-03 | Pipe coupling |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2059594A1 true CA2059594A1 (en) | 1993-04-04 |
CA2059594C CA2059594C (en) | 1995-06-27 |
Family
ID=25088999
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA 2059594 Expired - Lifetime CA2059594C (en) | 1991-10-03 | 1992-01-17 | Pipe coupling |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA2059594C (en) |
-
1992
- 1992-01-17 CA CA 2059594 patent/CA2059594C/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
CA2059594C (en) | 1995-06-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKEX | Expiry |