F16L 27/04
With partly-spherical engaging surfaces
Official title: with partly-spherical engaging surfaces
F16L27/04 (With partly-spherical engaging surfaces) appears on 491 US grants and 320 published applications in this corpus.
Search patents in F16L- Granted patents
- 491
- Published applications
- 320
- Assignees
- 321
- Inventors
- 827
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 13 | 0 |
| 1977 | 8 | 0 |
| 1978 | 9 | 0 |
| 1979 | 12 | 0 |
| 1980 | 9 | 0 |
| 1981 | 9 | 0 |
| 1982 | 9 | 0 |
| 1983 | 7 | 0 |
| 1984 | 12 | 0 |
| 1985 | 10 | 0 |
| 1986 | 9 | 0 |
| 1987 | 10 | 0 |
| 1988 | 8 | 0 |
| 1989 | 9 | 0 |
| 1990 | 12 | 0 |
| 1991 | 6 | 0 |
| 1992 | 9 | 0 |
| 1993 | 7 | 0 |
| 1994 | 11 | 0 |
| 1995 | 4 | 0 |
| 1996 | 3 | 0 |
| 1997 | 8 | 0 |
| 1998 | 7 | 0 |
| 1999 | 12 | 0 |
| 2000 | 13 | 0 |
| 2001 | 15 | 1 |
| 2002 | 11 | 5 |
| 2003 | 5 | 7 |
| 2004 | 7 | 14 |
| 2005 | 8 | 11 |
| 2006 | 5 | 9 |
| 2007 | 5 | 5 |
| 2008 | 4 | 14 |
| 2009 | 3 | 4 |
| 2010 | 5 | 18 |
| 2011 | 8 | 12 |
| 2012 | 9 | 6 |
| 2013 | 9 | 16 |
| 2014 | 10 | 15 |
| 2015 | 12 | 15 |
| 2016 | 8 | 17 |
| 2017 | 8 | 17 |
| 2018 | 9 | 16 |
| 2019 | 16 | 16 |
| 2020 | 20 | 21 |
| 2021 | 15 | 12 |
| 2022 | 10 | 10 |
| 2023 | 20 | 14 |
| 2024 | 13 | 20 |
| 2025 | 18 | 13 |
| 2026 | 12 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F16L 27/06With special sealing means between the engaging surfaces202
- F16L 27/053Held in place by bolts passing through flanges94
- F16L 27/047Held in place by a screwed member having an internal spherical surface70
- F16L 27/042Comprising two pipes normally at right angles to each other10
- F16L 27/044Specially adapted for tubing between vehicles7
Recent patents
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Most cited
By later US patents
- Articulated ball connector for use with pipeline1,368US 4,180,285 A1979
- Offset coupling for electrical conduit363US 4,946,202 A1990
- Flexible shower arm assembly219US 5,865,378 ATeledyne Industries, Inc. · 1999
- Flexible shower arm assembly183US 6,164,569 ATeledyne Industries, Inc. · 2000
- Apparatus for rigidly interconnecting misaligned pipe ends133US 4,045,054 AHydroTech International, Inc. · 1977