F16C 33/80
Labyrinth sealings
Official title: Labyrinth sealings {(F16C33/761 takes precedence)}
F16C33/80 (Labyrinth sealings) appears on 741 US grants and 662 published applications in this corpus.
Search patents in F16C- Granted patents
- 741
- Published applications
- 662
- Assignees
- 294
- Inventors
- 1,385
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 5 | 0 |
| 1978 | 6 | 0 |
| 1979 | 3 | 0 |
| 1980 | 5 | 0 |
| 1981 | 4 | 0 |
| 1982 | 8 | 0 |
| 1983 | 10 | 0 |
| 1984 | 6 | 0 |
| 1985 | 3 | 0 |
| 1986 | 6 | 0 |
| 1987 | 7 | 0 |
| 1988 | 7 | 0 |
| 1989 | 10 | 0 |
| 1990 | 9 | 0 |
| 1991 | 15 | 0 |
| 1992 | 4 | 0 |
| 1993 | 8 | 0 |
| 1994 | 7 | 0 |
| 1995 | 12 | 0 |
| 1996 | 9 | 0 |
| 1997 | 14 | 0 |
| 1998 | 8 | 0 |
| 1999 | 15 | 0 |
| 2000 | 11 | 0 |
| 2001 | 17 | 3 |
| 2002 | 11 | 11 |
| 2003 | 11 | 16 |
| 2004 | 12 | 14 |
| 2005 | 7 | 13 |
| 2006 | 7 | 11 |
| 2007 | 7 | 13 |
| 2008 | 6 | 27 |
| 2009 | 8 | 18 |
| 2010 | 13 | 24 |
| 2011 | 15 | 29 |
| 2012 | 17 | 18 |
| 2013 | 23 | 24 |
| 2014 | 24 | 21 |
| 2015 | 22 | 37 |
| 2016 | 33 | 49 |
| 2017 | 32 | 25 |
| 2018 | 25 | 43 |
| 2019 | 42 | 36 |
| 2020 | 40 | 36 |
| 2021 | 31 | 37 |
| 2022 | 24 | 35 |
| 2023 | 25 | 32 |
| 2024 | 43 | 40 |
| 2025 | 28 | 30 |
| 2026 | 23 | 20 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Seal assembly for a wheel bearing, comprising a diagonal contact surface, and wheel bearing8 Sep 2026US 12,729,719 B2Schaeffler Technologies AG & Co. KG
- Sealing device for bearing unit8 Sep 2026US 12,729,720 B2Aktiebolaget Skf
- Bearing unit1 Sep 2026US 12,723,625 B2Aktiebolaget Skf
- Lubricant leakage control mechanism and gear mechanism18 Aug 2026US 12,710,096 B2Nabtesco Corporation
- Support assembly for moveable shafts4 Aug 2026US 12,698,803 B2Aktiebolaget Skf
- Wheel bearing assembly24 Sep 2026US 2026/0285086 A1Volkswagen Aktiengesellschaft
- Labyrinth sealing shield for a rolling bearing and associated rolling bearing10 Sep 2026US 2026/0266337 A1
- Vehicle knuckle assembly with bearing assembly bump guard6 Aug 2026US 2026/0225400 A1ILJIN USA Corporation
- Wheel bearing unit, in particular for a motor vehicle16 Jul 2026US 2026/0200265 A1Schaeffler Technologies AG & Co. KG
- Bearing unit and gearing2 Jul 2026US 2026/0185563 A1Mitsubishi Electric Corporation
Most cited
By later US patents
- Sealing rings70US 4,022,479 A1977
- Idler roller bearing and seal67US 5,028,054 AFMC Corporation · 1991
- Labyrinth bearing protector seal63US 4,743,034 ADurametallic Corporation · 1988
- Sealing rings with complimentary ring members56US 4,706,968 A1987
- Hydrodynamic bearings having beam mounted bearing pads and sealed bearing assemblies including the same54US 5,054,938 A1991