F16F 9/34
Special valve constructions
Official title: Special valve constructions ({F16F9/44, F16F9/50 take precedence; filtering details F16F9/3285} ; valves in general F16K); Shape or construction of throttling passages
F16F9/34 (Special valve constructions) appears on 1,501 US grants and 1,475 published applications in this corpus.
Search patents in F16F- Granted patents
- 1,501
- Published applications
- 1,475
- Assignees
- 482
- Inventors
- 2,028
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 10 | 0 |
| 1977 | 10 | 0 |
| 1978 | 20 | 0 |
| 1979 | 6 | 0 |
| 1980 | 6 | 0 |
| 1981 | 4 | 0 |
| 1982 | 9 | 0 |
| 1983 | 7 | 0 |
| 1984 | 18 | 0 |
| 1985 | 7 | 0 |
| 1986 | 9 | 0 |
| 1987 | 10 | 0 |
| 1988 | 12 | 0 |
| 1989 | 17 | 0 |
| 1990 | 12 | 0 |
| 1991 | 10 | 0 |
| 1992 | 12 | 0 |
| 1993 | 5 | 0 |
| 1994 | 13 | 0 |
| 1995 | 11 | 0 |
| 1996 | 17 | 0 |
| 1997 | 18 | 0 |
| 1998 | 24 | 0 |
| 1999 | 31 | 0 |
| 2000 | 27 | 0 |
| 2001 | 36 | 13 |
| 2002 | 39 | 26 |
| 2003 | 24 | 22 |
| 2004 | 13 | 28 |
| 2005 | 21 | 39 |
| 2006 | 18 | 27 |
| 2007 | 17 | 29 |
| 2008 | 16 | 27 |
| 2009 | 12 | 34 |
| 2010 | 18 | 25 |
| 2011 | 13 | 33 |
| 2012 | 22 | 39 |
| 2013 | 31 | 53 |
| 2014 | 41 | 62 |
| 2015 | 68 | 78 |
| 2016 | 63 | 90 |
| 2017 | 67 | 87 |
| 2018 | 75 | 97 |
| 2019 | 84 | 95 |
| 2020 | 90 | 84 |
| 2021 | 78 | 93 |
| 2022 | 62 | 85 |
| 2023 | 82 | 83 |
| 2024 | 75 | 104 |
| 2025 | 58 | 68 |
| 2026 | 53 | 54 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F16F 9/348Throttling passages in the form of annular discs or other plate-like elements660
- F16F 9/3405Throttling passages in or on piston body212
- F16F 9/346Throttling passages in the form of slots arranged in cylinder walls143
- F16F 9/342Throttling passages operating with metering pins89
- F16F 9/3415Characterised by comprising plastics, elastomeric or porous elements67
- F16F 9/341Comprising noise-reducing or like features33
- F16F 9/344Vortex flow passages15
Recent patents
- Metering needle for oleo-pneumatic-type shock absorber29 Sep 2026US 12,747,768 B2Safran Landing Systems
- Controlled damper with proportional valve and cross-flow bypass sleeve29 Sep 2026US 12,747,769 B2Beijingwest Industries Co., Ltd.
- Vibration dampers for a vehicle22 Sep 2026US 12,742,484 B2thyssenkrupp AG
- Canned valve seal22 Sep 2026US 12,742,485 B2Fox Factory, Inc.
- Shock absorber22 Sep 2026US 12,742,486 B2Hl Mando Corporation
- Vibration damper, motor vehicle and method for filling8 Oct 2026US 2026/0309202 A1thyssenkrupp AG
- Integrated Semi Active Valve Seat Plate24 Sep 2026US 2026/0287038 A1
- Shock absorber and damping force generation mechanism17 Sep 2026US 2026/0276054 A1Hitachi Astemo, Ltd.
- Shock absorber10 Sep 2026US 2026/0266350 A1Kyb Motorcycle Suspension Co., Ltd.
- Linear damper and steering device27 Aug 2026US 2026/0249907 A1Somic Management Holdings Inc.
Most cited
By later US patents
- Bicycle fork cartridge assembly255US 6,592,136 B2Fox Factory, Inc. · 2003
- Damping adjuster for shock absorber218US 6,360,857 B1Fox Factory, Inc. · 2002
- Electronic suspension system for a wheeled vehicle199US 5,971,116 ACannondale Corporation · 1999
- Position-sensitive shock absorber199US 6,296,092 B1Fox Factory, Inc. · 2001
- Inertia valve shock absorber199US 7,128,192 B2Fox Factory, Inc. · 2006