F16D 48/066
Control of fluid pressure
Official title: {Control of fluid pressure, e.g. using an accumulator (F16D48/062, F16D48/068 take precedence)}
F16D48/066 (Control of fluid pressure) appears on 859 US grants and 595 published applications in this corpus.
Search patents in F16D- Granted patents
- 859
- Published applications
- 595
- Assignees
- 258
- Inventors
- 1,657
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 4 | 0 |
| 1978 | 5 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 3 | 0 |
| 1983 | 4 | 0 |
| 1984 | 11 | 0 |
| 1985 | 14 | 0 |
| 1986 | 13 | 0 |
| 1987 | 14 | 0 |
| 1988 | 12 | 0 |
| 1989 | 12 | 0 |
| 1990 | 9 | 0 |
| 1991 | 25 | 0 |
| 1992 | 10 | 0 |
| 1993 | 6 | 0 |
| 1994 | 18 | 0 |
| 1995 | 10 | 0 |
| 1996 | 9 | 0 |
| 1997 | 14 | 0 |
| 1998 | 24 | 0 |
| 1999 | 20 | 0 |
| 2000 | 30 | 0 |
| 2001 | 20 | 6 |
| 2002 | 15 | 18 |
| 2003 | 22 | 19 |
| 2004 | 18 | 18 |
| 2005 | 12 | 23 |
| 2006 | 18 | 18 |
| 2007 | 20 | 14 |
| 2008 | 17 | 30 |
| 2009 | 8 | 44 |
| 2010 | 13 | 29 |
| 2011 | 24 | 22 |
| 2012 | 33 | 25 |
| 2013 | 34 | 33 |
| 2014 | 39 | 40 |
| 2015 | 33 | 23 |
| 2016 | 28 | 38 |
| 2017 | 29 | 40 |
| 2018 | 34 | 28 |
| 2019 | 30 | 19 |
| 2020 | 31 | 38 |
| 2021 | 34 | 20 |
| 2022 | 23 | 15 |
| 2023 | 20 | 16 |
| 2024 | 18 | 9 |
| 2025 | 9 | 3 |
| 2026 | 5 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Rear wheel drive clutch control system of work vehicle15 Sep 2026US 12,734,879 B2Deere & Company
- System and method for calibrating transmission5 May 2026US 12,618,466 B2Dana Belgium N.V.
- Clutch system7 Apr 2026US 12,595,827 B2Isuzu Motors Limited
- Pressure modulating clutch control assembly17 Mar 2026US 12,577,991 B2Caterpillar Inc.
- Method for detecting a safe state of a valve of a hydraulic system17 Feb 2026US 12,552,340 B2Schaeffler Technologies AG & Co. KG
- Control apparatus for vehicle17 Sep 2026US 2026/0276044 A1Toyota Jidosha Kabushiki Kaisha
- High-pressure hydraulic clutch cooling system for work vehicles30 Jul 2026US 2026/0218761 A1Deere & Company
- Rear wheel drive clutch control system of work vehicle25 Jun 2026US 2026/0175678 A1Deere & Company
- Power system coupling of a multi-speed transmission to a prime mover21 May 2026US 2026/0139729 A1Allison Transmission, Inc.
- System and method for calibrating transmission30 Apr 2026US 2026/0117860 A1Dana Belgium N.V.
Most cited
By later US patents
- Hybrid drive apparatus for vehicle148US 6,018,198 AAisin Aw Co., Ltd. · 2000
- Transmission clutch control system and method85US 4,527,678 AFord Motor Company · 1985
- Control unit for an electric oil pump75US 7,909,729 B2Honda Motor Co., Ltd. · 2011
- Automatic clutch control73US 4,646,891 AEaton Corporation · 1987
- Power take-off control system and method63US 7,048,106 B2CNH America LLC · 2006