F15B 2211/41563
Being connected to a pressure source and a return line
Official title: being connected to a pressure source and a return line
F15B2211/41563 (Being connected to a pressure source and a return line) appears on 115 US grants and 101 published applications in this corpus.
Search patents in F15B- Granted patents
- 115
- Published applications
- 101
- Assignees
- 83
- Inventors
- 275
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 0 | 0 |
| 2001 | 3 | 0 |
| 2002 | 1 | 1 |
| 2003 | 1 | 2 |
| 2004 | 1 | 0 |
| 2005 | 1 | 3 |
| 2006 | 0 | 3 |
| 2007 | 2 | 1 |
| 2008 | 1 | 1 |
| 2009 | 1 | 2 |
| 2010 | 3 | 2 |
| 2011 | 0 | 1 |
| 2012 | 1 | 1 |
| 2013 | 3 | 2 |
| 2014 | 0 | 6 |
| 2015 | 2 | 7 |
| 2016 | 3 | 0 |
| 2017 | 4 | 5 |
| 2018 | 4 | 4 |
| 2019 | 3 | 9 |
| 2020 | 11 | 8 |
| 2021 | 12 | 5 |
| 2022 | 5 | 13 |
| 2023 | 6 | 3 |
| 2024 | 5 | 8 |
| 2025 | 12 | 13 |
| 2026 | 9 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Temperature regulation system for vehicle hydraulic system25 Aug 2026US 12,716,434 B2Oshkosh Corporation
- Volume follow supply9 Jun 2026US 12,650,135 B2Hydac Fluidtechnik GmbH
- Hydraulic drive device9 Jun 2026US 12,650,136 B2Kawasaki Jukogyo Kabushiki Kaisha
- Hydraulic drive system having a 2×2Q pump unit19 May 2026US 12,631,200 B2HMS-HYBRID MOTION SOLUTIONS GmbH
- Variable relief circuit19 May 2026US 12,631,201 B2HUSCO International, Inc.
- Linear actuator assembly and system21 May 2026US 2026/0139694 A1Project Phoenix, LLC
- Hydraulic drive device18 Dec 2025US 2025/0382980 A1Kawasaki Jukogyo Kabushiki Kaisha
- Volume Follow Supply4 Dec 2025US 2025/0369458 A1Hydac Fluidtechnik GmbH
- Welding machines for pipelines2 Oct 2025US 2025/0303506 A1Ritmo S.P.A.
- Electro-hydraulic actuator and brake device14 Aug 2025US 2025/0256695 A1Ican Company Ltd.
Most cited
By later US patents
- Cartridge valve having solenoid bypass and integral relief valve94US 5,992,450 AEaton Corporation · 1999
- Hydraulic system for supplying hydraulic fluid to a hydraulically operated device alternately at pressures of different value71US 4,142,368 AWelko Industriale S.p.A. · 1979
- Device for cooling components by means of hydraulic fluid from a hydraulic circuit43US 6,672,056 B2Linde Aktiengesellschaft · 2004
- Control device for hydraulically-operated equipment42US 6,308,516 B1Komatsu Ltd. · 2001
- Hydraulic drive system39US 5,680,760 ACaterpillar Inc. · 1997