F15B 2211/31505
Being connected to a pressure source and a return line
Official title: being connected to a pressure source and a return line
F15B2211/31505 (Being connected to a pressure source and a return line) appears on 33 US grants and 24 published applications in this corpus.
Search patents in F15B- Granted patents
- 33
- Published applications
- 24
- Assignees
- 23
- Inventors
- 68
- Latest grant
- 18 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 2 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 1 | 1 |
| 2008 | 1 | 1 |
| 2009 | 1 | 2 |
| 2010 | 0 | 2 |
| 2011 | 1 | 1 |
| 2012 | 1 | 0 |
| 2013 | 0 | 1 |
| 2014 | 2 | 2 |
| 2015 | 1 | 4 |
| 2016 | 1 | 0 |
| 2017 | 4 | 0 |
| 2018 | 1 | 1 |
| 2019 | 1 | 0 |
| 2020 | 0 | 0 |
| 2021 | 1 | 3 |
| 2022 | 2 | 1 |
| 2023 | 1 | 0 |
| 2024 | 1 | 2 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Fluid circuit for intermittent air discharge18 Nov 2025US 12,473,932 B2SMC Corporation
- Method for controlling a hydraulic system of a working machine4 Jun 2024US 12,000,112 B2Volvo Construction Equipment AB
- Rotating head with bypass circuit7 Mar 2023US 11,598,172 B2The Sydco System, Inc.
- Hydraulic system for a working machine4 Oct 2022US 11,459,732 B2Volvo Construction Equipment AB
- Pneumatic control device and process control device equipped therewith8 Feb 2022US 11,242,874 B2Festo AG & Co.
- Fluid circuit for intermittent air discharge11 Apr 2024US 2024/0117822 A1SMC Corporation
- Hydraulically-powered vacuum system7 Mar 2024US 2024/0076843 A1
- Rotating head with bypass circuit28 Jul 2022US 2022/0235800 A1The Sydco System, Inc.
- A hydraulic system for a working machine9 Dec 2021US 2021/0381200 A1Volvo Constructrion Equipment AB
- Method for controlling a hydraulic system of a working machine2 Dec 2021US 2021/0372087 A1Volvo Construction Equipment AB
Most cited
By later US patents
- Multi-operational valve24US 9,016,317 B2Milwaukee Electric Tool Corporation · 2015
- Three speed circuit for hydraulic tool19US 5,836,400 A1998
- Pressure compensation valve unit and pressure oil supply system utilizing same16US 5,813,309 AKomatsu Ltd. · 1998
- Electrically controlled hydraulic valve calibration method and system13US 7,997,117 B2Caterpillar Inc. · 2011
- Multi-operational valve11US 9,669,533 B2Milwaukee Electric Tool Corporation · 2017