F15B 13/0418
Load sensing elements sliding within a hollow main valve spool
Official title: {Load sensing elements sliding within a hollow main valve spool}
F15B13/0418 (Load sensing elements sliding within a hollow main valve spool) appears on 29 US grants and 16 published applications in this corpus.
Search patents in F15B- Granted patents
- 29
- Published applications
- 16
- Assignees
- 18
- Inventors
- 39
- Latest grant
- 5 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 2 |
| 2005 | 1 | 0 |
| 2006 | 1 | 1 |
| 2007 | 1 | 0 |
| 2008 | 0 | 1 |
| 2009 | 1 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 1 | 1 |
| 2014 | 0 | 0 |
| 2015 | 1 | 1 |
| 2016 | 0 | 0 |
| 2017 | 2 | 2 |
| 2018 | 0 | 0 |
| 2019 | 1 | 2 |
| 2020 | 0 | 1 |
| 2021 | 1 | 1 |
| 2022 | 1 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
| 2025 | 1 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Hydraulic distributor with compensation device for directional valves5 May 2026US 12,618,422 B2Walvoil S.P.A.
- Valve with an adjustable flow sharing pressure compensator14 Oct 2025US 12,442,396 B2Parker-Hannifin Corporation
- Regulating device for pump pressure and pump volumetric flow rate, having concentric control slide valves7 Jun 2022US 11,353,120 B2Robert Bosch GmbH
- Control valve compensation system27 Apr 2021US 10,989,232 B2Rost Innovation LLC
- Control valve compensation system20 Aug 2019US 10,385,884 B2Rost Innovation LLC
- Hydraulic distributor with compensation device for directional valves10 Apr 2025US 2025/0116282 A1Walvoil S.P.A.
- Valve with an Adjustable Flow Sharing Pressure Compensator28 Mar 2024US 2024/0102495 A1Parker-Hannifin Corporation
- Control Valve Compensation System5 Aug 2021US 2021/0239140 A1Rost Innovation LLC
- Regulating Device for Pump Pressure and Pump Volumetric Flow Rate, having Concentric Control Slide Valves2 Apr 2020US 2020/0103037 A1Robert Bosch GmbH
- Control Valve Compensation System5 Dec 2019US 2019/0368518 A1Rost Innovation LLC
Most cited
By later US patents
- Load sensing proportional pressure control valve24US 5,577,534 AApplied Power Inc. · 1996
- Hydraulic circuit system for civil engineering and construction machines18US 5,446,979 AHitachi Construction Machinery Co., Ltd. · 1995
- Method and control device for controlling a hydraulic consumer17US 6,516,614 B1Bosch Rexroth AG · 2003
- Compensated work port fluid valves15US 4,187,877 ACommercial Shearing, Inc. · 1980
- Hydrostatic drive systems12US 4,617,798 ALinde Aktiengesellschaft · 1986