F15B 2211/20553
With pilot circuit
Official title: with pilot circuit, e.g. for controlling a swash plate
F15B2211/20553 (With pilot circuit) appears on 610 US grants and 379 published applications in this corpus.
Search patents in F15B- Granted patents
- 610
- Published applications
- 379
- Assignees
- 178
- Inventors
- 942
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 15 | 0 |
| 1977 | 13 | 0 |
| 1978 | 16 | 0 |
| 1979 | 11 | 0 |
| 1980 | 9 | 0 |
| 1981 | 7 | 0 |
| 1982 | 8 | 0 |
| 1983 | 5 | 0 |
| 1984 | 7 | 0 |
| 1985 | 5 | 0 |
| 1986 | 6 | 0 |
| 1987 | 8 | 0 |
| 1988 | 6 | 0 |
| 1989 | 5 | 0 |
| 1990 | 5 | 0 |
| 1991 | 11 | 0 |
| 1992 | 16 | 0 |
| 1993 | 12 | 0 |
| 1994 | 15 | 0 |
| 1995 | 9 | 0 |
| 1996 | 11 | 0 |
| 1997 | 9 | 0 |
| 1998 | 15 | 0 |
| 1999 | 15 | 0 |
| 2000 | 16 | 0 |
| 2001 | 19 | 1 |
| 2002 | 13 | 9 |
| 2003 | 11 | 9 |
| 2004 | 4 | 8 |
| 2005 | 5 | 9 |
| 2006 | 7 | 16 |
| 2007 | 9 | 10 |
| 2008 | 8 | 17 |
| 2009 | 9 | 18 |
| 2010 | 8 | 16 |
| 2011 | 8 | 13 |
| 2012 | 6 | 15 |
| 2013 | 19 | 18 |
| 2014 | 22 | 9 |
| 2015 | 8 | 19 |
| 2016 | 13 | 16 |
| 2017 | 17 | 22 |
| 2018 | 19 | 20 |
| 2019 | 25 | 15 |
| 2020 | 16 | 17 |
| 2021 | 22 | 20 |
| 2022 | 26 | 15 |
| 2023 | 17 | 17 |
| 2024 | 11 | 23 |
| 2025 | 21 | 19 |
| 2026 | 12 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Electrohydraulic control device and adjustable hydraulic pump system6 Oct 2026US 12,753,781 B2HAWE Hydraulik SE
- Solenoid concept for pump control of a variable displacement piston pump29 Sep 2026US 12,747,727 B2Hamilton Sundstrand Corporation
- Hybrid electro-hydraulic load sensing system and control method thereof15 Sep 2026US 12,736,067 B2Chongqing University
- Volume follow supply9 Jun 2026US 12,650,135 B2Hydac Fluidtechnik GmbH
- Working machine and control method therefor31 Mar 2026US 12,590,596 B2Kubota Corporation
- System for operating clamp axis of an injection molding machine and method thereof13 Aug 2026US 2026/0234909 A1
- System and Method for Controlling a Hydraulic Supply System on a Mobile Machine18 Jun 2026US 2026/0168520 A1AGCO International GmbH
- Bulldozing hydraulic system with bulldozing blade floating function and excavator11 Jun 2026US 2026/0160045 A1Xuzhou XCMG Excavator Machinery Co., Ltd.
- Refuse vehicle control systems and methods7 May 2026US 2026/0126059 A1Oshkosh Corporation
- Working machine26 Mar 2026US 2026/0085495 A1Kubota Corporation
Most cited
By later US patents
- Hydraulic system providing down force on a work implement109US 6,460,623 B1Caterpillar Inc. · 2002
- Control system for load-sensing hydraulic drive circuit65US 4,967,557 AHitachi Construction Machinery Co., Ltd. · 1990
- Multiple consumer hydraulic mechanisms60US 4,617,854 ALinde Aktiengesellschaft · 1986
- Dual-pump, flow-isolated hydraulic circuit for an agricultural tractor60US 5,918,558 ACase Corporation · 1999
- Control system for automatically controlling actuators of an excavator57US 5,361,211 ASamsung Heavy Industries Co., Ltd. · 1994