F15B 2211/71
Multiple output members
Official title: Multiple output members, e.g. multiple hydraulic motors or cylinders
F15B2211/71 (Multiple output members) appears on 1,560 US grants and 1,242 published applications in this corpus.
Search patents in F15B- Granted patents
- 1,560
- Published applications
- 1,242
- Assignees
- 553
- Inventors
- 2,526
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 44 | 0 |
| 1977 | 21 | 0 |
| 1978 | 22 | 0 |
| 1979 | 21 | 0 |
| 1980 | 21 | 0 |
| 1981 | 12 | 0 |
| 1982 | 10 | 0 |
| 1983 | 8 | 0 |
| 1984 | 10 | 0 |
| 1985 | 13 | 0 |
| 1986 | 11 | 0 |
| 1987 | 13 | 0 |
| 1988 | 13 | 0 |
| 1989 | 10 | 0 |
| 1990 | 6 | 0 |
| 1991 | 15 | 0 |
| 1992 | 16 | 0 |
| 1993 | 15 | 0 |
| 1994 | 20 | 0 |
| 1995 | 13 | 0 |
| 1996 | 17 | 0 |
| 1997 | 16 | 0 |
| 1998 | 25 | 0 |
| 1999 | 26 | 0 |
| 2000 | 25 | 0 |
| 2001 | 42 | 7 |
| 2002 | 31 | 25 |
| 2003 | 30 | 44 |
| 2004 | 33 | 33 |
| 2005 | 32 | 28 |
| 2006 | 22 | 28 |
| 2007 | 19 | 37 |
| 2008 | 21 | 32 |
| 2009 | 28 | 34 |
| 2010 | 17 | 16 |
| 2011 | 28 | 22 |
| 2012 | 13 | 26 |
| 2013 | 25 | 46 |
| 2014 | 21 | 46 |
| 2015 | 36 | 67 |
| 2016 | 42 | 63 |
| 2017 | 62 | 70 |
| 2018 | 59 | 93 |
| 2019 | 86 | 107 |
| 2020 | 107 | 69 |
| 2021 | 92 | 89 |
| 2022 | 71 | 71 |
| 2023 | 62 | 47 |
| 2024 | 66 | 61 |
| 2025 | 54 | 51 |
| 2026 | 38 | 30 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F15B 2211/7142The output members being arranged in multiple groupsIndexing code489
- F15B 2211/7114With direct connection between the chambers of different actuatorsIndexing code309
- F15B 2211/7135Combinations of output members of different typesIndexing code291
- F15B 2211/7107The output members being mechanically linkedIndexing code175
Recent patents
- Hybrid electro-hydraulic load sensing system and control method thereof15 Sep 2026US 12,736,067 B2Chongqing University
- Hydraulic system for work machine, and work machine15 Sep 2026US RE51,031 E1Kubota Corporation
- Actuator assembly for a heavy construction machine25 Aug 2026US 12,716,429 B2Wipro Enterprises Pvt Ltd
- Hydraulic distributor with pressure compensator for directional valves18 Aug 2026US 12,710,062 B2Walvoil S.P.A.
- Hydraulic drive apparatus21 Jul 2026US 12,687,182 B2Kawasaki Jukogyo Kabushiki Kaisha
- Hydraulic system management method for machine control13 Aug 2026US 2026/0234895 A1Deere & Company
- Method Of Adjusting Relief Pressure Of Relief Valve For Swing Motor13 Aug 2026US 2026/0234899 A1Caterpillar SARL
- Work Machine13 Aug 2026US 2026/0234907 A1Hitachi Construction Machinery Co., Ltd.
- Mobile machine with improved electric powered actuator system6 Aug 2026US 2026/0226710 A1Moog Inc.
- Work machine6 Aug 2026US 2026/0226927 A1Komatsu Ltd.
Most cited
By later US patents
- Automotive hydraulic system and method for driving a hydraulic accessory in parallel with a power steering unit108US 6,073,536 A2000
- Hydraulic control system for downhole tools100US 6,536,530 B2Halliburton Energy Services.Inc. · 2003
- Cartridge valve having solenoid bypass and integral relief valve94US 5,992,450 AEaton Corporation · 1999
- Hydraulic system with cross function regeneration90US 6,502,393 B1HUSCO International, Inc. · 2003
- Hydraulic circuit for synchronized horizontal extension of cylinders86US 7,926,410 B2JR Automation Technologies, LLC · 2011