F15B 21/02
Servomotor systems with program control derived from a store or timing device
Official title: Servomotor systems with program control derived from a store or timing device; Control devices therefor
F15B21/02 (Servomotor systems with program control derived from a store or timing device) appears on 85 US grants and 75 published applications in this corpus.
Search patents in F15B- Granted patents
- 85
- Published applications
- 75
- Assignees
- 71
- Inventors
- 208
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 5 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 4 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 1 | 2 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 1 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 1 | 1 |
| 2015 | 0 | 4 |
| 2016 | 0 | 2 |
| 2017 | 3 | 5 |
| 2018 | 4 | 10 |
| 2019 | 8 | 8 |
| 2020 | 13 | 10 |
| 2021 | 9 | 6 |
| 2022 | 5 | 6 |
| 2023 | 4 | 9 |
| 2024 | 6 | 3 |
| 2025 | 6 | 4 |
| 2026 | 4 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Speed control for hydraulic system of a refuse vehicle11 Aug 2026US 12,703,315 B2Oshkosh Corporation
- Hydraulic system for a refuse vehicle2 Jun 2026US 12,643,496 B2Oshkosh Corporation
- Route planning based control of a refuse vehicle hydraulic system28 Apr 2026US 12,612,000 B2Oshkosh Corporation
- Calibration system in hydraulic system3 Feb 2026US 12,540,634 B2Caterpillar SARL
- Cycle time control for a refuse vehicle hydraulic system9 Dec 2025US 12,491,832 B2Oshkosh Corporation
- Hydraulic system for a refuse vehicle1 Oct 2026US 2026/0296342 A1Oshkosh Corporation
- Route planning based control of a refuse vehicle hydraulic system3 Sep 2026US 2026/0257638 A1Oshkosh Corporation
- Cycle time control for a refuse vehicle hydraulic system5 Mar 2026US 2026/0061953 A1Oshkosh Corporation
- Adaptive and automatic switching between pneumatic and hydraulic modes19 Feb 2026US 2026/0049623 A1Illinois Tool Works Inc.
- Method for the operation of a pneumatic system and pneumatic system25 Dec 2025US 2025/0389288 A1Festo AG & Co.
Most cited
By later US patents
- Electro-pneumatic control device48US 5,458,048 AFesto AG & Co. · 1995
- Timer controlled valve38US 4,090,532 ACla-Val Co. · 1978
- System for conserving compressed air supply15US 3,943,972 ARoss Operating Valve Company · 1976
- Time-control circuit for pneumatically operable devices14US 5,169,480 ASignode Corporation · 1992
- Hydraulic system control method using a differential pressure compensated flow coefficient14US 7,406,982 B2HUSCO International, Inc. · 2008