F15B 15/22
For accelerating or decelerating the stroke
Official title: for accelerating or decelerating the stroke
F15B15/22 (For accelerating or decelerating the stroke) appears on 425 US grants and 318 published applications in this corpus.
Search patents in F15B- Granted patents
- 425
- Published applications
- 318
- Assignees
- 281
- Inventors
- 815
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 10 | 0 |
| 1977 | 8 | 0 |
| 1978 | 5 | 0 |
| 1979 | 4 | 0 |
| 1980 | 6 | 0 |
| 1981 | 6 | 0 |
| 1982 | 3 | 0 |
| 1983 | 4 | 0 |
| 1984 | 4 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 6 | 0 |
| 1988 | 2 | 0 |
| 1989 | 4 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 7 | 0 |
| 1994 | 7 | 0 |
| 1995 | 8 | 0 |
| 1996 | 5 | 0 |
| 1997 | 5 | 0 |
| 1998 | 2 | 0 |
| 1999 | 9 | 0 |
| 2000 | 6 | 0 |
| 2001 | 14 | 5 |
| 2002 | 16 | 14 |
| 2003 | 11 | 8 |
| 2004 | 9 | 9 |
| 2005 | 8 | 7 |
| 2006 | 7 | 14 |
| 2007 | 6 | 9 |
| 2008 | 5 | 5 |
| 2009 | 5 | 5 |
| 2010 | 6 | 10 |
| 2011 | 3 | 7 |
| 2012 | 5 | 11 |
| 2013 | 9 | 13 |
| 2014 | 11 | 11 |
| 2015 | 10 | 17 |
| 2016 | 15 | 19 |
| 2017 | 12 | 15 |
| 2018 | 19 | 26 |
| 2019 | 20 | 14 |
| 2020 | 29 | 21 |
| 2021 | 26 | 23 |
| 2022 | 16 | 20 |
| 2023 | 15 | 9 |
| 2024 | 17 | 11 |
| 2025 | 11 | 4 |
| 2026 | 4 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F15B 15/223Having a piston with a piston extension or piston recess which completely84
- F15B 15/222Having a piston with a piston extension or piston recess which throttles83
- F15B 15/226Having elastic elements72
- F15B 15/224Having a piston which closes off fluid outlets in the cylinder bore50
- F15B 15/225With valve stems operated by contact with the piston end face or43
- F15B 15/227Having an auxiliary cushioning piston within the main piston or the cylinder42
- F15B 15/228Having shock absorbers mounted outside the actuator housing26
- F15B 15/221For accelerating the stroke11
Recent patents
- Electromechanical brake actuator, drive assembly for an electromechanical brake actuator and method for operating an electromechanical brake actuator29 Sep 2026US 12,747,743 B2Robert Bosch GmbH
- Single acting hydraulic cylinder with head end cushioning25 Aug 2026US 12,716,430 B2Wipro Enterprises Pvt Ltd
- Hydraulic cylinder cushion stem with over molded sleeve25 Aug 2026US 12,716,431 B2Caterpillar Inc.
- Actuator, safety device, and flying body14 Apr 2026US 12,600,482 B2
- Safety device and flight vehicle provided with safety device9 Dec 2025US 12,492,005 B2
- Sliding device and fluidic cylinder16 Jul 2026US 2026/0201909 A1Festo AG & Co.
- Cylinder16 Jul 2026US 2026/0201910 A1Festo AG & Co.
- Method for the detection of a position of an actuator element of a pneumatic actuator amid the use of a detection device, as well as a system of a pneumatic actuator and a detection device16 Jul 2026US 2026/0201912 A1Festo AG & Co.
- Electromechanical brake actuator, drive assembly for an electromechanical brake actuator and method for operating an electromechanical brake actuator2 Jul 2026US 2026/0185546 A1Robert Bosch GmbH
- Fluid pressure cylinder26 Mar 2026US 2026/0085705 A1KYB Corporation
Most cited
By later US patents
- Pneumatic cylinder utilizing cushioning sleeves, quick exhaust valves and quick supply valves68US 5,517,898 AKorea Institute of Machinery & Materials · 1996
- Fluid pressure motor45US 4,425,836 AGovernment Innovators, Inc. · 1984
- Pneumatic cylinder motor with end-of-travel cushioning mechanism38US 4,700,611 AShoketsu Kinzoku Kogyo Kabushiki Kaisha · 1987
- Multi-stage extendible and contractible shaft with shock absorption32US 3,973,468 A1976
- Fluid cylinder decelerating means30US 3,974,910 A1976