Systems and methods for modulating pressure wave therapy
US-2025029704-A1 · Jan 23, 2025 · US
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Control devices for adjusting the stroke of the piston or the force or frequency of impact thereof {(control systems adapted for earth drilling E21B44/00)}
Control devices for adjusting the stroke of the piston or the force or frequency of impact thereof {(control systems adapted for earth drilling E21B44/00)} · Cooperative Patent Classification (CPC)
Separating, mixing, shaping, printing, and transporting materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | B25D9/26 |
| Official title | Control devices for adjusting the stroke of the piston or the force or frequency of impact thereof {(control systems adapted for earth drilling E21B44/00)} |
| Display label | Control devices for adjusting the stroke of the piston or the force or frequency of impact thereof {(control systems adapted for earth drilling E21B44/00)} |
| Total patents | 23 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 5 |
| 2017 | 7 |
| 2018 | 2 |
| 2019 | 1 |
| 2020 | 3 |
| 2021 | 2 |
| 2022 | 1 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Apparatus, rock breaking machine and method of monitoring rock breaking machine
US-11391093-B2 · Jul 19, 2022 · US
Apparatus, rock breaking machine and method of monitoring rock breaking machine
US-2021301594-A1 · Sep 30, 2021 · US
Hammer drill
US-11040438-B2 · Jun 22, 2021 · US
Percussion drilling device
US-10828763-B2 · Nov 10, 2020 · US
Hammer drill
US-10603775-B2 · Mar 31, 2020 · US
Hammer drill
US-2020039048-A1 · Feb 6, 2020 · US
Hammer protection system and method
US-10377028-B2 · Aug 13, 2019 · US
Arrangement for controlling automated operation mode
US-9951616-B2 · Apr 24, 2018 · US
Fault detection system for actuator
US-9891135-B2 · Feb 13, 2018 · US
Hydraulic hammer having variable stroke control
US-9840000-B2 · Dec 12, 2017 · US
Hammer protection system and method
US-2017259421-A1 · Sep 14, 2017 · US
Hammer dirll
US-2017246734-A1 · Aug 31, 2017 · US
Percussion piston
US-9737983-B2 · Aug 22, 2017 · US
Hammer drill
US-9669531-B2 · Jun 6, 2017 · US
Adaptive hammer control system
US-2017129088-A1 · May 11, 2017 · US
Arrangement for controlling automated operation mode
US-2017037725-A1 · Feb 9, 2017 · US
Handheld device for driving a stator blade into a blade groove
US-2016339576-A1 · Nov 24, 2016 · US
Hammer drill
US-9498874-B2 · Nov 22, 2016 · US
Hydraulic hammer having variable stroke control
US-2016199969-A1 · Jul 14, 2016 · US