Hydraulic motor disc valve optimization
US-10982669-B2 · Apr 20, 2021 · US
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using rotating valves
using rotating valves · Cooperative Patent Classification (CPC)
Engines, pumps, lighting, heating, and mechanical systems.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | F04C14/14 |
| Official title | using rotating valves |
| Display label | using rotating valves |
| Total patents | 20 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 1 |
| 2017 | 3 |
| 2018 | 4 |
| 2019 | 5 |
| 2020 | 1 |
| 2021 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Direct port commutator and manifold assembly
US-10947848-B2 · Mar 16, 2021 · US
Variable Displacement Pump
US-2020080555-A1 · Mar 12, 2020 · US
Driving power transmission device
US-10302152-B2 · May 28, 2019 · US
Oscillating pump systems for use on aircraft
US-10301010-B2 · May 28, 2019 · US
Hydraulic motor disc valve optimization
US-2019136856-A1 · May 9, 2019 · US
Eccentrically piloted hydraulic commutator
US-10215154-B2 · Feb 26, 2019 · US
Displacement pump and a control ring for a displacement pump
US-10167866-B2 · Jan 1, 2019 · US
Direct port commutator and manifold assembly
US-2018371911-A1 · Dec 27, 2018 · US
Driving power transmission device
US-2018238403-A1 · Aug 23, 2018 · US
Pump apparatus with switching valve and driving power transmission device
US-9995348-B2 · Jun 12, 2018 · US
Oscillating Pump Systems for Use on Aircraft
US-2018111679-A1 · Apr 26, 2018 · US
Variable displacement oil pump
US-9835153-B2 · Dec 5, 2017 · US
Eccentrically piloted hydraulic commutator
US-2017159439-A1 · Jun 8, 2017 · US
Gerotor hydraulic device with adjustable output
US-9644481-B2 · May 9, 2017 · US
Gerotor pump, a gerotor motor and a gerotor transmission system
US-9377033-B2 · Jun 28, 2016 · US
Variable displacement oil pump
US-2015285246-A1 · Oct 8, 2015 · US
Control ring for a hydrostatical device
US-2015198156-A1 · Jul 16, 2015 · US
Displacement pump and a control ring for a displacement pump
US-2015198158-A1 · Jul 16, 2015 · US
Pump apparatus with switching valve and driving power transmission device
US-2015114790-A1 · Apr 30, 2015 · US