Full-metal anti-high temperature cycloid downhole motor
US-2022389819-A1 · Dec 8, 2022 · US
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of internal-axis type
of internal-axis type · 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 | F01C1/04 |
| Official title | of internal-axis type |
| Display label | of internal-axis type |
| Total patents | 5 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity appears to be declining based on the most recent years.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 2 |
| 2022 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Fluid device with roll pockets alternatingly pressurized at different pressures
US-9341063-B2 · May 17, 2016 · US
Nutating fluid-mechanical energy converter
US-9309862-B2 · Apr 12, 2016 · US
Desynchronized coupling of a hydraulic machine
US-9188004-B2 · Nov 17, 2015 · US
Nutating fluid-mechanical energy converter
US-2015211481-A1 · Jul 30, 2015 · US