Screw expander with variable volume controlled by the pressure ratio, and plant for recovering electrical energy from heat with a screw expander
US-12055042-B2 · Aug 6, 2024 · US
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using sliding valves
using sliding 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 | F01C20/12 |
| Official title | using sliding valves |
| Display label | using sliding valves |
| Total patents | 3 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity appears stable based on the most recent years.
| Year | Patents |
|---|---|
| 2018 | 1 |
| 2021 | 1 |
| 2024 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Screw expander, and plant for recovering electrical energy from heat with a screw expander
US-2021388834-A1 · Dec 16, 2021 · US
Screw compressor having a volume ratio being adjusted by end faces extending along from a low-pressure side end wall to discharge edges of a slider
US-10030653-B2 · Jul 24, 2018 · US