Rotary compressor with selective oil communication
US-12146493-B2 · Nov 19, 2024 · US
with vanes hinged to the inner member and reciprocating with respect to the outer member
with vanes hinged to the inner member and reciprocating with respect to the outer member · 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 | F04C18/324 |
| Official title | with vanes hinged to the inner member and reciprocating with respect to the outer member |
| Display label | with vanes hinged to the inner member and reciprocating with respect to the outer member |
| Total patents | 34 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2017 | 1 |
| 2018 | 1 |
| 2020 | 7 |
| 2021 | 6 |
| 2022 | 9 |
| 2023 | 3 |
| 2024 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for determining a discharge pressure of a rolling piston compressor
US-12098722-B2 · Sep 24, 2024 · US
Rotary compressor with vane coupled to rolling piston
US-RE49937-E · Apr 23, 2024 · US
Rotary vane compressor with residual refrigerant removal
US-11913456-B2 · Feb 27, 2024 · US
Method for determining a discharge pressure of a rolling piston compressor
US-2023383741-A1 · Nov 30, 2023 · US
Rotary compressor
US-11655817-B2 · May 23, 2023 · US
Rotary compressor having a combined vane-roller structure including a ferrosoferric oxide film on a surface of a coupling groove of the roller
US-11555404-B2 · Jan 17, 2023 · US
Rotary compressor
US-2022412358-A1 · Dec 29, 2022 · US
Rotary compressor with a vane discharge-sided groove and a vane suction-sided groove
US-11493044-B2 · Nov 8, 2022 · US
Rotary compressor with selective oil communication
US-2022349405-A1 · Nov 3, 2022 · US
Rotary compressor with selective oil communication
US-11486398-B2 · Nov 1, 2022 · US
Rotary compressor
US-11466686-B2 · Oct 11, 2022 · US
Rotary compressor having roller with dimple portion
US-11441566-B2 · Sep 13, 2022 · US
Rotary compressor with wear avoiding portion
US-11428223-B2 · Aug 30, 2022 · US
Rotary compressor with roller oil groove
US-11313367-B2 · Apr 26, 2022 · US
Rotary compressor with vane slot disposed at predetermined tilting angle
US-11225970-B2 · Jan 18, 2022 · US
Rotary compressor
US-2021381511-A1 · Dec 9, 2021 · US
Rotary compressor
US-2021215397-A1 · Jul 15, 2021 · US
Rotary compressor having a rolling piston with coupling groove
US-11060521-B2 · Jul 13, 2021 · US
Rotary comppresor
US-2021025389-A1 · Jan 28, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04C18/324?
- CPC F04C18/324 is the Cooperative Patent Classification code for “with vanes hinged to the inner member and reciprocating with respect to the outer member.”
- How many patents are filed under CPC F04C18/324 (with vanes hinged to the inner member and reciprocating with respect to the outer member)?
- Our database includes 34 publications tagged with this CPC code.
- Is patent activity under CPC F04C18/324 growing?
- Publication counts under this code: 3 in 2023 vs 4 in 2024 (latest complete years).