Gas expansion device and method for expanding gas
US-11156088-B2 · Oct 26, 2021 · US
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Rotary-piston machines or engines (with axes of co-operating members non parallel F01C3/00; with the working-chamber walls at least partly resiliently deformable F01C5/00; with fluid ring or the like F01C7/00; rotary-piston machines or engines in which the working fluid is exclusively displaced by, or exclusively displaces, one or more reciprocating pistons F01B13/00)
Rotary-piston machines or engines (with axes of co-operating members non parallel F01C3/00; with the working-chamber walls at least partly resiliently deformable F01C5/00; with fluid ring or the like F01C7/00; rotary-piston machines or engines in which the working fluid is exclusively displaced by, or exclusively displaces, one or more reciprocating pistons F01B13/00) · 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 | F01C1/00 |
| Official title | Rotary-piston machines or engines (with axes of co-operating members non parallel F01C3/00; with the working-chamber walls at least partly resiliently deformable F01C5/00; with fluid ring or the like F01C7/00; rotary-piston machines or engines in which the working fluid is exclusively displaced by, or exclusively displaces, one or more reciprocating pistons F01B13/00) |
| Display label | Rotary-piston machines or engines (with axes of co-operating members non parallel F01C3/00; with the working-chamber walls at least partly resiliently deformable F01C5/00; with fluid ring or the like F01C7/00; rotary-piston machines or engines in which the working fluid is exclusively displaced by, or exclusively displaces, one or more reciprocating pistons F01B13/00) |
| Total patents | 18 |
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 | 1 |
| 2017 | 4 |
| 2018 | 2 |
| 2019 | 3 |
| 2020 | 3 |
| 2021 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Gas expansion device and method for expanding gas
US-2021207482-A1 · Jul 8, 2021 · US
Internal combustion engine with a rotating piston and uni-directional rolling bear
US-10890110-B2 · Jan 12, 2021 · US
Engine compartment heating assembly
US-10883457-B2 · Jan 5, 2021 · US
Rotary engine with pilot subchambers
US-10801394-B2 · Oct 13, 2020 · US
Compression device
US-10626754-B2 · Apr 21, 2020 · US
Internal combustion engine with a rotating piston and uni-directional rolling bear
US-2020018229-A1 · Jan 16, 2020 · US
Rotary actuator utilizing pneumatically actuated elastomeric structures
US-10378358-B2 · Aug 13, 2019 · US
Composite intake system and method of the rotary engine with variable intake manifold
US-10364778-B2 · Jul 30, 2019 · US
Rotary engine with pilot subchambers
US-2019162108-A1 · May 30, 2019 · US
Engine assembly in compartment
US-2018306147-A1 · Oct 25, 2018 · US
A composite intake system and method of the rotary engine with variable intake manifold
US-2018274501-A1 · Sep 27, 2018 · US
Compression device
US-2017159660-A1 · Jun 8, 2017 · US
Rotary actuator utilizing pneumatically actuated elastomeric structures
US-2017145825-A1 · May 25, 2017 · US
Wankel engine rotor
US-9593580-B2 · Mar 14, 2017 · US
Liquid ring heat engine
US-9540936-B2 · Jan 10, 2017 · US
Internal gear pump having an eccentric inner rotor and outer rotor having teeth non-trochoid tooth profiles and a moving center of the outer rotor
US-9464525-B2 · Oct 11, 2016 · US
Oil seal arrangement for rotary internal combustion engine
US-8985085-B2 · Mar 24, 2015 · US