Combination control and check valve assembly for a wet piping system
US-2021138283-A1 · May 13, 2021 · US
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Mechanical Engineering
Mechanical Engineering · 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 | F16K15/181 |
| Official title | — |
| Display label | Mechanical Engineering (mapped technology topic) |
| Total patents | 21 |
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 | 3 |
| 2017 | 2 |
| 2018 | 4 |
| 2019 | 6 |
| 2020 | 3 |
| 2021 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Baffle structure for channel
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Dual check valve fluid circulation system for dishwasher appliances
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Float valve assembly with drag force dependent deactivation
US-10724648-B2 · Jul 28, 2020 · US
Dual check valve fluid circulation system for dishwasher appliances
US-2020132201-A1 · Apr 30, 2020 · US
Rod-mounted buffer to cushion check valve closure
US-10502342-B2 · Dec 10, 2019 · US
Combined isolation valve and check valve with integral flow rate pressure, and/or temperature measurement and field configurability
US-10443880-B2 · Oct 15, 2019 · US
Cushioned Check Valve
US-2019293192-A1 · Sep 26, 2019 · US
Ejector for vaporized fuel gas recirculation devices
US-10280876-B2 · May 7, 2019 · US
Valve for a reciprocating compressor
US-10215295-B2 · Feb 26, 2019 · US
Dry pipe/deluge valve for automatic sprinkler systems
US-10201723-B2 · Feb 12, 2019 · US
Float valve assembly with drag force dependent deactivation
US-2018238460-A1 · Aug 23, 2018 · US
Ejector for vaporized fuel gas recirculation devices
US-2018187633-A1 · Jul 5, 2018 · US
Valve for a reciprocating compressor
US-2018163881-A1 · Jun 14, 2018 · US
Compressor
US-9915255-B2 · Mar 13, 2018 · US
Compressor
US-2017321680-A1 · Nov 9, 2017 · US
Foamable filling device
US-9562642-B2 · Feb 7, 2017 · US
Flapper valve assembly and method of flowing air therethrough
US-9447894-B2 · Sep 20, 2016 · US
Adjustable dishwasher conduit valve system
US-9241604-B2 · Jan 26, 2016 · US
System, method and apparatus for combined ball segment valve and check valve
US-9234598-B2 · Jan 12, 2016 · US