Fluid pumps with shifters
US-11493030-B2 · Nov 8, 2022 · US
the means being cams, eccentrics or pin-and-slot mechanisms
the means being cams, eccentrics or pin-and-slot mechanisms · 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 | F04B9/04 |
| Official title | the means being cams, eccentrics or pin-and-slot mechanisms |
| Display label | the means being cams, eccentrics or pin-and-slot mechanisms |
| Total patents | 82 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 5 |
| 2017 | 9 |
| 2018 | 11 |
| 2019 | 11 |
| 2020 | 9 |
| 2021 | 8 |
| 2022 | 5 |
| 2023 | 7 |
| 2024 | 5 |
| 2025 | 5 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Device for dispensing a substance comprising a chamber defining a substance inlet, a substance outlet, an air inlet, and an air outlet, a piston located inside the chamber and whose movement causes the exit of both the substance and air to outside of the device
US-11371493-B2 · Jun 28, 2022 · US
Reciprocating-piston machine, compressed air supply system, vehicle and method for producing a reciprocating-piston machine
US-2021404458-A1 · Dec 30, 2021 · US
Double-piston compressor of a compressed air supply device
US-2021293229-A1 · Sep 23, 2021 · US
High pressure pump
US-2021190049-A1 · Jun 24, 2021 · US
Reciprocating pumps having a pivoting arm
US-11035348-B2 · Jun 15, 2021 · US
Fluid pumps with shifters
US-2021155005-A1 · May 27, 2021 · US
Plunger pump
US-2021131426-A1 · May 6, 2021 · US
High pressure pump
US-10968900-B2 · Apr 6, 2021 · US
Non-pulsation pump having stroke adjustment mechanism
US-10890166-B2 · Jan 12, 2021 · US
Reciprocating Pump Trunnions Connecting Crosshead and Connecting Rod
US-2020386222-A1 · Dec 10, 2020 · US
Oral cleaning device with variable fluid pressurization
US-2020383761-A1 · Dec 10, 2020 · US
Piston pump unit for a hydraulic vehicle braking system
US-2020361434-A1 · Nov 19, 2020 · US
Eccentric gear drive with reduced backlash
US-10767732-B2 · Sep 8, 2020 · US
Piston pump assembly comprising piston with variable stroke and vehicle braking system comprising the same
US-10760555-B2 · Sep 1, 2020 · US
High-pressure pump
US-10690098-B2 · Jun 23, 2020 · US
Semi-free rotating crankshaft actuator to pre-stress and fast release a spring loadable plunger for an oral healthcare appliance
US-10598163-B2 · Mar 24, 2020 · US
Pump assemblies and pumping systems incorporating pump assemblies
US-2020072201-A1 · Mar 5, 2020 · US
Pump mechanism and beverage dispenser
US-2020062573-A1 · Feb 27, 2020 · US
Fluid pump leakage diversion
US-10465678-B2 · Nov 5, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04B9/04?
- CPC F04B9/04 is the Cooperative Patent Classification code for “the means being cams, eccentrics or pin-and-slot mechanisms.”
- How many patents are filed under CPC F04B9/04 (the means being cams, eccentrics or pin-and-slot mechanisms)?
- Our database includes 82 publications tagged with this CPC code.
- Is patent activity under CPC F04B9/04 growing?
- Publication counts under this code: 5 in 2024 vs 5 in 2025 (latest complete years).