Class F04B : POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
Subclass 1/22: Multi-cylinder machines or pumps characterised by number or arrangement of cylinders (F04B 3/00 takes precedence; fluid-driven pumps F04B 9/08; control of reciprocating machines or pumps in general F04B 49/00) having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block having two or more sets of cylinders or pistons
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 12158143 | Power end frame with residual compressive stress and methods | Apr 30, 20 | Dec 03, 24 | Caterpillar Inc. |
| 12103651 | Multi-function oar | Nov 23, 21 | Oct 01, 24 | CHUAN JIING ENTERPRISE CO., LTD. |
| 11905938 | Piston hydraulic device | Apr 09, 19 | Feb 20, 24 | DANA MOTION SYSTEMS ITALIA S.R.L. |
| 11788505 | Hydraulic assembly device, system and method | Mar 22, 19 | Oct 17, 23 | Gartech, LLC |
| 11686305 | Power end for hydraulic fracturing pump | Apr 21, 21 | Jun 27, 23 | ST9 Gas and Oil, LLC |
| 11261861 | Hydrostatic piston machine | Sep 27, 19 | Mar 01, 22 | Robert Bosch GmbH |
| 11137001 | Hydraulic drive apparatus | Jul 31, 18 | Oct 05, 21 | Kawasaki Jukogyo Kabushiki Kaisha |
| 11053929 | Variable displacement pump | Sep 23, 16 | Jul 06, 21 | Kabushiki Kaisha Toyota Jidoshokki |
| 11009024 | Power end for hydraulic fracturing pump | Nov 11, 19 | May 18, 21 | ST9 Gas and Oil, LLC |
| 10961991 | Hydraulic swash block positioning system | Feb 11, 14 | Mar 30, 21 | Innas B.V. |
| 10830221 | Hydraulic device, a method of manufacturing a hydraulic device and a group of hydraulic devices | May 17, 17 | Nov 10, 20 | INNAS BV |
| 10808686 | Hydraulic rotary machine | Mar 07, 17 | Oct 20, 20 | Kobe Steel, Ltd. |
| 10794185 | Cylinder block and swash plate type liquid-pressure rotating apparatus including same | Nov 09, 17 | Oct 06, 20 | Kawasaki Jukogyo Kabushiki Kaisha |
| 10788024 | Fluid pressure pump | Mar 26, 13 | Sep 29, 20 | MITSUBISHI HEAVY INDUSTRIES, LTD. |
| 10760683 | Cradle-mounted swash with trunnion-mounted positioning arms | Jan 29, 18 | Sep 01, 20 | Parker-Hannifin Corporation |
| 10690109 | Distribution device for a hydraulic machine and a hydraulic machine fitted with such a device | Nov 01, 16 | Jun 23, 20 | Poclain Hydraulics Industrie |
| 10598146 | Hydraulic pump-motor | Aug 08, 14 | Mar 24, 20 | Komatsu Ltd. |
| 10590920 | Pump device | Nov 03, 15 | Mar 17, 20 | Danfoss A/S |
| 10527029 | Axial piston pump | May 15, 14 | Jan 07, 20 | HYDAC DRIVE CENTER GMBH |
| 10495074 | Pump arrangement | Nov 03, 15 | Dec 03, 19 | Danfoss A/S |
| Publication # | Title | Filing Date | Pub Date | Patent Owner |
|---|---|---|---|---|
| 2023/0400,007 | HYDRAULIC ASSEMBLY DEVICE, SYSTEM AND METHOD | Aug 25, 23 | Dec 14, 23 | Not available |
| 2021/0156,369 | PISTON HYDRAULIC DEVICE | Apr 09, 19 | May 27, 21 | Not available |
| 2019/0211,812 | A HYDRAULIC DEVICE, A METHOD OF MANUFACTURING A HYDRAULIC DEVICE AND A GROUP OF HYDRAULIC DEVICES | May 17, 17 | Jul 11, 19 | Not available |
| 2016/0025,081 | HYDRAULIC PUMP WITH DOUBLE DIRECTION OF ROTATION | Mar 27, 14 | Jan 28, 16 | HYDRO LEDUC |
| 2015/0078,930 | FLUID PRESSURE PUMP | Mar 26, 13 | Mar 19, 15 | MITSUBISHI HEAVY INDUSTRIES, LTD. |
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