Class F04B : POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
Subclass 1/26: 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 Control
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 10502197 | Pump | Dec 22, 17 | Dec 10, 19 | FNA Group, Inc. |
| 10473097 | System and method for speed control of variable speed pumping systems | Sep 02, 15 | Nov 12, 19 | TIGERFLOW SYSTEMS, LLC |
| 10280906 | Hydraulic system for work machine | Jun 06, 17 | May 07, 19 | Kubota Corporation |
| 10280913 | Cryopump system, method of operating the same, and compressor unit | Mar 12, 14 | May 07, 19 | Sumitomo Heavy Industries Ltd. |
| 10125761 | System for supplying a pressurized liquid, method for supplying a pressurized liquid using said system, and machine for preparing beverages that includes said system | Feb 04, 13 | Nov 13, 18 | MINIMMA ESPRESSO, S.L. |
| 10066618 | Variable displacement compressor with an oil check valve | Nov 05, 14 | Sep 04, 18 | MAHLE International GmbH |
| 10054119 | Operating machine | Jan 31, 12 | Aug 21, 18 | Hitachi Construction Machinery Co., Ltd. |
| 9879667 | Variable load sense spring setting for axial piston open circuit pump | Feb 27, 15 | Jan 30, 18 | DANFOSS POWER SOLUTIONS INC. |
| 9850884 | Pump | Dec 01, 15 | Dec 26, 17 | FNA GROUP, INC. |
| 9850887 | Swash plate type variable displacement compressor | Jul 15, 15 | Dec 26, 17 | KABUSHIKI KAISHA TOYOTA JIDOSHOKKI |
| 9850921 | Control device for hydrostatic drives | Jul 31, 13 | Dec 26, 17 | DANFOSS POWER SOLUTIONS GMBH & CO. OHG |
| 9816498 | Variable displacement swash-plate compressor | Mar 26, 14 | Nov 14, 17 | KABUSHIKI KAISHA TOYOTA JIDOSHOKKI |
| 9803629 | Variable displacement swash plate compressor | Mar 24, 15 | Oct 31, 17 | KABUSHIKI KAISHA TOYOTA JIDOSHOKKI |
| 9790936 | Variable displacement swash plate compressor | Mar 24, 15 | Oct 17, 17 | KABUSHIKI KAISHA TOYOTA JIDOSHOKKI |
| 9765761 | Electric actuator for drive apparatus | Aug 24, 15 | Sep 19, 17 | HYDRO-GEAR LIMITED PARTNERSHIP |
| 9726163 | Variable displacement swash plate type compressor | Feb 25, 15 | Aug 08, 17 | KABUSHIKI KAISHA TOYOTA JIDOSHOKKI |
| 9677552 | Double-headed piston type swash plate compressor | Jul 14, 14 | Jun 13, 17 | KABUSHIKI KAISHA TOYOTA JIDOSHOKKI |
| 9651037 | Control valve for a variable displacement compressor | Apr 11, 13 | May 16, 17 | TGK CO., LTD. |
| 9605693 | Hydraulic pressure control device for swing motor for construction machinery | Jan 07, 13 | Mar 28, 17 | DOOSAN INFRACORE CO., LTD. |
| 9523357 | Variable displacement swash plate type compressor | Mar 24, 14 | Dec 20, 16 | KABUSHIKI KAISHA TOYOTA JIDOSHOKKI |
| Publication # | Title | Filing Date | Pub Date | Patent Owner |
|---|---|---|---|---|
| 2020/0032,778 | SERVO REGULATOR | Mar 13, 18 | Jan 30, 20 | KYB Corporation |
| 2019/0195,207 | HYDRAULIC SYSTEM FOR WORK MACHINE | Feb 28, 19 | Jun 27, 19 | Kubota Corporation |
| 2016/0222,949 | PUMPING MECHANISM WITH PLUNGER | Jan 30, 15 | Aug 04, 16 | CATERPILLAR INC. |
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