Class F04B : POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
Subclass 1/28: 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 for machines or pumps with stationary cylinders
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 12264660 | Wobble plate pistonwater pump for use ina low flow gas pressure washer or a low current electric pressure washer | Aug 19, 22 | Apr 01, 25 | Active Products Inc. |
| 12049879 | Wobble plate piston water pump for use in a low flow gas pressure washer or a low current electric pressure washer | Jul 29, 22 | Jul 30, 24 | Not available |
| 11434890 | Wobble plate piston water pump for use in a low flow gas pressure washer or a low current electric pressure washer | Jul 20, 20 | Sep 06, 22 | Not available |
| 11286775 | Rotatable piston assembly | Oct 15, 18 | Mar 29, 22 | Poisedon Fluid Power, LLC |
| 10954936 | Axial piston machine with recess in the region of the loading pressure channel | May 23, 19 | Mar 23, 21 | Robert Bosch GmbH |
| 10859061 | Axial piston machine | Mar 08, 18 | Dec 08, 20 | MAHLE International GmbH |
| 10753347 | Wobble plate piston pump for low flow gas and electric water pressure washers | Jun 25, 18 | Aug 25, 20 | Active Products Inc. |
| 10738757 | Variable displacement pump-motor | Dec 04, 16 | Aug 11, 20 | Regetns of the University of Minnesota |
| 10590908 | Hydrostatic axial piston motor of bent-axis construction | Nov 20, 17 | Mar 17, 20 | Robert Bosch GmbH |
| 10451027 | Axial piston machine with outlet control | Mar 09, 16 | Oct 22, 19 | Mahle International GmbH |
| 10215169 | Apparatus, system, and method for introducing a liquid into a vessel | May 15, 17 | Feb 26, 19 | RareCyte, Inc. |
| 9989048 | End of stroke detection for plunger velocity correction | Jul 27, 15 | Jun 05, 18 | Caterpillar Inc. |
| 9051927 | Water pump having two operating conditions | Jun 14, 12 | Jun 09, 15 | BRIGGS & STRATTON CORPORATION |
| 8882474 | Variable displacement type compressor with displacement control mechanism | Oct 27, 09 | Nov 11, 14 | KABUSHIKI KAISHA TOYOTA JIDOSHOKKI |
| 6769667 | Control valve for variable-capacity compressor | Nov 22, 02 | Aug 03, 04 | FUJIKOKI CORPORATION |
| 6498973 | Flow control for electro-hydraulic systems | Dec 28, 00 | Dec 24, 02 | BLUE LEAF I.P., INC. |
| 6012905 | Suction and discharge valve mechanism for fluid displacement apparatus | Feb 25, 98 | Jan 11, 00 | SANDEN HOLDINGS CORPORATION |
| 5273405 | Fluid cushioning apparatus for hydraulic intensifier assembly | Jul 07, 92 | Dec 28, 93 | POSSIS CORPORATION, THROUGH ITS JET EDGE, INC. SUBSIDIARY, TC/AMERICAN MONORAIL, INC., |
| 5165863 | Slant plate type compressor with variable capacity control mechanism | Nov 13, 91 | Nov 24, 92 | SANDEN CORPORATION |
| Publication # | Title | Filing Date | Pub Date | Patent Owner |
|---|---|---|---|---|
| 2022/0018,341 | CYLINDER DRIVE DEVICE AND FLOW CHANNEL UNIT | Oct 10, 19 | Jan 20, 22 | SMC Corporation |
| 2019/0331,100 | ADAPTIVE CONTROL SYSTEM AND METHODS FOR WELL SERVICE PUMP SYSTEMS | Apr 26, 19 | Oct 31, 19 | Not available |
| 2016/0146,198 | Metering Pump | Jun 23, 14 | May 26, 16 | Not available |
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