Description
Class F01B : MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
Subclass 3/00: Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis
F01B 3/00
Sub-Class
Stats
- 317 US PATENTS IN FORCE
- 22 US APPLICATIONS PENDING
- 113 Total Patent Owners
- 1,210 TOTAL INVENTORS
Recent Patents
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 12196084 | Carriage assembly | Aug 09, 22 | Jan 14, 25 | ZPE LTD |
| 12186166 | Heat-assisted pumping systems for use in negative pressure wound therapy | Jul 26, 21 | Jan 07, 25 | Smith & Nephew PLC |
| 12097397 | Aerobic exercise training apparatus | Jul 07, 21 | Sep 24, 24 | Not available |
| 12025009 | Shut-off valve | Oct 03, 22 | Jul 02, 24 | MICROTECNICA S.R.L. |
| 12006826 | Aircraft engine with opposed piston engine | Sep 03, 20 | Jun 11, 24 | HTS LLC |
| 12000285 | Modular gland arrangements for a fluid end assembly | Sep 09, 22 | Jun 04, 24 | Kerr Machine Co. |
| 11994098 | Valve plate, cylinder block, and hydraulic motor | Sep 07, 21 | May 28, 24 | Komatsu Ltd. |
| 11946462 | Hydraulic axial piston unit and method for controlling of a hydraulic axial piston unit | Dec 02, 19 | Apr 02, 24 | Danfoss Power Solutions Inc. |
| 11898582 | System for a bent axis motor | Mar 09, 23 | Feb 13, 24 | DANA MOTION SYSTEMS ITALIA S.R.L. |
| 11828276 | Adjusting device for an axial piston machine | Nov 13, 18 | Nov 28, 23 | Liebherr Machines Bulle SA |
| 11821318 | Cam machine with adjustment mechanism | Jul 23, 20 | Nov 21, 23 | Not available |
| 11795926 | Motor-hydraulic machine unit for attachment to a hydraulic assembly | Jul 31, 20 | Oct 24, 23 | Robert Bosch GmbH |
| 11767833 | Support system for a displacement adjustment plate of an axial piston machine | Apr 07, 22 | Sep 26, 23 | DANA MOTION SYSTEMS ITALIA S.R.L. |
| 11746763 | Tilt linkage for variable stroke pump | Jun 23, 22 | Sep 05, 23 | CW HOLDINGS LTD. |
| 11686295 | Variable stroke pump | Sep 28, 21 | Jun 27, 23 | CW HOLDINGS LTD. |
| 11668297 | Pump having a passage extending between a cam plate oil reservoir and a bearing oil reservoir | Jan 22, 20 | Jun 06, 23 | FNA Group, Inc. |
| 11629789 | Valve assembly | Aug 26, 20 | Apr 18, 23 | Not available |
| 11591910 | Rotary axial piston machine with hydrostatic pressing device seal arrangement | Jan 26, 21 | Feb 28, 23 | Robert Bosch GmbH |
| 11592012 | Hydrostatic piston machine unit | Aug 20, 20 | Feb 28, 23 | Robert Bosch GmbH |
| 11555488 | Valve plate assembly | Sep 30, 20 | Jan 17, 23 | Danfoss A/S |
Recent Publications
| Publication # | Title | Filing Date | Pub Date | Patent Owner |
|---|---|---|---|---|
| 2025/0043,684 | Centering the Housing Parts of an Axial Piston Machine | Aug 01, 24 | Feb 06, 25 | Not available |
| 2025/0032,837 | WEIGHT TRAINING APPARATUS | Jul 30, 24 | Jan 30, 25 | Not available |
| 2025/0003,338 | Axial Piston Machine with Retraction Plate for High Rotational Speeds | Jun 20, 24 | Jan 02, 25 | Not available |
| 2024/0410,282 | HYDRAULIC MACHINE WITH A THREADED CENTRAL PIN FOR SETTING MACHINE PRELOAD | Jun 09, 23 | Dec 12, 24 | Not available |
| 2024/0318,553 | MODULAR GLAND ARRANGEMENTS FOR A FLUID END ASSEMBLY | May 31, 24 | Sep 26, 24 | Not available |
| 2024/0280,020 | VARIABLE DISPLACEMENT HYDRAULIC MOTOR | Feb 16, 23 | Aug 22, 24 | Not available |
| 2024/0151,225 | ZEROING DEVICE | Nov 02, 23 | May 09, 24 | Not available |
| 2024/0077,135 | AXIAL PISTON VARIABLE DISPLACEMENT HYDRAULIC DEVICES, SUCH AS HYDRAULIC MOTORS, AND METHODS OF OPERATING SAME | Sep 07, 23 | Mar 07, 24 | Regents of the University of Minnesota |
| 2022/0025,767 | OPPOSED PISTON ENGINE | Oct 11, 19 | Jan 27, 22 | Not available |
| 2021/0189,878 | HYDRAULIC AXIAL PISTON MACHINE | Sep 30, 20 | Jun 24, 21 | Not available |
| 2021/0156,253 | Modular Gland Arrangements For A Fluid End Assembly | Feb 03, 21 | May 27, 21 | Not available |
| 2021/0047,928 | VARIABLE DISPLACEMENT HYDRAULIC UNIT AND METHOD FOR OPERATING THE HYDRAULIC UNIT | Jul 30, 20 | Feb 18, 21 | Not available |
| 2019/0264,564 | CYLINDER BLOCK AND SWASH PLATE TYPE LIQUID-PRESSURE ROTATING APPARATUS INCLUDING SAME | Nov 09, 17 | Aug 29, 19 | KAWASAKI JUKOGYO KABUSHIKI KAISHA |
| 2019/0112,926 | ROTATABLE PISTON ASSEMBLY | Oct 15, 18 | Apr 18, 19 | CurAegis Technologies, Inc. |
| 2019/0100,714 | SLIDING SYSTEM | Oct 02, 18 | Apr 04, 19 | Not available |
| 2019/0055,931 | HYDRAULIC ROTARY MACHINE | Sep 14, 16 | Feb 21, 19 | KYB Corporation |
| 2018/0142,553 | HYDRAULIC AXIAL PISTON UNIT WITH CENTRAL FIXED HOLD DOWN DEVICE | Nov 17, 17 | May 24, 18 | Not available |
| 2018/0135,413 | AXIAL PISTON MACHINE | Apr 29, 16 | May 17, 18 | Not available |
| 2017/0370,218 | Piston Type Axial Expander | Jun 28, 16 | Dec 28, 17 | EXOES |
| 2017/0226,855 | LIQUID-PRESSURE ROTATING DEVICE | Jul 29, 15 | Aug 10, 17 | KAWASAKI JUKOGYO KABUSHIKI KAISHA |
Top Owners in This Subclass
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Patents Issued To Date - By Filing Year
Average Time to Issuance
- 30 Months (last 2 years Issuances)
- 30 Months (last 5 years Issuances)