Description
ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS (engines F03C); ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
F04C
Technology
Sub-Class
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- 70 1520 US PATENTS IN FORCE
- 729 US APPLICATIONS PENDING
- 1361 Total Patent Owners
- 6673 TOTAL INVENTORS
Subclasses
| Subclass | Title |
|---|---|
| 2/00 | Rotary-piston machines or pumps (with non-parallel axes of co-operating members F04C 3/00; with the working-chamber walls at least partly resiliently deformable F04C 5/00; with fluid ring or the like F04C 7/00; rotary-piston pumps specially adapted for elastic fluids F04C 18/00, F04C 19/00; rotary-piston machines or pumps in which the working-fluid is exclusively displaced by, or exclusively displaces, one or more reciprocating pistons F04B) |
| 2/02 | Rotary-piston machines or pumps (with non-parallel axes of co-operating members F04C 3/00; with the working-chamber walls at least partly resiliently deformable F04C 5/00; with fluid ring or the like F04C 7/00; rotary-piston pumps specially adapted for elastic fluids F04C 18/00, F04C 19/00; rotary-piston machines or pumps in which the working-fluid is exclusively displaced by, or exclusively displaces, one or more reciprocating pistons F04B) of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents |
| 2/04 | Rotary-piston machines or pumps (with non-parallel axes of co-operating members F04C 3/00; with the working-chamber walls at least partly resiliently deformable F04C 5/00; with fluid ring or the like F04C 7/00; rotary-piston pumps specially adapted for elastic fluids F04C 18/00, F04C 19/00; rotary-piston machines or pumps in which the working-fluid is exclusively displaced by, or exclusively displaces, one or more reciprocating pistons F04B) of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents of internal-axis type |
| 2/06 | Rotary-piston machines or pumps (with non-parallel axes of co-operating members F04C 3/00; with the working-chamber walls at least partly resiliently deformable F04C 5/00; with fluid ring or the like F04C 7/00; rotary-piston pumps specially adapted for elastic fluids F04C 18/00, F04C 19/00; rotary-piston machines or pumps in which the working-fluid is exclusively displaced by, or exclusively displaces, one or more reciprocating pistons F04B) of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents of other than internal-axis type (F04C 2/063 takes precedence) |
| 2/063 | Rotary-piston machines or pumps (with non-parallel axes of co-operating members F04C 3/00; with the working-chamber walls at least partly resiliently deformable F04C 5/00; with fluid ring or the like F04C 7/00; rotary-piston pumps specially adapted for elastic fluids F04C 18/00, F04C 19/00; rotary-piston machines or pumps in which the working-fluid is exclusively displaced by, or exclusively displaces, one or more reciprocating pistons F04B) of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents with coaxially-mounted members having continuously-changing circumferential spacing between them |
Recent Patents
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 9,121,237 | Methods of coating wellbore tools and components having such coatings | Jul 28, 11 | Sep 01, 15 | BAKER HUGHES INCORPORATED |
| 9,121,276 | Injection molded seals for compressors | Jul 23, 13 | Sep 01, 15 | EMERSON CLIMATE TECHNOLOGIES, INC. |
| 9,121,278 | Positive displacement expander and refrigeration cycle apparatus including positive displacement expander | Jan 19, 10 | Sep 01, 15 | MITSUBISHI ELECTRIC CORPORATION |
| 9,121,396 | Positive-displacement pump including a pressure absorber | Apr 20, 10 | Sep 01, 15 | MICHELIN RECHERCHE ET TECHNIQUE S.A., |
| 9,121,401 | Passive pressure regulation mechanism | Sep 06, 13 | Sep 01, 15 | APERIA TECHNOLOGIES, INC. |
| 9,121,404 | Screw compressor unit | Apr 24, 13 | Sep 01, 15 | KOBE STEEL, LTD., |
| 9,121,405 | Trochoidal rotary device | Nov 12, 12 | Sep 01, 15 | GE OIL & GAS COMPRESSION SYSTEMS, LLC |
| 9,121,406 | Scroll compressor and method for machining discharge port of the same | May 24, 11 | Sep 01, 15 | MITSUBISHI HEAVY INDUSTRIES, LTD. |
| 9,121,407 | Compressor diagnostic and protection system and method | Jul 01, 13 | Sep 01, 15 | EMERSON CLIMATE TECHNOLOGIES, INC. |
| 9,121,411 | Motor driven compressor and hermetic sealing inspection method for the same | Dec 31, 12 | Sep 01, 15 | KABUSHIKI KAISHA TOYOTA JIDOSHOKKI |
| 9,115,583 | Compressor | Dec 15, 11 | Aug 25, 15 | CALSONIC KANSEI CORPORATION |
| 9,115,706 | Compressor | Mar 18, 13 | Aug 25, 15 | KABUSHIKI KAISHA TOYOTA JIDOSHOKKI |
| 9,115,714 | Screw compressor having lubricating oil system | Apr 20, 11 | Aug 25, 15 | MAYEKAWA MFG. CO., LTD. |
| 9,115,715 | Compressor with pressure reduction groove formed in eccentric part | Sep 24, 12 | Aug 25, 15 | DAIKIN INDUSTRIES, LTD. |
| 9,115,716 | Vane compressor with vane aligners | Aug 02, 11 | Aug 25, 15 | MITSUBISHI ELECTRIC CORPORATION |
| 9,115,717 | Axial disc and gear pump with axial disc | Nov 30, 11 | Aug 25, 15 | ROBERT BOSCH GMBH |
| 9,115,718 | Compressor bearing and unloader assembly | Jan 21, 14 | Aug 25, 15 | EMERSON CLIMATE TECHNOLOGIES, INC. |
| 9,115,719 | Scroll fluid machine with cooling fan and passage | Jul 29, 13 | Aug 25, 15 | HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. |
| 9,115,935 | Single flow circuit heat absorbing/release device for periodic positive and reverse directional pumping | Nov 17, 08 | Aug 25, 15 | |
| 9,109,589 | Electric compressor and assembly method thereof | Aug 26, 10 | Aug 18, 15 | MITSUBISHI HEAVY INDUSTRIES, LTD. |
Recent Publications
| Publication # | Title | Filing Date | Pub Date | Patent Owner |
|---|---|---|---|---|
| 2015/0247,405 | Rotary Expansible Chamber Devices Having Adjustable Working-Fluid Ports, And Systems Incorporating The Same | Aug 06, 13 | Sep 03, 15 | Not available |
| 2015/0247,497 | WATERPROOF PUMP ENCLOSURE AND SYSTEM INCLUDING SAME | Feb 27, 15 | Sep 03, 15 | PREFERRED UTILITIES MANUFACTURING CORPORATION |
| 2015/0247,498 | Pump Integrated with Two Independently Driven Prime Movers | Mar 03, 15 | Sep 03, 15 | |
| 2015/0247,499 | Toy Fluid Pumping Gun | May 18, 15 | Sep 03, 15 | |
| 2015/0247,500 | KEY COUPLING AND SCROLL COMPRESSOR INCORPORATING SAME | May 18, 15 | Sep 03, 15 | BITZER KUEHLMASCHINENBAU GMBH |
| 2015/0239,753 | PURIFICATION SYSTEM | Dec 30, 14 | Aug 27, 15 | GLOBAL SOLAR WATER POWER SYSTEMS, INC. |
| 2015/0240,791 | SOLAR WATER PUMP | Oct 26, 12 | Aug 27, 15 | |
| 2015/0240,805 | High-Pressure Pump for Use in a High-Pressure Press | Feb 25, 14 | Aug 27, 15 | NOVATEK IP, LLC |
| 2015/0240,806 | ROTARY PUMP WITH A PLASTIC COMPOSITE STRUCTURE | Feb 16, 15 | Aug 27, 15 | SCHWABISCHE HUTTENWERKE AUTOMOTIVE GMBH |
| 2015/0240,807 | ADJUSTABLE VANE PUMP | Feb 20, 15 | Aug 27, 15 | JOMA-POLYTEC GMBH |
| 2015/0240,808 | VARIABLE DISPLACEMENT VANE PUMP | Sep 20, 13 | Aug 27, 15 | KAYABA INDUSTRY CO., LTD. |
| 2015/0240,809 | VARIABLE DISPLACEMENT PUMP | Sep 03, 13 | Aug 27, 15 | MAGNA POWERTRAIN BAD HOMBURG GMBH |
| 2015/0240,810 | SCREW SPINDLE PUMP | Jan 26, 15 | Aug 27, 15 | LEISTRITZ PUMPEN GMBH |
| 2015/0240,811 | ELECTRIC PUMP | Feb 24, 15 | Aug 27, 15 | LG INNOTEK CO., LTD. |
| 2015/0240,812 | METHOD FOR CONVEYING HYDRAULIC FLUID, AND ELECTROHYDRAULIC MOTOR-PUMP UNIT THEREFOR | Feb 27, 15 | Aug 27, 15 | RAUSCH & PAUSCH GMBH |
| 2015/0240,813 | ELECTRIC PUMP | Feb 20, 15 | Aug 27, 15 | LG INNOTEK CO., LTD. |
| 2015/0240,814 | COMPRESSOR FOR NATURAL GAS | Jan 06, 15 | Aug 27, 15 | TECUMSEH PRODUCTS COMPANY |
| 2015/0240,815 | ROTARY COMPRESSOR | Aug 19, 13 | Aug 27, 15 | DAIKIN INDUSTRIES, LTD. |
| 2015/0240,816 | INTERMITTENT COUPLING OILING | Sep 17, 13 | Aug 27, 15 | MAGNA POWERTRAIN BAD HOMBURG GMBH |
| 2015/0240,817 | OIL SEPARATOR DEVICE FOR A VOLUMETRIC COMPRESSOR AND VOLUMETRIC COMPRESSOR | Aug 27, 13 | Aug 27, 15 |
Top Owners in This Class
Top Owners in This Subclass
Applications Filed in This Class - By Year
Applications Filed in This Subclass - By Year
Patents Issued To Date - By Filing Year
Average Time to Issuance
- 33 Months (last 2 years Issuances)
- 33 Months (last 5 years Issuances)
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