| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 241 | INTERNAL GEAR PUMP | US15635057 | 2017-06-27 | US20180003173A1 | 2018-01-04 | Albert Cornet; Mathieu Chenoux |
| An internal gear pump includes a pinion, a ring arranged around the pinion, and a cylindrical wall arranged around the ring. A support element, on which the pinion and the ring are supported, carries high-pressure liquid towards a recess located at the junction between the ring and the cylindrical wall, and also carries low-pressure liquid towards another recess located at another point of the junction between the ring and the cylindrical wall. The recess allows the load of the ring on the cylindrical wall to be reduced. | ||||||
| 242 | Gerotor pump for a vehicle | US14666568 | 2015-03-24 | US09850898B2 | 2017-12-26 | Mohammad Ali Moetakef |
| A gerotor pump is provided with a body defining a chamber with cylindrical wall sections and having a fluid inlet and a fluid outlet, and a cover. An internally toothed gear member is supported for rotation within the chamber about a first axis, and has a cylindrical outer wall defining a series of grooves. Each groove has an associated aperture extending through the gear member to an inner surface of the gear member, and is radially positioned between adjacent teeth of the internally toothed gear member. An externally toothed gear member is rotatably supported within the internally toothed gear member about a second axis spaced apart from the first axis, and is coupled for rotation with a drive shaft. The internally toothed gear member and externally toothed gear member cooperate to form a plurality of variable volume pumping chambers therebetween to pump fluid. | ||||||
| 243 | ECCENTRIC SCREW PUMP | US15503901 | 2015-07-30 | US20170306760A1 | 2017-10-26 | Dirk OVERMEIER; Marcel GRIESDORN; Stefan GOETHEL |
| The invention relates to an eccentric screw pump, comprising at least one stator (1) composed of an elastic material and a rotor (2) that can be rotated in the stator (1), the stator (1) being surrounded by a stator casing (3) at least in some regions. The stator casing (3) consists of at least two casing segments (19) as a longitudinally divided casing and forms a stator clamping device, by means of which the stator (2) can be clamped against the rotor (1) in the radial direction. The pump is characterized in that the casing segments (19) have at least one clamping flange (20) having first clamping surfaces (21) at each end of the casing segments and that one or more clamping elements (22, 23), which can be displaced in the axial direction and have second clamping surfaces (24), are placed onto the clamping flange (20), the first clamping surfaces (21) and the second clamping surfaces (24) being designed in such a way and interacting in such a way that the stator casing (3) can be clamped against the stator in the radial direction in the course of an axial displacement of the clamping elements (22, 23). | ||||||
| 244 | Variable displacement rotary pump and displacement regulation method | US14386238 | 2013-03-13 | US09765778B2 | 2017-09-19 | Leonardo Cadeddu; Matteo Cortesi |
| A rotary positive displacement pump for fluids, in particular for the lubrication oil of a motor vehicle engine (60), has a displacement that can be regulated by means of the rotation of a stator ring (12) having an eccentric cavity (13) in which the rotor (15) of the pump (1) rotates. The stator ring (12) is configured as a multistage rotary piston for displacement regulation and is arranged to be directly driven by a fluid under pressure, in particular oil taken from a delivery side (19) of the pump or from a point of the lubrication circuit located downstream the oil filter (62). The invention also concerns a method of regulating the displacement of the pump (1) and a lubrication system for a motor vehicle engine in which the pump (1) is used. | ||||||
| 245 | ELASTIC CONTAINMENT ASSEMBLY FOR A PUMP | US15447273 | 2017-03-02 | US20170254329A1 | 2017-09-07 | Vittorio Andreis; Gabriele Sorrentino |
| A containment assembly for a pump provided with at least one pumping group and with at least one power transmission system to such a pumping group. The containment assembly comprises a substantially cylindrical containment vessel provided with an opening at one of the ends thereof, configured to at least partially enclose the pumping group and the respective power transmission system. The containment assembly also comprises at least one closure plate, sealably coupled with the containment vessel at the open end thereof and configured to hermetically enclose, in cooperation with such a containment vessel, the pumping group and the respective power transmission system. On a predetermined contact portion between the containment vessel and the closure plate at least one wave spring is provided, configured to keep the pumping group dynamically under compression by means of the closure plate. | ||||||
| 246 | CONTAINER ASSEMBLY FOR A PUMP | US15389488 | 2016-12-23 | US20170184098A1 | 2017-06-29 | Diego ANDREIS; Pierpaolo LUCCHESI |
| A container assembly (10) for a pump is described, provided with at least one pumping group (12, 14, 16, 18) and with at least one system (20) for transmitting power to such pumping group (12, 14, 16, 18). The container assembly (10) comprises at least one elastic element (26) sealingly housed inside such container assembly (10) at a predefined internal wall (28) thereof. Inside the elastic element (26), at least one cavity (32) is obtained which defines a corresponding air chamber configured for damping the variations of volume and the expansion of the fluid contained inside the pump following a possible change of state of the fluid itself when subjected to temperatures lower than its freezing point. | ||||||
| 247 | Positive displacement rotary devices with uniquely configured voids | US14595675 | 2015-01-13 | US09664047B2 | 2017-05-30 | David Alton McDaniel, Jr.; James W. Newman, Jr. |
| A rotary device is disclosed that includes a rotor comprising a main body and plurality of protrusions extending radially from the main body. At least a pair of voids are provided adjacent to each other in the main body of the rotor between each adjacent pair of the plurality of protrusions, and each pair of voids is spaced from each adjacent pair of voids by a distance greater than that between each adjacent void in each pair of voids. | ||||||
| 248 | VANE PUMP DEVICE AND HYDRAULIC APPARATUS | US15247648 | 2016-08-25 | US20170122314A1 | 2017-05-04 | Toshio NISHIKAWA |
| Disclosed is a vane pump device including: an even number of vanes; a rotor; a cam ring; an inner plate; and an outer plate. An inner-plate high pressure side through-hole and an inner-plate low pressure side recess portion are formed separately from each other in a rotation direction in cam ring side end surfaces of the inner plate and the outer plate, and communicate with a columnar groove which is a space of a vane groove on a rotation center side. The position of an inner-plate high pressure side through-hole upstream end and the position of an inner-plate low pressure side recess portion upstream end are point-symmetrical with each other with respect to the rotation center. | ||||||
| 249 | VANE PUMP DEVICE | US15247550 | 2016-08-25 | US20170122312A1 | 2017-05-04 | Toshio NISHIKAWA |
| An inner-plate cam ring side recess portion is formed in a cam ring side end surface of an inner plate, communicates with a columnar groove which is a center side space in a vane grooves, and supplies a working fluid to the columnar groove. The inner-plate cam ring side recess portion is divided into multiple sections between a first side discharge port, through which the working fluid is discharged at a first discharge pressure from a pump chamber, and a second side suction port through which the working fluid is suctioned into a pump chamber discharging the working fluid at a second discharge pressure. An angle of a separation portion in a rotation direction is smaller than or equal to an angle between the first side discharge port and the second side suction port. | ||||||
| 250 | Gear pump or hydraulic gear motor with helical toothing provided with hydraulic system for axial thrust balance | US14401465 | 2014-05-20 | US09567999B2 | 2017-02-14 | Stefano Ferretti; Danilo Persici |
| A gear pump has a toothed driving wheel, a toothed driven wheel, a front flange from which a projecting portion of the shaft protrudes, being connected to the shaft of the driving wheel, a back lid fixed to the case, and an intermediate flange between the case and the front flange. The intermediate flange has first and second chambers connected by a connection duct to the inlet or outlet fluid duct of the pump. A compensating ring is mounted in the first chamber and inserted on the shaft of the driving wheel to compensate the axial forces of the driving wheel and transmit the motion on the shaft of the driving wheel. A piston is mounted in the second chamber in order to stop against one end of the shaft of the driven wheel, in such manner to compensate the axial forces imposed on the toothed driven wheel. | ||||||
| 251 | LIQUID PUMP AND RANKINE CYCLE SYSTEM | US15150327 | 2016-05-09 | US20160363119A1 | 2016-12-15 | TAKUMI HIKICHI |
| A liquid pump in the present disclosure includes a pressure container, a shaft, a first bearing, a second bearing, a pump mechanism, and a thrust bearing. The internal space of the pressure container is partitioned into a high pressure side space and a low pressure side space. The shaft has a thrust supported face, one of both ends of the shaft is disposed in the high pressure side space, and the other of both ends of the shaft is disposed in the low pressure side space. The pump mechanism is disposed between the first bearing and the second bearing, and pumps liquid by rotation of the shaft. The thrust bearing is disposed to face the thrust supported face between the first bearing and the second bearing. | ||||||
| 252 | Rotary pump exhibiting an adjustable delivery volume, in particular for adjusting a coolant pump | US13966366 | 2013-08-14 | US09416786B2 | 2016-08-16 | Claus Welte; Uwe Meinig |
| An adjustable delivery volume rotary pump, including: first and second housing structures; a delivery chamber comprising a first chamber wall formed by the first housing structure, a second chamber wall formed by the second housing structure, a fluid inlet in a low-pressure region and a fluid outlet in a high pressure region; a pump wheel rotatable about a rotational axis in the delivery chamber; and a pressing device for generating pressing force. The second housing structure can be moved relative to the first housing structure from a first to a second position, against the pressing force. In the second position, a gap exists between the first and the second chamber walls and fluid can escape from the delivery chamber by bypassing the inlet and the outlet, or a circulation of the fluid which reduces the delivery rate of the rotary pump arises in the gap within the delivery chamber. | ||||||
| 253 | Hydraulic device | US14360885 | 2013-06-27 | US09366250B1 | 2016-06-14 | Hiroaki Takeda; Tetsuro Hosokawa |
| A hydraulic device includes a cover plate with a cylinder hole opposite an end surface of a rotating shaft of a gear which receives two thrust forces in the same direction. A piston extends through the cylinder hole. A working liquid in a high pressure side acts on a back surface of the piston to press the piston onto the end surface of the rotating shaft, thereby causing a drag that cancels the two thrust forces acting on the gear. | ||||||
| 254 | GEAR PUMP DRIVEN GEAR STATIONARY BEARING | US14298543 | 2014-06-06 | US20150354562A1 | 2015-12-10 | Brandon T. Kovach; Steven A. Heitz |
| One embodiment includes a gear pump with a driven gear, a gear shaft passing through the driven gear, and a stationary journal bearing. Also included is a fluid film, between a surface of the stationary journal bearing and a surface of the gear shaft, and a hybrid pad on the stationary journal bearing. The hybrid pad has a minimum leading edge angular location on the stationary journal bearing of 41.5° and a maximum trailing edge angular location on the stationary journal bearing of 54.5°. The gear pump also includes a porting path for supplying high pressure fluid from a discharge of the gear pump to the fluid film at the hybrid pad. | ||||||
| 255 | GEAR PUMP DRIVE GEAR STATIONARY BEARING | US14298561 | 2014-06-06 | US20150354561A1 | 2015-12-10 | Brandon T. Kovach; Steven A. Heitz |
| One embodiment includes a gear pump with a drive gear, a gear shaft passing through the drive gear, and a stationary journal bearing. Also included is a fluid film, between a surface of the stationary journal bearing and a surface of the gear shaft, and a hybrid pad on the stationary journal bearing. The hybrid pad has a minimum leading edge angular location on the stationary journal bearing of 29.5° and a maximum trailing edge angular location on the stationary journal bearing of 42.5°. The gear pump also includes a porting path for supplying high pressure fluid from a discharge of the gear pump to the fluid film at the hybrid pad. | ||||||
| 256 | GEAR PUMP DRIVE GEAR PRESSURE LOADED BEARING | US14298434 | 2014-06-06 | US20150354560A1 | 2015-12-10 | Brandon T. Kovach; Steven A. Heitz |
| One embodiment includes a gear pump with a drive gear, a gear shaft passing through the drive gear, and a pressure loaded journal bearing. Also included is a fluid film, between a surface of the pressure loaded journal bearing and a surface of the gear shaft, and a hybrid pad on the pressure loaded journal bearing. The hybrid pad has a minimum leading edge angular location on the pressure loaded journal bearing of 29.5° and a maximum trailing edge angular location on the pressure loaded journal bearing of 42.5°. The gear pump also includes a porting path for supplying high pressure fluid from a discharge of the gear pump to the fluid film at the hybrid pad. | ||||||
| 257 | GEAR PUMP DRIVEN GEAR PRESSURE LOADED BEARING | US14298411 | 2014-06-06 | US20150354559A1 | 2015-12-10 | Brandon T. Kovach; Steven A. Heitz |
| One embodiment includes a gear pump with a driven gear, a gear shaft passing through the driven gear, and a pressure loaded journal bearing. Also included is a fluid film, between a surface of the pressure loaded journal bearing and a surface of the gear shaft, and a hybrid pad on the pressure loaded journal bearing. The hybrid pad has a minimum leading edge angular location on the pressure loaded journal bearing of 41.5° and a maximum trailing edge angular location on the pressure loaded journal bearing of 54.5°. The gear pump also includes a porting path for supplying high pressure fluid from a discharge of the gear pump to the fluid film at the hybrid pad. | ||||||
| 258 | Two-spindle screw pump of double-flow construction | US13754689 | 2013-01-30 | US09080566B2 | 2015-07-14 | Weshen Christov; Hans Jung |
| The invention relates to a twin screw pump of double-flow design with a pump housing, two bearing portions and at least one gear portion with at least one gear chamber, with feed screws with double-flow flanks arranged on two shafts, the feed screws on the shafts having a root diameter, the shafts being mounted in the bearing portions via bearings, a seal for sealing the bearing portion with respect to the conveying portion, with gearwheels arranged on the shafts in the gear portion, the shafts being rotatably coupled by means of said gearwheels, characterized in that on either side the inner diameter of the seal is greater than, or the same size as, the root diameter of the feed screws, and/or in that on either side the inner diameter of the bearing is greater than, or the same size as, the inner diameter of the seal. | ||||||
| 259 | ROTOR SET | US14144550 | 2013-12-31 | US20150184653A1 | 2015-07-02 | YAO-CHENG WANG |
| A rotor set comprises a pair of engaging rotors disposed in a pump room of a housing rotating oppositely with identical speeds. Each rotor comprises a plurality of lobes, and each lobe has a fan-shaped end with a curved edge. The lobe generates an eccentric force to the rotor during the rotation to reduce mechanical consuming energy and save dynamic energy. Therefore, the rotors can achieve strong eccentric torque and self-vacuum effect with low dynamic energy. | ||||||
| 260 | Tunable Progressive Cavity Pump | US14486316 | 2014-09-15 | US20150078943A1 | 2015-03-19 | Shawn N. Gunter; Kenneth T. Bebak; Randall L. Maxwell; Thomas N. Hendryx |
| A well pump assembly includes a progressive cavity pump having a stator with an elastomeric inner portion. The stator has an axial cavity with internal lobes; a rotor with external lobes positioned within the axial cavity. An effector selectively increases and decreases a stiffness of the stator by changing a cross sectional area of the axial cavity in the stator. The effector may include a reservoir within the stator containing a fluid. A reservoir pump selectively increases and decreases a pressure of the fluid in the reservoir in response to sensing the flow rate from the progressive cavity pump and the torque of the motor. Alternately, the reservoir may contain a magneto-rheological fluid (MR fluid). A coil generates an electromagnetic field within the MR fluid to selectively increase and decrease a viscosity of the MR fluid. | ||||||
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