| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 221 | Fluid circulation path for motor pump | US10290705 | 2002-11-08 | US20030161743A1 | 2003-08-28 | Robert R. Kimberlin; Robert E. Harvey, III; William M. Larson; William C. Rawnsley, JR. |
| A fluid pump includes a pump head having an inlet for receiving fluid at a first pressure and an outlet for outputting fluid at a second pressure greater than the first pressure. Pressurized fluid is directed through a first passage to the outlet without the pressurized fluid leaving the pump head prior to reaching the outlet. A second passage directs pressurized fluid to a fluid circulation path which is at least partially external to the pump head with the fluid circulation path terminating adjacent the outlet. Pressurized fluid passing through the first and second passages is directed to the outlet without being re-pressurized by the pump head. The first and second passages are in opposed relation to one another to provide balancing of thrust produced by the flow of pressurized fluid through the passages. An electric motor drives the pump head. The fluid circulation path may include portions of the electric motor. | ||||||
| 222 | Pump for conveying molten masses of polymers and elastomers | US10349382 | 2003-01-21 | US20030152474A1 | 2003-08-14 | Macchi Luigi |
| A pump (1) for conveying molten masses of polymers and/or elastomers comprising a pump body in which are formed an inlet duct (7) for entry of the material, an outlet duct (8) for discharge of the material and a central body (11) communicating with the inlet and outlet ducts (7, 8) and destined to house at least one gear (15, 16) mounted on a motorised shaft (18) for conveying the material from the inlet duct (7) toward the outlet duct (8). The pump body consists of two parts (2, 2null) that can be assembled together, each part of the pump body comprising at least one through hole (14) communicating with the central chamber (11), so that said at least one shaft (18) of the gear (15, 16) is rotatably supported directly in the pair of opposite facing holes (14) of the two parts (2, 2null) of the pump body. | ||||||
| 223 | Gear Pump | US10297789 | 2002-12-09 | US20030147765A1 | 2003-08-07 | Edgar R Schlipf; Peter Heidemeyer; Rainer Herter |
| A gear pump comprises a casing (1) and gear rotors (2, 3) disposed therein. The gear rotors (2, 3) are lodged in bearing sections (15 to 18) of plain bearings (11 to 14) that are lubricated by the pumping medium. They have at least one cooling duct (39) which is embodied such that cooling varies along the circumference and/or in the longitudinal direction and/or in the radial direction of the plain bearing (11 to 14). | ||||||
| 224 | Rotary vane pump with vane wear access port and method | US10315327 | 2002-12-10 | US20030124010A1 | 2003-07-03 | Timothy H. Henderson |
| A rotary vane pump, including a housing within which is rotatably mounted a rotor having a plurality of slots therein with a vane positioned for sliding movement within each of the slots. An access port is formed in the housing communicating with the rotor at a reference position in relation to the slots. The access port is sized to permit alignment of any one of the slots with the access port by rotating the rotor, maintaining the vane within the aligned one slot and at a datum within the slot, and permitting entry into the access port of an aligned slot of a stylus having a predetermined length in relation to the datum for determining the length of the vane. A determination of whether wear to the vane has met or exceeded a predetermined amount can be determined by reference to a portion of the stylus exterior to the access port. | ||||||
| 225 | Hydraulic motor | US10174593 | 2002-06-19 | US20030003007A1 | 2003-01-02 | Xingen Dong |
| A hydraulic motor 10/110/210 has an end cover 12/112/212 including a first port 14/114/214 and a second port 16/116/216, and a gerotor drive assembly 18/118/218 which hypocycloidally moves a drive link 22/122/222. The motor's flow circuit comprises a working path (e.g., for providing rotational motion) from the end cover 12/112/212, through the drive assembly 18/118/218 and back to the end cover 12/112/212. Bolts 26/126/226 extend through registered openings in the end cover 12/112/212, the drive assembly 18/118/218 and a housing 20/120/220 and the bolts 26/126/226 are positioned in a circular array outside the motor's pressure vessel whereby the motor 10/110/210 has a nulldry boltnull design. The motor's flow circuit can also comprises a non-working path (for cooling, lubrication and/or sealing purposes) which circulates fluid through chambers surrounding the drive train components. | ||||||
| 226 | Sealless multiphase screw-pump-and-motor package | US09564274 | 2000-05-04 | US06457950B1 | 2002-10-01 | Paul Cooper; Allan J. Prang |
| A pump is disclosed, including a motor and a pump housing, for pumping mixed gas and liquid. The pump includes two intermeshed screw members for providing progressive cavities for transporting mixed fluids, within a pumping cavity, from a suction passage to a discharge reservoir of the pump housing. It further uses pumped product to provide cooling and lubrication to the motor and to bearings and timing gears of the screw members. By using pumped product for lubrication and cooling, the need for seals is eliminated, thereby reducing the need for maintenance. This makes the pump package advantageous for subsea deployment for use in pumping nearly depleted wells which may be manifolded together to provide adequate product flow. | ||||||
| 227 | Apparatus for indicating remaining life expectancy of a rotary sliding pump | US10121126 | 2002-04-11 | US20020110467A1 | 2002-08-15 | Timothy H. Henderson |
| The present invention is directed to an apparatus for determining vane wear in rotary sliding vane pumps that operate using slideable vanes, while the pump is in operation. The invention includes a structure that allows a predetermined amount of leakage from a pumping chamber after a predetermined amount of vane length is worn away. The leakage produces a decrease in pump efficiency that is indicated by an indicating device. The indicating device serves to warn that an amount of vane wear has occurred that indicates pump inspection is warranted. The invention also includes a view port formed in the pump housing to allow inspection of the vanes without having to disassemble the pump. | ||||||
| 228 | Method and apparatus for temperature stabilization in gear pumps | US09188175 | 1998-11-09 | US06280164B1 | 2001-08-28 | Stefan Kalt; Michael Heinen |
| A method stabilizes the temperature in a gear pump lubricated with material to be delivered. At least one housing part has at least two slide bearings in which shafts are mounted and are lubricated by medium to be delivered. A medium is adjusted in a temperature stabilizer to a predetermined temperature and then flows firstly through the housing part and secondly through shafts and/or slide bearings to stabilize the temperature. | ||||||
| 229 | Rotary pump with a thermally conductive housing | US994643 | 1997-12-19 | US6030187A | 2000-02-29 | Kevin Whitefield; Simon John Baseley |
| A rotary pump which is suitable for use as the pump for a vehicle power steering system has an integral motor. The pump includes a housing 16 through which a rotatable shaft 4 extends having at one end a pump rotor assembly 5. The pump rotor assembly 5 is in fluid communication with an oil cavity 15 which is in good thermal contact with the housing 16. The housing 16 functions as a heat sink. Mounted on the radially outer wall of the housing 16 is the stator 20 of the motor with the stator 20 also in good thermal contact with the housing 16. The rotor 26 of the motor is located radially outside of the stator 20 and has axially arranged magnets 27. The rotor 26 is connected to the rotatable shaft 4 by means of a radially extending wall 26b. The integral rotary pump and motor is very compact and straightforward to construct and is also capable of withstanding the heat generated by the motor components during the high demands of a vehicle steering system. | ||||||
| 230 | Pump with undulating pump element | US63449 | 1993-05-18 | US5352103A | 1994-10-04 | Dirk Auer |
| A pump comprises a pump casing having a pump channel, a pump element rotating in the pump channel, and a rotor shaft mounted in the pump casing and attached to the pump element. The pump element has a cylindrical outer periphery, and undulating surfaces in the axial direction. The opening in the casing which receives the rotor shaft has an annular groove in which there is disposed a spring loaded sealing element which bears slidably against a flat end face of the pump element when the pump element rotates. The sealing element is subjected to the pressure of superheated steam which is conducted to the sealing element via pressure channels in the pump casing connected to the annular groove. The rotor shaft includes radial and axial channels through which a coolant flows. | ||||||
| 231 | Melt pump | US864798 | 1992-04-07 | US5292237A | 1994-03-08 | Taii Orimo; Shinichi Fukumizu; Hideki Uota; Masashi Konno; Nobuki Nagami |
| A melt pump comprises a pump housing having an intake port and a discharge port and a pair of gear rotors. Each of the pair of gear rotors having a gear part and a shaft part integrated with each other, which are arranged within the pump housing in such a manner as to be rotatable in mutually meshing condition. The melt pump further comprises a recovering passage for guiding resin leaking through a clearance between the pump housing and each of the pair of gear rotors into the intake port, a cooling hole drilled inside each of the gear rotors while facing to each clearance forming region; and a pipe inserted into the cooling hole for supplying cooling liquid. A sleeve for lining the internal periphery of the cooling hole is located in the hole so as to utilize the inside of the sleeve as a cooling liquid passage. | ||||||
| 232 | Insert for barrel extruders | US864504 | 1992-04-07 | US5209937A | 1993-05-11 | Waino J. Kangas |
| A segmented barrel extruder device for extrusion and having a plurality of segments enclosing an extruder barrel aligned on an axis. The segments include axially perpendicular rectangular end flanges having exposed sides and a central portion for housing an extruder barrel. The flanges have aligned straight line paths for fluid flow in a plane perpendicular to the axis. Accordingly, the paths each intersect two exposed sides without intersecting the central portion. The segments also include an extruder barrel between flanges. The segments have a housing having straight axial channels which are connected to the paths in the flanges to conduct fluid from points along one path in each path to of points along a corresponding path. The barrel extruder also includes a centered portion aligned with the flange central portion. There is also provided an extruder barrel insert sized to fit in the centered portion of the barrel having a key for preventing rotational movement. The insert has extruder bores for engagement with a screw and has high resistance to wear compared to the wear resistance of the extruder barrel. Finally, the device includes an inlet and an outlet for fluid flow. | ||||||
| 233 | Method of and means for preventing thermal shock to a hydraulic motor in an open-loop hydraulic system | US815455 | 1977-07-13 | US4129986A | 1978-12-19 | Allan E. Heinrich |
| Disclosed is a method of preventing thermal shock to a hydraulic motor in an open-loop hydraulic system. The method comprises the step of circulating warm oil through the motor when it is not in use. Preferably the method includes the further step of returning the warm oil to the tank after it has passed through the motor, and where appropriate it may also include the preliminary step of lowering the pressure of the warm oil before it is passed through the motor.The method is disclosed as applied to a vane motor, and means for carrying it out in that context are also disclosed. | ||||||
| 234 | Temperature control of stator/rotor fit in helical gear pumps | US3771906D | 1972-06-05 | US3771906A | 1973-11-13 | BOURKE J |
| Loss of capacity in a helical gear pump resulting from wear of parts is restored by raising the temperature of the stator, or by raising the temperature of the stator and also the temperature of the fluid being pumped. Regardless of the state of wear, the capacity of a helical gear pump operating against elevated discharge pressures is improved by raising the temperature or temperatures as above, whereby to produce a tighter fit between the elements. Various alternative means for raising the temperature or temperatures are disclosed.
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| 235 | Gear pump and heating and cooling means therefor | US3493036D | 1968-06-28 | US3493036A | 1970-02-03 | GOOD ALFRED NELSON; WEED JOSEPH DODSWORTH |
| 236 | Variable volume pump with protection against overheating | US34523864 | 1964-02-17 | US3272138A | 1966-09-13 | CONNOY EUGENE N; HOFFMANN RICHARD W; PARKIN JAMES W; WHITMORE CHARLES H |
| 237 | F stoermer | US3126030D | US3126030A | 1964-03-24 | ||
| 238 | Horizontally Split Screw-Spindle Pump | US16345597 | 2017-10-27 | US20190249662A1 | 2019-08-15 | Thomas Eschner |
| The invention relates to a screw pump (1), in particular a double screw pump, s comprising a multiple-piece housing (2, 7, 15, 21) and at least two coupled rotors (3, 3a) which form chambers with in each case at least one thread-shaped profile (4, 4a) which is configured at least in regions with helical channels (5, 5a) and with dividing walls (6, 6a) which delimit the channels (5, 5a), wherein the rotors (3, 3a) perform an opposed rotor rotation, and the dividing walls (6, 6a) engage into one another in a gearwheel-like manner, a running housing part (7), wherein the running housing part (7) encloses the rotors (3, 3a) without contact, wherein the rotors (3, 3a) form, with the running housing part (7), at least one conveying chamber (8, 8a) for the fluid to be conveyed, wherein the conveying chamber (8, 8a) migrates axially along the rotor axis (10, 10a) and conveys the fluid from a suction chamber (11) into a pressure chamber (12), a suction-side connector element (13) which is connected fluidically to the suction chamber (11), and a pressure-side connector element (14) which is connected fluidically to the pressure chamber (12), wherein the suction-side connector element (13) and the pressure-side connector element (14) are arranged on a connector housing part (15) of the multiple-piece housing (2, 7, 15, 21), wherein the housing (2, 7, 15, 21) has a planar dividing plane (16) which runs parallel to the rotor axes (10, 10a) between the running housing part (7) and the connector housing part (15). | ||||||
| 239 | PUMP DEVICE | US16334778 | 2017-09-25 | US20190234406A1 | 2019-08-01 | Kazuhiro HOMMA; Yosuke ITO |
| A pump device includes a shaft, a motor to rotate the shaft, and a pump driven by the motor via the shaft to discharge oil. The pump device includes a first flow path for oil to connect an interior of the pump and an interior of a housing, a second flow path for oil provided between a stator and a rotor included in the motor, a third flow path for oil disposed outside in a radial direction or inside in the radial direction of the stator and the rotor, and a fourth flow path to cause oil from the second flow path or the third flow path to flow into the pump. | ||||||
| 240 | PUMP DEVICE | US16334775 | 2017-09-25 | US20190234405A1 | 2019-08-01 | Kazuhiro HOMMA; Yosuke ITO |
| A pump device includes a shaft, a motor that rotates the shaft, and a pump driven by the motor through the shaft to discharge oil. The pump device includes a first passage that sucks oil from an intake opening of the motor, a second passage which is provided between a stator and a rotor, and a third passage connected from the second passage to a negative pressure region inside the pump, and the pump discharges oil flowing from the third passage to the pump from the discharge opening. | ||||||
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