| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 121 | Apparatus for indicating remaining life expectancy of a rotary sliding vane pump | US10121126 | 2002-04-11 | US06877966B2 | 2005-04-12 | 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. | ||||||
| 122 | Pump for conveying molten masses of polymers and elastomers | US10349382 | 2003-01-21 | US06824368B2 | 2004-11-30 | Macchi Luigi |
| A pump for conveying molten masses of polymers and/or elastomers comprising a pump body in which are formed an inlet duct for entry of the material, an outlet duct for discharge of the material and a central body communicating with the inlet and outlet ducts and destined to house at least one gear mounted on a motorized shaft for conveying the material from the inlet duct toward the outlet duct. The pump body consists of two parts that can be assembled together, each part of the pump body comprising at least one through hole communicating with the central chamber, so that said at least one shaft of the gear is rotatably supported directly in the pair of opposite facing holes of the two parts of the pump body. | ||||||
| 123 | Liner for fluid pump motor | US10286084 | 2002-11-01 | US20030161740A1 | 2003-08-28 | Robert R. Kimberlin; Robert E. Harvey III |
| An apparatus for protecting a fluid pump motor includes an electric motor for driving a pump head to pressurize a fluid. A liner is positioned in the motor air gap to prevent pressurized fluid from contacting one or more magnetic field producing elements of the stator. The liner includes a thin wall to minimize the air gap distance. The liner wall is made thin enough that, under loading of the pressurized fluid, the liner wall deforms and bears against one or more of the field producing elements of the stator for structural support. The liner is preferably fabricated as a single metal part using a deep drawing process that results in a can having opposed open and closed ends with a substantially uniform cross-section between the open and closed ends of the can. | ||||||
| 124 | Motor pump with balanced motor rotor | US10340930 | 2003-01-13 | US20030160525A1 | 2003-08-28 | Robert R. Kimberlin; Robert E. Harvey, III; William M. Larson; William C. Rawnsley, JR.; Jie Jiang |
| A motor pump is provided in which the motor rotor is optimally force balanced for enhanced operation. The motor pump includes a pump head for pressurizing a fluid, and an electric motor drives the pump head. High pressure fluid is circulated through the motor air gap. The shaft of the motor rotor is axially movable with respect to the pump head such that the motor rotor is effectively floated in high pressure fluid as the fluid flows through the motor. | ||||||
| 125 | Bypass/leakage cooling of electric pump | US10157680 | 2002-05-29 | US20030140900A1 | 2003-07-31 | Mike Dong |
| An in-tank fuel pump for an automotive vehicle includes a pump housing having a pumping element, a low pressure inlet, and a high pressure outlet. A motor housing defining a motor cavity is mounted to the pump housing and a motor is mounted within the motor cavity in driving engagement with the pumping element. A bypass channel is adapted to allow a portion of the fuel flowing through the high pressure outlet to flow into the motor cavity. | ||||||
| 126 | Submerged electric fluid pump | US09977774 | 2001-10-15 | US20030070879A1 | 2003-04-17 | Hal Pringle; Robert D. Keefover; Michael J. Halsig |
| An electric fluid pump for a transmission, transfer case or an oil reservoir. The pump is contained within the transmission, transfer case or engine oil reservoir and has an open housing which allows fluid into the motor for cooling and lubrication. | ||||||
| 127 | Dry vacuum pump | US10001018 | 2001-11-02 | US20020131884A1 | 2002-09-19 | Masaru Mito; Masashi Yoshimura; Masaaki Takahashi |
| In a dry vacuum pump including: a casing having an inner cylinder (1a) communicating with an inlet (6) and an outlet (7) of the pump; shafts (15b) supported by the casing; spiral toothlike parts (15a) formed on the shaft (15b); a plurality of screw rotors (15), each of which includes the shaft (15b) and the spiral toothlike parts (15a) received in the inner cylinder (1a) intermeshing with each other; timing gears (16, 19), each of which is attached to the respective shafts (15b) of the screw rotors (15) and intermeshes with each other; and locking mechanisms (17), each of which for fixing the timing gear (16, 19) to the shaft (15b), both of the shaft (15b) and the toothlike part (15a) made of spheroidal graphite cast iron containing 20 to 30 wt % of nickel are casted integrally. With the construction described above, a problem such that a degree of vacuum deteriorates due to peeling of a resin coating is solved as to a dry vacuum pump pumping corrosive gas. A tapered face of 1/(20L) is formed with respect to the toothlike part (15a) so that an outer diameter of the toothlike part (15a) is shortened from the center of the toothlike part (15a) to the outlet side of the fluid, L being a length of the toothlike part, and a aground finish-surface is formed with respect to the toothlike part (15a) so that a diameter of the toothlike part (15a) is shortened by 3/100 to 4/100 mm from a position, where is about 10 mm offset toward the inlet side from the center of the toothlike part (15a), to the outlet side. With this construction, a seizure of the toothlike part (15a) is prevented from occurring. Nitrogen gas is supplied into the casing and an outlet path (20) connecting the outlet (7) with a scrubber (11) is a straight pipe, in which a silencer is removed. With this construction, heat capacity of the gas discharged from the outlet (7) is increased and reaction products are prevented from depositing in the outlet path (20). | ||||||
| 128 | Driving mechanism for a pump | US09554893 | 2000-06-12 | US06419460B1 | 2002-07-16 | Jorg Dantlgraber |
| The present invention relates to a drive mechanism for a pump (10) implemented by means of a drive motor (20), the rotational speed and torque of which are influenced by a frequency converter (30). The frequency converter (30) is arranged on a heat dissipator (40) confining a flow of the pressure liquid guided to the pump (10). It is advantageous to also arrange the drive motor (20) inside the said heat dissipator (40), for this makes it possible to perform intense forced air cooling of a pump-drive motor system without the necessity of an additional cooling liquid. The drive motor (20) preferably has a central arrangement inside a tubular heat dissipator and is exposed to the pressure liquid over its entire circumference. Baffles or offset connecting sleeves allow for uniform flow through the entire heat dissipator (40). | ||||||
| 129 | Gear pump | US09984999 | 2001-11-01 | US20020051720A1 | 2002-05-02 | Shigehiro Kasai; Shoji Yoshimura; Nobuki Nagami; Kazuo Iritani; Katsunori Takahashi |
| To provide a gear pump for carrying high viscous liquid, which keeps a bearing in a free state and enhances reliability relative to a leakage of cooling medium and a leakage of molten resins. The gear pump in which a pair of gear rotors 2 are supported on a body 1 of the gear pump through a bearing 6, a cover for preventing the bearing 6 from being slipped out is secured to the body 1, and a temperature adjusting medium passage 20 is formed in the bearing 6, wherein an inlet pipe 28 and an outlet pipe 29 to the temperature adjusting medium passage 20 are connected to the axial outer end of the bearing 6, an intermediate plate 10 is interposed between the axial outer end of the bearing 6 and the cover 11, the intermediate plate 10 being provided with an insert hole 31 for the inlet pipe 28 and the outlet pipe 29, the cover 11 being provided with a guide portion 32 having the inlet pipe 28 and the outlet pipe 29 loosely fitted therein to guide them to outside. Further, at least a part of the inlet pipe 28 and the outlet pipe 29 is formed from a flexible member. | ||||||
| 130 | Apparatus and method for plasticization and extrusion employing an orbital scroll | US245870 | 1999-02-08 | US6146575A | 2000-11-14 | David Robert Huston |
| An extruder for plasticizing and extruding a material. The extruder is formed from two interfitted orbital scroll members. Material, usually in a solid state, can be fed between the scroll members. As the scroll members are rotated eccentrically with respect to one another, the material is conveyed toward the center of the scroll members within a pocket of ever decreasing volume. This applies shear energy to the material which causes melting. Heaters can be provided in the scroll members to further aid and control the melting. By the time the material reaches the central output, it is in a molten state and can be extruded through an output. A method for extruding, and an injection molding machine using such an extruder to plasticize plastic resin, such as PET, is also described. | ||||||
| 131 | Gear pump channel arrangement for tempering media | US795801 | 1997-02-05 | US5924854A | 1999-07-20 | Peter Blume; Roger Stehr |
| In order to cool the slide bearing area for the slidable bearing of a gear pump shaft, a slide bearing bush with a slide bearing area and, in the case of the guiding-through of a shaft, a sealing area extends in one piece integrally to the outside, and a cooling-medium guiding system provided in the bush is connected from the outside. This eliminates all sealing problems for the cooling medium feeding to the slide bearing area. | ||||||
| 132 | Rotary pump with a thermally conductive housing | US669366 | 1996-09-19 | US5810568A | 1998-09-22 | Kevin John 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. | ||||||
| 133 | Pump assembly | US436170 | 1995-05-09 | US5725362A | 1998-03-10 | Lawrence P. Zepp; Robert J. Loubier |
| A pump assembly which includes a prop head which is driven by a rotor that is located in a housing to which the pump head is attached. The pump head includes a drive gear and a driven gear. The drive gear is coupled to the rotor by a shaft which is received at opposite ends by a bearing located in a closed end of the rotor housing and a bearing which is located in the pump head. | ||||||
| 134 | Method for cooling the shaft of a gear pump rotor, a gear pump rotor, and a gear pump comprising such a rotor | US390018 | 1995-02-17 | US5468131A | 1995-11-21 | Peter Blume; Roger Stehr |
| A gear pump rotor assembly is disclosed. In order to prevent that the gear toothing is cooled in an unreliable manner, radial heat flow is reduced in the toothing area of the shaft, preferably by means of an insulation air chamber or other insulated section, with respect to the heat flow in other shaft areas to be cooled. | ||||||
| 135 | Cooling arrangement for magnetic couplings in pumps | US12523 | 1993-02-02 | US5322421A | 1994-06-21 | Bent Hansen |
| A gear pump which is fitted with a magnetic coupling (6) to ensure against leaks uses circulation of the pump fluid to cool the magnetic coupling. The circulation is established by supplying the pump rotor (4) with radial channels (24) which terminate in recesses on the periphery of the rotor and which are connected to an axial channel (26) in the rotor shaft leading to the end of the shaft which is nearest the magnetic coupling. The fluid which is drawn through the channels (24) is mixed with the main stream of fluid in a section which is cut out of the wall of the pump chamber (16), and fresh cooling fluid is drawn via the chamber (40) to the radial gap in the magnetic coupling. | ||||||
| 136 | Electric motor driven hydraulic apparatus with an integrated pump | US787670 | 1991-11-04 | US5320501A | 1994-06-14 | Otto P. Langosch; Albin J. Niemiec; Ronald B. Schweiger |
| An electric motor driven inline hydraulic apparatus comprising a housing having end members closing said housing, an electric motor stator mounted in said housing, an electric motor rotor, a shaft on which the rotor is mounted is journalled in the housing and a pump is integrally formed on one or both of the end members. The shaft extends through an opening in the end member and is connected to the rotating group of the pump. Hydraulic fluid is supplied to the interior of the electric motor housing and flows through passages in the housing to the intake of the pump integral with the end member. The end member associated with the pump is formed with an enlarged chamber adjacent the inlet of the pump which functions to reduce the flow velocity and separate the contained air from the hydraulic fluid thereby reducing the operating sound level of the pump. | ||||||
| 137 | Electric-motor in-line integrated hydraulic pump | US982729 | 1992-11-27 | US5261796A | 1993-11-16 | Albin J. Niemiec; James V. Bloomquist; William E. Sargo |
| An integrated in-line electric motor/hydraulic pump that includes a pump housing having a pair of end members mounted at opposed ends of the housing. An electric motor includes a rotor on a shaft journalled between the end members and a stator surrounding the rotor within the housing. A pump inlet opens into the interior of the housing. First and second vane pump cartridges are integrated into one of the end members. Each vane pump cartridge includes a rotor coupled to the shaft, and a plurality of vane carried by the rotor to engage a vane cam ring that surrounds the rotor, which defines at least one pumping cavity between the cam ring and the rotor. A vane pump inlet passage within the one end member extends between and operatively couples the housing interior to the pumping cavities of both the first and second vane pump cartridges for feeding fluid from the housing interior to both cartridges in parallel. A vane pump discharge is also carried by the one end member and operatively coupled to both of the pumping cavities in parallel. | ||||||
| 138 | Electric motor driven inline hydraulic apparatus | US687173 | 1991-04-18 | US5181837A | 1993-01-26 | Albin J. Niemiec |
| An electric motor driven inline hydraulic apparatus comprising a housing having end plates closing said housing, an electric motor stator mounted in said housing, an electric motor rotor, a shaft on which the rotor is mounted is journalled in the housing and a vane type pump mounted on one of the end plates. The shaft extends through an opening in the end plate and is connected to the vane rotor of the pump. Hydraulic fluid is supplied to the interior of the electric motor housing and flows through passages in the housing to the intake of the vane pump on the end plate. In one form, the vane pump delivers fluid through an outlet in the end plate on which it is mounted. In another form, the vane pump delivers fluid through an outlet in the pump housing. | ||||||
| 139 | Hydraulic power system | US3487431D | 1968-06-24 | US3487431A | 1969-12-30 | FORKNER ROBERT R |
| 140 | Fluid pump | US68378557 | 1957-09-13 | US2938468A | 1960-05-31 | KECECIOGLU DIMITRI B; WEBER ROBERT A; NORBERT KIEFER |
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