| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 181 | Suction housing for rotor/stator pump | US10690057 | 2003-10-21 | US06926492B2 | 2005-08-09 | Donald C. Hegebarth |
| A pump of the rotor/stator type for wet cementitious material includes a suction housing for receiving and directing the material into a rotor/stator combination for delivery to the location of use. The suction housing is in the form of a rectangular closed structure having a material receiving flange and enclosing coupling between a drive shaft and an end of a rotor. The housing includes top, bottom and side panels, one of which includes the aforementioned material receiving flange. Each of the panels is easily removed from the suction housing to facilitate cleaning and removal of material residue after use, as well as maintenance and repair of the pump. Cementitious material may be introduced through either the top, bottom or either of the side panels by appropriate positioning of the material receiving flange. The pump further includes a lubricant reservoir for lubricating the drive shaft to extend pump operating lifetime. | ||||||
| 182 | Gear motor start up control | US10659704 | 2003-09-11 | US06902382B2 | 2005-06-07 | Matthew Peter Christensen; Larry Anderson; George Kadlicko |
| A hydraulic motor comprising a housing having a fluid inlet. A fluid outlet and a cavity there between, a pair of intermeshing gear elements rotatable in the housing about mutually parallel axes. Each of the gear elements having a set of gear teeth disposed about the periphery of the element and a support shaft extending from oppositely directed end faces of the set of gear teeth. A bearing assembly located on opposite sides of the cavity in said housing to support the shafts for rotation about respective ones of the axes. Each of the bearing assemblies having a sealing face overlying the end faces and biased into engage with the end faced by a pressure compensating seal located between the bearing and the housing. The sealing face having a channel extending partially about the spindle and in fluid communication with the inlet to introduce fluid under pressure between the faces. | ||||||
| 183 | SUCTION HOUSING FOR ROTOR/STATOR PUMP | US10690057 | 2003-10-21 | US20050084366A1 | 2005-04-21 | Donald Hegebarth |
| A pump of the rotor/stator type for wet cementitious material includes a suction housing for receiving and directing the material into a rotor/stator combination for delivery to the location of use. The suction housing is in the form of a rectangular closed structure having a material receiving flange and enclosing coupling between a drive shaft and an end of a rotor. The housing includes top, bottom and side panels, one of which includes the aforementioned material receiving flange. Each of the panels is easily removed from the suction housing to facilitate cleaning and removal of material residue after use, as well as maintenance and repair of the pump. Cementitious material may be introduced through either the top, bottom or either of the side panels by appropriate positioning of the material receiving flange. The pump further includes a lubricant reservoir for lubricating the drive shaft to extend pump operating lifetime. | ||||||
| 184 | Gear pump having bearings with cooling ducts | US10297789 | 2002-12-09 | US06761546B2 | 2004-07-13 | Edgar R. Schlipf; Peter Heidemeyer; Rainer Herter |
| A gear pump comprises a casing and gear rotors disposed therein. The gear rotors are lodged in bearing sections of plain bearings that are lubricated by the pumping medium. They have at least one cooling duct 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. | ||||||
| 185 | Feed pump for fluidic media | US10472426 | 2003-09-18 | US20040109780A1 | 2004-06-10 | Georg Gillert; Dirk Henningsen |
| The invention relates to a feed pump for fluidic media, comprising a displacement body that is mounted in a pump housing and equipped with slide bearings and connecting channels that connect the slide bearings to the produce channel on the suction side for recirculating the fed medium that lubricates the slide bearings. The connecting channels are linked to control channels that lead to the exterior and guide channels are provided in the extension of the connecting channels in the housing of the cover. Said guide channels accommodate the valve plungers, each of which has a constriction. The section of the valve plunger lying adjacent to the product channel has a length and a diameter, which correspond to the length and diameter of the connecting channel. | ||||||
| 186 | Hydraulic motor | US10174593 | 2002-06-19 | US06699024B2 | 2004-03-02 | 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 “dry bolt” 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. | ||||||
| 187 | Rotary pump | US10043704 | 2002-01-09 | US06619939B2 | 2003-09-16 | Umeo Inoue; Satoshi Shibata; Hiroyuki Kishida |
| A rotary pump including: a casing having a circular inner circumferential surface, a rotor rotating about a center of the inner circumferential surface of the casing, a partition plate installed so as to be movable in and out of the casing so that a tip end of the partition plate comes into contact with an outer circumferential surface of the rotor, a spring which drives the partition plate so that the partition plate is in constant contact with the rotor, and an intake port and a discharge port formed in the casing so as to be positioned after and before the partition plate with respect to the direction of rotation of the rotor; and the partition plate is formed with a communicating portion that communicates between the intake port side and the discharge port side. | ||||||
| 188 | Dry screw vaccum pump having nitrogen injection | US10001018 | 2001-11-02 | US06554593B2 | 2003-04-29 | Masaru Mito; Masashi Yoshimura; Masaaki Takahashi |
| A dry vacuum pump assembly that includes a casting having an inner chamber, an inlet and an outlet communicating with the inner chamber, a pair of right and left handed screw rotors positioned in the casing, each screw rotor having a cross section formed by a Quimby curve, a circular arc, and a quasi-Archimedean spiral curve, the pair of screw rotors intermeshing with each other to pump a process gas pumped from the inlet to the outlet. The pump assembly further includes a nitrogen-supplying tube that communicates with the inner chamber at a position near the outlet in the casing, and an external pipe that connects the outlet to a scrubber or a trap which external pipe is straight and does not include a silencer. | ||||||
| 189 | Fluid transfer machine with drive shaft lubrication and cooling | US10160835 | 2002-05-31 | US20030059329A1 | 2003-03-27 | Robert E. Oehman JR.; William Power |
| A fluid transfer machine includes a positive displacement, rotary-type pumping mechanism. The pumping mechanism is driven by a drive shaft. The drive shaft is lubricated and cooled by locating the drive shaft in the primary flow path through the machine. The primary flow is directed from the inlet through a passage that intersects the drive shaft, at a location between a pair of journal bearings or sleeves. The fluid then continues directly to the suction side of the pumping mechanism. The drive shaft could also be located on the pressure side of the pumping mechanism. The primary flow cools and lubricates the drive shaft (and drive shaft bearings), and reduces the size and complexity of the machine, as additional cooling and lubrication flow passage(s) are not necessary. | ||||||
| 190 | Gear pump having a bearing with a temperature adjusting medium passage | US09984999 | 2001-11-01 | US06524088B2 | 2003-02-25 | 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. | ||||||
| 191 | Bi-directional low maintenance vane pump | US09354619 | 1999-07-15 | US06503064B1 | 2003-01-07 | Steven B. Croke; Scott P. Shafer |
| A long-life, low maintenance, bi-directional vane-type water pump has a high degree of symmetry and operates with equal efficiency in either direction. The axial position of the drive shaft is controlled to permit improved lubrication by the pumping fluid of component parts on which the drive shaft is journaled. | ||||||
| 192 | Dry screw vacuum pump having spheroidal graphite cast iron rotors | US09646996 | 2000-09-22 | US06371744B1 | 2002-04-16 | Masaru Mito; Masashi Yoshimura; Masaaki Takahashi |
| A dry vacuum pump that includes a casting having an inner cylinder communicating with an inlet and an outlet of the pump, shafts supported by the casting, spiral toothed parts formed on the shaft a plurality of screw rotors each of which includes the shaft and the spiral toothed parts received in the inner cylinder intermeshing with each other. Timing gears each of which are attached to the respective shafts of the screw rotors that intermesh with each other. Locking mechanisms for fixing the timing gears to the shaft. Both of the shaft and the toothed part are made of spheroidal graphite cast iron containing 20 to 30 wt % of nickel are cast integrally. | ||||||
| 193 | Grooved rotor for an internal gear pump | US295947 | 1999-04-21 | US6158994A | 2000-12-12 | Michael K. Mulcahy |
| A rotor for an internal gear pump adapted to improve the lubrication of the internal gear parts. A radial groove is added to the inner face of an internal rotor. The groove extends radially between the center of the rotor and an outer diameter of the rotor. The groove provides a communication channel between the outer circumference of the rotor and the parts located within the rotor's inner diameter, namely the idler gear and idler pin. The disclosed grooved rotor improves the flow of fluid to the interface between the idler gear and the idler pin of a typical internal gear pump. Should the lubricating properties of the fluid be reduced and/or the operating pressures of the pump increased, the improved rotor design will provide lubrication of the internal rotary parts, thereby decreasing the friction among the parts and extending the overall productive life of the pump. | ||||||
| 194 | Slide bearing, particularly for a gear pump | US941227 | 1997-09-30 | US5951171A | 1999-09-14 | Peter Blume; Gregor Seekirchner |
| A slide bearing for a gear pump or the like has a lubrication groove provided in the surface of the cylinder forming the slide bearing. The lubrication groove is constructed to be ending flatly in the area of that edge which, with respect to the shaft rotating direction acts as an inlet edge into the slot between the slide bearing and the shaft. Thus, it is achieved that the slide bearing is sufficiently lubricated also by fluid which flows at a higher viscosity and has an unknown elastic performance. | ||||||
| 195 | Lubrication fluid circulation using a piston valve pump with bi-directional flow | US310778 | 1989-02-14 | US4940401A | 1990-07-10 | Hollis N. White, Jr. |
| A lubrication system for the main drive connection of a gerotor device, the lubrication system having a pressure operated piston valve connected directly off of the gerotor cells of the device for bi-directional circulation of fluid therethrough. | ||||||
| 196 | Lubrication of gear pump trunnions | US389625 | 1989-08-03 | US4927343A | 1990-05-22 | Kenneth F. Lonsberry |
| A thrust plate for a gear pump or motor which permits the use of high pressure fluid from the outlet side thereof to lubricate the trunnions and bushings therein. The thrust plates include two small bores which pass therethrough the which are in fluidic communication with the inlet side of the pump via the surface of the thrust plate that confronts the gears within the pump. The foregoing bores are also in fluidic communication with the bushings by means of associated slots in the opposite side of the thrust plate. The opposite ends of the bushings are in fluidic communication with fluid at atmospheric pressure. By minimizing the size of the foregoing bores and by allowing the passage of fluid through same to the inlet side of the pump via the gear tooth confronting surface of the thrust plate, pressure gradients are created across the trunnions and their associated bushings. These pressure gradients permit high pressure fluid to traverse outwardly from the thrust plate along the surface of the trunnions to the approximate end thereof to lubricate same and then to move inwardly along the trunnions toward the thrust plate and to pass therethrough via the bores therein. | ||||||
| 197 | Gear pumps | US811173 | 1985-12-18 | US4725211A | 1988-02-16 | William G. Gray |
| To avoid areas of slow moving or stagnant polymer in a gear pump feeding from an extruder to a die, the inlet port (7) has its cross-section changing progressively from that of the outlet (10) of the extruder to a slot section (11) at the demeshing region of the gear teeth, the slot section having a breadth at least equal to the breadth of the gears (3, 4) and a height between one and four times the gear teeth height, and the outlet port (8) preferably changes progressively from a similar slot section (16) at the meshing region of the gear teeth to the cross-section of the inlet (17) of the die. | ||||||
| 198 | Wet motor fuel pump with fuel flow through the bearing for cooling thereof | US603611 | 1984-04-25 | US4580951A | 1986-04-08 | William A. Carleton; James R. Locker; Harry W. Moore, III; David L. Williams |
| A wet motor pump has an armature located in a motor chamber. A shaft bushing with an internal bore rotatably supporting a shaft end portion of an armature shaft is located in an outlet housing having a bore and a bushing support for receiving the shaft bushing. The bushing, end portion of the armature shaft, the internal bore as well as an end wall passage of the outlet housing structure defines an end chamber wherein are provided an end chamber inlet passage and an end chamber outlet passage for communicating the end wall passage and the wet motor chamber. A pressure differential structure establishes a pressure differential between the end chamber inlet passage and the end chamber outlet passage, to cause a fluid flow into the end chamber inlet passage, to cool and lubricate the shaft bushing, and therefrom out of the end chamber outlet passage forming a cooling and lubrication system. | ||||||
| 199 | Oil lubricated main drive shaft for fuel pump | US468066 | 1983-02-22 | US4493623A | 1985-01-15 | James C. Nelson |
| A drive shaft (26) of a gear type fuel pump (2) forms a driving interconnection between an engine gearbox (4) and a shaft (14) which carries the driving gear (10) of the fuel pump. The drive shaft has a slightly diverging lubricant supply passage (65) which receives lubricant from an oil jet (70) in the engine gearbox and directs the lubricant to the engaged splines (44, 46) at the inboard end of the drive shaft. Lubricant from the area of spline engagement is returned to the gearbox via radial passage (78), annular lubricant return passage (68) and radial passage (80). O-ring seals (82, 84) on the drive shaft, which straddle a drain passage (86) prevent the mixing of the lubricant and the fuel which may envelop an intermediate portion of the drive shaft. Wear of the engaged, oil lubricated splines (40, 42) at the outboard end of the drive shaft should provide a general indication of spline wear at the inboard end of the drive shaft because both ends are exposed to similar lubrication. | ||||||
| 200 | Gear pump or motor with bearing passage for shaft lubrication | US197471 | 1980-10-16 | US4395207A | 1983-07-26 | Erkki Manttari; Matti Korpinen |
| Gear pump and motor apparatus adapted to operate both as a pump and as a motor include two meshing gears whose shafts are supported in a housing chamber by respective bearing sleeves whose end faces sealingly engage the end faces of the respective gears. An oil supply passage is formed in each of the bearing sleeves in a region diametrically opposed to flat surface portions formed on the outer peripheral surface of the bearing sleeves and near a central plane which passes through the axes of cylindrical chamber portions in which the gears are situated. Oil leaking from the pump/motor chamber is directed into spaces defined between the peripheral surfaces of the bearing sleeves and the respective chamber portions through the oil supply passages into the bearing sleeve openings to lubricate the gear shafts which are received therein. The ratio of the length to the diameter of each of the oil supply passages is less than or equal to about 10. | ||||||
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