| 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 | Variable volume type vane pump | JP14287583 | 1983-08-04 | JPS6035192A | 1985-02-22 | KIYOSHIGE SATOSHI; FUJIKAWA TADASHI; EGUCHI SHINSUKE |
| PURPOSE: To prevent twisting of a cam ring, by a method wherein a groove, which is positioned at the outer end part of a suction port, partitioned from a suction port, and communicated to a discharge port, is provided in the one side of the cam ring. CONSTITUTION: A circular groove 100, positioned at the outer peripheral part of a suction port and partitioned by the suction port 19, is provided in the one side of a cam ring 13, and the groove 100 is communicated with a discharge port 18. The cam ring 13 is pressed against the discharge port 18 side by means of a pressure in the discharge port 18, but the end part of the suction port 19 side is pressed by a discharge pressure guided through the groove 100. This enables prevention of twisting of the cam ring 13. COPYRIGHT: (C)1985,JPO&Japio | ||||||
| 222 | Adsorption heat pump | JP14541182 | 1982-08-21 | JPS5891381A | 1983-05-31 | ERUHARUTO BUNDERURIHI |
| A sorption heat pump with absorber provided in a solvent circuit as well as, inserted between the latter and an expeller, a solvent pump which is actuated by a drive, is to be improved in such a manner that the solvent circuit can be guided free of disturbance. To this end, the drive shaft of a pump element with suction space is connected to the shaft of the drive designed as a canned motor with rotor space to form a glandless pump aggregate, and preferably in one piece therewith in the form of a motor pump shaft, the rotor space being separated from the delivery pressure of the pump element by connection to the suction space. | ||||||
| 223 | Driving shaft of gear pump | JP13002681 | 1981-08-18 | JPS5830492A | 1983-02-22 | OHARA NAOYUKI |
| PURPOSE:To reduce the thrust force by forming a hollow path passing inside the shaft from the end section of a driving shaft to the front section of oil seal fitted along the driving shaft to prevent oil leakage so as to balance the liquid pressures applied to both side faces of the driving gear. CONSTITUTION:The liquid leaking through the gap between the side face of a driving gear 34 and a side plate 44 flow from the high pressure side (discharge path 48) to the low pressure side (suction path 46) and also reach the front face of an oil seal 54 through a hollow section 62 provided inside the driving shaft 34, and further return to the suction path 46 through a guide port 60. Accordingly, the liquid pressure in the hollow section 62 is made almost equal to the pressure in the suction path 46, and the cross section area of the side face of the driving gear 34 in the hollow section 62 is made equal to that of a driving shaft 32, therefore the liquid pressures applied to both side faces of the driving gear 34 are almost balance, thus generating no thrust force. Thereby, the thrust force applied to the driving gear 34 can be suppressed with small number of parts being used. | ||||||
| 224 | JPS5734473B2 - | JP12186174 | 1974-10-22 | JPS5734473B2 | 1982-07-23 | |
| 225 | High pressure pump | JP7238281 | 1981-05-15 | JPS5716289A | 1982-01-27 | YOHAN MERUTSU |
| 226 | Pressure gradually controlling for rotary fluid machine | JP15130580 | 1980-10-28 | JPS5675990A | 1981-06-23 | CHIYAARUSU JIYON BOUDEN |
| 227 | Hydraulic motor | JP16910979 | 1979-12-25 | JPS55148977A | 1980-11-19 | RAMON PAREJIYA |
| 228 | Scroll hydraulic machine | JP4307779 | 1979-04-11 | JPS55137384A | 1980-10-27 | TOUJIYOU KENJI; IKEGAWA MASATO; SHIIBAYASHI MASAO; IMAI MASAYA |
| PURPOSE: To reduce friction loss between sliding faces of a fixed scroll and spinning scroll and keep contact of both two mirror boards and laps by indenting the sliding face of both scrolls to cancel the biased pressing force. CONSTITUTION: Lubricating oil deposed on the bottom of a chamber 30, pumped up through an eccentric orifice 32 when a crankshaft 17 rotates, is intermittently supplied in turn into each of cavities 13aW13d formed in a mirror board 1 of a fixed scrll 3 via each of oil conduits 29aW29d and lubrication holes 10aW10d shaped in a spinning scroll 6. Oil pressures as much as biased pressing forces created in those cavities to concel forces, which may reduce friction loss between sliding faces of both scrolls 3, 6 and provide smooth sliding of each two mirror boards 1, 4 and laps 2, 5. COPYRIGHT: (C)1980,JPO&Japio | ||||||
| 229 | Screwwtype hydraulic machines | JP12338877 | 1977-10-14 | JPS5349307A | 1978-05-04 | RARUSU SEGERUSUTOREMU |
| 230 | Screw pumps | JP4760676 | 1976-04-26 | JPS51134402A | 1976-11-20 | ARUNE ROENNEBURINGU |
| 231 | Hagurumahonpu | JP12863674 | 1974-11-08 | JPS5155004A | 1976-05-14 | MORIZAKI NOBUKAZU |
| 232 | JPS5021685B1 - | JP2992968 | 1968-05-06 | JPS5021685B1 | 1975-07-24 | |
| 233 | JPS4949123B1 - | JP9106869 | 1969-11-13 | JPS4949123B1 | 1974-12-25 | |
| 234 | JPS4997905A - | JP3374 | 1974-01-05 | JPS4997905A | 1974-09-17 | |
| 235 | Miniature high pressure pump and electrical hydraulic actuation system | US14912758 | 2014-08-19 | US10138908B2 | 2018-11-27 | Andrea Vacca; Gabriele Altare |
| Methods and apparatus pertaining to positive displacement pumps, and further to hydraulic actuation systems. In some embodiments the pumps are gear pumps with bi-directional operation. In some embodiments the actuation system includes a motor-driven, reversible operation gear pump providing fluid under pressure to a rod and cylinder. | ||||||
| 236 | Pump provided with a system for compensating the internal pressure | US15267333 | 2016-09-16 | US10113547B2 | 2018-10-30 | Diego Andreis |
| A pump (10) comprising a casing (12) that encloses a pumping group (14). On the casing (12) at least one inlet conduit (F) and at least one outlet conduit are obtained. The pumping group (14) comprises a pair of mutually coupled gears defining a pump chamber. A first support shaft (16) is operatively connected to an actuator assembly (18) so that the first gear can operate as a driving gear to set the second gear in rotation. The pump (10) comprises at least one element (20) for compensating the increase in volume of the fluid (F) and/or the increase in the pressures inside such a pump (10). The element (20) for compensating the pressure/volume is at least partially manufactured from a shape memory metal alloy having superelastic properties. | ||||||
| 237 | Vane pump device | US15247550 | 2016-08-25 | US10047744B2 | 2018-08-14 | 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. | ||||||
| 238 | SCREW PUMP | US15749812 | 2016-06-29 | US20180216614A1 | 2018-08-02 | Yusuke HONGO; Masahiro OKAJIMA; Masashi INOUE; Yasuhiro TAKEUCHI; Haruo KAMIYA |
| A screw pump pumps a fluid from an inlet port to a discharge port by rotating one drive screw and at least one driven screw which mesh with each other and includes the drive screw being rotatable about a drive rotation shaft, the driven screw to be driven by the drive screw and being rotatable about a driven rotation shaft, a drive journal provided coaxially with the drive screw and to rotate integrally with the drive screw, a driven journal provided coaxially with the driven screw and to rotate integrally with the driven screw while making contact with the drive journal along a contact line between the drive rotation shaft and the driven rotation shaft, a case including a cylinder that receives the drive screw and the driven screw, and a bearing member to rotatably support the drive journal and the driven journal. | ||||||
| 239 | GEAR PUMP | US15745488 | 2015-05-18 | US20180209416A1 | 2018-07-26 | Makoto Araki; Hirotada Yoshitani |
| A gear pump according to the present invention is configured such that a first pump chamber comprises a first intake space into which a fluid is taken in and a first discharge space from which the fluid is discharged, in accordance with rotation of an internal gear and external gears, a second pump chamber comprises a second intake space into which the fluid is taken in and a second discharge space from which the fluid is discharged, in accordance with rotation of the internal gear and the external gears, the first intake space and the second intake space are provided to be symmetrical about a rotational center of the internal gear, and the first discharge space and the second discharge space are provided to be symmetrical about the rotational center of the internal gear. | ||||||
| 240 | Fuel pump | US15153951 | 2016-05-13 | US10024318B2 | 2018-07-17 | Hiromi Sakai; Daiji Furuhashi |
| A fuel pump includes rotors that rotate, a pump housing that defines a rotor housing chamber that rotatably houses the rotors, and an outer circumferential side housing that includes a cylindrical portion formed in a cylindrical shape that surrounds the pump housing from an outer circumferential side and a narrowing potion having that narrows down with respect to the cylindrical portion. The fuel pump sucks fuel into the rotor housing chamber and then discharges the fuel due to the rotor rotating. A pump cover of the pump housing includes an inlet port that sucks fuel into the rotor housing chamber, and a sliding surface portion on which the rotors slide. An outer circumferential portion of the pump cover includes a joining portion joined to the narrowing portion, and a recessed portion that is recessed adjacent to the joining portion, the recessed portion allowing the outer circumferential portion to elastically deform. | ||||||
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