| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 741 | JPH0134305B2 - | JP16448480 | 1980-11-20 | JPH0134305B2 | 1989-07-18 | KENESU JON IFUIIRUDO; RICHAADO JOZEFU IFUIIRUDO |
| 742 | Piston-type fluid machine | JP22295987 | 1987-09-08 | JPS6466474A | 1989-03-13 | KAYANO SHUJI; NAKAMURA ICHIRO |
| PURPOSE:To obtain high efficiency of the captioned machine for super high pressure fluid as well by forming an annular space at the part except for the inner peripheral surface of a cylinder, which is situated on the opposite side of the piston-inserting-side, together with applying discharge pressure to this space. CONSTITUTION:A cylinder block 5 is firmly held by a casing 12 of a pump, while a plurality of cylinders 1 are inserted in this block 5. A piston 2 is inserted into the cylinder 1 in such a manner that the piston 2 slides freely. An annular space 14 is formed at the part except for the inner peripheral surface of the end surface of the cylinder, which is situated on the opposite side of the piston-inserting-side (fluid chamber side 9). The space 14 has a depth lin the axial direction of the piston 2 and is concentric with the inner peripheral surface of the cylinder. The diameter d of the annular space is formed on the outer peripheral side of the position of both a suction check valve 3 and a discharge check valve 4. Since a connecting passage 15, which acts the same pressure as that in the fluid chamber 9 on this space 14, is formed, the gap between the piston 2 and the cylinder 1 can be made small, while the amount of leak can largely be reduced. | ||||||
| 743 | Axial piston machine with piston formed as stepped piston | JP18015088 | 1988-07-19 | JPS6441677A | 1989-02-13 | RUDOBIGU BAAGENSAIRU |
| PURPOSE: To reduce the loading of a sliding bearing by providing a hydrostatic bearing disposed on a flat sliding surface between a cam plate and a slipper housing a piston head, with two pressure pockets and enabling respective pressure pocket to receive pressurized liquid from two independent passages. CONSTITUTION: Into a plurality of piston bores 11 formed in a cylinder 9 to be integral with a drive shaft 8, a stepped piston 12 is fitted free to slide. For each piston 12, its spherical piston head 32 is mounted rotatably within the socket 33 of a slipper 34. As for the slipper 34, its flat sliding surface 35 is in sliding contact with a sliding ring 38 having an anti-friction property supported by a cam plate 37. In this instance, between the sliding surface 35 of the slipper 34 and the cam plate 37, hydrostatic bearings 49, 51 are disposed and the pressure pockets formed in the recesses 54, 55 are coupled to cylinders 27, 29 by way of passages 52, 53. Furthermore, each of the passages 52, 53 is formed in a doubled inner and outer structure by way of a sleeve 61 inserted into a central hole 62 of the piston 12. | ||||||
| 744 | Fixed-quantity suction pump for high-performance liquid chromatography | JP3001388 | 1988-02-10 | JPS63309783A | 1988-12-16 | BENJIYAMIN HISUKOTSUKU |
| 745 | Axial piston type fluid machine | JP16010185 | 1985-07-22 | JPS6223578A | 1987-01-31 | MORITA SEIJI |
| PURPOSE: To enhance the control ability of an axial piston type fluid machine, by acting the pressure of working fluid upon the rear section of a swash plate to cancel out a tilting torque acting upon the swash plate and based upon the pressure of working fluid in a cylinder chamber so that a control torque is reduced. CONSTITUTION: Two fluid actuators 27a, 27b are formed in a front plate 7c in an axial piston type fluid machine. Plungers 28a, 28b in the fluid actuators are made to abut at their ends against the tip dead center side and bottom dead center side a convex spherical surface 5b of the rear section of a swash plate 5, after piercing through a cam holder 23. Further, these fluid actuators 27a, 27b are communicated with the discharge and suction ports 16, 23 of the fluid machine through passages 29a, 29b. COPYRIGHT: (C)1987,JPO&Japio | ||||||
| 746 | JPS61188027U - | JP7217885 | 1985-05-17 | JPS61188027U | 1986-11-22 | |
| 747 | Pump device | JP10396486 | 1986-05-08 | JPS61255280A | 1986-11-12 | ADORIAAN FUAN TSUUIIDEN |
| 748 | JPS61125683U - | JP808285 | 1985-01-25 | JPS61125683U | 1986-08-07 | |
| 749 | Swash plate type hydraulic device | JP23996784 | 1984-11-14 | JPS61118566A | 1986-06-05 | YAMAGUCHI KOJI; KAWAHARA EIICHIROU; YAMAMOTO NOBORU |
| PURPOSE: To assure smooth relative sliding between a swash plate and a shoe by providing a lubricant chamber on the swash plate, said lubricant chamber maintaining lubricant surrounding a sliding part between the swash plate and the shoe. CONSTITUTION: A cylindrical partition wall member 24 opposing, at a small gap, to the inner peripheral surface of a retainer plate 17 is mounted on an inner peripheral surface of a swash plate holder 8. A lubricant chamber 25 surrounding a sliding part between a shoe 16 and a swash plate 6 is partitioned by a partition wall member 24, a swash plate holder 8, and the retainer plate 17. Hereby, pressure oil contained in each hydraulic pocket 21 leaks without interruption and flows into the lubricant chamber 25, whereby the sliding surface between the shoe 16 and the swash plate 6 can securely by lubricated from the outside. COPYRIGHT: (C)1986,JPO&Japio | ||||||
| 750 | Axial piston pump | JP7550185 | 1985-04-11 | JPS6198977A | 1986-05-17 | RUUTOBUIHI MOKESHIYU; PEETAA MOKESHIYU |
| 751 | Fluid pressure rotary machine | JP18467684 | 1984-09-05 | JPS6165080A | 1986-04-03 | OCHIAI MASAMI; KANAI TAKASHI; OSHINA MORIO |
| PURPOSE: To press a pressing plate and prevent leaking from a part between a valve plate and the pressing plate, by providing a large contoured recess in a position corresponding to a cylinder while an auxiliary piston in this recess in the end part of a cylinder block. CONSTITUTION: A cylinder block 4 is fixed to a rotary shaft 2. This cylinder block 4 provides a plurality of cylinders 5. The cylinder block 4 forms in its end part, corresponding to said cylinder 5, a recess 21 of larger contour than the cylinder 5. This recess 21 arranges inside a cylindrical auxiliary piston 25. This auxiliary piston 25 is pressed to the side of a pressing plate 22 by a spring 29. Further this auxiliary piston 25, on which the pressure of fluid in the cylinder 5 acts, is arranged so as to more press the pressing plate 22. COPYRIGHT: (C)1986,JPO&Japio | ||||||
| 752 | Pump | JP12454883 | 1983-07-08 | JPS6019970A | 1985-02-01 | HAINTSU BARARU |
| 753 | JPS5941032B2 - | JP12892076 | 1976-10-27 | JPS5941032B2 | 1984-10-04 | NISHIMOTO EIJI |
| 754 | Liquid pressure rotary machine with swash plate | JP1714983 | 1983-02-04 | JPS59145374A | 1984-08-20 | OOSHINA MORIO; KANAI TAKASHI; OCHIAI MASAMI |
| PURPOSE:To have smooth motion of oscillative swinging, by holding a sliding member and a detent member pinched between a swash plate and a pushing member while such a condition is held that the piston is fitted between said sliding member and detent member. CONSTITUTION:A shoe 21 consisting of a sliding member 22 and a detent member 23 is installed pinched between a swash plate 6 and a pushing member 6, with such a condition held that a piston 27 is coupled with this shoe 21. This sliding member 22 is situated on swash plate side, and its end face is in sliding contact with said swash plate 5. The detent member 23 is situated on the pushing member side, and its end face situated on the side for piston insertion is in contact with the pushing member 6, so that the motion of oscillative swinging will be made smoothly. | ||||||
| 755 | JPS5964437U - | JP16044882 | 1982-10-22 | JPS5964437U | 1984-04-27 | |
| 756 | Swash plate type hydraulic pressure rotary machine | JP6297682 | 1982-04-15 | JPS58192981A | 1983-11-10 | OOSHINA MORIO; KANAI TAKASHI; OCHIAI MASAMI |
| PURPOSE:To reduce a transversal load on a sliding surface between a piston and a cylinder to prevent generation of abnormal abrasion by a method wherein the pressure angle of the sliding surface between the swash plate and a chute is made minimum at the vicinity of the lower dead point of the piston while it is made maximum at the vicinity of the upper dead point of the piston. CONSTITUTION:The sliding surface 21A between the swash plate 21 and the chute 22 is formed so as to be a curved surface so that the pressure angle thereof becomes minimum at the vicinity of the lower dead point of the piston 5 and then it increases gradually as the piston moves toward the upper dead point, thereafter, it becomes maximum at the vicinity of the upper dead point of the piston. The pressure angle means an angle between the axial line of the piston 5 and lines normal to the sliding surface 21A in respective positions of the piston 5. According to this method, an unbalanced force, due to the reaction of a force received by the swash plate 21 at the vicinity of the lower dead point whereat the piston 5 is brought into the most elongated condition, is small, therefore, the transversal load on the sliding surface between the cylinder 4 and the piston 5 is reduced. Accordingly, the abnormal abrasion or the like will never be generated even if the sliding length L between the cylinder 4 and the piston 5 is shortened in this case, therefore, the axial lengths of the piston 5 and a cylinder block 3 may be shortened. | ||||||
| 757 | JPS5848750B2 - | JP9747874 | 1974-08-24 | JPS5848750B2 | 1983-10-31 | UIRIAMU ROIDO HORUMUSUTOROOMU |
| 758 | Slipper of piston type fluid apparatus and oblique plate cavitation erosion control and buffer apparatus | JP4178082 | 1982-03-18 | JPS57165601A | 1982-10-12 | KENESU AI BURENNAA; JIYOZEFU EFU UORUSHIYURAGAA |
| 759 | JPS5743744B2 - | JP4351876 | 1976-04-16 | JPS5743744B2 | 1982-09-17 | |
| 760 | Axial piston | JP2136581 | 1981-02-18 | JPS57137662A | 1982-08-25 | AKASAKA YOSHIMICHI; ICHIYANAGI TAKESHI; NAKAMURA ICHIROU; SHIMOTORI MASAHIKO |
| PURPOSE:To prevent the sliding wear and the damage due to cavitation by using at several locations in a machine a compound alloy which combines particles of super hard carbonized material to a base metal of Cr-Mo steel. CONSTITUTION:A hat shaped member consisting of a flat guide 18 and a cylindrical guide 19 is made of a compound alloy which combines particles of a super hard carbonized material to a base metal of Cr-Mo steel, and is integrally connected to a rotor 3, said guide 18 constituting a flat bearing with a fixed valve plate 17, and said rotor 2 being guided by a center shaft 20 which is pre-pressed by a spring 22. Such compound alloy has high hardness and resilience and withstands strong erosion of WHBF thereby preventing the sliding wear of the sliding parts and the damage due to cavitation. | ||||||
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