JPS5620806A - Fluid control system - Google Patents
Fluid control systemInfo
- Publication number
- JPS5620806A JPS5620806A JP9634179A JP9634179A JPS5620806A JP S5620806 A JPS5620806 A JP S5620806A JP 9634179 A JP9634179 A JP 9634179A JP 9634179 A JP9634179 A JP 9634179A JP S5620806 A JPS5620806 A JP S5620806A
- Authority
- JP
- Japan
- Prior art keywords
- spool
- displacement
- groove
- port
- tank
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
PURPOSE: To prevent generation of a vibration of a circuit and secure a maximum amount of flow by a method wherein a groove, communicating a load port with a tank port upon an initial period of a spool displacement and shutting them upon the maximum displacement of the spool, is provided on a land portion of the spool.
CONSTITUTION: A groove 45 is provided on a land portion 38 of a spool 23 and a load port A is communicated with a tank port through a choke 51 formed by the groove 45 upon an initial period of a displacement of the spool 23 while the communication between the load port A and the tank port T is shut by closing the choke 51 upon the maximum displacement of the spool 23. According to this system, generation of a vibration of a circuit may be prevented when the spool 23 is displaced because a leakage is generated, while the maximum amount of flow may be secured upon the maximum displacement of the spool 23 because the leakage into the tank is shut off.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9634179A JPS6032041B2 (en) | 1979-07-27 | 1979-07-27 | fluid control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9634179A JPS6032041B2 (en) | 1979-07-27 | 1979-07-27 | fluid control device |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10695386A Division JPS61266801A (en) | 1986-05-09 | 1986-05-09 | Vehicle with turntable driven by hydraulic motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5620806A true JPS5620806A (en) | 1981-02-26 |
| JPS6032041B2 JPS6032041B2 (en) | 1985-07-25 |
Family
ID=14162303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9634179A Expired JPS6032041B2 (en) | 1979-07-27 | 1979-07-27 | fluid control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6032041B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60500222A (en) * | 1983-01-24 | 1985-02-21 | キヤタピラ− トラクタ− カンパニ− | Pressure compensated hydraulic system |
| JPS61266801A (en) * | 1986-05-09 | 1986-11-26 | Daikin Ind Ltd | Vehicle with turntable driven by hydraulic motor |
| JPH02245130A (en) * | 1989-03-17 | 1990-09-28 | Akiyoshi Yamane | Preservation of fishes and shellfishes in live state |
| JPH0378181U (en) * | 1989-11-30 | 1991-08-07 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0516864B2 (en) * | 1990-11-26 | 2001-12-12 | Hitachi Construction Machinery Co., Ltd. | Hydraulic driving system and direction change-over valves |
-
1979
- 1979-07-27 JP JP9634179A patent/JPS6032041B2/en not_active Expired
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60500222A (en) * | 1983-01-24 | 1985-02-21 | キヤタピラ− トラクタ− カンパニ− | Pressure compensated hydraulic system |
| JPH0343484B2 (en) * | 1983-01-24 | 1991-07-02 | Caterpillar Inc | |
| JPS61266801A (en) * | 1986-05-09 | 1986-11-26 | Daikin Ind Ltd | Vehicle with turntable driven by hydraulic motor |
| JPH02245130A (en) * | 1989-03-17 | 1990-09-28 | Akiyoshi Yamane | Preservation of fishes and shellfishes in live state |
| JP2552184B2 (en) * | 1989-03-17 | 1996-11-06 | 株式会社氷温 | How to store seafood alive |
| JPH0378181U (en) * | 1989-11-30 | 1991-08-07 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6032041B2 (en) | 1985-07-25 |
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