JPS5642769A - Check valve for drilling pipe - Google Patents
Check valve for drilling pipeInfo
- Publication number
- JPS5642769A JPS5642769A JP11767979A JP11767979A JPS5642769A JP S5642769 A JPS5642769 A JP S5642769A JP 11767979 A JP11767979 A JP 11767979A JP 11767979 A JP11767979 A JP 11767979A JP S5642769 A JPS5642769 A JP S5642769A
- Authority
- JP
- Japan
- Prior art keywords
- check valve
- section
- drilling pipe
- bottom section
- fitting
- 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.)
- Pending
Links
Landscapes
- Piles And Underground Anchors (AREA)
- Check Valves (AREA)
Abstract
PURPOSE: To make the construction of a check valve simple and facilitate its handling after installation, by composing the check valve of a bottom section having an almost V-shaped cross section and several longitudinal slits and an annular fitting section continuous to the opening end of the bottom section.
CONSTITUTION: A check valve 10 for a drilling pipe is made of an elastic material such as rubber, synthetic rubber and plastic. The check valve comprises a bottom section 11 of V-shaped cross section and an annular fitting section 13. Several longitudinal slits 12 are provided in the bottom section 11. A fitting portion 4 is provided by 30W50cm nearer to the surface of the ground than the tip 2 of the drilling pipe 1. The annular fitting section 13 of the check valve 10 for the drilling pipe 10 is secured by bonding or fitting on the fitting portion 4 so that the bottom section 11 of the check valve is oriented toward the tip 2 of the drilling pipe. The check valve is thus installed. It is preferable for work that the inside diameter of the annular fitting section 13 of the check valve 10 for the drilling pipe is equal to that of the pipe.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11767979A JPS5642769A (en) | 1979-09-12 | 1979-09-12 | Check valve for drilling pipe |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11767979A JPS5642769A (en) | 1979-09-12 | 1979-09-12 | Check valve for drilling pipe |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15346981A Division JPS57112518A (en) | 1981-09-28 | 1981-09-28 | Construction work of earth anchor device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5642769A true JPS5642769A (en) | 1981-04-21 |
Family
ID=14717598
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11767979A Pending JPS5642769A (en) | 1979-09-12 | 1979-09-12 | Check valve for drilling pipe |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5642769A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61288957A (en) * | 1985-04-16 | 1986-12-19 | ジ−テ−イ−・バレロン・コ−ポレ−シヨン | Coolant feeder in rotary cutting tool |
JPH04231724A (en) * | 1990-05-31 | 1992-08-20 | Lucas Aerospace Power Transmission Corp | Multipart bending pivot |
KR100954013B1 (en) | 2007-10-09 | 2010-04-20 | 이준기 | Drain traps |
CN106490081A (en) * | 2015-09-08 | 2017-03-15 | 深圳市联创三金电器有限公司 | There is the pressure surface adnexa and device of protective cover |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS49118036A (en) * | 1973-03-16 | 1974-11-12 |
-
1979
- 1979-09-12 JP JP11767979A patent/JPS5642769A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS49118036A (en) * | 1973-03-16 | 1974-11-12 |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61288957A (en) * | 1985-04-16 | 1986-12-19 | ジ−テ−イ−・バレロン・コ−ポレ−シヨン | Coolant feeder in rotary cutting tool |
JPH04231724A (en) * | 1990-05-31 | 1992-08-20 | Lucas Aerospace Power Transmission Corp | Multipart bending pivot |
KR100954013B1 (en) | 2007-10-09 | 2010-04-20 | 이준기 | Drain traps |
CN106490081A (en) * | 2015-09-08 | 2017-03-15 | 深圳市联创三金电器有限公司 | There is the pressure surface adnexa and device of protective cover |
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