JPS5642769A - Check valve for drilling pipe - Google Patents

Check valve for drilling pipe

Info

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
Application number
JP11767979A
Other languages
Japanese (ja)
Inventor
Shingo Yoshimura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHIN GIJUTSU KAIHATSU KK
SHINGIJUTSU KAIHATSU KK
Original Assignee
SHIN GIJUTSU KAIHATSU KK
SHINGIJUTSU KAIHATSU KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by SHIN GIJUTSU KAIHATSU KK, SHINGIJUTSU KAIHATSU KK filed Critical SHIN GIJUTSU KAIHATSU KK
Priority to JP11767979A priority Critical patent/JPS5642769A/en
Publication of JPS5642769A publication Critical patent/JPS5642769A/en
Pending legal-status Critical Current

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
JP11767979A 1979-09-12 1979-09-12 Check valve for drilling pipe Pending JPS5642769A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49118036A (en) * 1973-03-16 1974-11-12

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49118036A (en) * 1973-03-16 1974-11-12

Cited By (4)

* Cited by examiner, † Cited by third party
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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