JPH0735910Y2 - ケーシングスクリューの継手構造 - Google Patents

ケーシングスクリューの継手構造

Info

Publication number
JPH0735910Y2
JPH0735910Y2 JP4412290U JP4412290U JPH0735910Y2 JP H0735910 Y2 JPH0735910 Y2 JP H0735910Y2 JP 4412290 U JP4412290 U JP 4412290U JP 4412290 U JP4412290 U JP 4412290U JP H0735910 Y2 JPH0735910 Y2 JP H0735910Y2
Authority
JP
Japan
Prior art keywords
casing
screw
screw blades
blades
screws
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.)
Expired - Fee Related
Application number
JP4412290U
Other languages
English (en)
Japanese (ja)
Other versions
JPH044987U (cs
Inventor
博之 江頭
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.)
Sanwa Kizai Co Ltd
Original Assignee
Sanwa Kizai Co Ltd
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 Sanwa Kizai Co Ltd filed Critical Sanwa Kizai Co Ltd
Priority to JP4412290U priority Critical patent/JPH0735910Y2/ja
Publication of JPH044987U publication Critical patent/JPH044987U/ja
Application granted granted Critical
Publication of JPH0735910Y2 publication Critical patent/JPH0735910Y2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Earth Drilling (AREA)
JP4412290U 1990-04-25 1990-04-25 ケーシングスクリューの継手構造 Expired - Fee Related JPH0735910Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4412290U JPH0735910Y2 (ja) 1990-04-25 1990-04-25 ケーシングスクリューの継手構造

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4412290U JPH0735910Y2 (ja) 1990-04-25 1990-04-25 ケーシングスクリューの継手構造

Publications (2)

Publication Number Publication Date
JPH044987U JPH044987U (cs) 1992-01-17
JPH0735910Y2 true JPH0735910Y2 (ja) 1995-08-16

Family

ID=31557140

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4412290U Expired - Fee Related JPH0735910Y2 (ja) 1990-04-25 1990-04-25 ケーシングスクリューの継手構造

Country Status (1)

Country Link
JP (1) JPH0735910Y2 (cs)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS518321U (cs) * 1974-07-01 1976-01-21

Also Published As

Publication number Publication date
JPH044987U (cs) 1992-01-17

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Legal Events

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