JPS6331636B2 - - Google Patents

Info

Publication number
JPS6331636B2
JPS6331636B2 JP9809584A JP9809584A JPS6331636B2 JP S6331636 B2 JPS6331636 B2 JP S6331636B2 JP 9809584 A JP9809584 A JP 9809584A JP 9809584 A JP9809584 A JP 9809584A JP S6331636 B2 JPS6331636 B2 JP S6331636B2
Authority
JP
Japan
Prior art keywords
seal
cone
bit
leg
bearing
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
Application number
JP9809584A
Other languages
English (en)
Japanese (ja)
Other versions
JPS60242290A (ja
Inventor
Hirokazu Karasawa
Shigeo Misawa
Hirohide Hayamizu
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.)
National Institute of Advanced Industrial Science and Technology AIST
Original Assignee
Agency of Industrial Science and Technology
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 Agency of Industrial Science and Technology filed Critical Agency of Industrial Science and Technology
Priority to JP9809584A priority Critical patent/JPS60242290A/ja
Publication of JPS60242290A publication Critical patent/JPS60242290A/ja
Publication of JPS6331636B2 publication Critical patent/JPS6331636B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Earth Drilling (AREA)
JP9809584A 1984-05-16 1984-05-16 ビツト用シ−ルの装着方法 Granted JPS60242290A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9809584A JPS60242290A (ja) 1984-05-16 1984-05-16 ビツト用シ−ルの装着方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9809584A JPS60242290A (ja) 1984-05-16 1984-05-16 ビツト用シ−ルの装着方法

Publications (2)

Publication Number Publication Date
JPS60242290A JPS60242290A (ja) 1985-12-02
JPS6331636B2 true JPS6331636B2 (enrdf_load_stackoverflow) 1988-06-24

Family

ID=14210778

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9809584A Granted JPS60242290A (ja) 1984-05-16 1984-05-16 ビツト用シ−ルの装着方法

Country Status (1)

Country Link
JP (1) JPS60242290A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63129344U (enrdf_load_stackoverflow) * 1987-02-17 1988-08-24

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63129344U (enrdf_load_stackoverflow) * 1987-02-17 1988-08-24

Also Published As

Publication number Publication date
JPS60242290A (ja) 1985-12-02

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Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term