JPS6141835Y2 - - Google Patents

Info

Publication number
JPS6141835Y2
JPS6141835Y2 JP1978129361U JP12936178U JPS6141835Y2 JP S6141835 Y2 JPS6141835 Y2 JP S6141835Y2 JP 1978129361 U JP1978129361 U JP 1978129361U JP 12936178 U JP12936178 U JP 12936178U JP S6141835 Y2 JPS6141835 Y2 JP S6141835Y2
Authority
JP
Japan
Prior art keywords
drum
spring
wedge
drilling machine
movable member
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
JP1978129361U
Other languages
English (en)
Japanese (ja)
Other versions
JPS5544885U (enrdf_load_html_response
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 filed Critical
Priority to JP1978129361U priority Critical patent/JPS6141835Y2/ja
Publication of JPS5544885U publication Critical patent/JPS5544885U/ja
Application granted granted Critical
Publication of JPS6141835Y2 publication Critical patent/JPS6141835Y2/ja
Expired legal-status Critical Current

Links

Landscapes

  • Earth Drilling (AREA)
JP1978129361U 1978-09-19 1978-09-19 Expired JPS6141835Y2 (enrdf_load_html_response)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1978129361U JPS6141835Y2 (enrdf_load_html_response) 1978-09-19 1978-09-19

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1978129361U JPS6141835Y2 (enrdf_load_html_response) 1978-09-19 1978-09-19

Publications (2)

Publication Number Publication Date
JPS5544885U JPS5544885U (enrdf_load_html_response) 1980-03-24
JPS6141835Y2 true JPS6141835Y2 (enrdf_load_html_response) 1986-11-27

Family

ID=29093938

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1978129361U Expired JPS6141835Y2 (enrdf_load_html_response) 1978-09-19 1978-09-19

Country Status (1)

Country Link
JP (1) JPS6141835Y2 (enrdf_load_html_response)

Also Published As

Publication number Publication date
JPS5544885U (enrdf_load_html_response) 1980-03-24

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