JPS56492A - Rotary bit for enlarging bottom - Google Patents

Rotary bit for enlarging bottom

Info

Publication number
JPS56492A
JPS56492A JP9983079A JP9983079A JPS56492A JP S56492 A JPS56492 A JP S56492A JP 9983079 A JP9983079 A JP 9983079A JP 9983079 A JP9983079 A JP 9983079A JP S56492 A JPS56492 A JP S56492A
Authority
JP
Japan
Prior art keywords
rotary bit
enlarging
enlarging bottom
bit
rotary
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.)
Granted
Application number
JP9983079A
Other languages
Japanese (ja)
Other versions
JPS5640757B2 (en
Inventor
Hiroshi Kusumi
Yasuaki Ishikawa
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.)
Hitachi Construction Machinery Co Ltd
Original Assignee
Hitachi Construction Machinery 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 Hitachi Construction Machinery Co Ltd filed Critical Hitachi Construction Machinery Co Ltd
Priority to JP9983079A priority Critical patent/JPS56492A/en
Publication of JPS56492A publication Critical patent/JPS56492A/en
Publication of JPS5640757B2 publication Critical patent/JPS5640757B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Earth Drilling (AREA)
JP9983079A 1979-08-07 1979-08-07 Rotary bit for enlarging bottom Granted JPS56492A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9983079A JPS56492A (en) 1979-08-07 1979-08-07 Rotary bit for enlarging bottom

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9983079A JPS56492A (en) 1979-08-07 1979-08-07 Rotary bit for enlarging bottom

Publications (2)

Publication Number Publication Date
JPS56492A true JPS56492A (en) 1981-01-06
JPS5640757B2 JPS5640757B2 (en) 1981-09-22

Family

ID=14257728

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9983079A Granted JPS56492A (en) 1979-08-07 1979-08-07 Rotary bit for enlarging bottom

Country Status (1)

Country Link
JP (1) JPS56492A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4539458A (en) * 1981-11-11 1985-09-03 Inoue-Japax Incorporated Non-immersion EDM method and apparatus
KR101077960B1 (en) * 2010-11-18 2011-10-28 (주)삼일이엔씨 Hole enlargement drills for maintaining drilled hole shape underground, and construction method of piles and tention members using them

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4539458A (en) * 1981-11-11 1985-09-03 Inoue-Japax Incorporated Non-immersion EDM method and apparatus
KR101077960B1 (en) * 2010-11-18 2011-10-28 (주)삼일이엔씨 Hole enlargement drills for maintaining drilled hole shape underground, and construction method of piles and tention members using them
WO2012067454A3 (en) * 2010-11-18 2012-07-26 주식회사 삼일이엔씨 Borehole-diameter-expanding drill having the function of maintaining the shape of the reamed area in the ground, and a pile and tension member construction method for building work using the same

Also Published As

Publication number Publication date
JPS5640757B2 (en) 1981-09-22

Similar Documents

Publication Publication Date Title
JPS55129586A (en) Rotary boring bit
GB2054044B (en) Rotary poisitve-displacement fluidmachines
GB2034187B (en) Rotary agitators
JPS5628992A (en) Drill bit
JPS55144913A (en) Hand drill
DE3063030D1 (en) Rotary drill bit
JPS5744095A (en) Rotary bit
JPS5619427A (en) Torqueeapplied vibrator for rotary construction
GB2056527B (en) Drilling
GB2022476B (en) Rotary boring bit
GB2045838B (en) Rotary drill bits
SU1187728A3 (en) Cutter-loader drill bit
JPS5669013A (en) Drill
ZA793278B (en) Rotary drill bit
GB2045356B (en) Rotary positivedisplacement fluid-machines
DE3064294D1 (en) Drill
JPS5537300A (en) Rotary tool
GB2052346B (en) Rotary hammer drills
JPS56492A (en) Rotary bit for enlarging bottom
JPS55132894A (en) Rotary bit for enlarging bottom
GB2045412B (en) Rotary regenrator
GB2029751B (en) Rotary tools
DE2967325D1 (en) Boring tools
JPS56494A (en) Rotary bit for enlarging bottom
JPS56493A (en) Rotary bit for enlarging bottom