JPS55132894A - Rotary bit for enlarging bottom - Google Patents

Rotary bit for enlarging bottom

Info

Publication number
JPS55132894A
JPS55132894A JP4034079A JP4034079A JPS55132894A JP S55132894 A JPS55132894 A JP S55132894A JP 4034079 A JP4034079 A JP 4034079A JP 4034079 A JP4034079 A JP 4034079A JP S55132894 A JPS55132894 A JP S55132894A
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
JP4034079A
Other languages
Japanese (ja)
Other versions
JPS5647354B2 (en
Inventor
Hiroshi Kusumi
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 JP4034079A priority Critical patent/JPS55132894A/en
Publication of JPS55132894A publication Critical patent/JPS55132894A/en
Publication of JPS5647354B2 publication Critical patent/JPS5647354B2/ja
Granted legal-status Critical Current

Links

JP4034079A 1979-04-05 1979-04-05 Rotary bit for enlarging bottom Granted JPS55132894A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4034079A JPS55132894A (en) 1979-04-05 1979-04-05 Rotary bit for enlarging bottom

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4034079A JPS55132894A (en) 1979-04-05 1979-04-05 Rotary bit for enlarging bottom

Publications (2)

Publication Number Publication Date
JPS55132894A true JPS55132894A (en) 1980-10-16
JPS5647354B2 JPS5647354B2 (en) 1981-11-09

Family

ID=12577893

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4034079A Granted JPS55132894A (en) 1979-04-05 1979-04-05 Rotary bit for enlarging bottom

Country Status (1)

Country Link
JP (1) JPS55132894A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58222287A (en) * 1982-06-16 1983-12-23 日立建機株式会社 Bottom enlarged bit due to earth drill method and bottom enlarged bucket for constructing same
CN102383732A (en) * 2011-07-20 2012-03-21 上海广联建设发展有限公司 Sectional type hydraulic foundation expansion drilling bucket

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58222287A (en) * 1982-06-16 1983-12-23 日立建機株式会社 Bottom enlarged bit due to earth drill method and bottom enlarged bucket for constructing same
JPH0236754B2 (en) * 1982-06-16 1990-08-20 Hitachi Construction Machinery
CN102383732A (en) * 2011-07-20 2012-03-21 上海广联建设发展有限公司 Sectional type hydraulic foundation expansion drilling bucket
CN102383732B (en) * 2011-07-20 2015-05-20 上海广联建设发展有限公司 Sectional type hydraulic foundation expansion drilling bucket

Also Published As

Publication number Publication date
JPS5647354B2 (en) 1981-11-09

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
DE3063030D1 (en) Rotary drill bit
JPS5744095A (en) Rotary bit
JPS55142895A (en) Variableediameter reamer
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
JPS5656372A (en) Grinder for drill* etc*
JPS5537300A (en) Rotary tool
GB2052346B (en) Rotary hammer drills
JPS55132894A (en) Rotary bit for enlarging bottom
JPS56492A (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