JPS55132894A - Rotary bit for enlarging bottom - Google Patents
Rotary bit for enlarging bottomInfo
- 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
Links
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)
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 |
-
1979
- 1979-04-05 JP JP4034079A patent/JPS55132894A/en active Granted
Cited By (4)
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 |
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