JPH03122187U - - Google Patents
Info
- Publication number
- JPH03122187U JPH03122187U JP3076290U JP3076290U JPH03122187U JP H03122187 U JPH03122187 U JP H03122187U JP 3076290 U JP3076290 U JP 3076290U JP 3076290 U JP3076290 U JP 3076290U JP H03122187 U JPH03122187 U JP H03122187U
- Authority
- JP
- Japan
- Prior art keywords
- ring body
- ring
- tip
- bit
- double pipe
- 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
Landscapes
- Earth Drilling (AREA)
Description
第１図および第２図はこの考案の二重管用リン
グビツトの一実施例を示すもので、第１図は断面
図、第２図は先端視図、第３図および第４図は従
来の二重管用リングビツトの一例を示すもので、
第３図は側面図、第４図は先端視図である。
１……リング本体、６……刃体、１０……くり
粉溝。
Figures 1 and 2 show an embodiment of the double pipe ring bit of this invention. Figure 1 is a sectional view, Figure 2 is a view from the tip, and Figures 3 and 4 are conventional double pipe ring bits. This is an example of a ring bit for heavy pipes.
FIG. 3 is a side view, and FIG. 4 is a view from the tip. 1...Ring body, 6...Blade body, 10...Known groove.
Claims (1)
用リングビツトにおいて、 上記リング本体の内周面に、該リング本体先端
からリング本体基端側に延びるくり粉溝を形成し
たことを特徴とするリングビツト。[Claims for Utility Model Registration] A ring bit for a double pipe in which a blade is fixed to the tip of the ring body, which has a hollow groove extending from the tip of the ring body to the proximal end of the ring body on the inner circumferential surface of the ring body. A ring bit characterized by the fact that it has been formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990030762U JPH0732622Y2 (en) | 1990-03-26 | 1990-03-26 | Double pipe drilling tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990030762U JPH0732622Y2 (en) | 1990-03-26 | 1990-03-26 | Double pipe drilling tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03122187U true JPH03122187U (en) | 1991-12-13 |
| JPH0732622Y2 JPH0732622Y2 (en) | 1995-07-26 |
Family
ID=31533470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990030762U Expired - Lifetime JPH0732622Y2 (en) | 1990-03-26 | 1990-03-26 | Double pipe drilling tool |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0732622Y2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014162709A1 (en) * | 2013-04-01 | 2014-10-09 | 株式会社ミヤナガ | Rebar drill |
| JP2016121497A (en) * | 2014-12-25 | 2016-07-07 | 株式会社大林組 | Ring bit |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63151592U (en) * | 1987-03-19 | 1988-10-05 | ||
| JPH01120592U (en) * | 1988-02-09 | 1989-08-15 |
-
1990
- 1990-03-26 JP JP1990030762U patent/JPH0732622Y2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63151592U (en) * | 1987-03-19 | 1988-10-05 | ||
| JPH01120592U (en) * | 1988-02-09 | 1989-08-15 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014162709A1 (en) * | 2013-04-01 | 2014-10-09 | 株式会社ミヤナガ | Rebar drill |
| JP2016121497A (en) * | 2014-12-25 | 2016-07-07 | 株式会社大林組 | Ring bit |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0732622Y2 (en) | 1995-07-26 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |