JPH01167489U - - Google Patents
Info
- Publication number
- JPH01167489U JPH01167489U JP6610988U JP6610988U JPH01167489U JP H01167489 U JPH01167489 U JP H01167489U JP 6610988 U JP6610988 U JP 6610988U JP 6610988 U JP6610988 U JP 6610988U JP H01167489 U JPH01167489 U JP H01167489U
- Authority
- JP
- Japan
- Prior art keywords
- piston
- excavator
- reverse switching
- switching
- underground
- 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.)
- Pending
Links
- 238000009527 percussion Methods 0.000 claims 6
- 230000001629 suppression Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Earth Drilling (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6610988U JPH01167489U (en]) | 1988-05-18 | 1988-05-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6610988U JPH01167489U (en]) | 1988-05-18 | 1988-05-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01167489U true JPH01167489U (en]) | 1989-11-24 |
Family
ID=31291525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6610988U Pending JPH01167489U (en]) | 1988-05-18 | 1988-05-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01167489U (en]) |
-
1988
- 1988-05-18 JP JP6610988U patent/JPH01167489U/ja active Pending
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