JPH02145979U - - Google Patents
Info
- Publication number
- JPH02145979U JPH02145979U JP5148090U JP5148090U JPH02145979U JP H02145979 U JPH02145979 U JP H02145979U JP 5148090 U JP5148090 U JP 5148090U JP 5148090 U JP5148090 U JP 5148090U JP H02145979 U JPH02145979 U JP H02145979U
- Authority
- JP
- Japan
- Prior art keywords
- liquid chamber
- piston
- control port
- port
- impact device
- 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
- 239000007788 liquid Substances 0.000 claims description 8
- 230000001105 regulatory effect Effects 0.000 claims 2
Landscapes
- Percussive Tools And Related Accessories (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
- Earth Drilling (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5148090U JPH02145979U (it) | 1990-05-17 | 1990-05-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5148090U JPH02145979U (it) | 1990-05-17 | 1990-05-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02145979U true JPH02145979U (it) | 1990-12-11 |
Family
ID=31570966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5148090U Pending JPH02145979U (it) | 1990-05-17 | 1990-05-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02145979U (it) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57174594A (en) * | 1981-04-22 | 1982-10-27 | Furukawa Kogyo Kk | Strike mechanism of liquid pressure type rock drilling machine |
| JPS57205077A (en) * | 1981-06-12 | 1982-12-16 | Furukawa Kogyo Kk | Converting mechanism for piston stroke of hydraulic type impact tool |
| JPS5871083A (ja) * | 1981-10-20 | 1983-04-27 | 株式会社山本鉄工所 | 打撃装置 |
-
1990
- 1990-05-17 JP JP5148090U patent/JPH02145979U/ja active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57174594A (en) * | 1981-04-22 | 1982-10-27 | Furukawa Kogyo Kk | Strike mechanism of liquid pressure type rock drilling machine |
| JPS57205077A (en) * | 1981-06-12 | 1982-12-16 | Furukawa Kogyo Kk | Converting mechanism for piston stroke of hydraulic type impact tool |
| JPS5871083A (ja) * | 1981-10-20 | 1983-04-27 | 株式会社山本鉄工所 | 打撃装置 |