JPH0141836Y2 - - Google Patents
Info
- Publication number
- JPH0141836Y2 JPH0141836Y2 JP1789488U JP1789488U JPH0141836Y2 JP H0141836 Y2 JPH0141836 Y2 JP H0141836Y2 JP 1789488 U JP1789488 U JP 1789488U JP 1789488 U JP1789488 U JP 1789488U JP H0141836 Y2 JPH0141836 Y2 JP H0141836Y2
- Authority
- JP
- Japan
- Prior art keywords
- expansion
- rubber
- elastic body
- center
- reinforcing layer
- 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.)
- Expired
Links
- 239000012530 fluid Substances 0.000 claims description 31
- 239000011435 rock Substances 0.000 claims description 28
- 239000002184 metal Substances 0.000 claims description 26
- 230000003014 reinforcing effect Effects 0.000 claims description 18
- 230000002787 reinforcement Effects 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims 1
- 238000000034 method Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 8
- 239000003795 chemical substances by application Substances 0.000 description 4
- 230000008602 contraction Effects 0.000 description 3
- 238000005553 drilling Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 239000012779 reinforcing material Substances 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229920006311 Urethane elastomer Polymers 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
Landscapes
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1789488U JPH0141836Y2 (enrdf_load_stackoverflow) | 1988-02-13 | 1988-02-13 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1789488U JPH0141836Y2 (enrdf_load_stackoverflow) | 1988-02-13 | 1988-02-13 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63181694U JPS63181694U (enrdf_load_stackoverflow) | 1988-11-24 |
| JPH0141836Y2 true JPH0141836Y2 (enrdf_load_stackoverflow) | 1989-12-08 |
Family
ID=30811072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1789488U Expired JPH0141836Y2 (enrdf_load_stackoverflow) | 1988-02-13 | 1988-02-13 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0141836Y2 (enrdf_load_stackoverflow) |
-
1988
- 1988-02-13 JP JP1789488U patent/JPH0141836Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63181694U (enrdf_load_stackoverflow) | 1988-11-24 |
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