BE697578A - - Google Patents
Info
- Publication number
- BE697578A BE697578A BE697578DA BE697578A BE 697578 A BE697578 A BE 697578A BE 697578D A BE697578D A BE 697578DA BE 697578 A BE697578 A BE 697578A
- Authority
- BE
- Belgium
- 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
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/006—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor provided with essential hydraulic devices
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEK0059250 | 1966-05-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE697578A true BE697578A (en) | 1967-10-02 |
Family
ID=7229060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE697578D Expired BE697578A (en) | 1966-05-14 | 1967-04-26 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US3503302A (en) |
| BE (1) | BE697578A (en) |
| GB (1) | GB1179597A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4706624A (en) * | 1986-06-10 | 1987-11-17 | The Jacobs Manufacturing Company | Compression release retarder with valve motion modifier |
| US4838516A (en) * | 1986-06-10 | 1989-06-13 | The Jacobs Manufacturing Company | Compression release retarder with valve motion modifier |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US901712A (en) * | 1907-06-13 | 1908-10-20 | Jeannot W Kenevel | Valve-controlling means. |
| US974189A (en) * | 1907-12-23 | 1910-11-01 | Frank Ritter | Valve mechanism for dental or other similar chairs. |
| US2657028A (en) * | 1949-06-15 | 1953-10-27 | Joy Mfg Co | Walking jack |
| US2585389A (en) * | 1950-03-11 | 1952-02-12 | Gen Motors Corp | Hydraulic control |
| US2748799A (en) * | 1952-11-15 | 1956-06-05 | Standard Oil Co | Simultaneously-operated liquid and gas vent valves |
| US2783773A (en) * | 1953-11-30 | 1957-03-05 | Rasch Albert | Replacement for faucet valves |
| US2825240A (en) * | 1954-10-14 | 1958-03-04 | Radiart Corp | Hydraulic antenna rotator |
| NL256743A (en) * | 1959-10-12 | |||
| GB982978A (en) * | 1960-08-10 | 1965-02-10 | Dowty Mining Equipment Ltd | Roof supports suitable for use in mines |
-
1967
- 1967-04-26 BE BE697578D patent/BE697578A/xx not_active Expired
- 1967-05-10 US US637569A patent/US3503302A/en not_active Expired - Lifetime
- 1967-05-12 GB GB22119/67A patent/GB1179597A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US3503302A (en) | 1970-03-31 |
| GB1179597A (en) | 1970-01-28 |