NL6804982A - - Google Patents
Info
- Publication number
- NL6804982A NL6804982A NL6804982A NL6804982A NL6804982A NL 6804982 A NL6804982 A NL 6804982A NL 6804982 A NL6804982 A NL 6804982A NL 6804982 A NL6804982 A NL 6804982A NL 6804982 A NL6804982 A NL 6804982A
- Authority
- NL
- Netherlands
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/14—Telescopic props
- E21D15/15—Means counteracting entry of dirt; Built-in cleaning devices
- E21D15/155—Built-in cleaning devices
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/14—Telescopic props
- E21D15/44—Hydraulic, pneumatic, or hydraulic-pneumatic props
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
- F16J15/3224—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip capable of accommodating changes in distances or misalignment between the surfaces, e.g. able to compensate for defaults of eccentricity or angular deviations
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- General Engineering & Computer Science (AREA)
- Earth Drilling (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEK0061988 | 1967-04-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL6804982A true NL6804982A (en:Method) | 1968-10-14 |
Family
ID=7230366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL6804982A NL6804982A (en:Method) | 1967-04-13 | 1968-04-09 |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE712965A (en:Method) |
| DE (1) | DE1533749A1 (en:Method) |
| FR (1) | FR1557454A (en:Method) |
| NL (1) | NL6804982A (en:Method) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2403852C3 (de) | 1974-01-28 | 1981-01-08 | Gewerkschaft Eisenhuette Westfalia, 4670 Luenen | Hydraulischer Teleskopstempel für den Grubenausbau |
| DE2925467A1 (de) * | 1979-06-23 | 1981-01-22 | Salzgitter Maschinen Ag | Dichtvorrichtung zwischen spuelrohr und einsteckende eines schlaggeraets |
-
1967
- 1967-04-13 DE DE19671533749 patent/DE1533749A1/de active Pending
-
1968
- 1968-03-25 FR FR1557454D patent/FR1557454A/fr not_active Expired
- 1968-03-29 BE BE712965D patent/BE712965A/xx unknown
- 1968-04-09 NL NL6804982A patent/NL6804982A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR1557454A (en:Method) | 1969-02-14 |
| DE1533749A1 (de) | 1970-01-22 |
| BE712965A (en:Method) | 1968-07-31 |