NL231514A - - Google Patents
Info
- Publication number
- NL231514A NL231514A NL231514DA NL231514A NL 231514 A NL231514 A NL 231514A NL 231514D A NL231514D A NL 231514DA NL 231514 A NL231514 A NL 231514A
- Authority
- NL
- Netherlands
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
- B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
- B66F3/25—Constructional features
- B66F3/42—Constructional features with self-contained pumps, e.g. actuated by hand
-
- 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
- E21D15/45—Hydraulic, pneumatic, or hydraulic-pneumatic props having closed fluid system, e.g. with built-in pumps or accumulators
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Reciprocating Pumps (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEB46178A DE1155076B (de) | 1957-09-24 | 1957-09-24 | Druckmittelbeaufschlagter, insbesondere hydraulischer Grubenstempel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL231514A true NL231514A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
Family
ID=6967857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL231514D NL231514A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1957-09-24 |
Country Status (5)
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB686301A (en) * | 1941-03-29 | 1953-01-21 | Dresser Equipment Company | Improvements in or relating to valve mechanisms and fluid operated motor devices employing said valve mechanisms |
-
0
- NL NL231514D patent/NL231514A/xx unknown
- BE BE571481D patent/BE571481A/xx unknown
-
1957
- 1957-09-24 DE DEB46178A patent/DE1155076B/de active Pending
-
1958
- 1958-09-19 GB GB3008658A patent/GB900711A/en not_active Expired
- 1958-09-23 FR FR1210381D patent/FR1210381A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE571481A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | |
| FR1210381A (fr) | 1960-03-08 |
| DE1155076B (de) | 1963-10-03 |
| GB900711A (en) | 1962-07-11 |