FR875837A - Advanced hydraulic jack - Google Patents
Advanced hydraulic jackInfo
- Publication number
- FR875837A FR875837A FR875837DA FR875837A FR 875837 A FR875837 A FR 875837A FR 875837D A FR875837D A FR 875837DA FR 875837 A FR875837 A FR 875837A
- Authority
- FR
- France
- Prior art keywords
- hydraulic jack
- advanced hydraulic
- advanced
- jack
- hydraulic
- 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
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
- E21D15/58—Devices for setting props or chocks
- E21D15/585—Devices for setting props or chocks by means of hydraulically operated devices for mechanical props, or hydraulic props in which the hydraulic part is not important
- E21D15/586—Devices for setting props or chocks by means of hydraulically operated devices for mechanical props, or hydraulic props in which the hydraulic part is not important the props being pre-loaded
- E21D15/587—Devices for setting props or chocks by means of hydraulically operated devices for mechanical props, or hydraulic props in which the hydraulic part is not important the props being pre-loaded by means of power accumulators to be pre-charged by rock pressure
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR875837T | 1941-05-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR875837A true FR875837A (en) | 1942-10-06 |
Family
ID=9360334
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR875837D Expired FR875837A (en) | 1941-05-29 | 1941-05-29 | Advanced hydraulic jack |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR875837A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4072288A (en) * | 1975-06-10 | 1978-02-07 | Stabilus Gmbh | Chair with pneumatically adjustable seat height and back support inclination |
-
1941
- 1941-05-29 FR FR875837D patent/FR875837A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4072288A (en) * | 1975-06-10 | 1978-02-07 | Stabilus Gmbh | Chair with pneumatically adjustable seat height and back support inclination |
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