FR1101609A - étai télescopique - Google Patents
étai télescopiqueInfo
- Publication number
- FR1101609A FR1101609A FR1101609DA FR1101609A FR 1101609 A FR1101609 A FR 1101609A FR 1101609D A FR1101609D A FR 1101609DA FR 1101609 A FR1101609 A FR 1101609A
- Authority
- FR
- France
- Prior art keywords
- telescopic prop
- prop
- telescopic
- 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
- E21D15/581—Devices for setting props or chocks in which the props are pre- loaded
-
- 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
- E21D15/16—Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure
- E21D15/20—Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure with pawl, pin, cross-piece, or the like engaging with ratchet teeth, notches, holes, or the like, spaced apart at intervals
-
- 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
- E21D15/28—Telescopic props with parts held relatively to each other by friction or gripping
- E21D15/40—Collar or other support gripped to one or both parts by toggle-action, cam, or other member pivoted or similarly mounted
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)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1101609T | 1952-11-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1101609A true FR1101609A (fr) | 1955-10-10 |
Family
ID=9621098
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR1101609D Expired FR1101609A (fr) | 1952-11-10 | 1952-11-10 | étai télescopique |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR1101609A (fr) |
-
1952
- 1952-11-10 FR FR1101609D patent/FR1101609A/fr not_active Expired
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