BE568355A - - Google Patents
Info
- Publication number
- BE568355A BE568355A BE568355A BE568355A BE568355A BE 568355 A BE568355 A BE 568355A BE 568355 A BE568355 A BE 568355A BE 568355 A BE568355 A BE 568355A BE 568355 A BE568355 A BE 568355A
- Authority
- BE
- Belgium
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
- E21D15/44—Hydraulic, pneumatic, or hydraulic-pneumatic props
-
- 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
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)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1215157A GB835142A (en) | 1957-04-13 | 1957-04-13 | Improvements relating to roof supports for mine workings |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE568355A true BE568355A (US20030157376A1-20030821-M00001.png) | 1958-06-30 |
Family
ID=9999281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE568355A BE568355A (US20030157376A1-20030821-M00001.png) | 1957-04-13 | 1958-06-05 |
Country Status (4)
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3202061A (en) * | 1962-07-09 | 1965-08-24 | Lowell B Johnston | Fluid actuated displacement and positioning system |
| US4572579A (en) * | 1983-12-19 | 1986-02-25 | Ken Saito | Dump apparatus |
| NL8900557A (nl) | 1989-03-07 | 1990-10-01 | Rolflex Oost Nederland | Beweegbare laadbrug. |
| AU665605B2 (en) * | 1991-12-26 | 1996-01-11 | Kelley Company Inc. | Dock leveler incorporating an inflatable bag |
| US6460212B2 (en) | 1993-10-04 | 2002-10-08 | Kelley Company, Inc. | Dock leveler having an inflatable member |
| US5996156A (en) * | 1995-01-31 | 1999-12-07 | Kelley Company, Inc. | Dock leveler raised by deflating an inflatable member |
| US5600859A (en) * | 1995-01-31 | 1997-02-11 | Kelley Company, Inc. | Dock leveler in which the ramp is raised and lowered using an inflatable member and method of use |
| US5802650A (en) * | 1993-10-04 | 1998-09-08 | Kelley Company, Inc. | Dock leveler having an inflatable member |
| US5446938A (en) * | 1993-10-04 | 1995-09-05 | Kelley Company Inc. | Bag construction for a dockleveler |
| US5481774A (en) * | 1993-10-04 | 1996-01-09 | Kelley Company, Inc. | Support mechanism for a dockleveler lift bag |
| US5450643A (en) * | 1993-10-04 | 1995-09-19 | Kelley Company Inc. | Edge-of-dock leveler |
| US6711774B2 (en) | 1993-10-04 | 2004-03-30 | Kelley Company, Inc. | Dock leveler having an inflatable member |
| US5471693A (en) * | 1993-10-04 | 1995-12-05 | Kelley Company Inc. | Support and attachment mechanism for a dockleveler lift bag |
| US5522108A (en) * | 1995-01-31 | 1996-06-04 | Kelley Company, Inc. | Dock leveler having a ramp movable to a raised position by inflation of an inflatable member, with a filler for occupying volume within the inflatable member |
| US5475888A (en) * | 1995-01-31 | 1995-12-19 | Kelley Company, Inc. | Lip lifting mechanism for a dock leveler |
-
1957
- 1957-04-13 GB GB1215157A patent/GB835142A/en not_active Expired
-
1958
- 1958-06-02 FR FR1196543D patent/FR1196543A/fr not_active Expired
- 1958-06-05 BE BE568355A patent/BE568355A/xx unknown
- 1958-06-05 NL NL228461A patent/NL112444C/xx active
Also Published As
| Publication number | Publication date |
|---|---|
| FR1196543A (fr) | 1959-11-24 |
| GB835142A (en) | 1960-05-18 |
| NL112444C (US20030157376A1-20030821-M00001.png) | 1966-02-15 |
