NZ247439A - Hydraulically driven impact hammer; fluid cushioning of hammerhead - Google Patents
Hydraulically driven impact hammer; fluid cushioning of hammerheadInfo
- Publication number
- NZ247439A NZ247439A NZ247439A NZ24743990A NZ247439A NZ 247439 A NZ247439 A NZ 247439A NZ 247439 A NZ247439 A NZ 247439A NZ 24743990 A NZ24743990 A NZ 24743990A NZ 247439 A NZ247439 A NZ 247439A
- Authority
- NZ
- New Zealand
- Prior art keywords
- hammerhead
- hydraulically driven
- impact hammer
- driven impact
- fluid cushioning
- Prior art date
Links
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/457,479 US5065824A (en) | 1989-12-28 | 1989-12-28 | Hydraulically powered repetitive impact hammer |
NZ23650290 | 1990-12-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
NZ247439A true NZ247439A (en) | 1993-06-25 |
Family
ID=26650936
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NZ247439A NZ247439A (en) | 1989-12-28 | 1990-12-17 | Hydraulically driven impact hammer; fluid cushioning of hammerhead |
Country Status (1)
Country | Link |
---|---|
NZ (1) | NZ247439A (en) |
-
1990
- 1990-12-17 NZ NZ247439A patent/NZ247439A/en unknown
Similar Documents
Publication | Publication Date | Title |
---|---|---|
AU624248B2 (en) | Damped hammer drill | |
GB2285008B (en) | Fluid-actuated impact hammer | |
ZA934693B (en) | Air percussion hammer for directional drilling operations | |
NO301727B1 (en) | Double acting hydraulic impact tool | |
NO944089D0 (en) | Tool for increasing the impact of a percussion tool in a wellbore | |
GB9404663D0 (en) | Hammer drill and/or percussion hammer | |
ZA902771B (en) | Rock working tool | |
AU4537489A (en) | Damped hammer drill | |
AU3888789A (en) | Hydraulic impact tool | |
EP0419866A3 (en) | Drill hammer | |
EP0706604A4 (en) | Impact hammer | |
GB2215757B (en) | A pneumatic percussion hammer | |
GB2227039B (en) | Percussion drill | |
NZ247439A (en) | Hydraulically driven impact hammer; fluid cushioning of hammerhead | |
GB2285007B (en) | Hammer drill | |
AU5937690A (en) | Shock absorbed striking tool | |
DK543289D0 (en) | PRESSURE-DRIVEN SHOCK TOOLS, ISRAEL HYDRAULIC HAMMER | |
EP0473908A3 (en) | Drill and/or impact hammer | |
GB9312558D0 (en) | Impact block assembly for percussion drilling apparatus | |
EP0589267A3 (en) | Drill- and/or impact hammer | |
AU5994890A (en) | Impact hammer support and driving tool | |
GB2188270B (en) | Hammer drill for percussion drilling | |
GB2171948B (en) | Hydraulic impact tool | |
GB9016360D0 (en) | Percussive tool | |
GB8817538D0 (en) | Hydraulically operated impact/vibratory device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ERR | Error or correction |
Free format text: THE AGENT HAS BEEN CORRECTED TO 600022, AJ PARK, STATE INSURANCE TOWER, LEVEL 22, 1 WILLIS STREET, WELLINGTON 6011, NZ; THE MISSING OWNER HAS BEEN ADDED (215425, ESCO CORPORATION, C/- A J PARK, PO BOX 949, WELLINGTON 6140, NZ); THE CONTACT HAS BEEN CORRECTED TO 600022, AJ PARK, STATE INSURANCE TOWER, LEVEL 22, 1 WILLIS STREET, WELLINGTON 6011, NZ Effective date: 20130523 |