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Document Title |
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JPS5923822Y2 |
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JPS5916069B2 |
The invention relates to a tool which incorporates a device insuring the efficient control of a percussive hammer, regardless of the drilling depth. For this purpose, drive sludge arriving in an annular space reaches an inlet of a fluid ...
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JPS5934392A |
(57) [Abstract] Since this gazette is application data in front of an electronic application, the data of an abstract is not recorded.
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JPS5841271Y2 |
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JPS58123991A |
(57) [Abstract] Since this gazette is application data in front of an electronic application, the data of an abstract is not recorded.
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JPS5833403B2 |
Disclosed herein is a hydraulic circuit for use in conjunction with a hydraulic drifter or impact mechanism used for drilling holes in connection with mining or the like. The hydraulic circuit described is arranged to provide for the rot...
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JPS5833068B2 |
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JPS5828778Y2 |
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JPS5829686U |
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JPS57197589U |
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JPS5752234Y2 |
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JPS5752228Y2 |
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JPS5742796B2 |
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JPS57133690U |
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JPS5734437B2 |
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JPS5726956Y2 |
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JPS5775086U |
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JPS5719254Y2 |
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JPS579517Y2 |
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JPS5718089U |
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JPS56167088A |
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JPS5647279Y2 |
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JPS5638756B2 |
1449765 Drilling tools POCLAIN 22 Feb 1974 [12 March 1973] 8274/74 Heading E1F A drilling tool includes an auger driven by a motor via a transmission incorporating a ram operable to superimpose a cyclic angular movement on the continuous...
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JPS5636275B2 |
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JPS5630439B2 |
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JPS5617509B2 |
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JPS5617510B2 |
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JPS5615270Y2 |
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JPS5631984A |
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JPS5613594B2 |
1383720 Percussive tools ATLAS COPCO AB 2 July 1973 [30 June 1972] 31369/73 Heading B4C [Also in Divisions F2 and B3] A hammer device comprises a crankshaft 2 having a combustion engine piston 25 and a compressor piston 3 for driving a h...
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JPS55500996A |
Device for making drillings into the rock, soil, etc., of which the motor is connected by a rotary coupling or similar to a drilling rod at the end of which is fitted a percussion apparatus. The object of the invention is to improve such...
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JPS5543867B2 |
A portable impact wrench wherein a crank assembly reciprocates a cylinder which propels an impeller against the rear end of a tool holder in response to each of its forward strokes. The tool holder is rotatable stepwise in a single direc...
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JPS55113786U |
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JPS5524232Y2 |
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JPS5517199B2 |
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JPS5512958B2 |
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JPS5511197B2 |
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JPS5510479Y2 |
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JPS5510478Y2 |
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JPS5510480Y2 |
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JPS5510477Y2 |
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JPS5531803U |
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JPS557911B2 |
A hydraulic rock drill having a hydraulic drill drive motor, a hydraulic feed motor, and a hydraulic impact unit and associated pumps for supplying hydraulic fluid under pressure and provided with an automatic control system including a ...
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JPS554554B2 |
The intention is to be able to reduce the wear and permit easier starting. The percussion apparatus has a housing (1) to which a tool can be fastened. A piston (27) with a head (4) is axially movable in a reciprocating manner in a cylind...
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JPS557336A |
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JPS5441155B1 |
A pneumatic tool capable of imparting rotary and axial movement to a bit, either singly or together. A single adjustable member selectively provides communication between a pneumatic inlet and only the rotating portion of the tool, betwe...
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JPS5432601B2 |
A hydraulically operated percussion apparatus comprising a housing in which a reciprocating impact piston is arranged to transfer impact energy to an impact tool, pressure chambers defined between said housing and said piston, and a chan...
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JPS5427282B1 |
A rock drill wherein a piston is the only moving hammer part and such piston is movable without independent valve means or the like.
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JPS5477203A |
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JPS5410322B2 |
In the percussion drill rod assembly of the present invention rotary force is transmitted through a tubular member of the assembly while impact force is transmitted through the rod member centrally located in the tubular member. Either o...
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