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JPS5410323B2 |
An hydraulically powered impact device intended for rock drilling having a hydraulic fluid section for reciprocately powering an impact piston and a non-hydraulic section into which the impact piston as well as a drill stem adapter exten...
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JPS547482B2 |
An electropneumatic hammer of the type in which a driving piston is caused to undergo a reciprocating movement of translation under the action of an electric motor and a striking piston is driven by the driving piston, with the striking ...
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JPS545763B2 |
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JPS5435701U |
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JPS543122Y2 |
A rock-drilling machine comprising three main units is disclosed. The hammer device and the rotary drive motor are separately mounted on the slide, which incorporates a power transmission between the rotary drive motor and the drill-sleeve.
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JPS546301U |
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JPS5346962B2 |
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JPS5343362B2 |
1468387 Rotary-percussive rock drills SOC D'ETUDE ET DE CONSTRUCTION DE MACHINES POUR TOUTES INDUSTRIES 7 Nov 1974 [7 Nov 1973] 48290/74 Heading B3C [Also in Division B4] In a hydraulically operated rotary-percussive drilling apparatus s...
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JPS53114702A |
A rock drill having a hydraulic pressure reservoir formed by the drill housing, and an anvil rotation mechanism enclosed in the housing. A piston of substantial length and a mechanical hydro-operated valve means, provide favorable pulse ...
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JPS5335881B2 |
1346540 Rock drills ATLAS COPCO AB 29 Aug 1972 [7 Sept 1971] 39980/72 Heading B3C [Also in Division F1] A rock drill is rotated by a pressure-gas rotary-vane-motor 1, and is fed by a rotary-vane motor, or a double acting ram 4, an unload...
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JPS5325282B2 |
A pneumatic percussion tool having a reciprocable piston hammer with similar reduced diameter portions extending from opposite sides of an enlarged piston portion. Each reduced diameter portion includes an annular groove cooperable with ...
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JPS5318961B2 |
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JPS5245642B1 |
A rock drill actuated solely by a liquid medium under pressure comprises a hydraulic motor for rotating the drill steel and another hydraulic motor for applying axial blows to drill; said motors are hydraulically connected in series, wit...
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JPS52133001A |
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JPS52131902A |
A rock drill assembly and more particularly a rock drill assembly having improved fluid power means therefor.
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JPS52125171U |
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JPS5290302U |
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JPS5143442B2 |
1380097 Rock drills ATLAS COPCO AB 1 Nov 1972 [5 Nov 1971] 50298/72 Heading B3C A rock drill comprises a fluid pressure vanetype motor 1 for rotating the drill rod 63, and a fluid pressure feed motor 4 which may be of the vane type, or m...
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JPS5143001B2 |
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JPS51143702U |
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JPS5178003A |
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JPS50103804A |
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JPS5025685Y1 |
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JPS5025683Y1 |
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JPS5010522B1 |
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JPS49126501A |
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JPS4945201B1 |
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JPS4939742Y1 |
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JPS4990602A |
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JPS4968806U |
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JPS4958801U |
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JPS4935705U |
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JPS499282B1 |
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JPS497102U |
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JPS4822926B1 |
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JPS4842901A |
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JPS428083Y1 |
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