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JPS59192986U |
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JPS5947099B2 |
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JPS59167887U |
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JPS59167888U |
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JPS59160684U |
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JPS59160686U |
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JPS59160685U |
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JPS59187991A |
(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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JPS59187994A |
(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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JPS59182073A |
In an electropneumatic drill or chipping hammer with an air cushion transmitting driving force of an exciter piston to a percussion piston, a clutch is provided to interengage a drive motor with the exciter piston. The clutch can be sele...
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JPS5939272B2 |
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JPS59161589A |
The machine has a housing (1) in which an inserting tool (4), in particular an inserting stub of a drilling pipe or the like, can be inserted and can be held via a holding part (3) in this housing (1), the inserting tool (4) having at le...
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JPS5931771Y2 |
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JPS59156678A |
In a drill hammer a motor driven striking mechanism is provided with two air cushions of changeable volumes, through which impact energy is transmitted from the motor to a reciprocating striker which in turn transmits the energy to a too...
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JPS59124077U |
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JPS59121092U |
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JPS59116487U |
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JPS5930879B2 |
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JPS5923822Y2 |
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JPS5925069B2 |
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JPS5920478Y2 |
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JPS5923953B2 |
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JPS5976784A |
A hand-held electrically powered hammer tool with a rotor-type electromotor (17) and a hammer mechanism (14) arranged in a machine housing (13). The hammer mechanism (14) includes a drive shaft (24) with an excentric crank pin (35) there...
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JPS5961393U |
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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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JPS5910237Y2 |
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JPS5910239Y2 |
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JPS5943594U |
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JPS5941596A |
(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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JPS5931687U |
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JPS5928474U |
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JPS5927265U |
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JPS5924491U |
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JPS596994B2 |
A conventional type of impact rock drill is modified to include a fluid reservoir, valve and piston arrangement whereby each impact stroke of the driver ejects water at high pressure from the cutter bit, thereby increasing the mechanical...
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JPS5924489U |
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JPS5921890A |
The device is for fitment of rock drills, and comprises a bar (12) and a support component on which is mounted a connection unit (32). The support unit bears the drilling appts., and is rotatably coupled to the bar via the connection uni...
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JPS5855320B2 |
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JPS5855319B2 |
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JPS58185688U |
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JPS58502008A |
PCT No. PCT/AU82/00196 Sec. 371 Date Nov. 24, 1981 Sec. 102(e) Date Jul. 20, 1983 PCT Filed Nov. 24, 1982 PCT Pub. No. WO83/01977 PCT Pub. Date Jun. 9, 1983.A tool assembly (4) for working a material (R) such as breaking rock. Assembly (...
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JPS58172565U |
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JPS58140293U |
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JPS5842355B2 |
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JPS5842352B2 |
A method for damping the movement of the hammer piston of a hammer mechanism and for catching the hammer piston in a forward end position when the drill tool is situated outside the operating range of the hammer piston is disclosed. Duri...
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JPS5842353B2 |
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JPS5842351B2 |
A drilling apparatus includes a drilling rod, a feed motor for advancing and retreating the rod in relation to an object to be drilled, and a control system for controlling the movement of the rod. The control system includes a pulse gen...
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JPS5841272Y2 |
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JPS5841273Y2 |
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JPS5841271Y2 |
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JPS58134483U |
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