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JPH0274184U |
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JPH0220301Y2 |
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JPH0220389B2 |
A narrow profile power handle uniquely adapted for use as a flexible line trimmer having improved handling and safety features is disclosed. The power handle is also equipped with a quick connect and disconnect coupling and is useful for...
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JPH0243190U |
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JPH0280785A |
PURPOSE: To change the amplitude of vibration in correspondence with components of different characteristics by constituting a vibratory core drill free to change the position of the center of gravity of a rotor. CONSTITUTION: A variable...
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JPH0239890U |
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JPH0254087A |
PURPOSE: To enhance the efficiency of work and enable excavation with a regulated crushed cross-sectional area, to be executed efficiently with safety by arranging a blasting powder jet device and a triggering device at the rear section ...
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JPH02529B2 |
An internal combustion apparatus is disclosed having a linear output. A metered quantity of gas fuel is transferred between a cylinder head and the disc of a plunger reciprocable in a principal chamber between top and bottom end of strok...
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JPH0144617Y2 |
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JPH01234179A |
PURPOSE: To reliably apply braking torque to an output shaft when a housing suddenly rotates with the output shaft as the center by forming a spring element to surround the output shaft out of a helical spring. CONSTITUTION: Inertial mas...
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JPH01223290A |
PURPOSE: To prevent the drop or the like of a rod from a rod exchanging device and reduce the load of an operator by making the operation of the rod exchanging device semiautomatic and displaying various states of the equipment detected ...
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JPH0141475B2 |
In an hydraulic rock drill there is an hydraulic so called recoil damper that damps the reflected shock waves that propagates from the rock backwardly through the drill stem. The damper comprises a support piston (68) slidably in a cylin...
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JPH01214691A |
PURPOSE: To prevent seizure and wear by flame-spraying or welding a wear resisting material having a good sliding characteristic on the torque transmission surface of a spline, and heat-treating the material after cutting off adhered unn...
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JPH0138955B2 |
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JPH01502125A |
PCT No. PCT/SU86/00141 Sec. 371 Date Aug. 24, 1986 Sec. 102(e) Date Aug. 24, 1986 PCT Filed Dec. 24, 1986 PCT Pub. No. WO88/05115 PCT Pub. Date Jul. 14, 1988.A percussive action machine for changing the shape of solids objects comprises ...
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JPH0198748U |
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JPH0111830Y2 |
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JPH0117837B2 |
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JPS644955Y2 |
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JPS64197B2 |
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JPS6362355B2 |
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JPS6346554Y2 |
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JPS6362354B2 |
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JPS6343031Y2 |
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JPS6355434B2 |
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JPS6354111B2 |
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JPS6350512B2 |
Pressure fluid operated percussion drilling machine comprising a frame (1) forming a cylinder space (2) for an axially movable percussion piston (3). The frame is provided with channels (4,7) connectable to a pressure fluid source (5) an...
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JPS6347589B2 |
A hand-guided impact hammer and hammer drill having a handgrip which is spring-mounted relative to the hammer housing. At the bottom, the handgrip is spring-mounted harder, with greater stability against lateral displacement relative to ...
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JPS6335110Y2 |
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JPS6344513B2 |
In a hydraulic rock drill the valve (27) is controlled by two control lines (37, 42), each control line having a plurality of branches with ports (38-41 and 43-46) which open into the hydraulic cylinder of the rock drill. A valving pin (...
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JPS63133985U |
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JPS6332228Y2 |
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JPS63126486U |
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JPS63501859A |
PCT No. PCT/SU85/00101 Sec. 371 Date Aug. 21, 1987 Sec. 102(e) Date Aug. 21, 1987 PCT Filed Dec. 23, 1985 PCT Pub. No. WO87/03925 PCT Pub. Date Jul. 2, 1987.A percussive tool comprising a housing (1) accommodating a movable striker (2) a...
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JPS63169273A |
Damping device for a percussion rock drilling machine. A damper piston (22) and a compressed air cushion in a damping chamber (23) transfer feeding force from the drill machine housing (11) to the drill string (15). A venting valve (51) ...
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JPS6322232Y2 |
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JPS6320552Y2 |
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JPS63110389A |
(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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JPS6319314B2 |
A hammer drill is arranged to rotate and also apply percussive force to a tool receptacle. The percussive force is transmitted from a shaft to a drive piston which, in turn, reciprocates a percussion piston which drives the tool receptac...
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JPS6375225A |
PURPOSE: To raise the efficiency of operations by providing a device by which a grab bucket or rock drill is connected through a cable to a crane and the grab bucket, etc., is held over the horizontal and all directions near to the posit...
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JPS6311511B2 |
A "hole bottom" hammer drill comprising a tubular body (1) supplied with compressed air, a drill bit (3) and a percussion piston (38) caused to move in an inner cylinder (7) by a mechanism distributing compressed air alternately below an...
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JPS6314697U |
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JPS6314698U |
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JPS632556Y2 |
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JPS633112B2 |
Continuously revolving percussion drilling machine, which comprises a body (1), a drill shank (2) mounted rotatably and axially slidably in the body for causing impacts on the drill rod, an impact mechanism (3) positioned in the body for...
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JPS6311790A |
(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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JPS634192A |
(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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JPS6254601B2 |
A drilling and driving device provides, in combination, a drilling tool for drilling a borehole and a percussion attachment for driving fastening elements into the borehole. The drilling device includes a housing into which a drilling to...
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JPS6253735B2 |
1. A resilient rubber bearing in which a bearing plate (1), an annular conical spring element (2) and a base plate (3) enclose a working chamber (8) filled with hydraulic fluid, which chamber is connected via a nozzle (6) to a compensati...
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JPS6241105Y2 |
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