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JPS6164995A |
(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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JPS618152Y2 |
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JPS6123346U |
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JPS614628B2 |
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JPS6123389U |
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JPS613983Y2 |
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JPS613933B2 |
A pneumatic impact mechanism for driving rod-like members having a hollow cylindrical casing with a tail portion and a front end portion. The casing accommodates a reciprocating stepped hammer piston defining in the casing, on the tail p...
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JPS613633B2 |
A recoil damping device for a percussion tool in which the recoils are damped by means of a pressurized hydraulic fluid entrapped in the machine housing.
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JPS613632B2 |
Tool for drawing a directo force from a fluid flow which is to be braked e.g. for pile driver where the tool has a tube oriented in the direction of the desired force. The fluid enters in one end piece of this tube and a piston slides in...
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JPS6119575A |
A coupling arrangement for a percussion drilling machine for coupling of a shank (7) unrotatably to a frame bushing (2) rotatably mounted in a frame and rotated by a rotating device. The frame bushing is provided with axial driving groov...
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JPS612217Y2 |
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JPS612224Y2 |
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JPS612225Y2 |
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JPS6114392A |
Pressurized water is used to operate a percussive down-the-hole drill and the spent motive fluid is used as a flushing fluid. A rear cylinder chamber (24) is constantly pressurized and a valve (28) controls the inletfrom the chamber (24)...
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JPS6042149Y2 |
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JPS60186399U |
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JPS6055275B2 |
A hammer drill has a movable tool and a driving element substantially coaxial with the tool. The driving element directly transmits axial impact from the same to the tool without transmission of torque. A tool holder surrounds proximal e...
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JPS6055273B2 |
A hydraulic percussion apparatus comprising a body, a cylinder in the body and a percussion piston reciprocating in the cylinder. A distributing valve moves in a valve housing. A valve for starting and stopping the percussion apparatus i...
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JPS6038793Y2 |
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JPS60159093U |
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JPS6033181Y2 |
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JPS60144692U |
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JPS60173288A |
The internal absorbent layer (9) of the casing delimits an internal volume (10) around the drill (1), which volume is divided on either side of the exhaust orifice (3) by two transverse partitions (13A, 13B) into three successive expansi...
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JPS6029434Y2 |
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JPS60156897A |
(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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JPS6026933Y2 |
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JPS6026947Y2 |
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JPS60120098U |
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JPS6034675B2 |
A double-acting hydraulic jack has a cylinder, a piston dividing the cylinder into first and second chambers of variable volume on opposite sides of the piston, and a piston rod with first and second passages opening into the first and s...
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JPS60150975A |
A hydraulically operated impacting device includes a differential piston slidably disposed in a bore, and having an impacting surface and a piston rod facing at the other end a valve sleeve circumscribing the piston rod, there being an a...
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JPS60115993U |
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JPS6030835B2 |
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JPS60133193A |
A soundproofing device for a drill which has an elongate shaft extending between a bit and a forged collar for attaching it to a pneumatic hammer comprises a sheath formed by a semi-rigid tube of plastics material adapted to surround the...
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JPS6027799B2 |
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JPS6027356B2 |
A hydraulic drilling apparatus, especially a rock drill comprising a body, a cylinder in the body and a percussion piston reciprocating in the cylinder. A tool is connected to the body and a motor is provided for rotating the tool. A con...
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JPS6027353B2 |
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JPS60119892A |
(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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JPS6092741U |
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JPS6021184Y2 |
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JPS60112987A |
(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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JPS6085388U |
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JPS6019196Y2 |
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JPS6074786U |
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JPS6020155B2 |
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JPS6015834Y2 |
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JPS6015833Y2 |
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JPS6015801B2 |
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JPS6043596A |
(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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JPS604694U |
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JPS60388Y2 |
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