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WO/1990/004068A1 |
Cutter for digging an opening into the ground and comprising a rigid support (1) and a socket (2) arranged at the end of the support. The socket is provided with a point (3) having a flared base and being connected to first means which, ...
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WO/1990/003473A1 |
The apparatus according to the present invention is a direct-acting impact ripper for transmitting a striking force of a hydraulic breaker to a rock efficiently. This impact ripper has a bracket (2) fixed to the rear portion of a chassis...
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WO/1990/003472A1 |
A rotating and tilting device to be fitted between a working machine and a tool, which is provided with a fastening member (1) for attaching the device detachably to the boom of the working machine and with a fastening member (3) for att...
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WO/1990/003230A1 |
A solid waste retrieval device (11) utilizes a rotating drum (26) carrying a plurality of teeth (37) to lift dried sludge from an underlying sand bed such that substantially no sand is removed with the sludge. The device moves over the s...
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WO/1989/011569A1 |
A trench filling unit comprising a hopper (24) for the storage of material to be inserted into the trench, conveyor means (28) for moving the material from the hopper (24) into the trench, and blade means (42, 43) in use mounted in the t...
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WO/1989/009659A1 |
There is disclosed portable screening apparatus for separating larger particles from finer particles in bulk materials, and which comprises an elevator (1) having an inlet at its lower end for receiving a supply of bulk material to be sc...
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WO/1989/009174A1 |
A conveyor apparatus (10) for picking up material from a flat surface and delivering the material to a higher level, comprising a continuous conveyor (22), the continuous conveyor (22) having outwardly directed portions such as paddles (...
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WO/1989/007691A1 |
A method and apparatus for dredging in flowing waters comprising a support member (3) carrying thrust means (13) so that the thrust means (13) is directed downwardly towards the area to be cleared, the support member (3) being mounted in...
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WO/1989/005408A1 |
A pulsating hydraulic drive system comprises a pulse generator (12), its drive (13), the hydraulic engine (2-5) and connecting lines (15-18), assembled to form a constructional unit. A rotary generator known per se is advantageously used...
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WO/1989/004910A1 |
Impact rippers are useful for ripping solid rock. The service life of the impactor can be extended if the impactor is operated only when the ripper shank is loaded sufficient to transmit the impact energy into the material being ripped. ...
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WO/1989/003915A1 |
A rotary trench excavator comprises a propulsion unit (1) hingedly connected to a movable boom (2) carrying the working organ which consists of a system of rotors (9-11). Each rotor (9-11) is provided inside it, to ensure its rotation, w...
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WO/1989/003916A1 |
A corner tooth assembly is provided on the corner of an implement for protection thereof from wear during use. It is necessary to provide a tight fit between the corner tooth and the corner portion of the implement so that unnecessary mo...
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WO/1989/003635A1 |
A self-propelled stone crusher constructed so that it can be operated even on the soft ground without lowering of the travelling performance thereof, can remove by itself such a large stone that cannot be crushed therewith, and crush sto...
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WO/1989/000631A1 |
A rock excavating shovel (1) has hinged chisels (11) or hinged chisel holders mounted on the edges of the cylindrical cutter (3) which clear the space in front of the supports to which the cylindrical cutter is secured.
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WO/1989/000630A1 |
A process and device are disclosed for dredging silt deposits in ports, waterways, etc. by means of a slope conveyor. The silt upper layer (25) is undercut, gathered by means of a receptacle (5, 19, 20) and removed by means of a mechanic...
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WO/1989/000629A1 |
A bucket scoop, for example a drag shovel (1) or a loading shovel, comprises an endless conveyor screw (2) arranged perpendicular to the direction of excavation which conveys the earth excavated by the bucket scoop to an opening (8) in t...
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WO/1988/009607A1 |
A self-propelled earth breaking machine, comprising a chassis supported on ground engaging means (18, 19) in the form of drums (22) carrying prongs or tynes (21) extending radially outwardly thereof and curving generally in the direction...
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WO/1988/008470A1 |
A pneumatic extraction head for underwater debris, in particular sand and gravel, comprises a housing (16), a base plate (21) located at the bottom of the housing and forming an inlet opening for the debris, and a flange plate (22) locat...
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WO/1988/005848A1 |
A chain digger attachment (10) for boom (11) mounted operation with disconnectable couplings (13, 66, 67), the attachment having a chain (17, 60) extended about sprockets (19, 23, 61, 83) on a telescopic support frame (14, 64, 65) having...
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WO/1988/003584A1 |
Impact rippers are useful in fracturing rocks, concrete, etc. which cannot be fractured by ripping alone. Operating the impactor of the impact ripper without sufficient loading applied to the ripper tip is detrimental to the life of the ...
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WO/1988/003197A1 |
A cutting device comprising a drum (1) which is rotatable about a longitudinal axis and which carries on its outer surface a plurality of spaced teeth (2) arranged on at least one helical path over the surface of the drum and at least on...
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WO/1987/006638A1 |
The device consists of a casing (1), a striker (2) mounted inside it and provided with openings (5), an air-distributing sleeve (6), an elastic element (7) and a threaded bushing (8). The external surface of the threaded bushing (8) is p...
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WO/1987/005878A1 |
A submersible unit comprises a portable, open or closed bottomed pneumatic chamber (4) mounted on flexible drive tracks (29) controlled by personnel from the chamber (4) for operation along the bottom (2) of a body of water (3), on the s...
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WO/1987/005649A1 |
A suction dredger apparatus. The apparatus includes a scoop (3) mounted on a boom arrangement, and a suction device (4) including a dredger pump (9) mounted on the scoop and a discharge pipe arrangement (10).
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WO/1987/005646A1 |
The apparatus is provided with a conventional frame (2), earth splitting tool (9, 20), laying head (10) formed as hollow wingtype subsoiler, pipe and plastic tape storage drums (15, 16) and, according to the invention, guiding elements (...
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WO/1987/004893A1 |
A subsoil aerator comprising a blade (19) mounted on a frame (1, 2, 3) which in use is connected to a towing vehicle. The blade (19) is reciprocated relative to the frame (1, 2, 3) so as to assist the progress of the blade (19) through s...
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WO/1987/003947A1 |
In order to allow a laying of flexible tubes at as great a depth as about (7) metres below the surface of the sediment it is suggested according to the invention that the tube-laying vehicle comprises a vibratory tube-laying plough membe...
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WO/1987/000568A1 |
Device comprising a driven rotor, provided with a number of spoon like means (5). Each spoon like means comprises a scoop (8) fixed to the end of an arm. A mechanism is provided, with which each spoon like means can be accelerated in a p...
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WO/1986/002679A1 |
Method for breaking down ooze in a harbour basin wherein at least one breaking machine provided with a compressed air box is lowered down to the breaking level and is transversally or longitudinally displaced on the bottom. The ooze take...
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WO/1986/002422A1 |
The present pipeline consists of separate sections (8) interconnected consecutively by means of outside joining elements (9) hermetically contacting, by all their surface, with the joining area of the sections (8). The latter are provide...
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WO/1986/002423A1 |
The present pipeline consists of coaxially mounted and rigidly interconnected envelopes the inner one being made of non-hermetical and hermetical layers (3, 4) and the totality of the envelopes being saturated with a binding agent (5) an...
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WO/1986/000656A1 |
An underwater plough (5) is provided with at least one elastic-wave vibrator. This may be arranged to vibrate directly the leading edge (7) of a plough blade and/or the forward region of the lower edge of a plough blade. Alternatively on...
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WO/1986/000683A1 |
Sunken conduit comprised, in cross-section, of a lower element (2) and an upper covering element (1) bearing on the upper part of the side walls of the lower element (2) through longitudinal bearings (3). According to the invention, the ...
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WO/1986/000355A1 |
Apparatus for excavating hard soils comprising support means (10) an endless chain capable of movement relative to said support means, drive means (41) for moving said endless chain, means integral with said endless chain operable to con...
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WO/1986/000357A1 |
A pneumatic reversible percussion device comprises a casing (1) with a movable striker (2). A stepped sleeve (5) is secured inside the casing (1). The thicker part of the sleeve (5) enters into a hollow (4) of the stricker (20) and is pr...
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WO/1986/000356A1 |
A machine for mole ploughing a flexible cable or conduit (K), said machine including a vehicle, a plough (4) connected to the vehicle and a guide means (5) mounted in connection with the plough, said means feeding the conduit from a rota...
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WO/1985/004918A1 |
For establishing a vertical hole in the ground, preferably for the mounting of a subterranean fixpoint marker below a road or a street, a vehicle is used having a guide frame for a hole forming tool mounted thereon. In order to render an...
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WO/1985/004439A1 |
The improvement is in that the upper layer of the ground or soil is moved away from before the wheels of at least one axle of the vehicle. In an arrangement for moving a vehicle having wheels and a frame structure on loose ground or soil...
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WO/1985/004210A1 |
A machine (13) for the continuous casting of structural concrete walls (10) has a chassis (19) mounted on tracks (20). A telescopic boom (26) is mounted for buffing movement on a work platform (21) mounted for slewing movement relative t...
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WO/1985/003963A1 |
The reversible pneumatic impacting device for the formation of wells in the soil comprises a body in which a striker (2) is so arranged that it can reciprocate therein. In the striker (2) there are provided an air distributor (3), config...
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WO/1985/002427A1 |
The machine comprises a vibrator (26) for applying vibratory forces, and a member (30) for applying non-vibratory forces to a vibratory tool carrier (52) to which is removably attached a working tool, e.g. a bucket (14). The vibrator inc...
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WO/1984/004938A1 |
An apparatus intended for work at sea includes a boat part (1), a pontoon (2) coupled thereto and a work implement (3). The pontoon is coupled to the boat part for pivoting movement in a vertical plane and the work implement projects out...
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WO/1984/004554A1 |
The device for digging wells in the soil comprises a cylindrical body (1), a striker (2) which is so arranged in the body that it may impact a nose-piece (4) thereof, and an air distribution mechanism (3). Longitudinal grooves (5) and ri...
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WO/1984/002251A1 |
The device is intended to break open a cultivated soil with a probe through which compressed air may be suddenly introduced into the soil by means of a fast closing valve (3), as well as a substrate by means of an injection valve (55). T...
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WO/1984/001397A1 |
An improved ripper assembly (12) is joined to and drawn by a draft device (10) and includes a mounting structure (14), a ripper element (16), and an impactor apparatus (18). The mounting structure (14) includes an upper flange (20) and a...
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WO/1984/000183A1 |
A machine for underwater trenching for pipelines in which a sled (1) comprising two pipe loops (2) arranged in vertical planes at opposite sides of the pipeline (4) and interconnected by transverse pipes (3) is supported on and guided fo...
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WO/1983/002969A1 |
By a method of permanently improving the surface drainage from a playing field, the ground is cut in a network of narrow, vertical trenches, which are filled with a porous material whereafter the ground cut up is divided into fine partic...
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WO/1983/002471A1 |
Vibrator unit preferably for construction works such as rock scaling having a tool (17) with an active functional portion (21) together with a vibrator unit (25) connected with the tool for the production of vibrations in the functional ...
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WO/1983/001977A1 |
A tool assembly (4) for working a material (R) such as breaking rock. Assembly (4) includes a tool mounting (17) having a fixed section (18), and a movable section (19) for movement relative to the fixed section (18) in a working directi...
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WO/1983/000060A1 |
A method for the laying out of a cable (11) under water is executed in one single cycle of operations: (a) digging of a trench, for example by means of a bucket-type digger (2), (b) laying down of the cable (11) by means of pressing-down...
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