Matches 151 - 200 out of 216 < 1 2 3 4 5 >


Match Document Document Title
DE4445103A1 Drill with hollow shaft and fan dust extractor for drilling holes  
The drill (1) has a rotating hollow shaft (3) with one or more relatively large openings (13) in its wall within an airtight housing (10). A radial fan (17) integral with the drill rotates in the...
DE4425283A1 Dust guide attachment for drill machine  
The attachment has a first ring shaped chamber (1) which is put in contact with the wall and is connected via a spiral spring (3) with a decreasing dia. to a second ring shaped chamber (2)...
DE4423670A1 Cooling water collector for core drills and saws on concrete walls  
The water collector comprises a box open on one face which is held against the surface (26) to be worked on beneath the core drill (44) or saw. The box has an elongated rear plate (12) from whose...
DE4427149C1 Drill bit with insertion end into hammer drill  
The drill bit comprises a jacket tube (13) consisting of at least two separate centering pieces (15,16) for centering the jacket tube on the drill bit. The centering pieces are themselves centred...
DE4438642A1 Electrically driven stone-cutting apparatus  
A motor (4) is seated in a main body (1), and a transmission gearing consisting of a series of three transmission gearwheels (7A, 7B, 7C) is fastened on the motor shaft. The last of the series of...
DE4335417A1 Drilling or chiselling tool with extraction device  
A drilling or chiselling tool has an extraction device (8) which is releasably connected to the housing (1) of the drilling or chiselling tool. The extraction device (8) has an interchangeable...
DE4342484A1 Hand drill  
The invention relates to a hand drill with cooling fan. In the case of such hand drills or hammer drills, soiling of the surrounding area occurs again and again during work, leading, especially in...
DE4322284A1 Hand-held power tool with extracting device (exhausting device)  
A hand-held power tool has a tool (5) which rotates or performs some other working movement and is intended for removing material from a surface. The tool (5) is enclosed by an extracting hood...
DE4322283A1 Tool for a power tool for removing material from a workpiece surface  
A tool (4), rotating in operation, for a power tool for removing material from a workpiece surface includes at least one axle shaft (12) which is directed substantially radially to the axis of...
DE4410414A1 Drilling device for hard, brittle materials and corresponding drilling method  
The subject matter of the invention is a drilling method and a drilling device for hard, brittle materials, in which a core drill (1) is used for abrasion grinding with high speed and high...
DE4305445A1 Apparatus and process for the dust-free fracturing and disposal of asbestos-cement pipes or pipes consisting of a similar, brittle material  
Process and apparatus for the dust-free fracturing and disposal of asbestos-cement pipes or pipes consisting of a similar, brittle material, using a socket which comprises two half-shells and is...
DE4342022A1 Cooler and dust exhauster for drilling machine with tool clamped in spindle - has spindle connected basic cylinder, contg. telescopically movable cylinder tool covering, with basic cylinder surrounding spindle  
The movable cylinder (24) is slidably coupled to the basic cylinder (5) and has inlet (30) and outlet opening section (26,22). To the latter is coupled a blower tube (28) for blowing cold air over...
DE4327870A1 Drilling dust collector  
The dust collector for a drill includes a dust retention container having a frontal dust collection opening and a rear opening for receiving the neck of a drilling tool. The dust retention...
DE4200808A1 Drilling and routing unit with cutting fluid feed through spindle - which has compressed air supplied through bore contiguous with bore in tool and cutting fluid supplied to tool by small dia. pipe threaded down bore  
The machining unit is typically used for drilling and routing operations on window frames where cutting fluid is supplied to the cutting area in the form of a spray. Through the centre of the...
DE4302063A1 Drill bit for hammer drill - has passageway for cooling medium formed by grooves in drill bit shank and outer tube  
The drill bit (1) for a hammer drill has longitudinal grooves in its outer surface and a tube fits over the shank of the drill bit so that passageways (10) are formed for a cooling medium which...
DE4301985A1 Method repairing of cracks in concrete structure - by injecting liquid cement into drilled hole which extends beyond crack  
The crack in a concrete structure is repaired by injecting liquid cement into the crack. The injection of the cement is facilitated by first drilling a hole (6) which extends from the surface of...
DE4201003A1 Automatic de-burring method for ink printing head made of semiconductor wafer - using ceramic pipe connected to vacuum pump, which moves on wafer surface scraping and sucking burrs  
The ink printing heads are produced by creating holes (2) on a semiconductor wafer (1) with a laser. The deburring method involves holding the wafer in a frame. A ceramic pipe (4) connected to a...
DE4208973A1 Removal of dust generated by cutting inscription in stone - by directing air used to operate tool over working area  
The tool for cutting inscriptions in stone has a chisel (1) with a reduced diameter at one end to enable the chisel to be fitted in a socket in the tool. The outer end of the chisel has an insert...
DE4139603A1 Dust extractor for mechanical drill or chisel - comprises telescopic sleeves with bands of brushes between faces of tubes  
The sleeves (3,4) are spring loaded (7) at the machine (1) ends and telescope within limits set by stops (2,8). Bands of brushes (5,6) seal the gap between the two sleeves. The outer sleeve (4)...
DE4235458A1 Machine for cutting holes in stone slabs and - has a flexible bellows to protect the sliding ram from stone duct  
A machine for cutting holes in slabs of natural or reconstituted stone, ceramic, glass, or similar material, has a housing (1) which forms a guide for a vertically oscillating ram (2). The lower...
DE4200580A1 GESTEINSBOHRKRONE  
The rock-drilling bit disclosed has cutter assemblies (4) detachably mounted at equal distances apart round the end of the bit (1), a hardmetal alignment spike (6) located in the centre of the end...
DE4208722A1 BOHR / CUTTING DEVICE FOR CONCRETE OR SIMILAR  
In a boring/cutting device comprising a cutting tool such as a core drill (4) having cutting tips (18) of ultra-hard material, and a coolant supply means (10) for cooling a cutting portion at...
DE4123618A1 On-site water collection and clarification appts. - esp. for recycling saw and drill cooling water  
Appts. for on-site collection and clarification of aq. suspensions, esp. the cooling water of saws and drills, comprises (i) a transportable container (1); (ii) collection and feed equipment for...
DE4117496A1 Power-driven percussion chisel - has suction extractor to remove stone dust with inlet near working area  
The power driven percussion chisel for cutting stone is provided with a suction head to remove the stone dust generated during the operation of the chisel. The chisel has of a rigid pipe (3) which...
DE4110523A1 Circular saw blade for cutting concrete - has teeth of two different widths with diamond coating  
A circular saw blade for cutting material, such as asphalt or reinforced concrete, has a steel core (1) with radial slots (2) cut in its periphery. The slots (2) are separated by radial teeth (4)...
DE4105373A1 Hand-guided cut-off machine for quarry stone - has dust stream collected by suction nozzle at leading corner of guard extending down sides of cutter  
The machine, which has a motor driven saw or abrasive cut-off disk, is fitted with a cutter guard (7). The sides of the guard extend downwards to cover the cutter (2) for a distance just below the...
DE4038941A1 Portable drill dust-extraction equipment - incorporates air inlets in housing outer wall surrounding drill bit  
The dust-extraction equipment for a portable power drill comprises a housing (13) through which the bit (12) passes and which incorporates an outer wall (13c) and a washer (13b). A suction pipe...
DE4030673A1 Dry sepn. of tiles and plates - involves use of drawer-type structure with inner part moving towards outer part  
The tool used for the sepn. of tiles and plates is an angle grinder, the sepn. process taking place in an enclosed, dust-retaining inner chamber which can be cleaned by suction. A tunnel-shaped...
DE4030067A1 Vacuum dust collector for portable power drill - has bag compartment shaped to cause kinking of dust bag and release of adherent dust layer  
Dust laden air is drawn through a collector ring (9) surrounding the tool bit (14) and into a paper or cloth bag (11) housed in a compartment (3) on the underside of the power drill. Just below...
DE4024399A1 Drilling tool with hardened head - is formed as forward tapered truncated cone with grooves for removal of waste  
The drill has a head formed of a hard wearing material (3). The head is shaped as a forward tapering truncated cone. Drilling lubricant is supplied via an internal opening (7). - Waste lubricant...
DE3941957A1 Power driven cutting tool - has hood fitted over cutting disc. swivelable in peripheral direction  
The tool for cutting a groove in masonry (2), or for cutting ceramic tiles, has a cutting disc (6) driven by a motor enclosed in a housing (3). The latter is supported on a swing arm (16), which...
DE3937305A1 Guide rail for portable cut-off tool - has blade passing through slot in top hat section rail so that dust can be extracted from rail  
Portable cut-off tools used for slitting and cutting concrete building parts create a substantial dust hazard. To combat this invention the tool (3) is pushed along a guide rail (1) having a box...
DE3930250A1 Adaptor and core-bit and centre-hole bit - are attached to hand-operated electric drill spindle  
The hand-guided electrically powered drill is fitted with the centre drilling bit and the larger diameter core drill bit working simultaneously. The non cutting end of the core drilling bit (14)...
DE3912885A1 Road surface milling machine - has suction device which removes broken out material straight from milling roller  
A road surface milling machine has a suction apparatus to receive and dispose of the broken out material. The discharge of the material (13) is in the same direction (11) as the machine is...
DE3909058A1 Dry-drilling extraction system  
Dry-drilling extraction systems are designed to save energy and space by the bunker being arranged upstream of the filter and forming a construction unit with the filter. Both the bunker and the...
DE4004292A1 Saw-blade for sawing granite - has pivoted teeth which can rotate through small angle  
The saw-blade for sawing granite or similar material, has the blade body made from two flat bars (2) with spacers placed between them and fastened together with rivets. The lower row of spacers...
DE3841871A1 Method for drilling holes in masonry or concrete  
The invention relates to a method for drilling holes in masonry or concrete by means of a hollow drill which can be connected via an intermediate piece to the rotating shank of a drilling machine....
DE3841284A1 Drilling device for making drilled holes with undercut  
Drilling devices for making undercut drilled holes are known, in the case of which during the drilling operation, the drilling shank is centred by means of small drilling plates present on the...
DE3902222C1 Cutter-pick arrangement  
The invention relates to a cutter-pick arrangement for the control of the water supply for the water spray of the cutting track or cutter pick, comprising a cutter pick mounted in an axially...
DE3838875A1 Drilling device for producing drilled holes with undercut  
Drilling devices for producing undercut drilled holes are known, said devices having a conical shape. To safeguard the drilled-hole mouth against damage and also to facilitate the swivelling-out...
DE3835582A1 Drilling device having a means for extracting the drilling dust  
Drilling devices are known, which use an extracting bell to extract the drilling dust produced during the drilling operation. In the case of known drilling devices, however, the extraction is...
DE3827556A1 Drilling-dust extractor which can be fastened to a drilling machine  
Drilling-dust extractors are known which can be attached to a suction fan of a drilling machine and with a suction head enclose the drill directly in the area of the drill-hole opening. In order...
DE3807780A1 Installation for cleaning the foot or the underside of ceramic products  
Installation for cleaning the foot or the underside of ceramic products, such as plates, tiles, vessels and the like, by grinding and removing the grinding dust with a transport and centring...
DE3807136A1 Process for repairing chimneys, and apparatus for carrying out the individual process steps  
Processes are known, in the case of which inner-wall surfaces (2) of the chimney (1) are knocked off by means of rotating cutting devices. In order to reduce the outlay in terms of time and the...
DE3803708A1 Assembly device for percussion drilling machines  
To insert metallic expansion plugs in drilled holes with undercut, special driving-in tools are required, which are placed onto the expansion plug. The known driving-in tools can be used in...
DE3735529A1 Sawing machine for cutting through stone blocks or hard-material blocks  
A sawing machine for cutting through blocks (13) of stone or hard material is described, in which the stone block or hard-material block (13) rests on strips (12) which at both their ends (15) are...
DE3730693A1 Method and arrangement for binding the splitting dust in block-splitting machines  
In the method of binding the splitting dust in block-splitting machines, a fine spray is sprayed onto the splitting area for a quite definite period of time from directly before the start of the...
DE3729135A1 Process for cutting, storing or detaching materials, e.g. structural parts  
In the case of said apparatus, in order to detach materials such as structural parts, tiles, mortar or similar surface-applied layers, there are arranged, in a housing (1), devices (4) for heating...
DE3726994A1 Method and device for sawing reinforced concrete with a rotating steel blade  
A method of sawing reinforced concrete (20) with a rotating steel blade (10) is described. Cutting elements (12) containing diamond are arranged on the periphery of the steel blade (10), the steel...
DE3722546A1 Process for cutting, scoring or detaching materials, e.g. structural parts  
Surface-applied layers, e.g. layers of mortar, have, up until now, been removed in a complex manner manually or chemically, producing dust and noise in doing so. The novel process can be carried...

Matches 151 - 200 out of 216 < 1 2 3 4 5 >