baber/WOPTO huggingface dataset:
Patent DE-4103086-A1 (DE)
Title: Deposition of high purity silicon by thermal decomposition - using several microwave heating sources for even heating of substrates and reduced contamination levels
Inventor: BRUNNER GERHARD DIPL ING
IPC: C01B33/035
Filed: 1991-02-01
Abstract: High purity semiconductor material, especially Si, is deposited by thermal decomposition of gaseous cpds. on substrates heated by the absorption of electromagnetic energy. The process is carried out in a reactor with a metallic base-plate containing spray-heads for gas supply and removal and carrying a bell-jar which fits over the base-plate and is hermetically sealed to it. Pref. at least one generator is used externally to generate electromagnetic waves (em-waves) which are radiated into the dome at several places, and the inner lining of the reactor dome is made of a material which reflects the em-waves virtually loss-free. The energy is radiated into the dome via at least one membrane, pref. 4-8 membranes, which is (are) fully transparent for the wavelength used and on which no depsn. occurs of the semiconductor material. The membrane is pref. quartz which is pref. cooled. The energy generated, which is pref. microwave energy in the range 0.5-3.0 GHz, is pref. transferred via wave-guides, whereby relecting mirrors may be used to radiate energy to several reactors. The substrates are pref. heated until they reach the temp. at which they start to reflect the microwave energy, pref. a temp. of up to 650 deg. C. USE/ADVANTAGE - The process achieves homogeneous heating of the substrates resulting in less mechanical damage in the substrates and so less breakage during subsequent processing. The heating method also results in lower contamination levels than current methods, e.g., the Siemens process. This is further decreased by carrying out the deposition at lower temps. using silane as the Si source, resulting in a carrier lifetime of better than 5 msecs. and a resistivity (n-type) of 2000 ohm.cm. with all contamination levels below the sensitivity level of the NIAA method. The process gives much accelerated heating, reducing the process-times significantly
Patent DE-4107946-A1 (DE)
Title: Method of milling cross grain or end grain of timber batten widths - involves pair of cutter heads at right angles to work piece, traversing first from one side and then other
Inventor: STEGHERR LUDOLF
IPC: B27G19/10
Filed: 1991-03-13
Abstract: A method of milling cross grain timber batten widths works first from one side and then from the opposite side towards the centre of the profile in such a way that the cutter makes a smooth unbroken cut giving a continuous profiled form. To achieve this there are two aggregated cutter heads (15, 16, 17) at right angles to the work piece (1) working across the end of the timber object (30). USE/ADVANTAGE - There is no breaking out or fraying of the timber ends.
Patent DE-4113968-A1 (DE)
Title: Mask structure for semiconductor component prodn. - has transparent support plate on which are periodically set given groups of component structures with phase shift structures
Inventor: IMURA RYO
IPC: H03H3/08
Filed: 1991-04-29
Abstract: A number of groups of component structures ise formed on the transparent support plate in order to realise a lithographic mask structure with transparent and opaque regions. At least part of an opaque region has a size defined by adjacent transparent regions. The groups are periodically arranged, and at least one group has a phase shift structure. The component structure of the groups contains a transparent partial structure can be combined with other partial structures such that a multiple transition of an illumination beam can be combined through the mask structure. Pref. the phase shift structure has a function to provide a phase shift of 180 deg. for the illumination beam. USE/ADVANTAGE - For mfr. of semiconductor components with improved mask formation and function.
Patent DE-4114877-A1 (DE)
Title: Structured optical components mfr. by pulsed UV laser copying - using quartz mask selectively removing UV opaque material, e.g. PMMA or optical properties in visible range economically and reliably
Inventor: KRAUSE ULF
IPC: G02B5/18
Filed: 1991-05-07
Abstract: Appts comprises excimer (SIC) laser (1), a UV-transparent mask (2), pref. of quartz; a UV optical unit (3) (lens); and workpiece (4), pref. of polymeric material, esp. PMMA, which is absorbent in the UV range (opaque) and transparent to other spectral ranges. The components are aligned on the optical axis of the beam. The pulsed UV beam from the laser (1) is divided by the transparent and opaque regions of the mask (2), and the portions of the beam passing the transparent regions are focussed by the lens (3) onto the workpiece (4) to optically copy the mask (2) by e.g. selectively removing material at or near the surface. USE/ADVANTAGE - Cf. injection moulding of plastics or compression moulding of plastics of glass, gives better optical properties. Cf. lithographic processes, less complex and more flexible; simple adjustment of the copying process parameters changes the optical characteristics of the workpiece. It gives economic and reliable optical copying to produce structures in UV-absorbing materials. Cf. existing laser processes, it gives improved relative positioning of the laser spots and improved uniformity of material removal.
Patent DE-4120332-A1 (DE)
Title: HI=FI audio loudspeaker housed in seat - incorporating sub-woofer system, amplifier, frequency distribution device and volume and balance controls
Inventor: GRUSCHKA PETER
IPC: H04R5/02
Filed: 1991-06-19
Abstract: A radio and/or cassette player and/or compact disc player may be incorporated in the seat. The loudspeaker system can be operated from a 12V battery supply or from a 110 or 240V mains supply. Pref., two medium/high tone loudspeakers having a cylindrical radiation characteristic lie on either wing of the seat to provide good audio characteristics independently of the sitting height. ADVANTAGE - Good sound reproduction in compact space. Can be placed anywhere: home, waiting room, record shop, conferences, giving comfort without concern for sound distribution.
Patent DE-4120377-A1 (DE)
Title: Shaft for planet-roll extruder for easy exchange of worn parts - has driven sleeves mating with planet rolls and driven by central shaft, esp. with constant-thickness profile
Inventor: AMMON GUENTER
IPC: B29C47/42
Filed: 1991-06-20
Abstract: This is formed as a shaft integral with or fixed to the main screw, and on which are carried sleeves with outer profiles mating with the planet rolls. The sleeves are clamped axially by a conical nut screwed to the shaft, and are driven from the shaft by a mating profile, esp. so called `constant thickness profile', including three-cornered (three-lobed). USE/ADVANTAGE - Shaft for planet-roll extruder. Provides separate wearing parts detachable from main shaft. Facilitates exchange of worn sleev
Patent DE-4120718-A1 (DE)
Inventor: VOEGELE ROLF
IPC: B42F13/24
Filed: 1991-06-22
Abstract: The invention relates to a mechanism for a letter file, having a baseplate (10) made of sheet metal, two sorting pins (12) which project vertically above the baseplate, a folding bar (18) which is limitedly pivotable on the baseplate (10) between an open position and a closed position, an end shield (20) which projects above the baseplate (10) and is joined integrally thereto, and an actuating lever (22) which is mounted pivotably in a bearing point (24) of the end shield (20) and acts directly or indirectly on the folding bar (18). To guarantee efficient and inexpensive production, a hollow peg (30), which projects vertically above the plane of the end shield, is moulded by deep-drawing into the end shield (20), while the actuating lever (22) is mounted pivotably directly on the hollow peg (30) and is secured against being pulled off axially from the hollow peg (30). In this case, the hollow peg can serve as a bearing peg for a bearing bore (32) arranged on the actuating lever or as a bearing bush for a bearing peg (42) moulded onto the actuating lever (22). For axial securing, either the hollow peg or the bearing peg moulded onto the actuating lever (22) is to be expanded radially or thickened in the course of the lever assembly, forming a corresponding thickening. <IMAGE>
Patent DE-4125592-A1 (DE)
Title: Tuning HF source esp. microwave of electron spin resonance spectrometer - sweeping frequency through defined region and setting absorption point in centre of region
Inventor: SCHMALBEIN DIETER DR
IPC: G01R33/60
Filed: 1991-08-02
Abstract: Tuning a h.f. source (61) to a narrow-band component (62) involves periodically sweeping the frequency of the signal fed to the component through a defined sweep region, detecting a signal corresp. to the signal power absorbed by the component and representing it graphically. The signal is displayed over the sweep region so that the power absorption region is shown as a mark. The fundamental frequency is adjusted to set the mark in the centre of the sweep region. The output of the high frequency source is mixed with a sweep signal to sweep it across the sweep region. USE/ADVANTAGE - Esp. for tuning electron spin resonance spectrometer microwave source to a resonator. Increased sweep range is achieved by purely electrical means for tuning to resonators with very lossy specimens.
Patent DE-4127147-A1 (DE)
Title: Mobile multipurpose shelter assembly - incorporates folding frame members with roller-blind type roof
IPC: E04H15/58
Filed: 1991-08-16
Abstract: The shelter is formed from folding cross section frames.  The height and width of the framing being variable to suit various purposes. Roofing is a material stretched over the frame, the material is stored on a roller and controlled by a winch handle and series of pulleys. The shelter is secured to the ground through stakes driven through two ground plates.  When a vehicle is being kept in the shelter, the tyres are placed on the ground plates for additional anchorage. USE/ADVANTAGE - Folding shelter is easy to transport.
Patent DE-4136344-A1 (DE)
Title: Treatment of refuse gas contg. hydrocarbon(s) - for use as fuel in gas engine driving electric generator
IPC: B01D53/14
Filed: 1991-11-05
Abstract: Prepn. of a flow of refuse-damp gas, contg. hydrocarbons, is for combustion in energy-supply equipment, in partic. gas-engine driven generators. The gas goes through a water separator. The refuse-gas is treated in an absorption column in which a fuel oil is used as the absorption agent with which harmful gaseous substances, in partic. Si cpds., in the refuse-gas can be removed. The gas is pref. drawn from the dump (1) by the compressor (2) and drawn through the water separator (3), from which the water can be continuously or otherwise discharged through the valve (4). USE/ADVANTAGE - A cost-effective method for preparing such gas for use in energy-supply equipment is offered with which harmful gaseous substances can be removed with practically no redn. in hydrocarbons.
Patent DE-4139279-A1 (DE)
Inventor: WILBERT BRUNO
IPC: F16B5/06
Filed: 1991-11-29
Abstract: The invention relates to a device with at least two one-piece display tables (2, 3) consisting of flexible material which are clamped at at least two edges in a special clip (4 or 5, 6) and are tightly stretched by a tensioning device (11, 16, 17; 12, 14, 15). The two display panels (2, 3) share one clip (4). The other clips (5, 6) are interconnected via a spacer (7).
Patent DE-4142664-A1 (DE)
Title: Planar power semiconductor with protective ring structure - has two concentric rings obtained by diffusion process with doping concentration increasing moving inwards from outside
Inventor: ELSTNER LOTHAR DR
IPC: H01L29/06
Filed: 1991-12-19
Abstract: The power semiconductor has the protective ring structure divided into two concentric zones (3, 4) enclosing the controlled pn junction (2) formed in the surface of the semiconductor chip (1), with the doping concentration gradually increasing from the outside inwards. Pref. the ring zones (3, 4) are provided by a diffusion process using a SiO2 mark, to provide a surface doping concentration of 10<17> cm<-3> and a penetration depth of 35  mu m, each zone incorporating further diffused zones (7, 8) of different doping concentration and penetration depth. ADVANTAGE - Improved voltage blocking characteristics without increased size.
Patent DE-4201945-A1 (DE)
Title: Sleeper shoe for flexible positioning of rail support sleepers - uses adhesive strips on at least one side of the shoe
Inventor: BUCHINGER HANS PETER
IPC: E01B1/00
Filed: 1992-01-24
Abstract: The adhesive strip (2) is fitted to at least one of the sleeper shoes (1) long sides (1b), close to the upper edge (1c). The strip (2) is formed as part of the long side (1c), forming a single unit with the sleeper shoe (1). The adhesive strip (2) can be applied to each of the sleeper shoes long sides (1c). At one end of the adhesive strip (2), an eye (3) and fastener clamp and hold the sleeper in place. An additional adhesive strip (7) together witha hook shaped clamp (8) is located on the head of the sleeper shoe. The strip and sleeper shoe are made from elastomer material, the strip being of a more flexible elastomer than the sleeper shoe. ADVANTAGE - The sleeper shoe is easier to use and can be fitted by one person.
Patent DE-4202095-A1 (DE)
Title: Vol. redn. of scrap plastic and process machinery - by pelletising oriented thermoplastic and heating to promote shrinkage in single transportable machine
Inventor: STRICKER URBAN DIPL ING
IPC: B29B17/02
Filed: 1992-01-27
Abstract: Scrap plastic material is introduced into a machine which reduces the volume and density to permit easier storage and transport. Material property changes caused by shrinkage during heating allow easy sepn. of different materials. Also claimed is a process for sorting different types of thermoplastic pellets e.g, non-shrinkable from shrinkable or separating unwanted materials e.g, paper from plastic. Higher density, shrunk thermoplastics are easily separated using e.g, sieving or flotation. Process machinery contains high speed mills or hammers for size reduction and an integral heating section for polymer shrinkage. The machine is compact and portable. USE/ADVANTAGE - The process and machine are used for volume reduction and sepn. of scrap plastic esp. oriented materials. The machine is portable allowing easy transport to the source of scrap plastics. Transport costs of scrap plastic are reduced. Easy sepn. of oriented from non-oriented material is realised
Patent DE-4202910-A1 (DE)
Title: Thermal overload protection relay e.g. for electric motors - is separated from function unit and connected to fuse which is disconnected from coil when overloading occurs
Inventor: TRINKS HAGEN DIPL ING
IPC: H01H83/20
Filed: 1992-02-01
Abstract: The functional unit (5) is for command and reporting devices, especially a command device programme for monitoring, condition analysis and control of a thermal overload relay (3) separated from the block (5) and electrically and mechanically connected to a fuse (2).This analyses the switching state of an open contact (3.2) of the relay (3). The exciting current of the coil (2.1) of the fuse (2) is cut off when overloading occurs and/or upon occurrence of a signal for a remote display or current condition display and/or adjustment of manual or automatic return of the relay (3). USE/ADVANTAGE - Especially for protecting e.g. three-phase electric motors. Remote functions can be easily varied, controlled and monitored. Simple to operate and maintain.
Patent DE-4204844-A1 (DE)
Title: Voltage or current control of thyratron for gas-laser switching - determining error pulse rate or repetition rate of gas laser and setting operating voltage or current accordingly
Inventor: REBHAN ULRICH DR
IPC: H03K17/52
Filed: 1992-02-18
Abstract: The laser (10) is pulsed by application of voltage to its discharge electrodes (12,12') from a pulse generator (16) triggered by the thyratron (Th) whose operation depends critically on the cathode heater voltage (UH) and the heating voltage (UR) applied to its gas reservoir. These voltages are varied with the firing angle by a phase control circuit (20) feeding a transformer (22), rectifier (24) and buffer (26). A regulator (28) compares the instantaneous voltages with prescribed values stored in a central control unit (30). A trigger unit (32) acts on the grid (Gi) of the thyratron in response to signals from an optical pulse sensor (38). USE/ADVANTAGE - For TEA-CO2 and excimer lasers. Operation of laser is improved and lifetime of thyratron is prolonged.
Patent DE-4214975-A1 (DE)
Inventor: KEESMANN TILL
IPC: H01T19/00
Filed: 1992-05-06
Abstract: Device for changing the electrostatic potential of a surface formed from an insulating material, with the aid of an electrode whose active surface contains fullerene molecules. <IMAGE>
Patent DE-4217376-A1 (DE)
Title: Laundry dryer with reversingly rotating drum - uses microwaves to aid in the drying process
Inventor: ACHTERBERG PETER
IPC: H05B6/80
Filed: 1992-05-26
Abstract: A laundry dryer incorporates a reversingly rotating drum driven by a motor. Onbe or several microwave transmitters are located in appropriate positions near the washing. The drum is made of a microwave-permeable material so that the microwaves can reach and penetrate the damp washing without resistance. ADVANTAGE - The dryer permits a quick drying of the washing with low energy costs.
Patent DE-4224232-A1 (DE)
Inventor: NERI ARMANDO
IPC: B65H31/34
Filed: 1992-07-22
Abstract: A stack 5 of blanks 2 is held between presser element 19 and support 18 of a transporting head 11, 22, 18 and is thus delivered to a stationary abutment element 25 positioned adjacent a packaging machine (figure 1). The pressure at 19 is then relaxed and the transporting head is further moved so that formations 23 act on edges 2b of the blanks to press edges 2a against the abutment element 25 and thus align the blanks. <IMAGE>
Patent DE-4226261-A1 (DE)
Title: Multipurpose packaging for transport of shock-sensitive articles - consists of flat flexible panels of fibrous matting with loops compatible with hooks on rapid-bonding strip
Inventor: PLOCH SIEGFRID DR
IPC: B65D85/68
Filed: 1992-08-08
Abstract: The article is protected by a top cover and four side panels all mfd. of unwrapped elastic fibrous material with matting (10, 13) on one side and loops (11, 14) on the other. The cover and panels are bonded together by flexible strips (6) of tape (7) with hooks (8) upstanding at right angles from one side for engagement in the fibre loops which are similarly spaced. After unpacking of the article, the fibrous panels and tapes can be folded away for re-use. USE/ADVANTAGE - For e.g. washing machines, refrigerators and television sets, material can be used repeatedly in various ways and is fully suited to recycling.
Patent DE-4229980-A1 (DE)
Title: Travel wind allocator for motor vehicle - involves ventilating grill of unit size made of plastics material and fitted in specially formed plastics frame
Inventor: HAHN HELMUT
IPC: B60J1/20
Filed: 1992-09-08
Abstract: The travel wind impacting the outside of the vehicle is picked up and controlled-fed through the ventilation grill which is rotatably and pivotably located in the frame (RA), reaching the vehicle interior, providing all passengers with the effect of the travel wind. The ventilating grill in the frame (RA) is located rotatably (horizontally) and pivotably (vertically). The ideal pivot range, both for rotating and pivoting, is approximately 90 deg. The ribs on the outside of the ventilating grill extend slightly against the direction of travel at an angle still to be determined in order to conduct the passing air optimally and quietly. The ventilating grill with its frame (RA) can be clamped into a side window or in an opened sliding roof, and when the car is left, even for a short time, can easily be removed. USE/ADVANTAGE - To ventilate interior of car in controlled and comfortable manner, partic. in conditions of hot weather.
Patent DE-4230700-A1 (DE)
Title: Cleaning mechanism used in drainage canals - incorporates blocking or damming devices controlled to swirl water to obtain cleaning effect
Inventor: KUPCZIK GUENTER DIPL ING
IPC: B08B9/02
Filed: 1992-09-14
Abstract: Two neighbouring blocking devices are brought into the blocking position. After the blockage of one channel section, the upstream side of the blockage has a determined amount of water which is controllably let to flow through after the blockage. A whirlpool is formed downstream of the blockage by the influx of water when that upstream is let through. After complete flow through, the downstream side of the device is then partly filled with waste water and the downstream side then becomes the upstream side in order to reverse the flow and obtain an enhanced cleaning effect. USE/ADVANTAGE - Cleaning mechanism used in drainage canals removes incrustations from walls by creating whirlpools of water.
Patent DE-4231887-A1 (DE)
Inventor: SCHOENFELDE HANS-JUERGEN DIPL
IPC: D01H9/16
Filed: 1992-09-21
Abstract: A process for cutting rovings when drawing out bobbins from roving frames is useful in the spinning industry, in particular for producing rovings. The rovings are cut without interrupting thread supply, the pressing finger is moved out of the winding stroke of the last layer, the roving is rotated more rapidly and the consolidated roving is moved into the flyer. The roving is slackened by turning backwards the bobbins and the bobbin rail moved into the drawing out position. When the disclosed process is used, the roving is torn at the exit of the flyer and an automatic spinning can be started without changing known components of the machine.
Patent DE-4235455-A1 (DE)
Title: Electrical safety device, esp. for toothed belt drives - uses steel tensioning chords as conductors in closed circuit to enable detection of mechanical defects
Inventor: MIETHE HARALD DIPL ING
IPC: F16P7/02
Filed: 1992-10-21
Abstract: In the electrical safety device, steel tensioning chords embedded in the belt material parallel to the sides of the belt are used as electrical conductors. Pref. the ends of the outer two chords (12,13) are connected together to form a closed circuit. The circuit, which effectively extends over the entire length of the belt, is combined with a controller so that if the belt is mechanically damaged its drive is immediately immobilized and an audible and/or visual warning is given. USE/ADVANTAGE - E.g. for machinery in which toothed belt drives are used to transfer large forces. Timely indication of mechanical belt defects is used to prevent accidents arising from belt failure.
Patent DE-4239269-A1 (DE)
Title: Consolidation of large mud deposits - involves geo-textile screen with similar hoses along edges, which are filled with heavy material
Inventor: KASSNER JUERGEN
IPC: C07D249/12
Filed: 1992-11-23
Abstract: The two edges of the geotextile water-permeable screen (1) extending parallel to the installation direction, have water-permeable geotextile hoses (5,6). The hoses are closed at one end. During and/or after installation of the screen, the hoses are filled with a material, which is specifically heavier than the mud to be consolidated. The material is flushed/pumped via flushing dredgers, mortar pumps etc. into the hoses. Similar hoses are also located on the leading/trailing edges of the screen. During or after installation, these hoses are filled with a material to weigh them down. The screen consists of two or more prefabricated sections. Each of these consists of several connected geotextile lengths. These are connected on a working platform, to previously installed sections. USE/ADVANTAGE - Consolidation of mud deposits above and under water. The geotextile screens can consolidate large areas,  and do not require edging etc.