baber/WOPTO huggingface dataset:
Patent DE-3836551-A1 (DE)
Title: Press, in particular rivet press for attaching snap fastener parts to a carrier with a holding tool for correct positioning of a snap fastener part
Inventor: BUETTGEN THEO
IPC: A41H37/04
Filed: 1988-10-27
Abstract: In a press of this type, holding tools are used on the top and bottom dies which can be moved towards one another and ensure correct positioning of a functional part of the snap fastener, such as a male part of the snap fastener, and an attachment part, such as a hollow rivet. For more simple, less expensive production and for improved positioning of a male part of a snap fastener in such a holding tool, it is proposed to provide the central cavity in the holding tool, in which the closing head of the male part is positioned, with a radial internal groove and to arrange spring parts therein in an annular fashion, which spring parts simultaneously take on the function of forming holding members for engaging behind the closing head. These are advantageously designed as a circular, slotted spring ring.
Patent DE-3843541-A1 (DE)
Title: Positionally precise rapid attachment of flexible printing plates
Inventor: JENTZSCH ARNDT DIPL ING
IPC: B41F27/12
Filed: 1988-12-23
Abstract: The object of the invention, to provide a rapid tensioning device for flexible printing plates which allows conversion from manual actuation to automatic actuation with little expenditure, is achieved in that the tensioning device is assigned a draw key transmission consisting of a draw key supported resiliently on the tensioning rail and on rollers arranged in a drawing rail, and a draw key is assigned in each case to the upper clamping rails which are arranged adjacently around a plurality of hinge points and can be actuated one after the other by a common draw key transmission.
Patent DE-3843616-A1 (DE)
Title: Seat, in particular motor-vehicle seat
Inventor: BEERBAUM PETER
IPC: B60N2/04
Filed: 1988-12-23
Abstract: A motor-vehicle seat (1) comprises a seat part (2) and a backrest (3) with a head restraint (12), the two supporting rods (11) of which are releasably fastened to a slide (13). The latter is guided in a sliding manner by a receptacle (14) which is mounted on the lower side of a frame transverse part (3') and protrudes downwards from the latter. By means of a Bowden cable (15) which is secured to the seat part (2) and the wire cable (15') of which engages on the slide (13), the head restraint (12) is kept in its position (d) as the seat part (2) is being shifted from the high position (a) into the low position (b). <IMAGE>
Patent DE-3900414-A1 (DE)
Title: Method for conveying a web through a transverse cutting device and a drum cutter
Inventor: VOSS JUERGEN DIPL ING
IPC: B26D7/08
Filed: 1989-01-09
Abstract: When webs are conveyed through a drum cutter, there is an unfortunate tendency, in the case of thin elastic webs, for the start of the web brought about by cutting action to remain sticking to the lower cutter owing to a lack of inherent rigidity and to circulate with the said cutter. In order to prevent this, it is proposed that shortly after termination of transverse cutting, the cut-off start (15) of the web be raised from the lower cutting blade (4) and be deposited on a conveyor (12) arranged downstream while the forward movement is continued. To achieve this there are used on the lower cutter drum (2), looking in the direction (17) of rotation, there is situated a lifting device (5) immediately downstream of the cutter (4), which device (5) projects after cutting beyond the envelope curve (8) which is generated during rotation of the cutter (4) of the lower cutter drum (2). <IMAGE>
Patent DE-3901207-A1 (DE)
Title: Valve arrangement for several hydraulic drives, in particular for the drives of a crane
Inventor: GRUENERT JOERG
IPC: F15B11/16
Filed: 1989-01-17
Abstract: In a control block with several directional control valves and allocated pressure balances as well as pressure-relief valves, an input element with a pressure-reducing valve for the control-oil supply and a regulating valve is provided, which is acted upon by the pressure difference between pump pressure and maximum load pressure and which individually lowers the control pressure introduced in a controlled manner at the pilot-control valves for the actuation of the directional control valves in order to first of all reset the directional control valves controlled to the greatest extent if there is insufficient hydraulic supply to the system in order to reduce the feed to the allocated drive. This control block is connected to a variable-displacement pump, and a further control block for actuating a further drive is connected to a fixed-displacement pump. This control block is provided with a pressure-dependent valve for load-independent control. A better supply of working medium to the drives is obtained overall and the motivity of the drives is maintained even in the event of insufficient supply.
Patent DE-3913872-A1 (DE)
Title: Phase difference measuring appts. for phase modulated equipment - employs frequency division and multiple comparator modules to extend system range and accuracy
Inventor: BRANDT DIETER DIPL ING
IPC: G01R25/00
Filed: 1989-04-27
Abstract: The method of determining the phase separation between pulses in phase modulated equipment employs frequency division (7,8) and multiple phase comparators (9 to 12) to extend the measurement system range and accuracy.  An even number of successive pulses are monitored by an equivalent number of comparators (9 to 12) and compared with fixed reference pulses. The comparator modules (9 to 12) are of basic digital design employing cating or flip-flop circuits with suitable low-pass filters for minimising HF noise components and their respective outputs are summed in an additive module (13). USE/ADVANTAGE - All types of standard digital phase comparator are suitable system sensitivity is increased in direct proportion to number of comparator modules in use.  Four modules are recommended to compromise with cost.  Spurious signal components are suppressed steep slope filters unnecessary allowing wider frequency boundaries response linearity and speed improved for fast moving changes.
Patent DE-3918740-A1 (DE)
Title: Nozzle for water jet cutting - has surrounding annular air intake to create air film barrier between water jet and main nozzle
Inventor: LAMMERS ALBERT
IPC: B26F3/00
Filed: 1989-06-08
Abstract: To reduce the friction of the high velocity water jet against the nozzle wall it is desirable that there should be an air film between the jet and nozzle. This is achieved by surrounding the  nozzle (I) with a larger nozzle (II) which draws in air through the opening (V) and compresses it into the annular space (XI). The compressed air enters the nozzle (I) through a set of orifices (III) and creates a spinning film of air separating the water jet from the nozzle wall. USE/ADVANTAGE - Water jet with increased cutting efficiency and reduced nozzle wear.
Patent DE-3921872-A1 (DE)
Title: Device for limiting chains of supermarket trolleys - has roller chain to take certain amount of trolleys
Inventor: FUCHS PETER
IPC: G07F17/10
Filed: 1989-07-04
Abstract: The device restricts the length of rows of shopping trolleys.  It comprises a freely movable roller chain (1) which is mounted in a housing and is guided in specific contours. The roller chain can be moved forwards and backwards respectively with the engagement of an external moulded part on the trolley into the predetermined intervals of the slide rollers.  As the last moulded part locks no further moulded part can pass into the now immovable roller chain.  The design is especially for use with coin-returnable trolley locks. USE/ADVANTAGE - Only a certain number of trolleys can be accommodated so that overlong rows of trolleys are prevented which could project into the roadways.
Patent DE-3922365-A1 (DE)
Title: Contactless measurer for lengths and length changes esp. of rails - uses light source, paralleling lens, deflectors, receiver in housing and reflectors on object
Inventor: BECHSTEIN KARL-HEINZ DIPL PHYS
IPC: G01B11/16
Filed: 1989-07-07
Abstract: Two or more measurement markers or reflectors on the measurement object are illuminated by a light source via optical element elements. The markers are separated by a defined distance within a measurement region. a thermally invariant plate (4) is rigidly mounted on a frame (1) or bed of a measurement device. The plate is enclosed by a housing (3) and carries a holder (6) for the light source (7), a parallelising lens (8) and a beam divider (9). Deflection elements (10,11), the reflectors (12,13) and a photoelectic receiver (25,26) are mounted on the plate at a constant distance defining the measurement region and correlated with the reflector distance. The reflectors are associated with at least one position or beam orientation sensitive photo-electric receiver. USE/ADVANTAGE - High degree of reproducibility of results and enablesautomatic measurement.  Ascertaining changes caused by loading. e.g. effects of external temp. or force. Establishing tension-expansion relationship, creeping, diminution or heat expansion of materials and objects, partic. in building construction.
Patent DE-3924146-A1 (DE)
Title: Joke knife with disappearing blade and dye container - has acoustic generator producing special effects in conjunction appearance of blood during simulated stab
Inventor: AUGUSTIN HANS-ULRICH
IPC: A63H37/00
Filed: 1989-07-21
Abstract: The blade is pushed back against the pressure of a spring into a recess in the handle which contains a plastics reservoir of coloured liq., dispensed by rollers or brushes on to the blade while it is retracted. A microprocessor-controlled acoustic generator is activated through a switch or key, either by hand or by pressure on the point of the blade. USE/ADVANTAGE - As practical joke or theartrical property. Damage to skin or clothes is avoided by use of opaque, highly viscous and non-wetting liq. instead of real dye.
Patent DE-3924574-A1 (DE)
Title: Carburising briquette for molten steel
Inventor: OKOCHI MIKIYOSHI
IPC: G01M1/04
Filed: 1989-07-25
Abstract: A carburising briquette has specific wt. more than 2.6 and is composed of powdered pig iron mixed with carbon powder 10-30 wt.% and binder in suitable amt. The pig iron is prepd.  from various kinds of slag produced in iron or steeel making.
Patent DE-3927707-A1 (DE)
Title: Auxiliary scraper  following cake cutter in centrifuge drum - held in resilient contact with the residual layer
Inventor: FISCHER EDUARD
IPC: B04B11/08
Filed: 1989-08-22
Abstract: The cake of solids accumulating on the surface of a filter layer lining the apertured casing of a rotary centrifuge drum as periodically detached by a cutter blade pivotable into close contact with the filter surface and movable to cover progressively the entire drum interior. Following on the cutter blade in the rotational direction of the drum is an auxiliary mechanical scraper resiliently held in contact with the filter surface and of similar length. Possible scraper forms include a U-shaped wire loop incorporating a helical spring, with the wire 1-5mm in dia.; inclined blades mounted at different angles in rows on a support and formed of plastic, or metal with plastic cladding; a rotating worm; or bristles projecting from a cylindrical support. USE - Dimensional variations keeping the cutter  somewhat spaced from the filter leave a thin residue which can develop into a hard skin unless scraped away.
Patent DE-3934904-A1 (DE)
Title: Steel sheet laminated with resin film
Inventor: TANAKA ATSUO
IPC: B32B15/08
Filed: 1989-10-19
Abstract: Pdn. of a surface-treated steel sheet laminated with a copolyester film(1) comprises (a) forming the film from a copolyester resin (A), (b) precoating the film on one side with a resin composite(B), (c) heating a surface-treated steel sheet to + 50 deg. C of the m.pt. of the film, and (d) laminating the film onto both sides of the steel sheet so that the side of the film precoated with (B) contacts the steel sheet. (A) comprises 75-99 mole % PET and 1-25 mole % polyester resin prepd. by esterification of at least one satd. polycarboxylic acid and at least one satd. alcohol. (B) contains in its structure at least one of an epoxy, hydroxyl, amide, ester, carboxyl urethane, acryl and amino radicals. Pref. amt. of ) (B) is 0.1-5.0g/m2 after drying. (1) pref. has a thickness of 5-50 micron, a softening temp. of 170-235 deg. C, a melting temp.  of 210-250 deg. C and an elongation at break of 150-400%.
Patent DE-3934933-A1 (DE)
Inventor: ARNOLD KURT DR
IPC: D05B69/00
Filed: 1989-10-20
Abstract: In a process for perfect optical detection, by means of a light barrier (11-19), of any edge (30) of a workpiece (1, 2), even when the workpiece has pronounced inhomogeneities, an equalization device (22, 23) measures the extreme values of the fluctuations in the light measurement signal (U) due to these inhomogeneities when the workpiece is moved relative to the detection site of the light barrier before the edge is detected. Further, an information (R) concerning the direction in which the measurement signal (U) can be expected to deviate when the edge appears is input. The equalization device then sets a threshold value (US) greater than the extreme value located in the same direction. An edge-detection signal (K) which indicates the appearance of the edge at the detection site is produced immediately the measurement signal (U) exceeds this threshold value.
Patent DE-4001572-A1 (DE)
Title: Versatile kitchen unit system - is optionally free-standing and has common installation block and different work-top fitments
Inventor: KODET JUERGEN
IPC: A47B77/02
Filed: 1990-01-20
Abstract: The built in kitchen cupboard system comprises several modules in the form of identical lower frames (7). These are set side by side and can be freestanding or bordered on the room wall side to form a work block (1). The lower frames (7) are provided with different top modules (8) such as sinks, cooker hobs, drawers or worktops and can be combined to form separate ready to install function units (2) with different and similar height work planes (3). A common installation block (4) is associated with the function units (2). USE/ADVANTAGE - A more flexible kitchen system adaptable to different needs.
Patent DE-4001771-A1 (DE)
Title: Roller-shutter or multipurpose security alarm equipment - housed in cigarette-packet-sized casing clamped to belt with actuator of electrically-powered or clockwork acoustic alarm generator
Inventor: STANETZKI LOTHAR ING GRAD
IPC: G08B13/08
Filed: 1990-01-23
Abstract: The shutter is operated by a belt (5) carrying a clamp (2).  A battery-powered electric motor- or clockwork-operated alarm bell or siren is fitted to an upper part (1) to which the underlying clamp (2) is hinged (3). A contact slider (6) easily movable in the axial direction has a bore (7) at its upper end and carriers a ratchet lever (9) cooperating with a toothed wheel (8).  Undesired triggering of the alarm is preventable by a rocking lever or rotary switch (10). ADVANTAGE - Can be mounted without special skill, and even by infirm-or handicapped householders.
Patent DE-4002316-A1 (DE)
Inventor: HORIE MISATO
IPC: G21F9/06
Filed: 1990-01-26
Abstract: A method of treatment of a high-level radioactive waste 24 comprising heating the radioactive waste at a high temperature to vaporize part of elements contained in the radioactive waste, and cooling the resultant vapor to collect the elements. In one embodiment, the heating step is replaced by a reduction-heating step wherein heating is carried out in the presence of a reducing agent, e.g. hydrogen. In another embodiment, the heating step may be followed by the reduction- heating step. The waste may be calcined material obtained by heating the nitric acid solution generated from reprocessing of spent nuclear fuels. <IMAGE>
Patent DE-4002646-A1 (DE)
Inventor: WILHELMS ROLF E DR
IPC: G11B31/00
Filed: 1990-01-30
Abstract: Device or arrangement for recording video and/or audio information having at least one receiving and recording device and a connected or integrated additional audio and/or video information storage device of limited capacity, of 2 to 10 min, preferably 3.5 to 6.5 min, which begins storage of the received information when the receiving device is put into operation and stores the said information in the sequence of reception for the storage period corresponding to the limited storage capacity and erases or discards it in the sequence of its storage, and correspondingly fills the storage space with the continuously received information and, at the beginning of storage known per se on recording material known per se (audio tape cassettes, video cassettes) either stops or re-records the received information continuously on the recording medium known per se offset in time by the period corresponding to the limited capacity of the intermediate storage device.
Patent DE-4003633-A1 (DE)
Title: Vehicle IC engine air intake system - has auxiliary suction line replacing main suction intake for warm starting of engine
Inventor: SCHMIDT WERNER DIPL ING
IPC: F02M5/10
Filed: 1990-02-07
Abstract: The air intake system has a main suction line (2) containing an air filter (2b) leading to a carburettor (4), in turn coupled to individual suction pipes (5a,..5d) for the engine cylinders.  An auxiliary suction line (3) allows atmospheric air to be fed to the main suction line (2) infront of the carburettor (4), the main line (2) being closed and the auxiliary suction line (3) opened via a common control (6) in response to operation of the engine ignition switch (20). Pref. an auxiliary air filter (23) is fitted to the front of the auxiliary suction line (3). ADVANTAGE - Facilitates warm starting of i.c. engine.
Patent DE-4004203-A1 (DE)
Title: Electronic manual dexterity game - records each time one player is able to strike hand of opposite player
Inventor: MANTEL JUVAL DR ING
IPC: A63F9/00
Filed: 1990-02-12
Abstract: The electronic manual dexterity game provides externally visible light signals and/or audible signals when one game partner strikes the hand of the other game partner a given number of times etc. A push-button switch which registers each strike is connected in circuit with an electronic circuit for tone or light signal amplitude modulation logic circuits and number and time counting circuits, e.g. allowing the score of each player to be recorded and displayed. The game can be linked to a processor and/or printer. ADVANTAGE - Tests reaction time and hand movement response.
Patent DE-4019666-A1 (DE)
Title: Servo synchronisation circuitry with phase and frequency detectors - feeds frequency detector oscillator output signal directly to 2 memories and phase-shifted to other 2 memories
Inventor: BIRTH WINFRID DIPL ING
IPC: H04L7/033
Filed: 1990-06-20
Abstract: Behind a phase (PD) and a frequency detector (FD) respective loop filters (HP,HF) are coupled, whose output signals control the enclosed oscillator. The oscillator output signal is supplied directly to two memories (S1,2), and to two further memories (S3,4) with a 90 deg. phase shift. Behind the four memories four more memories (S5-8) are connected with specified input signal (IN) supply. The specified memory output signals are fed to AND-gates (U1-4). The output signals from the latter are supplied OR-gates (Q1-3). The oscillator is controlled by the sum of the output signals of both loop filters. USE/ADVANTAGE - Digital signal transmission. Reduced number of equalising steps.
Patent DE-4020251-A1 (DE)
Title: Concrete additive moisture determn. by changed drive load - after specific cement addn. permits precise mixt. control
Inventor: VALA JAN
IPC: B28C7/04
Filed: 1990-06-26
Abstract: While concrete is being mixed, a defined min. amt. of cement is added, and the difference between mixer drive laoding before and after the addn. is recorded. From an algorithm the mean amt. of moisture in the additive is calculated and used in controlling the total amt. of added water, and making any necessary changes in the concrete mixt. Precision is normally within 0.5%. Typical formulae for a laboratory mixer are given. ADVANTAGE - Concrete mixt. is held within desired proportions.
Patent DE-4021081-A1 (DE)
Title: Hollow flat building component - comprises rigid plates held apart by distance pieces
Inventor: DEMUTH MICHAEL
IPC: E04C2/34
Filed: 1990-07-03
Abstract: The hollow flat component is for the construction or cladding of sections of buildings. It comprises two or more rigid plates  (1) one above the other and held apart by distance-pieces (2) extending for only part of the width and height of the component. The distance pieces form intervening spaces (3) for the flow of air etc., and the plates are open along the edges. The pieces can be formed by short columns, of round or polygonal cross-section. USE/ADVANTAGE - Hollow flat component is used for drying or insulating external building walls, and is easily produced and installed.
Patent DE-4022884-A1 (DE)
Title: Plastic bottle crate - has handle core and outer portion with different degrees of hardness
IPC: B65D1/46
Filed: 1990-07-18
Abstract: The plastic bottle-crate has one or more carrying handles.  Each handle comprises a core, round which an outer portion extends on the underside at least, the two being of different degrees of hardness. The outer one can be of soft plastic giving a comfortable grip, typically polyurethane or polyethylene, being sprayed or formed as foam on the hard core, whose surface can be roughened. ADVANTAGE - Easy handling and cleaning and low cost.
Patent DE-4029786-A1 (DE)
Inventor: BOEHMER BRUNO
IPC: B24C3/14
Filed: 1990-09-20
Abstract: The invention proposes a method for manufacturing bright steel, especially bright round steel bars produced from hot-rolled steel, according to which the round steel bars are rounded to narrow tolerances in a sizing mill from the rolling heat, the oxide layer on the round steel bars is largely removed and the round steel bars are then subjected to a straightening and polishing process.
Patent DE-4031676-A1 (DE)
Title: Surface treatment of silicon@ wafer by electrochemical etching in dark - includes monitoring of etching progress to produce reproducible surface conditions for subsequent applications
Inventor: LEWERENZ HANS-JOACHIM DR RER N
IPC: H01L21/3063
Filed: 1990-10-04
Abstract: The Si surface is etched anodically in a fluoride containing soln., pref. a watery soln. of NH4F with a pH of 3.5-5.5, of watery HF soln. or a watery soln. of a fluoride salt, in the dark, while electrostatically the reaction progress is checked by continuous measurement of parameters which each define a physical condition of the Si surface. The parameter values are constantly compared with required values and the Si wafer isolated when a predestined condition has been achieved. The wafer is then given a further treatment with liquid or gaseous reagents, pref. consisting of rinsing, pref. using water, under a shielding gas, pref. N2 or Ar. The wafer is thend ried in N2. The etching takes place pref. in an electrostatic or galvanostatic circuit. The counter electrode used (4) is pref. a net or gauze. Also claimed is the use of an etchant which is in continuous movement. USE/ADVANTAGE - The etching process can produce predefined surface conditions of the Si wafer which can be verified with other analysis methods such as X-ray photoelectron spectroscopy (XPS) or other optical methods. The process is capable of removing the oxide layer without generating defects in the Si surface. The process increases the yield of usable wafers and of devices made with them. The conditions can also be modified to generate e.g. very smooth of rough surface textures. The process is used in the mfr. of wafers for production of electronic devices e.g. transducers, integrated circuits or solar cells.