baber/WOPTO huggingface dataset:
Patent DE-3935789-A1 (DE)
Title: Reciprocating piston IC engine - has crank housing charging air pumps and has exhaust-driven air compressor
Inventor: DONKOV DANCHO ZOCHEV DIPL ING
IPC: F02B33/44
Filed: 1989-10-27
Abstract: The two/four stroke engine has crank housing charging air pumps.  It has a pressurised oil lubrication system connected to an oil sump in an oil pan. There is at least one exhaust gas driven air compressor (9.1), located between the charging air pumps (20) and the oil trap (43). The air compressor at least partially takes on fresh air through the crank chamber. USE/ADVANTAGE - IC engine with reduced oil consumption during piston lubrication, and reduced thermal load on crank chamber.
Patent DE-3938233-A1 (DE)
Title: Compsns. for treating venous inflammations - contain specified enzymes, microorganisms or plant extract
IPC: A61K35/747
Filed: 1989-11-17
Abstract: Compsns. for treating venous inflammations (haemarrhoids and varicose veins) contain one of the following (a) pepsin, (b) papain, (c) Saccharomyces cerevisae Hansen CBS 5926, (c) 'Cholagogum N Nattermann' (RTM) a plant extract contg.  2.5% celandine 7.5% turmeric and 0.18% peppermint: oil, (d) viable spores of Bacillus IP 5832 (ATCC 14893) (e) a combination of Lactobacillus acidophilus, L. bifidus and E. coli (f) 'Topfer' (RTM) bifido bacteria culture (g) Lactobacillus acidophilus (h) a combination of pepsin and papain in an enteric coating, (i) a combination of pepsin and microorganisms in an enteric coating, or (j) a combination of papain and bromelain in gastrosoluble form.  The compsns. are administered orally three times a day before meals.
Patent DE-3942408-A1 (DE)
Title: Shaft dry gas seal - has flexible sealing ring between seal body and socket on shaft
Inventor: SCHMIED JOACHIM DR ING
IPC: F16J15/44
Filed: 1989-12-21
Abstract: The dry axial gas seal is for a rotary shaft (1) passing through a housing wall (2). A socket (3) rotating with the shaft accommodates a seal body (5), against whose working face (6) that (9') of a stationary slipring (7) is thrust by gas pressure, a gas-filled gap (S) being maintained between the two. A flexible sealing ring (8) is fitted between the body and the socket roughly halfway out in the radial direction, and bears on the inside against the outside of a coaxial step (13) formed in the socket. A supporting ring (4) sliding in the axial direction forms a sealed joint with the housing wall (2), and presses against the rear of the slipring near the shaft via a coaxial rib (14).  The distance of the latter from the shaft is such that the force generated by the gas pressure and thrusting the slipring against the body gives a resultant widening the gap as distance from the shaft increases. USE/ADVANTAGE - Minimum leakage and maximum reliability under all operating conditions.
Patent DE-3942931-A1 (DE)
Title: Tablet for wafers - with specified surface roughness parameters for the seating surfaces
Inventor: NOZAWA TATSU
IPC: H01L21/205
Filed: 1989-12-23
Abstract: Rest plates for wafers during a CVD treatment are usually made of SiC-coated carbon material and polished. To prevent the wafers from sticking to the surface, the seating surfaces for the wafers are recessed and given a surface roughness of at least 1 micron, max. roughness depth of 10 micron and flatness of +- 50 micron or less. Pref. the tablet (10) is a polished SiC plate, impregnated with Si. The surfaces (11) for seating the wafers have a surface roughness with an arithmetical mean of Ra = 2.5 micron and a max. roughness depth Rmax of 15.5 micron. The flatness index is +/- 50 micron or less. Tests have shown that no wafers were damaged out of 72, but 10 out of 72 were damaged in parallel tests, when the Patent method was not applied. ADVANTAGE - This prevents damage to the wafers, when attempts are made to tear them off the seat by force.
Patent DE-3943533-A1 (DE)
IPC: G06F11/267
Filed: 1989-08-28
Abstract: An apparatus for parallel testing of a semiconductor memory with arbitrary data patterns and capable of being integrated on the memory chip. The semiconductor memory test device in a preferred embodiment is compatible with hierarchical data bus lines including an input/output line pair (I/O, I/O), a plurality of sub-input/output line pairs (SIO1+L, SIO1; SIO2, SIO2) and a plurality of bit line pairs (BL1, BL1; BL6, BL6). A plurality of comparators (50) and a plurality of registers (60) are provided corresponding to a plurality of sub-input/output line pairs (SIO1, SIO2; SIO2, SIO2). The plurality of registers (50) which also functions as intermediated output amplifiers can hold random data applied through the input/output line pair (I/O, I/O). The plurality of comparators (60) is provided to determine whether or not data read out onto a plurality of sub-input/output line pairs (SIO1, SIO1; SIO2, SIO2) from a row of memory cells (MC1, MC2) corresponding to a single word line (WL) match respective data held in the plurality of registers (60).
Patent DE-4004751-A1 (DE)
Title: Changing over spliced optical cable method - enables interruption free disconnection of first and second cable and connection of third cable to first
Inventor: KUNZE DIETER DIPL ING
IPC: G02B6/255
Filed: 1990-02-15
Abstract: Process for interruption free substitution of spliced light wave conductors wherein, firstly, the originally joined light wave conductors (LW1, LW2) of cables (OC1, OC2) are exposed to an established connection and each light wave guide (LW1, LW2) is coupled to a curved coupler (BK1, BK2) to the right and left of the splice position (SP1). The connection between the light wave guides (LW1, LW2) is then broken and a new splice connection with the light wave conductor (LW3) of the new cable (OC3) is made. After this splicing process, the curved couplers (BK1, BK2) can be removed from the original conductors (LW1, LW2). USE/ADVANTAGE - Simple and inexpensive way of connecting first cable, already connected to second cable, to a third cable.
Patent DE-4005176-A1 (DE)
Title: Plastics film for protection against damp - incorporates rows of conical knobs with indentation in side wall
Inventor: ROSEMEIER HEINRICH WILLI
IPC: E02D31/02
Filed: 1990-02-19
Abstract: The plastics film used in the construction industry as a means of protection against damp, is embossed to form rows of hollow knobs. Each knob has the shape of a frustum of a cone with an indentation (6) in the side wall. This indentation is so formed that the inclination of the wall (7) of the indentation on its inner surface is not undercut or only slightly undercut, with respect to the opposite side (11) of the knob (5). The plastics film is particularly useful in regions close to the ground. USE - Protection against damp in building.
Patent DE-4006769-A1 (DE)
Title: Compact fluorescent lamp overhead light fitting - has integral spotlight using parabolic inner reflectors to project beam
Inventor: UNGER HELMUTH K
IPC: F21S8/00
Filed: 1990-03-03
Abstract: Two pairs of fluorescent lamp-elements (14) are mounted symmetrically inside an overhead reflector housing (11) above open concentric reflecting cylinders (12, 15) designed to project an even general illumination. A l.v. halogen lamp is mounted centrally above them in a reflector housing (30, 28) projecting a narrow central cone which may be switched on when required. The inner reflecting surfaces of the lower reflectors are employed to augment the focussing of the upper beam. The upper mounting is readily detachable for servicing. ADVANTAGE - Incorporates diffuse and concentrated light at same source.
Patent DE-4007913-A1 (DE)
Title: ACtivating auxiliary flash unit outside camera - using integrated flash unit to prevent unintentional activation of auxiliary flash unit by foreign flash light
Inventor: PECHER WOLFGANG
IPC: H05B41/32
Filed: 1990-03-13
Abstract: The electric and/or magnetic fields penetrating outwards through the housing of the camera (3) by the activation of the flash unit (1) integrated in the camera, are used to produce an electrical starting pulse activating the auxiliary flash unit (2). The electric field for producing the starting pulse, emanates from the leads and the parts connected with these, which control the ignition pulse acting to ignite the flas tube of the integrated flash unit (2). The unit for carrying out the method includes an electrode (7), mounted on the camera housing near to the reflector (6) of the integrated flash unit (1), which is connected to the ignition circuit of the auxiliary flash unit (2) across an electric lead (9) or a lead (9) and a plug (5) with the synchronised input (4) of the auxiliary flash unit (2). ADVANTAGE - Prevents unintended activation of auxiliary flash unit.
Patent DE-4009983-A1 (DE)
Title: Steering column lock with safety catch - has safety bar to hold locking bolt in inoperative position until key withdrawn
Inventor: DAL CANTON SERGIO
IPC: B60R25/021
Filed: 1990-03-28
Abstract: The locking bolt (6) has a tag (18) which enables the safety bar (13) to hold it back in its recess via a cranked end (17).  The other end of the bar is operated by the cam on the lock barrel to block the locking action of the bolt until the key is withdrawn from the lock. The key enables the lock barrel to move axially.  The axial movement operates on the safety bar and secures the locking bolt. ADVANTAGE - Failsafe construction, minimum of components.
Patent DE-4013787-A1 (DE)
Inventor: GOLDSCHMIDT HANS-GERD
IPC: E05B15/00
Filed: 1990-04-28
Abstract: A window or door fitting has a handle (1) which is mounted rotatably in a bearing sleeve (3) by means of a neck bearing part (2) and which passes by means of an actuating-shaft extension (4) through a lock-actuating element (5) which is rotatably mounted in a fitting housing (7) fastened in a rebate recess (6) and which is axially fixed by means of a holding collar (8) moveable radially outwards counter to a spring effect and penetrating into an annular groove (9). A rose-free embodiment allowing a simple mounting and dismounting of the handle is characterised in that the bearing sleeve (3) is inserted into a wing bore (10) and the holding collar (8) consists of a holding slide which is mounted horizontally displaceably in the fitting housing (7) and which can be pressed out of the annular groove (9), provided on the actuating-shaft extension (4), via at least one rebate-located orifice (13) in the fitting housing (7). <IMAGE>
Patent DE-4021741-A1 (DE)
Title: Compsn. for crack-free, dimensionally accurate ceramics
Inventor: STERZEL HANS-JOSEF DR
IPC: C08L71/00
Filed: 1990-07-07
Abstract: Thermoplastic compsn. for use in the mfr. of ceramic shaped articles comprises: (A) 40-65 vol% of a sinterable, inorganic, non-metallic powder; (B) 35-60 vol% of a binder comprising (B1) 70-90 wt.% of a polyoxymethylene homo- or co-polymer contg. up to 10 mol% comonomer units; and (B2) 10-30 wt.% of (i) a polyoxymethylene copolymer with a comonomer content of 20-99 mol% poly-1,3-dioxolane, poly-1,3-dioxane or poly-1,3-dioxepan or (ii) a polymer which is homogeneously dissolved in (B1) and/or a polymer which is dispersed as particles of ave. size below 1 micron in (B1); and (C) 0-5 vol% of a dispersing aid. Also claimed is the de-bindering subsequent to injection moulding or extrusion by treating at 20-160 deg.C for 0.1-24 hrs. in a gaseous acid-contg. atmos. when (B2(i)) is used or by treating in such at atmos. at 20-180 deg.C for 0.1-24 hrs., followed by heating at 250-500 deg.C for  0.1-12 hrs. when (B2(ii)) is used. Powder (A) is pref. Al203, Zr02, Y203, SiC, Si3N4, TiB and/or AlN. Component (B2(ii)) of the binder is pref. an aliphatic polyurethane, aliphatic non-crosslinked polyepoxide, poly(2-6C alkylene oxide), aliphatic polyamide and/or a polyacrylate.
Patent DE-4022966-A1 (DE)
Title: Turning tool holder with cutting depth adjustment - has play between screwed tool holder spindle and adjusting sleeve removed by preloading of spring collet
Inventor: SCHEER GERHARD
IPC: B23B29/034
Filed: 1990-07-19
Abstract: The toolholder consists of three main parts : a cylindrical housing (10) fastened in a recess of the tool slide of the machine; an intermediate sleeve (16) which is axially fixed but can be rotated; and a central spindle (20) which has a platform (18) at one end for the tooltip (12) and a screw thread (21) at the other in engagement with a corresponding internal thread (22) in the sleeve (16). When the sleeve is turned by means of the hexagonal section (52) the spindle (20), which is prevented from rotating by a key (30) sliding in the housing (10), is moved along its axis, allowing the tool position to be precisely adjusted. The sleeve is axially preloaded between a threaded ring (78) and a spring collet (60) with tapered end surfaces. As well as eliminating axial play, the collet closes on the sleeve and removes all clearance in the screw thread. ADVANTAGE - Tooltip can be precisely adjusted without play. Adjusting sleeve is readily accessible.
Patent DE-4024598-A1 (DE)
Title: Circular polarised surface resonator for NMR tomography - has two coils in parallel of one current direction having antiparallel coil at right angles with opposed current directions
Inventor: DUERR WILHELM DR
IPC: G01R33/341
Filed: 1990-08-02
Abstract: Two first conductors (4, 5) in parallel have the same direction of current (14, 15) flow, with their return leads (6, 7) each forms a parallel coil (2, 3) of at least one winding. Two further conductors (13, 14) are arranged in parallel with their directions of current (113, 114) opposed to each other. With their return leads (15, 16) they form a common antiparallel coil (12) with at least one winding. The antiparallel coil comprises coaxial windings. ADVANTAGE - Approaches homogenous field even at greatest depths of imaging volume, i.e. nearly circular polarised field in imaging volume at predetermined control level.
Patent DE-4025639-A1 (DE)
Title: Prefab roof support system - is made from metal sections with integrally formed rafters, purlins and lath elements
Inventor: WOSCHKO MANFRED
IPC: E04B7/22
Filed: 1990-08-13
Abstract: The roof is supported by a pre-fabricated frame (1) which has integrally formed rafters consisting of C-sections (2, 3, 6) which are rigidly connected at their ends to sections (4, 5) which form purlins and which do not project beyond the C-sections (2, 3). Lath elements are formed by Z- or C-sections (12) which are fastened at each end to the flanges (9, 11) of the C-sections (2) and (3). The secctions (2, 3) which form the rafters and the sections (4, 5) which form the purlins together form a flat rectangular frame. All these sections (2, 3, 4, 5, 6) are made of metal. USE/ADVANTAGE - Roof support which is easily constructed and to which thermal insulation is easily fitted.
Patent DE-4025689-A1 (DE)
Title: Transport of child's push chair - involves frame fastened to rear end of bicycle
Inventor: PUETZLER FRIEDRICH
IPC: B62J7/04
Filed: 1990-08-14
Abstract: The child's push-chair is designed so that it can be compactly folded for convenience of transport. Such a folded push-chair can be transported on a bicycle by a frame fastened to the bicycle. This frame is of rectangular form with upper horizontal member (1) being extended forwards and fitted with an attachment (21) for fastening to the bicycle frame. The lower horizontal member has a lug (19) at its forward end. This lug (19) has an elongaged hole which fits over the spindle of the rear wheel (28) and is retained by the wheel nut. The folded push-chair is attached to the frame by means of rotatable hooks (6,7,8,9) with two of the hooks (7,9) being positionally adjustable. USE - Transport of a child's push-chair.
Patent DE-4033120-A1 (DE)
Title: Genomic DNA fragment encoding antibody variable region prodn. - by attaching primers to hybridoma DNA then subjecting to polymerase chain reaction, for constructing genes encoding chimeric antibodies
Inventor: WEIDLE ULRICH DR RER NAT
IPC: C12N15/09
Filed: 1990-10-18
Abstract: Isolation of a DNA fragment (I) which encodes the variable region of an antibody (Ab) comprises (1) isolating DNA from a hybridoma cell line which secretes the required Ab; (2) converting the DNA to single-strand form, which is then incubated with 2 oligonucleotide primers; primer (1) has a region complementary to a sequence of at least 10 nucleotides from the 5'-untranslated region of the template strand of the Ab gene, while primer (2) contains a region complementary to a sequence of at least 10 nucleotides of the 3'-untranslated region of the relevant J-region of the non-template strand; (c) reacting with DNA polymerase and dNTP to elongate the primers, forming a double-stranded fragment between the 2 primers; (d) denaturing the prod. to single strand form which is reacted again with (1) and (2), and the entire procedure repeated as often as needed.
Patent DE-4033604-A1 (DE)
Title: Recovering sol. plastics from waste contg. plastics materials - by extracting into solvent and injecting soln. into non-solvent medium at temp. above solvent b.pt.
Inventor: SCHNEIDER MANFRED DIPL CHEM
IPC: C08J11/08
Filed: 1990-10-23
Abstract: Soluble plastics (I) are recovered from the waste by (1) selectively dissolving (I) chemically-physically from waste using solvent (II), (2) injecting soln. into container filled with medium which is a non-solvent for (I) and at temp. above b.pt. of (II), such that (II) evaporates and (I) is released in pure state. Evaporated (II) is then recovered by means of a rectification unit. (I) is pref. polystyrene or modified polystyrene, partic. ABS or styrene-maleic anhydride copolymer. (II) is acetone, formaldehyde dimethyl acetal (III), tetrahydrofuran, Et acetate, or Me acetate. Non-solvent is water. ADVANTAGE - System can be closed, formation of azeotrope between (II) and non-solvent (which may cause difficulties in their sepn.) can be avoided; very large excess of non-solvent is achieved through (II) boiling off, avoiding sepn. of large vols. of (II)/non-solvent mixts. (0/0)
Patent DE-4033609-A1 (DE)
Title: New bis(3-cyano-3,5,5-trimethyl-cyclohexylidene)-azine
Inventor: HUTHMACHER KLAUS DR
IPC: C07C209/48
Filed: 1990-10-23
Abstract: Bis(3-CN-3,5,5-(Me)3-cyclohexylidene) azine (IPN-A) is pref. produced by reacting 1,3,3-(Me)3-5-oxo-cyclohexane carbonitrile (IPN) and a source of N2H4, pref. N2H4 hydrate or aq. soln. in presence of a solvent boiling below 120 deg.C, pref. a low mol. wt. alcohol or ether, using 1 of the reactants in a 10% excess compared to the mol. ratio 2:1 and opt. isolating the IPN-A from the reaction mixt.. The IPN-A is pref. hydrogenated using H2 in presence of an organic solvent boiling below 120 deg.C, 5-2,000 g NH3 per kg IPN-A, a Co or Ni Raney catalyst and a salt of Al, Co, Ni, Ru, Rh, Pd, Ir, Pt, Y, Ce or supported Ru, Rh, Pd, Ir or Pt, under 3-30 MPa at 50-150 deg.C, sepg. solids from the reaction mixt. and working up the mixt. distillatively to obtain the 3-(aminoethyl)3,5,5-(Me)3-3-cyclohexylamine produced.
Patent DE-4033617-A1 (DE)
Title: Material saving pack for detergent liq. etc. - has inner thin-walled plastics bottle and outer cardboard stabilising sleeve
Inventor: WEUSTE KARL-ULFERT
IPC: B65D23/08
Filed: 1990-10-23
Abstract: The packaging for detergent fluids etc comprises a plastics profiled bottle (1) enclosed by a cardboard sleeve (17) wherein at least the side walls (7 to 10) of the bottle are thin-walled so that the necessary stability is only produced by interacting with the sleeve. The side walls of the bottle have profiled areas such as indentations (15,16) to form upper and lower stops (11 to 14) with which the sleeve can be brought into locking engagement by using flaps which can be pressed inwards. The sleeve cross-section can be other than circular, e.g. trapezoidal. ADVANTAGE - A 50 percent saving in plastics is possible which is more environmentally acceptable.
Patent DE-4034257-A1 (DE)
Title: Linear operating drive for adjustable automobile headlamp - has DC motor supplied from battery via electronic voltage stabilisation and matching circuit
Inventor: ZATTONI SERGIO
IPC: B60Q1/076
Filed: 1990-10-27
Abstract: The linear operating drive (7) is coupled to the outer housing (2) of the head lamp unit and acts on the head lamp rear reflector (4) for moving it relative to the outer housing (2).  The linear operating drive (7) uses a DC motor (10) with a given operating voltage, its control circuit (11) incorporating a DC source (12) with ae  given nominal voltage and an electronic stabilisation and matching circuit (13) coupled between the source (12) and the motor (10). Pref. the electronic circuit (13) is contained within the outer housing (9) of the DC motor (10). The circuit (13) comprises a NPN - transmistor (20) having a collector connected to an input (14) and an emitter to an output (15).  The base is connected via a zener diode (21) having a zener voltage equal to the working voltage of the motor (10) to one battery (12) lead (17) and via a resistance (22) to another lead (18). ADVANTAGE - Suitable for vehicles with different nominal battery voltages.
Patent DE-4037377-A1 (DE)
Inventor: BLANK KURT
IPC: B65H7/12
Filed: 1990-11-23
Abstract: On a suction device (4, 5, 6, 21) for separating sheet films (3a) from a sheet-film stack (3), a thickness sensor (10, 11, 15, 17, 19) is mounted so as to be pivotable together with said suction device. The suction device (6, 21) releases the sheet film (3a) to be removed from a sheet-film stack (3) by bending its front section. The thickness sensor (10, 11, 15, 17) which has a forklike design is spring-biased to move onto the bent area of the sheet film (3a) still located on sheet-film stack (3). The thickness sensor comprises two levers (10, 11) with rollers (15, 17), one lever (11) being pivotable relative to the other lever (10). Depending on its path of pivotal movement the pivotably mounted lever (11) actuates a switch (19). If there is more than one sheet film (3a) between the rollers (15, 17) of the levers (10, 11) switch (19) is actuated which interrupts the sheet-film removal operation and causes its repetition. Even if the removal operation must be repeated several times the sheet film (3a) to be removed remains on the sheet-film stack (3), which prevents it from being subjected to any undesired wear and tear.
Patent DE-4037824-A1 (DE)
Inventor: REMBOLD HELMUT DIPL ING
IPC: F01L13/00
Filed: 1990-11-28
Abstract: A hydraulic control device has a differential cylinder (11) with a differential piston (12). The pressure chamber (13) on the smaller surface of the differential piston is constantly pressurized by a pump (16), and the pressure chamber (18) on the piston surface (18) is pressurized on via a magnetically actuated control valve (20). In the neutral position, the magnetically actuated control valve (20) has a negative overlap. As the pump is operated at varying speed and the differential piston, when stationary, should be acted on by a constant partial pressure, the control valve is designed so that the flow cross-sections at the control valve can be permanently or temporarily adjusted by actuating the electromagnet accordingly.