baber/WOPTO huggingface dataset:
Patent DE-4006974-A1 (DE)
Title: Gel electrophoretic sepn. with temporal or spatial temp. gradients
Inventor: HENCO KARSTEN DR
IPC: C12Q1/68
Filed: 1990-03-06
Abstract: Sepn. and detection of components in a mixt. by temp. gradient gel electrophoresis (TGGE) comprises: (1) establishing a spatial temp. gradient in the direction of the applied electrical field, using at least 2 spaced apart heating levels and/or a temporal temp. gradient by varying the temp. of a temp. level; (2) transferring the temp. gradient to the gel matrix; (3) adjusting the temp. level used to establish the spatial gradient by adjusting heating/cooling systems so that positions of same electrical potential have identical temp., or to establish the temporal gradient at any position in the sepn. medium the temp. level in freely adjusted in a time-dependent manner using such system; and (4) opt. at the end of the sepn. medium the sepd. component are detected.
Patent DE-4009153-A1 (DE)
Title: Casting of aluminium-silicon alloy - using porous mould chill regions to obtain fine grained surface regions
Inventor: RUEHLE MARTIN
IPC: B22D21/00
Filed: 1990-03-22
Abstract: In the prodn. of an Al-Si alloy casting with a locally variable cast structure which is extremely fine grained in certain `surface regions, the novelty is that in the region for forming  the extremely fine grained structure, the casting mould is formed of a porous material with high heat capacity and high heat storage vol., the porosity being chosen such that, on applying a pressure difference of up to 1 bar to the melt, the melt cannot penetrate the pores. When the mould is filled with melt, the porous mould region is connected (temporarily) to vacuum. ADVANTAGE - The vacuum ensures close contact between the melt and the porous mould region, resulting in a high solidification rate.  The process is at least as effective as the more  expensive prior art processes.
Patent DE-4009891-A1 (DE)
Title: Prepn. of optically active alcohol(s) and carbonic acid di:ester(s) - by hydrolysis of racemic carbonic acid di:ester(s) with lipase
Inventor: JEROMIN GUENTER ERICH PROF DR
IPC: C12P41/00
Filed: 1990-03-28
Abstract: Optically active alcohols and optically active diesters of carbonic acid are prepd. by reacting racemates of carbonic acid diesters with lipases at 20-60 deg.C. Pref. the carbonic acid diester has the formula R1-O-C(O)-O-R2, where R1 = a non-chiral alkyl gp.; R2 has at least 1 optically active centre, and may be (substd.) (cyclo)alkyl or heterocycloalkyl. Hydrolysis is with pancreatic lipase (pref.) or lipases from Pseudomonas sp., at pH 5-7.7, without addn. of base, or with addn. of bases to form a carbonic acid / bicarbonate buffer system. USE/ADVANTAGE - The optically active alcohols and esters are useful intermediates. The system is self-buffering and control of pH is not needed. The enantio-selectivity is good. Optically active alcohols and esters which are unobtainable, difficult to obtain, by known processes, can be made. The CO2 formed acts as protective gas and reduces the risk of microbial contamination and premature breakdown of the enzyme by foreign proteases.
Patent DE-4011952-A1 (DE)
Title: Rotary piston pump with slotted pistons - has piston rotors with plates having different thermal expansion coefficient
Inventor: RIETSCHLE WERNER
IPC: F04C18/12
Filed: 1990-04-12
Abstract: The rotary piston pump has two vane-type pistons rotating about parallel oppositely displaced axes in which the pistons (18, 20) have open slots (30) at the outer circumferences of the piston wings. The slots each carry a sealing plate (32) are made of a material of a lower thermal expansion than that of the piston wings. The plates are axially movable in the slots but held radially firm. ADVANTAGE - Rotary piston pump in which the sealing gap between the pistons and the pump housing is kept small.
Patent DE-4016497-A1 (DE)
Title: Fork-lift truck with tilting fork support frame - has roof of driver's cab supported on hydraulic cylinders
Inventor: SCHROEDER WERNER-GEORG DIPL IN
IPC: B66F9/08
Filed: 1990-05-22
Abstract: The fork-lift truck hasa a front mounted lifting fork which is supported on a frame (1) which can be swung about a horizontal axis near its lower end.  The frame (1) is actuated by means of two parallel horizontal hydraulic cylinders (7) which have their piston rods (9) attached to the upper end of the frame (1). The driver's cab is covered with a protective roof (8) and this roof is supported by the hydraulic  cylinders (7).  This method of supporting the roof (8) provides a more compact design of fork-lift truck. USE - Fork-lift trucks.
Patent DE-4017479-A1 (DE)
Title: Electronic taxi fare meter with variable tariff
Inventor: ADAMS JUERGEN DIPL ING
IPC: G07B13/10
Filed: 1990-05-31
Abstract: An electronic taxi fare meter contains a clock with a calender function via which a tariff specification influencing factor is controllable. The elapsed time is hierarchically divided into time of day, time of week and time of year. The time is displayed so that the time points defined mark a beginning and end of time zones in the different time intervals of a day, week or year. The  zones are represented by count parameters in three counters corresp. to the time intervals whose current contents can be combined w.r.t. the associated zones.
Patent DE-4021638-A1 (DE)
Title: Hydrogen prodn. from hydrogen sulphide - by contact with ferrous sulphide or precursor in aq. soln., giving very insol. pyrite suitable for dumping
Inventor: DROBNER ELISABETH
IPC: C01B3/06
Filed: 1990-07-06
Abstract: Prodn of H2 from H2S is carried out by contacting an aq. soln. of H2S or its salt with FeS or a substance contg. Fe, which forms FeS on contact with H2S. Contact is carried out at 50-150 deg C and pH 4-9, pref.  5-8, with exclusion of O2. Amorphous FeS or pyrrhotite (II) is used for contact. USE/ADVANTAGE - H2 is produced from H2S at relatively low temp. and the process can be carried out at all temps. and pressures at which water can exist in the liquid phase.  The end prod., pyrite (I), is extremely insolin acids and can be dumped on land or at sea without harming the environment.
Patent DE-4028833-A1 (DE)
Title: Mode control for vehicle automatic transmission - with manually selected hold mode overridden in dependence on required acceleration
Inventor: ITZUKA NAONORI
IPC: F16H59/18
Filed: 1990-09-11
Abstract: The mode control for a vehicle automatic transmission uses a manual mode selection switch (8) for selection of an 'economy', 'power' or 'hold' operating mode. When the switch (8) is in the 'hold' position, the gear changing in response to the monitored engine load parameter (TH) is blocked, the load parameter (TH) being evaluated to provide a required acceleration value. This is compared with a reference value for overriding the 'hold' mode when the required acceleration value is above the reference value. Pref. the 'power' mode is selected in place of the 'hold' mode when the latter is overridden. ADVANTAGE - Improved vehicle acceleration response.
Patent DE-4029439-A1 (DE)
Title: Sieve appts. with emergency bypass - esp. for removing solid impurities from cooling water
Inventor: EIMER KLAUS
IPC: B01D35/147
Filed: 1990-09-17
Abstract: Appts. for sepg. solid matter from liqs. esp. impurities from the cooling water stream of power stations and other thermal installations, consists of a tubular housing which forms part of the water piping, and which contains a rotationally symmetrical sieve element, covering the entire housing cross-section, and a coaxial cleaning device, acting on a portion of the sieve surface and rotating for successive coverage of the entire sieve surface. (a) the housing is enclosed, in the region of the imaginery contact line with the sieve element by an additional, rotationally symmetrical and coaxial outer housing (14) which is connected water-tightly at both ends to the tubular housing; and (b) the tubular housing has, upstream and downstream of the sieve element, one or more openings (15,16) which lie within the outer housing, and which form, together with the housing and which form, together with the housing, a bypass (17) for the sieve element, movable shut-off device (19,20) being provided for opening and closing the bypass. ADVANTAGE - Design allows bypassing of the sieve element in emergency situations.
Patent DE-4032586-A1 (DE)
Title: Angular position adjuster for I.c. engine charge valve camshaft - has even number of torque transmission adjusting chambers between camshaft and drive wheel
Inventor: DANCKERT HERMANN DR ING
IPC: F01L1/46
Filed: 1990-10-13
Abstract: The adjusters of the angular position of a camshaft (1) to its drive wheel (4) has adjusting chambers (5-8) acting as a torque transmitting connection between the shaft and the wheel.  The chambers are divided from each other by axially parallel strips (9-12). The desired angle adjustment is achieved by controlling the pressure ratios in the chambers in accordance with the operating parameters of the engine. ADVANTAGE - Simple, compact design.
Patent DE-4106964-A1 (DE)
Inventor: PALLERBERG WILFRIED
IPC: B29C33/04
Filed: 1991-03-05
Abstract: A device is described for producing hollow and solid mouldings from plastic by rotation casting, in which device an electroplated mould in the form of a double-walled hollow body (1) is heated and cooled by means of a heating and cooling medium respectively. A box (26), which contains plastics material, can be placed on the mould (1). The mould (1) and the box (26) can be jointly pivoted, so that the plastics material can run into the mould (1) and fuse on the mould wall. The double-walled hollow body (1) has a plurality of inlet and outlet openings (14, 15), for the heating and cooling medium, on its rear wall (7) directed away from the shaping inner contour (6), so that the heating and cooling can each be carried out selectively and quickly. The overall outlet cross section is greater than the overall inlet cross section, so that the hollow body (1) remains substantially unpressurised. The mould can simultaneously execute a rotation (28) about an axis, a pivot movement (5) about a second axis and translatory movements (20) in the direction of the axis of rotation in a freely programmable manner. 
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Patent DE-4107953-A1 (DE)
Title: Access gate for one-way traffic - has optical or acoustic warning device activated by attempted access in wrong direction
Inventor: WANZL RUDOLF
IPC: G07C9/02
Filed: 1991-03-13
Abstract: The access gate has a door (5) which pivots automatically between a closed and open position, with a detection system (15) coupled to an optical and/or acoustic warning device (16) for providing a warming signal upon passage through the access gate in the wrong direction. The warming device (16) is incorporated in the door frame (7), or attached to the latter, enclosed by a protective cap which has slits for passage of the sound waves, or the light signal. Alternatively, the warning device (16) has an electronic control for providing a spoken warning via a loudspeaker. ADVANTAGE - Simple installation of warning device.
Patent DE-4111044-A1 (DE)
Title: Gun sight with rotatable adjustment knob - has knob held in required position by one of two spring-loaded balls
Inventor: STRAUB DIETER
IPC: F41G1/18
Filed: 1991-04-05
Abstract: The gun sight for a sporting gun is adjusted by means of a rotatable knob (10) which can be held in any one of a number of different positions by means of two spring-loaded ball catches (16,18). The balls are mounted in holes in the fixed base of the gun sight and engage slots (14) in the flange (12) of a central bush (24). The slots (14) are equally spaced around the periphery of the flange and the balls (16,18) are positioned so that when one ball (18) engages a slot the other ball (16) is positioned between two slots and vice versa. The number of possible positions of the knob is thus equal to twice the number of slots (14). USE/ADVANTAGE -Gun sight with fine adjustment.
Patent DE-4120093-A1 (DE)
Title: Heating and/or cooling system for interior of passenger vehicles - has blocking layer and other layer between which is heat reflecting layer and porous heat conducting layer
Inventor: KIERMAIER ALOIS
IPC: B60H1/00
Filed: 1991-06-18
Abstract: The arrangement has at least some part of the inner surface of the passenger compartment which has a conducting system through which can flow a heating and/or cooling medium. Surface elements are provided which are formed from a blocking layer (2) and a layer (4) through which the medium circulates. Between the two layers is a heat reflecting layer (3) and a porous heat conducting layer acting as a cover (5) which is made of heat conductive material. ADVANTAGE - Avoids the creation of annoying draughts for the occupants. The blocking layer has noise and vibration damping characteristics.
Patent DE-4126937-A1 (DE)
Inventor: VOGELBACHER UWE JOSEF DR
IPC: C07D409/12
Filed: 1991-08-10
Abstract: Salicyl (thio)ether derivatives of the formula I <IMAGE> in which X represents oxygen or sulphur and Z represents carbon or nitrogen and the radicals R<1> to R<4> and A are as defined in the description, as well as processes and intermediates for the preparation of the compounds I.
Patent DE-4129379-A1 (DE)
Title: Knock down thread protector for pipe ends - has easily separated sheet metal case enclosing plastics thread protector
Inventor: KEGENBEIN HELGE DR
IPC: B65D59/06
Filed: 1991-09-04
Abstract: The protective case can comprise a sheet metal sleeve (1) enclosing the plastics insert (2). The sleeve has, at the top, a flanged over edge (3) to withstand knocks and secure the insert. The plastics and sheet metal bodies can be easily separated so that the thread protector can be dismantled for separate removal. The lower edge of the protective cap can be drawn in to prevent the plastics insert from falling out.So that the plastics insert is entrained as the sleeve is turned, an entrainment strip (5) can be fitted by welding or rivetting. ADVANTAGE - Good seal against moisture and dirt although the parts are easy to separate.
Patent DE-4134320-A1 (DE)
Title: Synthetic hair for hair implantation, wigs etc. -  consists of monofilament based on polyvinylidene fluoride
Inventor: KRAHMER GERHARD M
IPC: D01F1/06
Filed: 1991-10-17
Abstract: Synthetic hair is for use in hair implantation or in wigs, hair pieces and toupees and consists of an extruded and drawn monofilament. The monofilament is based on sterisilisable thermoplastics, i.e. polyvinylidene fluoride. ADVANTAGE - The hair is easy to dye and style and highly fire resistant.
Patent DE-4134388-A1 (DE)
Inventor: FELDER ANTON DIPL ING
IPC: B01D21/34
Filed: 1991-10-17
Abstract: The invention relates to a device for the central supply of waste water in a circular settling tank by means of a vertical pipe and is distinguished by a centrally inserted horizontal circular control disc (2) in the region of the transition from the vertical pipe (7) to a seamlessly continuously connecting trumpet-shaped expansion (4), the control disc (2) forming an annular gap (3) with the inner periphery of the rim. <IMAGE>
Patent DE-4136233-A1 (DE)
Title: Slide shoe for sliding roof of motor vehicle - has angled stripper lips in front of slide face, and sliding on rail surface, to remove dirt
IPC: B60J7/02
Filed: 1991-11-02
Abstract: The sliding roof is connected to slide shoes. These move in slide rails on either side of the roof cutout, to open and close the roof. A stripper lip (16, 19) is located in front of the slide face of a slide shoe in slide direction (15, 18), and at an angle to that direction. The free edge of the lip slides on the associated contact face of the slide rails. There may be a lip on either side of a slide face. The slide rails are U-shaped, and the shoes engage into the rails. ADVANTAGE - Function of sliding roof is not impaired by deposits of dust etc. on slide rail surfaces.
Patent DE-4136996-A1 (DE)
Title: Disc drive system for reading or writing data memory - has pancake type motor construction built-in for direct drive with rotor supported on inner and outer ball bearing assemblies
Inventor: HANS HELMUT DR
IPC: G11B19/20
Filed: 1991-11-11
Abstract: A direct drive system for use with disc drives has a stator (2) and a rotor (20) with a central spigot (22) and flange (26) that serves as a location for the disc. The rotor has a central stem (21) and a disc (28). The stator has an insert (8) that supports the stator windings (14). The rotor is supported on inner (40) and outer (50) ball bearings. The outer (44, 54) bearing races are fixed to the stator assembly, while the other races rotate with the rotor assembly. ADVANTAGE - Small axial length. Increased bearing stiffness for error-free reading or writing.
Patent DE-4140194-A1 (DE)
IPC: A61K9/10
Filed: 1991-12-05
Abstract: Slow-release medicaments containing a pharmacologically active dihydropyridine derivate as a pharmaceutically applicable nanosol have considerably improved bioavailabilities and resorption rates, with an increased tolerability of the active substances.
Patent DE-4200687-A1 (DE)
Title: Radial bearing with bearing bush and lubrication gap - has tangential oil supply bores in bearing housing opening into oil chamber
Inventor: BERTHOLD HORST
IPC: F16C33/10
Filed: 1992-01-14
Abstract: On the outer circumference of the bearing bush (12) there are recesses (17) from which bores (13) lead to the lubricating gap (15) and whose one flank forms an impact face for the oil emerging from the oil supply bores (16). The recesses are saw toothed. The bores run radially in the bearing bush and the recesses are set symmetrical to the centre axis of the bores. ADVANTAGE - The speed of the bearing bush is significantly reduced to reduce the shaft vibrations and friction output.
Patent DE-4201373-A1 (DE)
Inventor: KITAMURA HIROSHI
IPC: H02K5/10
Filed: 1992-01-20
Abstract: An O-ring seal arrangement is between a motor unit (50) and a reduction gear head (51) of a geared motor. An O-ring holder (7h) which holds in place an O-ring (20) is defined by a flange face (7b) of a flange (7f) of a bracket (7) which is fitted into a recess (3d) of a frame (3) of the motor unit (50) and also by a guide groove (7g) which is formed on an outer face (7d) of a circular boss (7c). The flange (7f) has a thickness which is smaller by a distance (F) than the depth of the recess (3d). As a result of the distance difference (F) and the guide groove (7g), the O-ring (20) cannot slip off or become trapped when the reduction gear head (51) is coupled to the motor unit (50). <IMAGE>
Patent DE-4203142-A1 (DE)
Title: Motor powered paper cutter for use with printer - has module that locates on frame with switch triggered by printer head to initiate cutting cycle
Inventor: GUENTNER HANS DIETER
IPC: B65H35/04
Filed: 1992-02-05
Abstract: The paper sheet cutter unit for use on printers has an open box shaped holder (1) with side plates (3, 4) having recesses (6) that engage locations on the main frame of the printer. The motor powered cutter unit (8) fits into the holder and is retained on the base. Built into the base is a reed relay switch (9). When the head of the printer is commanded to move to an extreme edge position, the switch is triggered. The switch output is used to actuate the cutting unit. USE/ADVANTAGE - e.g. cinema ticket printing. Cutter is easily mounted and activated.
Patent DE-4203765-A1 (DE)
Title: Decontamination of persons and utensils - using portable locking cabin containing air stream blowing through air jets inside polygonal internal chamber with doors closing parallel openings
Inventor: DUEVELL RAGNA DIPL ING
IPC: B08B5/00
Filed: 1992-02-10
Abstract: The device is a portable lock-cabin for decontamination of persons and equipment in a rotating and axially flowing air stream blowing through tangential air jets (6) and sucked off through ground-openings. It has an all-round closed internal chamber (1), a horizontal round cross-section, a lockable entry through the doors (3,4) and connecting couplings for the pipes of the supply unit. The internal chamber (1) has a polygonal shape formed by plane side walls (2) with air jets (6) distributed at the edges parallel to the side walls. Each polygon has two doors (3,4) closing the openings on two parallel sides. USE/ADVANTAGE - Improved cleaning and removing of dirt and impurities from persons and clothing. Efficient cleansing of tools, equipment and medical instruments.
Patent DE-4204291-A1 (DE)
Inventor: ACACIO DA SILVA EDILBERTO
IPC: F23Q2/32
Filed: 1992-02-13
Abstract: A lighter-key-holder combination wherein the key-holder is independent from the lighter and comprises a detachable fitting (1) having a cross-section which may be similar to or different from that of the lighter (2), which can be of circular or rectangular cross-section or spherical in form, said fitting (1) being coupled to the lighter (2) by a threaded pin (3) centrally formed thereon and received in a threaded bore (4) centrally formed on the bottom surface of said lighter. The fitting (1) is provided with a transverse bore (8), with an open side closed by a latch (9) biassed by a spring (not shown) and manually operated by an external button (10). In an alternative lighter a connecting ring (5) is provided in the body of the lighter (2) oar in the actuating lever of the lighter. <IMAGE>
Patent DE-4205440-A1 (DE)
Title: Electric plug connector with nut for screwing onto threaded plug - has teeth directly attached to nut which tightly cooperates with teeth on contact carrier
Inventor: FUCHS HELMUT
IPC: H01R13/622
Filed: 1992-02-22
Abstract: The electric plug connector has two connecting parts, one of which has a nut which screw fastens onto a thread provided on the other part to make the connection. The connector has a wrap around nut (15) which is rotatably positioned on a contact carrier (13). This is screwed onto a counter plug for connection with it. The nut (15) has teeth (21) directly fixed to it. These teeth (21) cooperate with opposing teeth (20) on the contact carrier (13) to fasten the nut tightly without it rattling. USE/ADVANTAGE - Esp. for proximity switch. Simple method of providing secure, tight connection.
Patent DE-4209969-A1 (DE)
Title: Handling and positioning system for magnetic tape cassette assembly - holds cassette by grippers on carriage with pneumatic cylinders operating with stop for accurate location
Inventor: MAIN HORST
IPC: G11B23/113
Filed: 1992-03-27
Abstract: A handling system is used for the gripping and movement of cassettes, e.g. VHS video cassettes, in an assembly process. The cassette component (7) is held between grippers (5,6) mounted on frames (1,2) as part of a main carriage assembly. The cassette component may be turned through an arc by a chain drive (18) coupled to a bevel gear transmission (15). Movement of the grippers to hold the unit is a required location is provided by pneumatic cylinders (3,4). One of the cylinders is used to displace the frame (1) until a stop (20) is encountered. This determines the component location. The second gripper is then moved to secure the component. ADVANTAGE - Prevents wear of eccentric guide after long usage and weakening of drawing spring leading to faulty mounting and risky prodn. standard.
Patent DE-4211954-A1 (DE)
Inventor: PETERS OKKE DIPL ING
IPC: E01F9/692
Filed: 1992-04-06
Abstract: A stand (10) for holding signs, in particular traffic, warning and advice signs for safeguarding a building site or danger site in a road traffic area is proposed, comprising a plate-shaped stand body (11) which comprises a large number of openings (12, 13) for insertion and holding of stands for signs and/or a power supply arrangement and the like, the shape of the stand body (11) being selected in such a manner that the stands (10) lie on one another safely and undisplaceably in the stacked state. Arranged on the stand body (11) is at least one transport roller (14, 15). <IMAGE>