baber/WOPTO huggingface dataset:
Patent DE-3725500-A1 (DE)
Inventor: LUBITZ KARL DIPL PHYS DR
IPC: B41J2/16
Filed: 1987-07-31
Abstract: Piezoelectric ink printing head in which at least one piezoelectric drive unit (1) acts on the ink in a channel (5) in such a way as to cause a drop-like jet of ink to be ejected from a nozzle (22) through piezoelectric constriction. The drive element (1) contains a piezo-ceramic part (2) with an ink channel (5); a first electrode (3) is positioned on the piezo-ceramic part (2) together with a second electrode (4) which is insulated from the first (3). The nozzle front (21) having at least one nozzle (22) is directly connected to the piezo-ceramic parts (2). The method provides for the ink printing head to be made in one piece from piezo-ceramic strip (46) with channel-like cavities and metal coatings.
Patent DE-3728315-A1 (DE)
Title: Liquid-crystalline nematic mixtures
Inventor: DEMUS DIETRICH PROF DIPL CHEM
IPC: C09K19/34
Filed: 1987-08-25
Abstract: The invention relates to liquid-crystalline nematic mixtures for opto-electronic arrangements for the modulation of light and for the display of numbers, symbols and images. It has been found that novel trans-5-substituted 2-(trans-4-substituted cyclohexyl)-1,3-oxathianes of the formula <IMAGE> are suitable as components for the preparation of nematic mixtures of high stability and high clearing point. The compounds I according to the invention can be prepared by reacting 2-substituted propane-1,3-diols with HBr and heptane to give 2-substituted 3-bromopropan-1-ols, which are reacted with thiourea in ethanol, subsequently treated with NaOH and acidified with HCl, giving 2-substituted 3-mercaptopropan-1-ols, which are reacted with trans-1-substituted 4-formylcyclohexanes to give the final products, which are equilibrated one or more times with boron trifluoride/diethyl ether in chloroform in order to increase the yield.
Patent DE-3729796-A1 (DE)
Title: Hydraulic or pneumatic nut breaker
Inventor: HOHMANN HANS
IPC: B25B27/00
Filed: 1987-09-05
Abstract: The invention relates to a hydraulic or pneumatic nut breaker, having a cutting head which surrounds the nut and in which a chisel provided with a cutting edge is axially movable, and also having a cylinder with a piston centrally guided therein, the length of the chisel cutting edge being smaller than the cylinder outside diameter. This nut breaker is characterised in that the chisel shank (22) is arranged, in the plane (29) of the chisel cutting edge (24), eccentrically with respect to the longitudinal centre axis of the piston (20) and the cylinder (2) in the cutting head (1). <IMAGE>
Patent DE-3731710-A1 (DE)
Title: Bearing arrangement for an axially compact miniature fan
Inventor: WROBEL GUENTER
IPC: F04D29/056
Filed: 1987-09-21
Abstract: The invention concerns a bearing arrangement for an axially compact miniature fan, in which a sintered journal bearing (15) for the motor shaft (1) of the drive motor (13) is braced between a collar (6') of a bearing support tube (5) and another collar (7) of a closure element (8) cooperating with the bearing support tube (5). <IMAGE>
Patent DE-3736033-A1 (DE)
Title: DC motor which has a disc-shaped rotor but no commutator
Inventor: ZUCKSCHWERT EDGAR
IPC: H02K29/14
Filed: 1987-10-24
Abstract: In the case of a DC motor which has no commutator but has a rotor with a disc-shaped permanent magnet (10) and a stator provided with stator coils (3) and an iron return path (2), the edge region (21) of the rotor magnet (10) is provided with magnetisation having a very small pole pitch, in order to generate a tacho signal in a tacho turn (6). A stator supporting plate is designed in such a manner that both the stator coils (3) and the tacho turn (6) are arranged on the side of the supporting plate facing the rotor, and that region which is provided with the tacho turn (6) is arranged in the immediate vicinity of the edge region (21) of the disc-shaped rotor magnet (10), separated only by a distance which is necessary for the rotational movement of the rotor. <IMAGE>
Patent DE-3736446-A1 (DE)
Title: Radio transmission system
Inventor: STREMME WOLFGANG DR
IPC: H04W84/10
Filed: 1987-10-28
Abstract: In a radio transmission system for transmitting communication services such as, for example, voice, text, image or telemetry transmission for use in route-bound transport means with directional microwave transmission it is provided that the system is set up at least partially as an integrated services digital network (ISDN).
Patent DE-3737261-A1 (DE)
Title: Butt-joint connection of two hollow-profile mouldings
Inventor: JAEGLE BRUNO
IPC: F16B12/40
Filed: 1987-11-03
Abstract: A description is given of a butt-joint/peg connection of two hollow-profile mouldings having the same open cross-sectional profiles on the moulding end sides. Such mouldings may be used as vertical supports for pieces of work furniture. Each profile exhibits two threaded holes, located on an axis of symmetry, and a further cutout which is located beside the threaded holes. The pegs are configured as studs having a thread end and a peg end, and they are screwed into the threaded holes of one hollow profile moulding. The projecting peg ends received by the other hollow-profile moulding are spread out, transversely with respect to the longitudinal axis of the peg, by means of an insert piece which spans the further cutouts of the two hollow-profile mouldings. The spreading is effected by screw-bolts which can be actuated from the outside via openings in the relevant hollow-profile moulding.
Patent DE-3738888-A1 (DE)
Inventor: YOSHIZAKI HIDEO
IPC: C01F7/74
Filed: 1987-11-16
Abstract: A method and apparatus for the continuous synthesis of an aqueous aluminum sulfate solution a method for the continuous production of an aqueous aluminum sulfate solution from by-products occurring in aluminum surface treatment operations, namely (i) an aluminum sludge comprising mainly aluminum hydroxide, (ii) waste sulfuric acid and (iii) an aluminum sulfate-containing aqueous sulfuric acid solution, which method comprises feeding the sludge, waste sulfuric acid and aluminum sulfate-containing sulfuric acid to a reactor comprising a plurality of successively connected reaction vessels, causing the fed substances to flow sequentially through the vessels from the first vessel to the last vessel to undergo reactions at temperatures of from 80 DEG C to the boiling point of the reaction solution; in which method a part of the aluminum sulfate-containing aqueous sulfuric acid solution is fed to at least one reaction vessel subsequent to the first reaction vessel, and the pH of the reaction solution in the last reaction is adjusted to be from 1.6 to 2.5.
Patent DE-3744361-A1 (DE)
Inventor: SATOH TAKAHIDE
IPC: B41F15/20
Filed: 1987-12-29
Abstract: A printing machine suitable for printing on cylindrical objects 8 has a work-holder 7 rotatable by a gear 4. A printing screen 9-1 is reciprocable in contact with the object 8 as the object is rotated, the screen being pressed on to the object by a squeegee 9-2. Reciprocation of the screen 9-1 is controlled by gear 2. Gears 2 and 4 are synchronously driven by racks 3-2 and 3-4, respectively driven by linear reciprocal motion mechanisms 1-1, 1-3 and 1-2, 1-4, the cranks 1-1 and 1-2 of which are driven by a shaft 1-0 and which have variable throws. If an object of a different diameter is to be printed, a simple adjustment to the cranks allows the print-start position at each printing station to be maintained. Gear 6 is intermittently driven in one direction after each printing operation, in the return part of the linear reciprocation motion, to move the object to the next printing station e.g. for multi-colour printing. Whilst ensuring that the object completes one complete rotation ready for the start of printing in registration at the next station. Alternative arrangements are shown for objects having truncated cone or polyhedral shapes. <IMAGE>
Patent DE-3800082-A1 (DE)
Title: Clutch/brake combination
Inventor: BOHNE MICHAEL
IPC: B30B15/10
Filed: 1988-01-05
Abstract: The invention relates to a clutch/brake combination consisting of a cylinder (10, 11) accommodated in a brake housing, a piston (13) which can be made to slide axially in the said cylinder and is acted upon by compression springs (15), of friction surfaces (12, 12a) and corresponding friction surfaces (14, 14a) provided on annular surfaces of the cylinder, the piston and a rearward flange (16) of the cylinder, the cylinder (10, 11) being rigidly connected to an eccentric shaft, and further consisting of a plate provided with an organic friction lining which rotates with the driven flywheel between the counterfriction surfaces (14a) of the piston (13) and of the flange, and of conduits which serve to supply compressed air to an interspace between the cylinder and piston. This clutch/brake combination is distinguished by the fact that the sliding surfaces of the cylinder (10, 11) and of the piston (13) are each provided with an anti-friction coating preferably consisting of at least one thin layer of polytetrafluoroethylene (PTFE). <IMAGE>
Patent DE-3800746-A1 (DE)
Title: Modulo-10 counter in 54321 code
Inventor: MERKLE PAUL
IPC: H03K23/50
Filed: 1988-01-13
Abstract: In the modulo-10 counter according to the subject matter of the invention, each decade consists of four counting-type dual flip flops and an additional dual flip flop 5 which switches to its left-hand position at the fifth counting pulse and switches to its right-hand position at the tenth counting pulse and in which each decade thus indicates the decade count in 54321 code. In the dual flip flop 5, two additional AND gates 14 and 15 are required. The direct decade input N is only arranged in the decades of the special models. <IMAGE>
Patent DE-3801479-A1 (DE)
Title: Pilocarpine derivatives
Inventor: AMSTUTZ RENE
IPC: C07D409/06
Filed: 1988-01-20
Abstract: Pilocarpine derivatives of the formula I <IMAGE> in which R1 to R5 are as defined in the description, their preparation and use as therapeutics.
Patent DE-3801572-A1 (DE)
Title: Modulo-10 counter for both counting directions
Inventor: MERKLE PAUL
IPC: H03K23/50
Filed: 1988-01-20
Abstract: In the up/down counter according to the subject matter of the invention, each decade consists of 4 counting-type dual flip flops (11 to 14) and an additional dual flip flop which only switches to its other position with the fifth and tenth decade up-counting pulses and with the first and sixth decade down-counting pulses. This up/down counter thus supplies the count in 54321 code. During the forward counting, the dual flip flops 11 to 14 successively switch from right to left into their left-hand position and with the fifth up counting pulse jointly into their right-hand position. During the down counting, the dual flip flops 11 to 14 jointly switch to their left-hand position with the first down counting pulse and then successively from left to right into their right-hand position. The drive to the dual flip flops is controlled by circuits 6 and 7. <IMAGE>
Patent DE-3802738-A1 (DE)
Title: Construction toy
IPC: A63H18/02
Filed: 1988-01-30
Abstract: In a construction toy, modifiable toy constructions can be achieved by means of a number of strip parts (1) with a substantially planar central section (1') and hollow bodies (2) designed adjacent to the central section (1') on both sides and projecting above the latter, and having an open underside, with connecting elements (3, 4) arranged on the central sections (1') for the plug-in fixing of identical strip parts (1) to each other, and with plug connectors (5) engaging into the hollow bodies (2) of strip parts (1) arranged side by side in the same or a different plane. <IMAGE>
Patent DE-3803824-A1 (DE)
Inventor: KURZ GERHARD
IPC: A47L9/28
Filed: 1988-02-09
Abstract: In a mounting for sensors and transmitters providing a means of dust detection in vacuum cleaners, in particular in the form of light- emitting diodes and phototransistors, adjacent to the suction channel of the vacuum cleaner, it is proposed that at least one axial channel be formed in the detection area of the sensor directly adjacent to the sensor from the inside outwards, through which a stream of air is blown on the basis of the negative pressure or excess pressure prevailing in the vicinity of the sensor, continuously blowing clear the sensitive area of the sensor. 
<IMAGE>
Patent DE-3804654-A1 (DE)
Title: Process for producing rolling bearing elements from a microalloyed steel
Inventor: HENGERER FRANK DR
IPC: C21D8/00
Filed: 1988-02-15
Abstract: In a process for producing rolling bearing elements from a microalloyed steel, the rolling bearing elements are hardened only on their running track surfaces. To enable the process to be used particularly economically in spite of hot-forming and subsequent machining of the rolling bearing elements, these are hot-formed at 900 to 1200@C and cooled from the hot-forming heating pass under control, so that a fine perlite microstructure is formed. The rolling bearing elements are then machined and finally, for surface-hardening, heated partially inductively, austenitised and quenched in oil, salt or water. <IMAGE>
Patent DE-3808880-A1 (DE)
Title: Device for lifting off dentures
Inventor: SCHAEFER WOLFGANG
IPC: A61C3/16
Filed: 1988-03-17
Abstract: A device for lifting off dentures, to which there are allocated in the use position other dentures and/or natural teeth, is to be improved in such a way that at least one of the spacers (26) for a carrier rod (24) has a cylinder (26) which is charged with a flow agent and whose cylinder space of variable volume is delimited by a piston carrying a section of the spacer. The piston is to have circumferential piston rings. <IMAGE>
Patent DE-3811434-A1 (DE)
Title: Mechanical motor vehicle antitheft device on the handbrake release button
Inventor: LUIPOLD GEB WEISS
IPC: B60R25/00
Filed: 1988-04-05
Abstract: As part of justified efforts to protect property, it is appropriate to provide a further vehicle antitheft device in addition to the (frequently unused) steering wheel lock. As the steering wheel lock provides for fixed locking of the steering system which can be overcome by brute force, this antitheft device is concerned with protecting the handbrake when it has been pulled tight. The existing handbrake release button can be unscrewed without difficulty and replaced by a solidly constructed handbrake release button which, owing to a peripheral annular groove, only retains a core cross-section. The extremely small motor vehicle antitheft device primarily accommodates two regions which are at right angles to one another, i.e. the lockable shutting system and the protective chamber which completely encloses the handbrake release button. When the handbrake has been pulled absolutely tight, the actual motor vehicle antitheft device with the protective chamber is pushed over the handbrake release button to the stop in order then to snap the locking belt into the annular groove of the handbrake release button by means of a spanner or a combination lock device. The handbrake will then be protected against unauthorised use. The small overall dimensions and the solid structure of the motor vehicle antitheft device provide prospective thieves with hardly any surface on which to operate, especially as the motor vehicle antitheft device is in addition... endlessly and axially around the... Original abstract incomplete. <IMAGE>
Patent DE-3812111-A1 (DE)
Title: Threaded screw
Inventor: HABERLE WALTER
IPC: F16B35/02
Filed: 1988-04-12
Abstract: In the case of a threaded screw (1), the threaded shaft (2) is divided up, by a slit (3) running centrically in the longitudinal direction, into two halves (4, 5) and is provided, on the two longitudinal sides, with two free surfaces (7) running perpendicularly with respect to the slit (3). The threaded shaft (2) can be introduced without hindrance through the threaded parts, located on the two longitudinal sides of the slit (3), into the threaded hole, the two halves (4, 5) of the threaded shaft (2) first of all yielding towards the centre of the shaft and then latching, by means of their external thread, into the internal thread of the threaded hole. <IMAGE>
Patent DE-3812332-A1 (DE)
Title: Method and apparatus for separating or slitting rigid material, in particular wood
IPC: B26D3/28
Filed: 1988-04-14
Abstract: A method and apparatus to serve to separate or slit a rigid material (10a), in particular wood, having a modulus of elasticity of, preferably, about 50,000 to 400,000 kg/cm<2>. A narrow tool having tube-removing elements makes a gap (38a) of final width in the material (10a) at a cutting speed of more than 35 m/s. A profiled piece of wood (12a) is bent away from the remainder of the material (10a) out of the splitting plane (11a) immediately after the passage of the chip-removing elements. The profiled piece of wood (12a) is bent away to such an extent that the remaining material (10a) is brought out of engagement with the tool as soon as the chip removal has taken place. In order to render this method known from the main patent 3635318 and the device for carrying it out also usable for other sawing techniques, the tool is a saw band (2) of a band saw (Fig. 2). <IMAGE>
Patent DE-3817941-A1 (DE)
Inventor: DOLLHOPF RUEDIGER DIPL ING
IPC: B29C48/455
Filed: 1988-05-27
Abstract: Method of extruding and a single, twin or multiscrew extruder. 
<??>In the extruder, the thread of the screw or of each of the screws is partly left-handed and partly right-handed, so that the material to be processed is in part conveyed in a direction A and in another part conveyed in an opposite direction B. 
<??>The method is a venting extrusion method and the extruder is a vented extruder: the following are provided
 - a back venting arrangement (7, 22) at the end (8, 19) of the screw (1, 16) or screws (1, 16), if the material to be processed is led away from this end (8, 19),
 and/or
 - a back venting arrangement (41, 52) at the point between the thread sections of the screw (1, 16) or screws (1, 16) from where the material to be processed is led away in opposite directions B and A. 
<??>According to the invention,
 - continuous operation is possible,
 - no dead zones and breakaway edges are formed,
 - the back venting arrangement (7, 22, 41, 52) can be easily sealed against ingress of oxygen,
 - thermally and oxidatively sensitive products, such as nylon 66, can also be processed without detriment and in continuous operation (example: synthetic fibre extrusion spinning). 
<IMAGE>
Patent DE-3820642-A1 (DE)
Title: Length-adjustable rod
Inventor: RENNER HERBERT
IPC: B62D7/20
Filed: 1988-06-18
Abstract: The invention relates to a length-adjustable rod, in particular a track rod for steering a motor vehicle, having two rod portions which can be adjusted with respect to each other and having an adjusting element. In order to avoid a relative rotation between the rod portions and to obtain simple adjustability, the two rod portions are provided with toothings which lie opposite each other and are in engagement with a gear lying in between. The gear is secured in a sleeve which surrounds the rod portions.
Patent DE-3826089-A1 (DE)
Title: Membrane-textile laminate and production thereof
Inventor: JAEGER HELMUT
IPC: D06N3/00
Filed: 1988-08-01
Abstract: A membrane film which is melt-adhesively connected to a nonwoven base and which is water- and air-tight and also water-vapour-permeable adheres exclusively as a result of contact with hotmelt-adherable binding fibres contained in a sufficient amount on the film side of the nonwoven. The production process consists of continuously effecting the web laydown, the inner thermal consolidation of the fibres and subsequently the lamination with the membrane film via the hotmelt adhesive fibres.
Patent DE-3826258-A1 (DE)
Title: Glazing
IPC: E06B3/68
Filed: 1988-08-02
Abstract: In order to brace the borders of panes (12, 14) which become soft and deform in the event of a fire, i.e. upon heating up, in order that said borders are prevented from slipping out, peripheral resilient mouldings (20) are arranged on the frame or the facade elements (10), the legs (22, 44) of said mouldings being prestressed on the panes (12, 14). The panes are retained on the frame or the facade elements (10) by clamping mouldings (16). <IMAGE>
Patent DE-3828679-A1 (DE)
Title: Device for squeezing out wet cloths
Inventor: RITTER GEORG DIPL ING
IPC: A47L13/59
Filed: 1988-08-24
Abstract: With this innovation, tiresome energy- and time-consuming floor and window cleaning is quite considerably facilitated. The device according to the invention which is made, for example, of metal and plastic parts undertakes, in this respect, the wringing-out of the damp cloth almost automatically. It is attached in a freely suspended manner above a preferably rectangular cleaning bucket and designed in such a way that when it is pushed down by a few centimetres the cleaning cloth is forcefully and effectively squeezed out in a squeezing channel. For squeezing out wet washing, fruit and potatoes, for cracking nuts or for production processes in trade and industry and many other applications, alternatives can be easily developed. As can be seen in the attached side view, the device constitutes an astonishingly simple solution. <IMAGE>
Patent DE-3836869-A1 (DE)
Title: Method of checking a gas valve and arrangement for carrying out the method
Inventor: KIND REINER
IPC: F23N1/08
Filed: 1988-10-27
Abstract: Method of checking the closing of a fuel valve of a fuel-fired appliance, having a burner controlled by the valve, a flame-monitoring device and a further fuel valve. When the fuel-fired appliance is switched off, the valve to be checked is closed, but the other is held open, and after a certain time has expired a disturbing signal is transmitted if a flame signal continues to appear. <IMAGE>
Patent DE-3837145-A1 (DE)
Title: Securing device for shaft coverings, in particular for cellar gratings
Inventor: BADER JOACHIM DIPL ING
IPC: E04F17/06
Filed: 1988-11-02
Abstract: A securing device (3) for shaft coverings (2), in particular for cellar gratings, has a spacing device (10), of which the lower part (9) is fastened, by a fastening dowel (15), on a shaft wall (12) of the shaft (1) which is to be covered, and the upper part (8) is equipped with a connecting device (4, 7) which can be fastened on the shaft covering (2). The spacing device (10) exhibits a portion (11) which can be lengthened and is coupled, via a tongue (13), to an indicating device (14, 20, 22, 23, 24, 25, 26, 27) which is triggered by a movement, of said portion (11), which is produced upon raising the shaft covering (2). <IMAGE>
Patent DE-3839447-A1 (DE)
Title: Baking sheet cleaning machine
Inventor: HEPKE WILHELM
IPC: A21B3/16
Filed: 1988-11-23
Abstract: Published without abstract.
Patent DE-3844291-A1 (DE)
Title: Device for gathered curtains
Inventor: SPRINK ERNA
IPC: A47H5/14
Filed: 1988-12-30
Abstract: Published without abstract.