baber/WOPTO huggingface dataset:
Patent DE-3807634-A1 (DE)
Title: Heatable particle-free liquid bath
Inventor: SCHUELKE KARL ALBERT DIPL ING
IPC: B01D21/00
Filed: 1988-03-09
Abstract: Baths for the wet-chemical purification or structuring of substrates of semiconductor technology or articles of microcircuitry are subject to rapid impairment due to the formation of particles which, when the concentration increases, require an exchange of the bath liquid. The liquid bath can be kept permanently clean by circulating the hot liquid as a result of natural circulation and by the hot liquid being able to come into exchange with a cold circulation at the lowest point via a boundary layer, where entrained particles can separate out as a result of gravity. The cold circulation is driven conventionally by a circulation pump and the liquid is purified in a filter or sedimented. Heatable liquid baths of the type described are used in semiconductor technology or microcircuitry.
Patent DE-3809251-A1 (DE)
Title: Heating installation and method of operating a heating installation
Inventor: MOOSMANN JOSEF
IPC: F24D11/02
Filed: 1988-03-18
Abstract: A heating installation contains at least one heat generator which, to reduce the burner operating times, is interconnected with a buffer store, the buffer store being connected in parallel between the heat generator and the heating circuit, and a further heat generator - consisting of an absorber circuit with a heat pump - being connected in parallel with the heat generator. With the installation described, long burner operating times are achieved with minimum standstill and radiation losses of the heat generator. <IMAGE>
Patent DE-3814274-A1 (DE)
Title: Process for preparing active sodium carbonate
Inventor: MOCEK KAREL DIPL ING
IPC: B01D53/50
Filed: 1988-04-27
Abstract: Process for preparing active sodium carbonate in which solid sodium carbonate decahydrate having the composition Na2CO3.10H2O or its mixture with water is dried by the gradual lowering of the water of crystallisation content until the composition corresponds to the hydrate Na2CO3.nH2O, where n = 0 to 1. In this process, the lowering of the water of crystallisation content until the composition corresponds to the hydrate Na2CO3.nH2O, where n = 0 to 5, is carried out at temperatures below 32@C. The final product prepared in this way is characterised by a high chemical activity (E) which can be exploited, in particular, for desulphurisation purposes. The starting material for the production of the active substance is a cheap and readily available raw material, namely sodium carbonate decahydrate. <IMAGE>
Patent DE-3814417-A1 (DE)
Title: Device on a fence post for fastening a tensioning wire
IPC: E04H17/10
Filed: 1988-04-28
Abstract: In order to provide a device on a fence post for fastening a tensioning wire, composed of a plastic, dowel-like expansion sleeve which can be plugged into a fastening opening of the fence post and of a U-shaped, metal tensioning-wire retaining means, which, along with inexpensive production and simple mounting, ensures high drawing-out values and, furthermore, to the greatest extent prevents spontaneous or unauthorised loosening of the tensioning wire, it is proposed that the abutment (6) be designed as an oval plate and have two expansion sleeves (3) which are spaced apart in the longitudinal direction and into which the ends of the tensioning-wire retaining means (12) can be inserted, that the legs of the tensioning-wire retaining means (12) be connected to the base (8) via bent-off portions (13) which run transversely with respect to the longitudinal extent of the legs and can be inserted into a depression (14) of the plate, said depression intersecting the openings of the expansion sleeves (3), and that a cutout (15) be formed which intersects the depression (14) and, along with the base (8) of the tensioning-wire retaining means (12), delimits a circular clearance. <IMAGE>
Patent DE-3817830-A1 (DE)
Title: Packing or unpacking machine
IPC: B65B21/18
Filed: 1988-05-26
Abstract: In a machine for packing articles into and unpacking them out of cases, preferably for bottles into and out of bottle crates, a transfer element having carrier or gripper heads for the articles is moved to and fro, by means of at least one raising and lowering device, on an arcuately curved path of movement, extending about a horizontal axis, between two respective positions formed above conveyor tracks for the articles and/or cases. The raising and lowering device consists essentially of two arms, the first arm of which carries the transfer element pivotably about a first horizontal axis and is fastened to the second arm pivotably about a second horizontal axis, the second arm being pivotable to and fro about a third horizontal fixed axis on a machine frame by means of a drive. By means of two planetary gears provided on the two arms, during the pivoting of the second arm about the third axis, the first arm is pivoted relative to the second arm, but also the transfer element relative to the first arm, in such a way that, on the one hand, the arcuate path of movement is maintained for the transfer element and, on the other hand, an always uniform orientation is also maintained for the transfer element or for the carrier or gripper heads.
Patent DE-3818924-A1 (DE)
Title: Power-driven screwing tool
Inventor: SASAKI KATSUHIKO
IPC: B25B23/14
Filed: 1988-06-02
Abstract: A power-driven screwing tool has a casing (1), a drive motor inside the casing and a main gearwheel (3) rotated by the drive motor. A spindle (5) is axially movably mounted in the casing and an insert piece (6) is fixed to said spindle. A groove is formed in the rear end of the spindle. Provision is made for a dog-clutch mechanism (7) which is actuated by axial movement of the spindle, so that the rotary movement can be transmitted or interrupted between the main gear wheel and the spindle. The dog-clutch mechanism contains a fixed clutch element (8) on the main gearwheel and a movable clutch element (9) on the spindle at its rear end. Formed in the front end of the movable clutch element is a groove which lies opposite the groove in the spindle. One of the grooves in the spindle or in the movable clutch element is inclined in the axial direction. A clutch member (12) is inserted between the groove in the spindle and the groove in the movable clutch element. Arranged between the main gearwheel and the movable clutch element is a spring (13) which normally pushes the movable clutch element away from the fixed clutch element. <IMAGE>
Patent DE-3822370-A1 (DE)
Title: Ratchet spanner
Inventor: GRZANNA KURT
IPC: B25B13/46
Filed: 1988-06-29
Abstract: Ratchet spanner having an open insert rotatably mounted in a jaw-like head of a lever, the insert having locking teeth which form, together with intermediate members arranged in the head, a ratchet mechanism. The arrangement is designed such that the power transmission upon rotation of the insert in the head remains secured in spite of intermediate members provided at the jaws, which members are constructed as spring-loaded locking pawls and follow locking teeth of preset spacing which are distributed at equal distances over the remaining outer circumference of the insert, the spring loading of the locking pawls being produced by a spring arrangement which surrounds all of the pawls and forms a partial circumference of the surface of a cylinder, provision being made for an actuating element which surrounds the locking pawls, is mounted so as to be tangentially displaceable and in one of its positions acts on the locking pawls in such a way that they are disengaged from the toothing. <IMAGE>
Patent DE-3823552-A1 (DE)
Inventor: HEGELER WILHELM
IPC: H03D1/22
Filed: 1988-07-12
Abstract: In a circuit arrangement for the demodulation of a carrier-frequency signal, particularly in a radio data system, several mixed signals of different phase relationship and having a frequency which is outside the information band of the carrier-frequency signal are generated and in each case mixed with the carrier-frequency signal. After filtering and analog/digital conversion, the mixed products produced are mixed into the baseband, (instantaneous values) of different mixed products being used in cyclic sequence for forming one output signal in each case. <IMAGE>
Patent DE-3830738-A1 (DE)
Inventor: SCHMIDEK REINHARD
IPC: E04B1/19
Filed: 1988-09-09
Abstract: It is known to connect the ends of tubular elements (10) for three- dimensional framework to junction pieces (11) by cap screws (12). The cap screws (12) are mounted in a rotatable and axially displaceable manner in the end areas of the elements (10). Their axial movement to the outside is limited in each case by a stop (21) in the end area of each element (10). These stops were previously formed by additional parts which were fixed in the end area of the elements by, for example, welding, brazing, etc. The object of the invention is to avoid these additional parts and their complicated fastening. For this purpose, the stop (21) for the cap screws (12) is in each case formed by forming end sections (24) of the tubular elements (10) in their hollow space. In the case of tubular elements (10) having end sections (22) tapered in a frustum shape, the head (25) of the screws (12) can in addition be driven against the inner wall (27) of these end sections (22) if it is accordingly constructed in a matching frustum shape. 
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Patent DE-3834134-A1 (DE)
Title: Centrifuge drum with a plate insert
Inventor: ZETTIER KARL-HEINZ
IPC: B04B1/08
Filed: 1988-10-07
Abstract: The plate insert 3 of the centrifuge drum 1 is provided with a first arrangement of riser channels 7 and a second arrangement of riser channels 8. The first riser channels 7 are connected to the inlet space 4 via first connection channels 5 and the second riser channels 8 are connected to the inlet space 4 via second connection channels 6. An axially displaceable closure element 9 connects the optional feeding of the first or second connection channels 5, 6 and the riser channels 7, 8 associated with them. The displacement of the closure element 9 can take place without disassembling the centrifuge drum 1 by turning the threaded pin 11 or actuating the rod 13. <IMAGE>
Patent DE-3835374-A1 (DE)
Title: Process for purifying waste water in an activation tank
Inventor: KINN PASCAL
IPC: C02F3/00
Filed: 1988-10-18
Abstract: Process for purifying waste water (effluent) in an activation tank.   nown waste water purification processes which degrade nitrogen compounds with the aid a nitrification phase and a subsequent denitrification phase have the disadvantage that they cannot operate in a load-dependent manner and thus cannot operate optimally. According to the invention it is provided to determine each of the time periods for the nitrification phase and denitrification phase in dependence on the amount of oxygen introduced into the activation tank, the power requirement of the aeration device which is assigned to the activation tank being able to serve in a simple manner as a value for the (O2) feed. The novel plants therefore operate in a load-dependent manner. Application for sewage treatment plants having spatial loadings below 0.25 kg BOD5 per m<3>. <IMAGE>
Patent DE-3837253-A1 (DE)
Title: V-engine
Inventor: ROSCHE PAUL
IPC: F02B67/06
Filed: 1988-11-03
Abstract: In a V-engine the cylinder banks are staggered in the direction of the crankshaft axis, a drive device for a control shaft being provided in each cylinder offset and each drive device including a countershaft transmission interacting with the crankshaft. In order to obtain a short overall length of the V-engine, each countershaft transmission interacting with the crankshaft has a crankshaft gear, which is arranged on a crank web provided in the area of the cylinder bank offset.
Patent DE-3839155-A1 (DE)
Inventor: HARRE MICHAEL DIPL CHEM DR
IPC: C07C405/00
Filed: 1988-11-17
Abstract: Process for producing carbacyclins of formula (I) wherein R1 is a straight-chain or branched C1-C7 alkyl group, a straight-chain or branched C2-C7 alkenyl group or a straight-chain or branched C2-C7 alkinyl group, and R2 and R3 can be the same or different and can stand for hydrogen, C1-C2 alkyl, chlorine or bromine or together with the double bond a triple bond, characterized in that a bicyclic ketone of formula (II) wherein R1, R2 an R3 have the above mentioned meanings is reacted with 5-10 equivalents of a reagent of formula (VI) in the presence of 8-10 equivalents of a base at 0-40 DEG C for 0.5 to 4 hours in the solvents dimethoxyethane, 1,3-dimethylimidazolidin-2-one, dimethylformamide, dimethylsulfoxide, tetrahydrofurane, toluol, dibenzo-18-crown-6 or in mixtures thereof.
Patent DE-3841545-A1 (DE)
Title: Vacuum-packaging apparatus, especially for foodstuffs
Inventor: PLEWA MANFRED DIPL ING
IPC: B65B31/02
Filed: 1988-12-09
Abstract: The invention relates to a vacuum-packaging apparatus, especially for foodstuffs, according to the pre-characterising clause of Claim 1. The object of the invention is to improve an apparatus of the type in question, in such a way that ergonomically advantageous conditions and an easy cleaning of the space located underneath the apparatus are possible. This object is achieved, according to the invention, in that the change-over valve and the vacuum pump are mounted on the carrier, the pistons being arranged in cylindrical chambers designed as recesses in the carrier, and in that the switchboard together with a control is mounted on the frame, the support being a plate which is at a distance from the floor surface.
Patent DE-3903906-A1 (DE)
Title: Apparatus on spindle-shaping machines for working wood or plastic
Inventor: MARTIN OTTO
IPC: B27C5/04
Filed: 1989-02-10
Abstract: The spindle-shaping machine is equipped, on the adjusting spindle of the fence, with a pulse generator which measures the feed travel of the fence with respect to the centre axis of the cutting tool. This value is input into a computer, into which the diameter of the cutting tool can also be input. The computer forms the difference between half the cutter diameter and the adjusting travel of the fence, so that the cutting depth is displayed. In this way, it is possible to directly set the desired cutting depth at the adjusting spindle of the fence.
Patent DE-3904739-A1 (DE)
Title: Rotary switch
Inventor: DURAN RIZO JOSE ANTONIO
IPC: H01H19/63
Filed: 1989-02-16
Abstract: The rotary switch in the present invention consists of a housing which is closed by a cover which is provided with a rotation shaft having a disc which is firmly seated in the lower part of this shaft and has corresponding projections or studs emerging from it at right angles, the cover having terminal holding elements. The rotary switch is characterised in that a holding part constructed in a U-shape is seated on the underneath of the cover as a pressure element for the projections or studs which project on the side surface of the disc which is firmly connected to the rotation shaft of the switch, while an elastic contact link is located in the interior of the housing and terminals project from the underneath of the housing.
Patent DE-3905069-A1 (DE)
Inventor: BRANDSTETTER RUDI DIPL ING
IPC: B21D43/05
Filed: 1989-02-18
Abstract: The hybrid press plant comprises a plurality of individual presses with a drawing press (1) and progressive presses (2). These are set up via stands (16, 17) on common mounting surfaces (20). A tool is assigned to each press (1, 2), comprising a top piece, a ram (26), a press table (15) and a sliding table (11). The tools can be replaced by means of the sliding table (11). Guided through the hybrid press plant is a transfer device (13), the individual parts of which are arranged above the plane in which the sheet-metal parts are transported and grasp the sheet-metal parts from above. Intermediate deposition points between two processing stages are designated by (12). This reduces the length of the transfer movement of the sheet- metal parts per punch stroke. Large-area and thin-walled, hence intrinsically stable, sheet-metal parts can be transferred. 
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Patent DE-3906471-A1 (DE)
Title: Partition plate for the rotatable delivery drum of a potato harvester machine
Inventor: KUDO TAKEO
IPC: B65G29/02
Filed: 1989-03-01
Abstract: In a potato harvester machine with a carousel-like delivery drum which revolves in the vertical plane and which has compartments open towards the axis of rotation for receiving the potatoes, the peripheral compartment walls are made up of cables (2b) and the radial compartment walls consist of partition plates (1) and separate side bars (14) which in turn are connected by screw bolts (3, 4a) to the rectangular frame (2b) of the drum. The concept of the invention lies principally in the idea of dividing the radial compartment walls into the said partition plate (1) and the said side bars (14) and in producing these components from flexible hard rubber. <IMAGE>
Patent DE-3910519-A1 (DE)
Title: Conveying apparatus
Inventor: DOERR MAX
IPC: B65G47/26
Filed: 1989-04-01
Abstract: A roller conveyor for the individual forward conveyance of articles has a multiplicity of supporting rollers (9) which are arranged so as to be drivable by a drive belt (14) or the like running underneath them and so as to be adjustable out of their drive position resting on the drive belt (14) into a position of rest lifted off from the drive belt (14). The supporting rollers (9) form successive supporting-roller sets (20, 21, 22, 23), each with a lifting-off device for jointly lifting off the supporting rollers of the respective supporting-roller set into the position of rest. The lifting-off device has an actuating member (for example 25) which is arranged in the region of the respective roller set preceding in the conveying direction (8) and which projects upwards above the supporting rollers (9). It contains, furthermore, a lifting-off part which is connected to the actuating member (25) via a linkage and which extends along the respective roller set (20, 21, 22, 23) and engages under the supporting rollers (9) of the latter, in such a way that an article coming onto the actuating member (25) presses the actuating member downwards, the downward movement of which is converted via the linkage into an upward movement of the lifting-off part and therefore of the associated roller set. When the actuating member (25) comes free of the article again, the lifting-off device returns to its initial position automatically. The articles are thereby conveyed forwards at a distance from one another. <IMAGE>
Patent DE-3916304-A1 (DE)
Inventor: PUPLAT RUDOLF
IPC: E01B25/24
Filed: 1989-05-19
Abstract: A slaughterhouse or cold store conveyor (2) has  (a) a transport web (8) for transport hooks (10); (b) supporting brackets (6) which are attached to a supporting structure (4) for the conveyor (2), distributed along the transport track (8), and support the transport track (8); (c) two substantially U-shaped rails (12) which - with their open sides facing each other - are attached to the supporting brackets (6) above the transport track (8); and (d) a drive chain (24) with entraining carriages (20) which run with the support of the rails (12) and have downward-projecting dogs (26) for the transport hooks (10),  characterised in that  (e) the rails are aluminium sections (12); and  (f) the aluminium sections (12) are screwed to the brackets (6). <IMAGE>
Patent DE-3924028-A1 (DE)
Title: Multiple coupler for optical fibres - has fluid members, each with dia. corresp. to that of optical fibre plus coating
Inventor: KUNZE DIETER DIPL ING
IPC: G02B6/38
Filed: 1989-07-18
Abstract: The coupler handles several optical fibre pairs, whose ends are aligned in a groove. The grooves are formed by three intermediate spaces between each two parallel, round guide members, set in a plane. The guide members (1) have a dia. corresp. to that of the optical fibres (2, 3) plus a coating. The guide members have radially elastically compressible sections and are flexible. The optical fibre pairs are secured between two identical rows of guide members. The latter (1, 4) are pref. formed by optical fibres of identical dia. as the fibres to be coupled and also provided with a coating. ADVANTAGE - Easy removal of individual optical fibre pairs, without need to decouple all pairs.
Patent DE-3933784-A1 (DE)
Title: Device for regeneration of water softeners in washing machine - regenerates water softener during each washing cycle more than once, thus allowing size and cost of water softener to be reduced
Inventor: KAEFFERLEIN HEINZ
IPC: D06F39/00
Filed: 1989-10-10
Abstract: The water softener in an automatic washing machine or dishwasher is regenerated after a fraction, esp a half, of the water required for the washing programme has passed through it, and a further regeneration is carried out after the last softened water rinsing stage in the programme is complete. A first regeneration may be performed after the pre-rinsing stage and the washing stage, or a following intermediate rinsing stage in an automatic dishwasher. Alternatively, regeneration may first take place during the washing stage or the emptying procedure immediately following the washing stage. A period of at least one min is allowed to elapse after the introduction of the regenerating material into the softener, after which the ion exchanger is rinsed and the water coming from it during a certain period  immediately following rinsing is allowed to run to waste.
Patent DE-3934917-A1 (DE)
Inventor: GUEHNE WIELAND
IPC: A45F3/02
Filed: 1989-10-20
Abstract: The invention relates to a carrying belt arrangement for a vacuum cleaner. The carrying belt is integrated directly into a hand grip at the end of the vacuum cleaner hose. The carrying belt arrangement of the invention defines a storage compartment in which the carrying belt is wound while at the same time defining a hand grip. The carrying belt arrangement includes first and second parts of which the first part is stationary. The second part is rotatably mounted on the first part and includes the drum on which the carrying belt is wound. The first part includes a cover which extends over the drum and includes a slot through which the carrying belt passes. The drum and cover conjointly define the storage compartment for the carrying belt.
Patent DE-3935818-A1 (DE)
Title: Washing appts. for infected wound - consists of cap fitted with nozzle for spraying cleansing solution
Inventor: NEHER WOLFGANG DR
IPC: A61M3/02
Filed: 1989-10-27
Abstract: The appts. is used for washing an infected wound which is difficult to heal.  It may be used for washing ulcers on a patient's leg.  The appts. consists of a hemispherical cap (1) which is placed over the wound or ulcer. A cleansing solution is supplied by a pump to a spray nozzle (2) fitted in the dome of the cap. The used solution is removed by  a second pump which is connected to an outlet (3) near the base of the cap.  In the case where the wound or ulcer is on an extremity such as a finger or toe, the cap is shaped to fit over the finger  or toe. USE - washing.of infected wounds and ulcers.
Patent DE-3936032-A1 (DE)
Inventor: BUECHLER CHRISTIAN
IPC: G11B7/09
Filed: 1989-10-28
Abstract: The invention concerns an optical scanning device which scans the frequency-warbled data tracks of a recording medium, the scanning light beam being reflected from the recording medium on to a four-quadrant photodetector (PD) with four photodiodes (A, B, C, D). In order to be able to compensate automatically for offset voltages produced in the focussing-control loop by, for instance, temperature fluctuations, the focussing signal and the track error signal are input into a multiplier circuit (M). The multiplier output is fed through a low-pass filter (TP) and as a compensation voltage to the focussing-control loop.