baber/WOPTO huggingface dataset:
Patent DE-4028666-A1 (DE)
Title: New immunosuppressive and antiinflammatory FR520 derivs. -  for treating e.g. transplant resistance, rheumatoid arthritis, etc. are prepd. by acetylating 20,24,33-tri:hydroxy cpds.
Inventor: EDMUNDS ANDREW J F DR
IPC: C07D498/22
Filed: 1990-09-10
Abstract: New 19,22-furano derivs. of FR520 of formula (I) are new: where R2 = Me, Et, n-propyl or allyl; R3 = OH or OMe; and Ac = acetyl. (I) are made by conventional acylation of the 20,24,33-trihydroxy cpds.. Reaction is e.g. in pyridine, opt. in the presence of 4-dimethylaminopyridine (A), using acetic anhydride. USE/ADVANTAGE - (I) have immunosuppressive, antiinflammatory and antiproliferative activities and so can be used to treat e.g. transplant rejection; rheumatoid arthritis; multiple sclerosis; diabetes; dermatitis; acne etc.. They can be admin. topically (at a concn. of 1-3%) or systemically at 0.15-1.5 mg/kg/day. (I) also increase the activity, effect and/or sensitivity of other chemotherapeutic agents, e.g. to reduce the normal dose of toxic antineoplastic and cytostatic agents.
Patent DE-4037926-A1 (DE)
Title: Electron beam working arrangement e.g. for X=ray mask prodn. - uses gas which is concentrated at impact point of beam to avoid influencing beam
Inventor: MUELLER KARL-HEINZ DR RER NAT
IPC: B23K15/10
Filed: 1990-11-26
Abstract: The arrangement for working an object (2) in a very restricted area (2a) includes a focussed beam (3) in which the gas is passed into a gas receiving body (6) arranged just above the object. The body (6) has an opening (12) facing the object and another opening (13) acting as a valve for the passage of the beam. The beam is pref. an electron beam and the object is an X-ray mask. The opening (14) for the beam is pref. a valve tube. The gas is produced in a device in which a heating unit heats material which gives off a gas. The electron beam can also be subjected to a first valve tube. A flushing gas may also be fed to the body (6). The beam is controlled by a detector (19) located below the object (2) and producing a raster image of the object. USE/ADVANTAGE - For working X-ray masks for X-ray lithography. High gas pressure in region where beam meets workpiece increases working speed without scattering beam.
Patent DE-4040337-A1 (DE)
Inventor: HERTRICH STEFFEN
IPC: F16B21/18
Filed: 1990-12-17
Abstract: The invention concerns a longitudinal-locking device for two components (1, 2), one of which has a bore (3) into which the external surface of the other is inserted. The first component (1) has an assembly groove (5) and, located a certain distance from this, a gripping surface (8). The other component (2) has an assembly shoulder (11) and an annular groove (12) with a second gripping surface (14). The two gripping surfaces (8, 14) are equiaxial and conical in shape, with different cone angles. A circlip (7) is fitted in the wedge-section gap between the two gripping surface (8, 14). The two gripping surfaces (8, 14) enable the position of the two components (1, 2) relative to each other to be adjusted to allow for any radial stresses in the circlip (7).
Patent DE-4041739-A1 (DE)
Title: Attaching plastics fan wheel to metal rotor - involves short barbed hook on surface of rotor
Inventor: WROBEL GUENTER
IPC: F04D29/32
Filed: 1990-12-21
Abstract: The fan impeller which has a coaxially driven rotor is for an electric motor. The hub of the plastics impeller is joined to the metal rotor of the electric motor. A short barbed-hook projection (6) is arranged on an outer surface of a driven rotor-side element (5) and the essentially smooth inner surface of the impeller hub (2) is pressed on to the outer surface of the rotor. USE/ADVANTAGE - Method of effecting a join between an impeller and a rotor which is suitable for mass production.
Patent DE-4042248-A1 (DE)
Title: Intestine section dilation forceps - has scale indicating valtrac ring size needed simultaneously
Inventor: THIEDE ARNULF PROF DR MED
IPC: A61B90/00
Filed: 1990-12-31
Abstract: The forceps dilate a section of the intestine and simultaneously measure if for a Valtrac ring. Angular jaws dilate the section concerned to maximum to allow insertion of a bio-fragmentary ring, while the necessary ring size is simultaneously read off from a graduated scale. The jaws can be desiged so that there is no injury during dilation, while the scale indicates the maximum ring size possible. USE - For intestinal anastomosis.
Patent DE-4100206-A1 (DE)
Title: Hydroelectric deep-drawing device - has drawing die cushion plate with multi-point drive and short stroke piston
Inventor: BIELFELDT FRIEDRICH BERND
IPC: B21D24/08
Filed: 1991-01-06
Abstract: The device is for use in a press for sheet metal blanks. It has a sheet holder plate, a guided drawing punch, a hydraulic drawing die cushion plate. The mechanical drawing dies support themselves on a common cushion plate, moved up and down by hydraulic adjusting members. A drawing die cushion plate (8) has multi-point drive, according to the shape of the workpiece. Within the plate, each target point (20) has an associated hydraulic short stroke piston of max. 10mm, with push-on drawing dies (13), acc. to the hole pattern (18) of the table. Each piston has a cylinder with selective hydraulic force fields (21,22), acc. to workpiece or sheet holder plate. The die cushion plate is supported in the four corners with hydraulic differential cylinder-piston systems (3,14).
Patent DE-4102297-A1 (DE)
Title: Fluid hammer prevention equipment - comprises pipe extending from union in feed pipe
Inventor: GROSSMANN HOLGER DIPL ING
IPC: F16L55/04
Filed: 1991-01-26
Abstract: The equipment prevents fluid-hammer in equipment to which a medium is fed both in the liq. and gaseous state. The equipment comprises a union in the feed pipe before the set, and from which a length of pipe extends. It is arranged so that under the laws of inertia the fluid tends to flow into it. This pipe can be in line with the preceding portion of the feed pipe. It can be sealed off gas- and water-tight and can run in a spiral. USE - Partic. for the compressor of an automotive air-conditioning system.
Patent DE-4102677-A1 (DE)
Title: Current step supply for heating conductor for sticking long parts - has measurement and control circuits controlling current according to heating conductor resistance
Inventor: GRUBER BRUNO
IPC: H02M9/06
Filed: 1991-01-30
Abstract: A current step supply for a molten adhesive coated heating conductor contains a mains transformer and an on/off switch forming a circuit for the flow of current through the heating conductor. In addition to the current step circuit (15) there is a measurement circuit (20) which detects the resistance value of the heating conductor (2) connected to the supply (1). A control stage (9) between the measurement and current step circuits controls the current in the current circuit according to the heating conductor resistance. USE/ADVANTAGE - For use in sticking long parts. Current supply is partic. suitable for processing coated heating conductor.
Patent DE-4106788-A1 (DE)
Title: Pipe connection with force restriction for household pipes - has inner and outer rings with bore, seal and shear pin
IPC: F16L55/10
Filed: 1991-03-04
Abstract: The force-restricted pipe connection (20) for household pipes such as gas or water pipes has an inner pipe (12) serving as the flow line (11) and an outer pipe (22) attachable to the outflow (21) by an ideal break point. The wall of the outer pipe (22) has in areas two axially loosely interfitting ring parts (23,24), i.e. an inner and outer ring part, with an insert joint (25) allowing axial displacement (46) between the two ring parts. At least one bore (41) set in the two ring parts passes across the insert joint (25) whilst a seal (51) is set in the joint area sealed from the medium and set back relative to the bore (41) whilst allowing axial displacement (46). A shear pin (42) mounted in the bore (41) connects the ring ring parts axially secured during telescopic movement (40) but in the event of a defined shear force breaks off to allow axial displacement (46). ADVANTAGE - Simplified construction whereby pipe connection is reliably sepd. when certain boundary force is exceeded.
Patent DE-4109275-A1 (DE)
Title: Packing for rollers with tubular longitudinal slit wrapper - has two flexible adhesive strips covering slit, and tear off thread, with end discs
Inventor: GRAEFENSTEIN THOMAS DR
IPC: B65D85/20
Filed: 1991-03-21
Abstract: The packing for rollers consists of a round wrapper the middle part of which does not touch the roller. The wrapping consists of a tube (1) with lengthwise incision closed by two flexible adhesive strips (2) made of degradable textile material placed along the cut edges. At least one of the adhesive strips has a tear-off thread in the middle. Each end of the wrapper has a disc (3) inserted onto the roll-ends and fixed by two inner tubular pieces (4) stuck in one tube-half. The outer diameter of the inner tubular pieces equals the pipe's internal diameter. ADVANTAGE - The packing protects the rolls from being damaged by light and dust; is re-useable or disposable.
Patent DE-4110807-A1 (DE)
Title: Optical cable replacement length for faulty cable sections - comprises core of cabled wires and optical cable tube enclosed in sleeve, fitted with end connectors and wound on drum
Inventor: BAUSCH JOACHIM DR ING
IPC: G02B6/44
Filed: 1991-04-04
Abstract: The is optical cable replacement section used to repair faulty optical cable earth wires on pylons. A cable length on a drum is mounted on a pylon to enable reasonably quick repairs to be made to the faulty section. Cable construction comprises a core of high tensile cabled wires on an optical cable carrying tube, the whole core being enclosed in an extruded plastic sleeve e.g. high density polyethylene (HDPE). A coupling is located at each end of the optical cable and an anchoring wire is wound onto the ends of the cable. The cable is then wound onto a special drum. Repairs to defective cables are made by separating the faulty sections at adjacent pylons and the connection remade with the replacement cable and connector on the mast. USE - The optical cable length is used to replace faulty sections of optical cable earth wire at pylons.
Patent DE-4115354-A1 (DE)
Title: Chemical absorption of gas components from gas stream - by introducing raw gas and fresh adsorbent into filter chambers formed from woven fabric pipes and recirculating adsorbent in dust form
Inventor: BECHTHOLD HORST DR ING
IPC: B01D53/74
Filed: 1991-05-10
Abstract: Raw gas and fresh adsorbent are introduced into filter chambers formed from woven fabric pipes. The adsorbent in dust form is recirculated at 20-80 times the rate at which fresh adsorbent is introduced and a part of the gas is recirculated via a jet. The falling reaction prods. land first on a dust removal unit located above the jets and the dust remover overflow falls to the jet where it is carried by the emerging gas flow and recirculated within the main flow of gas. An assembly incorporates a woven filter pipe within a rectangular housing with an upper base in which the filter pipes are hung. A dust collecting depression is located at the base of the dust bunker which ends in a trough and worm parallel to a slotted jet. The speed of rotation of the worm is regulated by the drive such that the required quantity of dust is pushed to the jet. USE/ADVANTAGE - The efficiency with which adsorbent is consumed is increased and the construction of a compact gas filtration plant is facilitated.
Patent DE-4117671-A1 (DE)
Inventor: FABRY BERND DR
IPC: B03D1/012
Filed: 1991-05-29
Abstract: Minerals can be obtained from non-sulphidic ores by flotation if detergent mixtures are used as the collector and contain (a) salts of sulphonation products of unsaturated fatty acids of the formula (I): R<1>CO-OH, in which R<1>CO is a straight-chain or branched-chain aliphatic acyl group with 12 to 24 carbon atoms and 1 to 5 double bonds; and (b) salts of sulphonation products of unsaturated fatty acid glycerine esters of the formula (II), in which R<2>CO is a straight-chain or branched-chain aliphatic acyl group with 12 to 24 carbon atoms and 1 to 5 double bonds and R<3>CO and R<4>CO, independently of each other, are a straight-chain or branched-chain aliphatic acyl group with 6 to 24 carbon atoms and 0 or 1 to 5 double bonds; plus, optionally, other anionic and/or non-ionic surface-active agents.
Patent DE-4118069-A1 (DE)
Title: Vibrator for crane deployed pile driver - has hydraulically powered gear train which operates two pairs of unbalanced rotors located on pair of axes
Inventor: HALBROCK UDO
IPC: B06B1/16
Filed: 1991-06-01
Abstract: The drive is located in a housing (2), under which a mounting for holding the tool is located, and above, attached via springs, a yoke with an opening for fixing to a crane or other equipment. The vibrating drive consists of two pairs of imbalanced rotors (3, 4) mounted on two axes (5, 6). The rotors are driven by a hydraulically powered drive through gear wheels (9) which drive gear trains on both ends of the axles. USE/ADVANTAGE - Compact and simple vibrating drive for pile driving device.
Patent DE-4118434-A1 (DE)
Title: Electrophotographic reversal wet developing method - immersing bias voltage electrode in developer at potential at least 80 per cent of that of surface of photoreceptor
Inventor: KURIU SADAO
IPC: G03G15/10
Filed: 1991-06-05
Abstract: A bias voltage is applied to a linear bias electrode (6).  Developer (9) can adhere to the photosensitive layer (3) of the transported photoreceptor (1). The bias electrode is immersed in the developer. The developer container includes a squeezer roller (8) pressed against the photoreceptor. A developer blocking element is installed near the roller (8) in-front of the travel direction of the photoreceptor. ADVANTAGE - Limited edge effect. Excellent tone value reproduction.
Patent DE-4120511-A1 (DE)
Title: Telescopic shower curtain rail - has outer and inner rail each of which has guide groove, forms slot between grooves for runners with slide feet
Inventor: ENGELBERTS LOTHAR
IPC: A47H1/08
Filed: 1991-06-21
Abstract: The telescopic curtain rail (1) has an outer rail (3) enclosing an inner rail (4). The outer rail has a profiled slot (15) extending along the back side surface, with the profile parts (10) on each side of the slot together forming a guide-groove (13). The inner rail, on a level with, and between the outer rail's guide grooves (13), has guide-grooves (14) in which are openings. The part overlapping between the outer and inner rails forms a groove in which runners (11) move which have guide-elements (19) in the form of slide-feet. The slide feet are each positioned on a flange (20) pointing towards the back of the rail and comprising a slot (21) open to the outer rail's back, when the outer and inner rails overlap. ADVANTAGE - Runs securely and smoothly on runners moving between an outer and inner rail.
Patent DE-4121671-A1 (DE)
Title: Optical printing head for high quality images - has opposing voltages applied across open and closed light gate
Inventor: SEYFRIED ULRICH DIPL ING
IPC: G06K15/12
Filed: 1991-06-29
Abstract: The printing head has an electro=optical substrate with an electrode structure for providing light gates, having a number of adjacent control electrodes (2.1 to 2.3) and a counter electrode (3). Two different voltages of opposite polarity are applied between electrode (2.1 to 2.3) the control and the counter electrode (3) in both the open and closed position of each light gate. Pref. a voltage of +200V is applied between the electrodes (2.1 to 2.3; 3) when the gate is open and a voltage of -20V is applied across them when the gate is closed. ADVANTAGE - Reduced light transmission losses.
Patent DE-4123022-A1 (DE)
Title: Self-supporting bobbin carrier - has journal at axis end in a dampener holder and allows a redn. in oscillation and corrosion
Inventor: TAUBERT RAINER
IPC: B65H54/54
Filed: 1991-07-11
Abstract: Bobbin carrier, at a winder, has an axis (12) with a non-rotating journal (11) projecting beyond the sleeve clamping mechanism. The journals are held in a holder (7) which travels on a straight line at right angles to the axis (12), with holding supports (20) which give a dampening action against oscillation during the winding action. Pref. the leading section of the journal (11) is a rod (13), sliding axially within the axis (12). The holder (20) is a drilling with a threading cone. The journal can also be an extension of the fixed axis, and the holder is half open upwards. The support slides between two end positions through a pneumatic cylinder (14) in a ball guide. The journal (11) and the leading end of the rod (13) has one or more grooves (18) for dampeners, such as O-rings (19). ADVANTAGE - The mechanism gives a self-supporting bobbin carrier, for small sleeve dia., which overcomes bending actions with long carriers, to reduce oscillation and corrosion.
Patent DE-4123115-A1 (DE)
Inventor: SCHIEL CHRISTIAN
IPC: D21F3/08
Filed: 1991-07-12
Abstract: The invention concerns a sag-compensation roller with a rotating shell (1), a stationary support bar (2) and a long-sided hydrostatic pressure shoe (8) which can be tilted about a longitudinal axis and contains hydrostatic pressure troughs (11, 12). The shoe fits against the inside wall of the roller shell (1) and is connected to an oblong piston (4) which is mounted so that it can move in the radial direction and which is sealed off from the support bar (2) of the roller. The width (a, b) of the longitudinal ridges (9, 10) which form the edges of the individual troughs (11, 12) is at the most one-twentieth of the width (K) of the piston. The lower side of the shoe (8), i.e. that side facing the support bar (2), is supported hydraulically over most of its width.
Patent DE-4132917-A1 (DE)
Title: Office telephone exchange module - has two overlying circuit boards within housing coupled together via releasable connections
Inventor: PHILIPP GERD ING GRAD
IPC: H05K1/14
Filed: 1991-10-04
Abstract: The telephone exchange has a housing with a flat base plate (11), enclosing a pair of circuit boards (15,22), each lying parallel to the base plate. The components mounted on each circuit board (15,22) face inwards towards one another. The upper circuit board (22) is supported by the lower circuit board (15), with releasable electrical connections between them provided by cooperating plug and socket elements (17,27) mounted on the two boards. Pref. the upper circuit board has alternate circuit configurations, selected depending on the required function of the telephone exchange. ADVANTAGE - compact. Simple modification of telephone exchange circuit. Easier installation.
Patent DE-4139367-A1 (DE)
Inventor: HOMMEL HORST
IPC: C06B45/02
Filed: 1991-11-29
Abstract: The invention is characterized in that, in a single-stage process, a suspension of the explosive powder in an inert solvant is produced, the explosive powder is comminuted by rotating it in a stirrer vessel and the powder subsequently separated off from the inert solvent. The grinding process is terminated when the particle diameter reaches about one-tenth that of the coarse-grain powder used subsequently in the solid-propellant or gas-generator mixture.
Patent DE-4203753-A1 (DE)
Inventor: LANGHAUSER FRANZ DR
IPC: C08F4/6392
Filed: 1992-02-10
Abstract: Catalyst systems for polymerising C2 to C10 alkenes, containing as active components metallocene complexes of metals of sub-groups IV and V of the periodic system, an oligomeric aluminium oxide compound and a cyclic boron compound of general formula (IV) in which R<18> to R<20> are C1 to C10 alkyl groups which may be substituted singly to triply by halogen atoms, C6 to C15 aryl groups or C1 to C10 alkoxy groups; C4 to C7 cycloalkyl groups which may be substituted singly to triply by halogen atoms, C1 to C10 alkyl groups or C1 to C10 alkoxy groups; C1 to C10 alkoxy groups which may be substituted singly to triply by halogen atoms, C1 to C10 alkyl groups or C6 to C15 aryl groups; or C6 to C15 aryl groups which may be substituted singly to fivefold by halogen atoms, C1 to C10 alkyl groups or C1 to C10 alkoxy groups.
Patent DE-4205699-A1 (DE)
Inventor: HOFSAESS PETER
IPC: H01H1/50
Filed: 1992-02-25
Abstract: The invention creates a self-latching device for protection of an apparatus, such as a discharge lamp with a low residual current. For this purpose, the device according to the invention has, in a manner known per se, a protection switch which opens the power supply of the apparatus in the event of overtemperature and is characterised in that a heating element is arranged in parallel with the apparatus and the protection switch, and a normally-open switch, which closes at the switching temperature of the protection switch, is arranged in series therewith. <IMAGE>
Patent DE-4206038-A1 (DE)
Title: Pallet system for handling stacks of boxes or trays - has grippers seizing top layer and laterally engaging clamping strips for holding the layer in position
Inventor: MUELLER FRIEDHELM
IPC: B65G59/04
Filed: 1992-02-27
Abstract: The grippers comprise a holder (3) and vacuum grippers (4) movable w.r.t. the vertical position of the holder. When handling the layers (6,10),a hoist (1) is moved over the stack (11) and the individually seized goods (13,14) are moved up and clamped by strips (7) so that the base lies slightly above  the incoming support plane (8). The latter is held on a support plate (2) and can be moved underneath the complete layer (6).On relaxing the grippers, the seized layer is set down on the support plane which is then moved to set down the layer on the desired pallet.  The support plane is then removed from beneath the layer. USE/ADVANTAGE - For warehouses handling boxes,crates,packages etc.,with reliable handling and transport between pallets.
Patent DE-4206626-A1 (DE)
Inventor: RODI ANTON
IPC: B41F33/08
Filed: 1992-03-03
Abstract: A method for reducing doubling in the start-up phase of a sheet-fed printing press provides a start-up operation essentially without any disturbing mechanical effects. In a first step, all units and components needed for printing are put into operation, except for the engagement of the rubber blanket cylinder (17, 18) with the impression cylinder (19, 20) and that in further steps, with the entry of a first sheet (21) into a respective printing unit (6), its rubber blanket cylinder (17, 18) and impression cylinder (19, 20) are uncoupled from all other printing units (5) so as to essentially have no disturbing effect on the latter and are engaged with each other for production printing. <IMAGE>
Patent DE-4207247-A1 (DE)
Title: Tape measure manufacturing method - anodically oxidising extruded aluminium or alloy sections before cutting tape guides and separation with injection moulded plastics parts
Inventor: KELLER HANS
IPC: G01B3/10
Filed: 1992-03-08
Abstract: The tape measure is made so that the tape (10) wound onto a spool (9) is guided between frame parts (2a,2b) formed at least partially by lengths cut from extruded profile parts of aluminium or aluminium alloy. Before the lengths are cut the profile parts are provided with a protective layer by means of anodic oxidation. Injection moulded plastics parts (4) are arranged between the profile parts as further distance frame parts. ADVANTAGE - Simplified mfr. without wasting materials.
Patent DE-4208913-A1 (DE)
Inventor: BRUNNER REINHARD DIPL ING
IPC: F26B25/06
Filed: 1992-03-20
Abstract: A drying chamber 1 provided for receiving wood 3, 4 to be dried has on a large part of its chamber wall 5 thermal insulation 7. A part 9 of the chamber wall 5 is kept free of thermal insulation 7. This part 9 of the chamber wall 5 forms a condenser for separation of the liquid 39 which has been absorbed from the wood 3, 4 to be dried by a drying medium which can be circulated in the drying chamber 1. 
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