baber/WOPTO huggingface dataset:
Patent DE-2964430-D1 (DE)
Title: Process for preparing symmetric 1,3-disubstituted ureas
Inventor: WOERZ OTTO DR DIPL CHEM
IPC: C07C275/06
Filed: 1979-10-10
Granted: 1983-02-03
Abstract: 1. A process for the preparation of a symmetrical 1,3-disubstituted urea of the formula R-HN-CO-NH-R where R is unbranched or branched alkyl of 1 to 20 carbon atoms, which may be monosubstituted or polysubstited by phenyl or phenoxy, or is unbranched or branched alkoxyalkyl of 2 to 20 carbon atoms or is monocycloalkyl of 3 to 8 carbon atoms or is bicycloalkyl of 6 to 12 carbon atoms, by reacting urea with an amine of the formula RNH2 where R has the above meanings, wherein urea and an amine are reacted in the molar ratio of from 1:2.2 to 1:6 in a reacted fitted with a column, at between 150 and 250 degrees C under a pressure of between 10 and 60 bar, and the resulting ammonia, together with any unconverted amine, is taken off at the top of the column.
Patent DE-3063967-D1 (DE)
Title: Process for chemically recording boundary layer currents
Inventor: DOTZER RICHARD DR
IPC: G01P13/00
Filed: 1980-06-30
Granted: 1983-08-04
Abstract: The chemical plotting of boundary layer flows in liquids with the use of uncompacted, coated, anodically oxidized aluminum surfaces is effected using a colored or uncolored liquid or a coating or pointillization with a substance, preferably a dye, soluble in water or organic media and which can be included or adsorbed in the eloxal layer. The process serves to plot boundary layer flows in water, organic media and oils in a wide temperature range.
Patent DE-3175014-D1 (DE)
Title: Speed control circuit for an electric power tool
Inventor: JEFFERSON KEITH ANDREW
IPC: H02P7/00
Filed: 1981-02-20
Granted: 1986-09-04
Abstract: The present invention relates to electric power tools (10) and in particular to a method and apparatus for controlling the rotational speed of portable electric power tools, for example an electronically-controlled drill, hammer-drill, rotary hammer, and the like, in both the forward and reverse directions. 
<??>It is the primary object of the present invention to provide a speed control circuit for an electric power tool (10) which is adapted to control the speed of the electric motor (14) in both the forward and reverse directions and in which the speed control circuit (76, 80, 82, 86) is adapted to limit the rotational speed of the motor in the reverse direction to keep commutation problems to an acceptable level. 
<??>According to the present invention, a power tool (10) driven by an electric motor (14) includes a speed control circuit (76, 80, 82, 86) for enabling a user to selectably control the forward speed of rotation of the motor, means (RS) for reversing the direction of rotation of the motor, and a speed control and limiting arrangement (98) operable when the direction of rotation of the motor is reversed to automatically limit the speed of rotation of the motor (14) to a predetermined maximum speed while allowing variation up to the maximum speed. 
<??>Additionally, the speed control circuit may also include means (92) for sensing a change in the condition of the reversing switch (RS) and removing power from the motor until its speed drops to a relatively low level, or completely to zero, before re-applying power in the reverse direction.
Patent DE-3260952-D1 (DE)
Title: Preparing p-phenoxy-benzoyl compounds
Inventor: JANSONS VIKTORS
IPC: C07C45/45
Filed: 1982-07-07
Granted: 1984-11-15
Abstract: Substantially pure p-phenoxybenzoyl compounds are prepared by reacting diphenyl ether and an appropriate acyl compound in the presence of hydrogen fluoride. The resulting p-phenoxyaryl alkyl ketone can be converted into p-phenoxybenzoic acid or salts thereof, p-phenoxybenzoyl halide or lower alkyl p-phenoxybenzoate for use in preparing homo- and copolymers containing a p-phenyxobenzoyl repeating unit.
Patent DE-3262730-D1 (DE)
Title: Process for the preparation of 3,6-disubstituted 4-amino-1,2,4-triazin-5-ones
Inventor: SCHMIDT THOMAS DR
IPC: C07D253/07
Filed: 1982-01-11
Granted: 1985-05-02
Abstract: The herbicidal 3,6-substituted 4-amino-1,2,4-triazin-5-one of the general formula    <IMAGE>  (I)  wherein R1 and R2 have the meaning given in the description, is obtained in good yields by a new two-stage cyclization reaction if an  alpha -ketocarboxylic acid amide of the general formula R1-CO-CO-NHR3 (II) is reacted with a hydrazidine of the general formula    <IMAGE> (III)  if appropriate in the presence of a diluent at temperatures between 0 DEG  and 150 DEG  C., whereby in the first process stage a condensation reaction takes place to give condensation products which still have open chains, and in the second process stage an elimination reaction with ring closure takes place to give the end product of formula (I).
Patent DE-3265392-D1 (DE)
Title: Process for the manufacturing of a casting tube
Inventor: DAUSSAN JEAN-CHARLES
IPC: B22D11/10
Filed: 1982-05-14
Granted: 1985-09-19
Abstract: The casting tube is constituted by a mixture of refractory particles and fibers embedded in a binder which is not capable of withstanding the temperature attained when liquid metal flows within the tube. The refractory particles are sinterable in a tube zone which is directly exposed to the heat of the liquid metal. At least in a zone which is not directly exposed to the heat of the liquid metal, the casting tube also contains a refractory binder which is capable of withstanding the heat in this zone.
Patent DE-3272630-D1 (DE)
Title: Sextant
Inventor: VAN SANTEN ANDRIES
IPC: G01C1/08
Filed: 1982-12-09
Granted: 1986-09-18
Abstract: The invention relates to a sextant (1), comprising a frame (2) with a circular arc portion (3) and a measuring arm (8) pivotably mounted with one end in the centre of the circular arc portion, the other end of said measuring arm being movable along the circular arc portion, a monocular viewing means (13) mounted on the frame, and a first fixed mirror (15) disposed on the frame in alignment with the optical axis of the viewing means and cooperating with a second rotatable mirror (16), said second mirror being mounted at the end of the measuring arm, which lies in said centre, said second mirror extending radially, wherein said first mirror is adapted so that a directly entering image and an image entering through both said mirrors combine in the viewing means, wherein two filters means (27, 29) are provided, which can be placed in the respective beam path of both said images, said filter means being accommodated within said viewing means.
Patent DE-3280438-D1 (DE)
Title: Vitamin d glycoside.
Inventor: HOLICK SALLY ANN
IPC: C07H1/00
Filed: 1982-06-30
Granted: 1993-07-22
Abstract: Cpds. of formula (I) which are biologically active in maintaining Ca and P metabolism in animals are new. In (I) the broken bond is an opt. double bond; R2 is H, Me or Et, X is H or OR1; and R2 is H or straight- or branched chain glycoside residue contg. 1-20 glycosidic units per residue. Provided that at least 1 R1 is other than H. Cpds. (I) are synthetic water-soluble forms of vitamins D3 and D2 and hydroxylated metabolites, and they are hypocalcaemically active and they maintain Ca and P homeostasis. Unexpectedly (I) may promote Ca absorption through the intestine without mobilisation of bone Ca, and so serum Ca levels may be increased by stimulation of intestinal Ca transport. Dose is 0.1 microgram -1 mg/kg.
Patent DE-3362816-D1 (DE)
Title: Method of making thin slabs moulded with a network reinforcement, and plant for carrying it out
Inventor: GUERIN GABRIEL
IPC: B28B23/00
Filed: 1983-11-24
Granted: 1986-05-07
Abstract: 1. A method of making thin slabs moulded with a network reinforcement (3), said reinforcement being formed by a plane network of long-limbed elements, of high mechanical strength and of a density substantially equal or smaller than that of the material constituent of the plate (1), the reinforcement (3) being placed on the moulded plate with the material of said plate still in the plastic state, and driven into it, characterized in that the reinforcement network (3) is driven in by a presser (16) forming a plane network of spaced apart ridges (17, 18).
Patent DE-3365876-D1 (DE)
Title: Bait for the control of flies
Inventor: ELBERT ALFRED DR
IPC: A01N53/08
Filed: 1983-09-16
Granted: 1986-10-09
Abstract: An insecticidal bait comprising an insecticidally effective amount of (a)  alpha -cyano-3-phenoxy-4-fluorobenzyl 2,2-dimethyl-3-( beta , beta -dichlorovinyl)-cyclopropanecarboxylate of the formula   <IMAGE> and (b) an insect attracting amount of at least one ingestion attractant. It may also contain additional insecticides, a grinding auxiliary, carrier, adhesive or swelling agent. Surprisingly the principal active ingredient does not repel insects, as do other pyrethroid-like insecticides in baits.
Patent DE-3373993-D1 (DE)
Title: Bottle with dosing device
Inventor: STEIGERWALD FRANZ
IPC: B65D47/34
Filed: 1983-02-02
Granted: 1987-11-12
Abstract: A dosaging device for dispensing defined amounts of a liquid being contained in a bottle with a squeezable wall. A valve is disposed between the content of the bottle and the dosaging container which can be selectively opened or closed by turning a gripping piece. The openings for feeding the bottle content into the dosage container are arranged in a specific manner with respect to the pouring orifice. An oblique trough which encompasses the pouring orifice reduces the still remaining liquid in the area of the pouring orifice back into the dosaging container, after the pouring. Baffle ribs are mounted on the inner side of the lid which covers the dosage container to the outside and which contains the pouring orifice in such a manner that they limit the liquid film formed by the impact of the liquid streams on the inside of the lid in direction of the opening provided for pouring.
Patent DE-3461131-D1 (DE)
Title: Electrical plug connector and receptacle therefor
Inventor: HALL LAWRENCE ALTON
IPC: H01R13/658
Filed: 1984-01-16
Granted: 1986-12-04
Abstract: An electrical connector of the plug type is shown in Figure 1 and comprises a dielectric housing member (14) having terminal passageways (22) therein in which electrical terminals (34) are latchably secured and have FORWARD contact sections (36), and also are electrically connected to a shielded cable (42). Metal clamshell members (16) and (18) are mounted on and surround housing member (14) extending forward to cover contact sections (36). A shield (46) of cable (42) surrounds a rear section of clamshell members (16) and (18) and is surrounded by a ferrule member (68) which is crimped to secure shield (46) to clamshell members (16) and (18) and to secure said clamshell members to housing (14), and is also crimped to to insulating jacket (48) of cable (42). An insulating sleeve (20) is disposed around clamshell members (16) and (18) and cable (42). A receptacle (12) has a dielectric housing (82) with a section (84) containing terminals (98), a channel (86) around section (84) to receive a front section of clamshell members (16) and (18) of plug connector (10), and a ground terminal (112) secured by a spring contact (116) in a recess (114) extending into channel (86) and having ground contact means (128) exterior of housing means (82), terminals (98) to electrically receive contact sections (36) and having contact sections (104) extending outwardly from housing (82).
Patent DE-3461598-D1 (DE)
Title: Improvements in flooded compressor separators
Inventor: CASH JOHN
IPC: B01D46/00
Filed: 1984-02-28
Granted: 1987-01-22
Abstract: A separator for a flooded liquid/gas compressor comprising a pressure vessel having an inlet for compressed liquid/gas mixture, a lower outlet for liquid and an upper outlet for clean gas, a filter element interposed between the liquid/gas mixture inlet and the clean gas outlet through which the gas flows to said outlet, and a shield member at least partially surrounding the filter element whereby liquid from the separator pressure vessel is prevented from contacting the filter element during periods of operation when the liquid volume in the pressure vessel may rapidly expand.
Patent DE-3464215-D1 (DE)
Title: Device for cutting an elongate paper roll
Inventor: BOELEN ADRIANUS JOHANNES MARIA
IPC: B26D3/16
Filed: 1984-01-12
Granted: 1987-07-23
Abstract: @ A device for cutting an elongate paper roll (9) into a plurality of small rolls comprising at least one cutting disc adapted to rotate about a rotary axis during operation whereby the device is provided with a plurality of cutting discs (1-8) rotatable about rotary axes being in fixed positions during operation and with means (15) for displacing the elongate paper roll with respect to the cutting discs in a direction at least substantially normal to the rotary axes of the cutting discs, whilst, viewed in the direction of displacement of the elongate paper roll, the cutting discs are relatively off-set in a manner such that an outermost portion of the paper roll is cut off at least forthe major part before the cutting disc cutting off the adjacent portion of the paper roll engages the elongate paper roll.
Patent DE-3471022-D1 (DE)
Title: Method and apparatus for cooling steel rod
Inventor: JALIL ASJED A
IPC: B21B45/02
Filed: 1984-10-02
Granted: 1988-06-16
Abstract: A method and apparatus for quenching steel rod in a high speed rolling mill is provided wherein a liquid coolant is preliminarily applied to the rod prior to its exiting from the mill finishing train in order to increase the column strength of the exiting rod by lowering the surface temperature thereof to less than about 950°C. Thereafter, as the rod progresses through additional liquid cooling devices on the way to the mill laying head, tractive forces are applied to the rod. The aforesaid increase in rod column strength acts in concert with the application of tractive force to ensure that the rod has sufficient rigidity and forward momentum to pass from the finishing train through the liquid cooling devices and to and through the laying head.
Patent DE-3472344-D1 (DE)
Title: Delay equalizer with continuously or stepwise adjustable delay characteristics
Inventor: PFITZENMAIER GERHARD DR ING
IPC: H04B3/14
Filed: 1984-12-12
Granted: 1988-07-28
Abstract: 1. A delay equaliser having a delay characteristic adjustable continuously or in steps, and n (n = 1, 2, 3...) delay check points, consisting of delay equaliser elementary circuits with negligible or finite but constant effective attenuation, characterised in that the circuit configuration and proportions of the lattice-type reactance (XK ) determining the delay are selected such that it exhibits a constant value and a constant differential quotient with respect to the frequency f at the frequencies of the check points (fF ) irrespective of setting, and in that the lattice-type reactance (XK ) determining the delay is split into a parallel circuit or a series circuit of a fixed reactance (XF (eta) ) with n reactance zero points or reactance poles which remains constant at all settings of the delay equaliser, and a control reactance (XS (eta) ) which comprises circuit elements with variable values for variation of the delay characteristic, the n reactance zero points or the n reactance poles of the fixed reactance lying at the n reference frequencies at which delay check points occur, and the absolute value of a delay check point (fF ) being determined by the first derivative of the fixed reactance (XF ) with respect to the frequency (f) at the actual reference frequency, irrespective of the control reactance (XS ).
Patent DE-3473463-D1 (DE)
Title: Improved process for treating thermoplastic polymers
Inventor: MARESCA LOUIS MICHAEL
IPC: C08G73/10
Filed: 1984-02-23
Granted: 1988-09-22
Abstract: Described is a process for improving the color of thermoplastic polymers by contacting the polymer with a peracid, hydrogen peroxide or other peroxygen compound.
Patent DE-3475981-D1 (DE)
Title: Method and apparatus for recording and replay of digital audio data
Inventor: LAGADEC ROGER DR
IPC: G11B20/22
Filed: 1984-07-23
Granted: 1989-02-09
Abstract: For both recording and replay, a digital audio tape (14) is accelerated very rapidly by a motor servo (9), motor (8) and capstan (7) so that the tape speed overshoots nominal speed range before settling back to this range in an oscillatory manner. The digital samples are recorded and replayed via a head (15), a random access memory (16) and input/output electronics (19). During recording, the store (17) is precharged by starting to write in as soon as acceleration is initiated. Read-out to the tape is initiated as soon as the tape first reaches the nominal speed range. Uniformity of samples as recorded on the tape is preserved by clocking a read address generator (21) at a rate proportional to tape speed, signaled by a tachometer (7). The write address generator is clocked at the constant sampling rate. For replay the write address generator is clocked at the tape speed rate while the read address generator (21) is clocked at the constant sample rate. Write in and read out are both initiated when the tape speed first reaches the nominal range. The addresses provided by the generators (20 and 21) are compared by a comparator (22) which provides a reference signal to the servo (9) in an arrangement such as to adjust the tape speed always in the sense to maintain a constant degree of filling of the store (17).
Patent DE-3476706-D1 (DE)
Title: Water based photopolymerisable compositions and their use
Inventor: DICKINSON PETER
IPC: C08G59/68
Filed: 1984-03-30
Granted: 1989-03-16
Abstract: Aqueous dispersions comprising water, a cationically curable compound, and a photosensitive onium salt, and preferably other ingredients such as sensitizers, fillers, and plasticizers, are useful for making printing screens, lithographic plates, and printed circuit resists. After exposure, the un-cured composition is easily removed by washing with water.
Patent DE-3477751-D1 (DE)
Title: Moulding method for hollow plastic articles, comprising an outer layer applied during the moulding process
Inventor: FAVREAU JEAN
IPC: B29C37/00
Filed: 1984-02-07
Granted: 1989-05-24
Abstract: A process is described of coating the interior wall of a mould heated at a temperature of 130 DEG  to 180 DEG  C. with a dry powder of an aminoplast or phenoplast resin, in particular melamine-formaldehyde, having a grain size distribution of 10 to 100 mu , whose particles gel in contact with the walls without running, then introducing into the mould a moulding composition comprising a thermosetting resin, mineral fillers and a catalyst, hardening and polymerizing by heat and pressure the contents of the mould and releasing the article whose coating is solidly anchored in the moulding composition. Sanitary ware articles of polyester-based substrate and melamine-formaldehyde-based coating, and refrigerator boxes consisting of polyurethane foam substrate and melamine-formaldehyde coating can be produced.
Patent DE-3482785-D1 (DE)
Inventor: OMORI TAKASHI C O PATENT DIVIS
IPC: G11B5/09
Filed: 1984-02-27
Granted: 1990-08-30
Abstract: In a system for recording and reproducing digital signals on a magnetic tape (12) using a rotary head (11 A, 11 B), in which the signals are recorded as a series of slanted tracks (14A, 14B) without guard bands between adjacent tracks (14A, 14B), a pilot signal that was recorded during the recording process is used to control the tracking of the playback head (11 A, 11 B). The pilot signal is recorded at a specific position in a specific pilot signal record region, independent from the region of the track (14A, 14B) at which the information signal is recorded, and the pilot signal is arranged at a predetermined position or positions being a specified distance from an end of each track (14A, 14B) in its longitudinal direction, and only alternate tracks receive the pilot signal. When the recorded tracks (14A, 14B) are reproduced by a rotary playback (11 A, 11 B) having a tracing width that is greater than the width of the track (14A, 14B), the pilot signals from the adjacent tracks (14A, 14B) will be detected and can be compared in level, with the comparison output being used to control the tracking of the rotary playback head (11 A, 11 B).
Patent DE-3568167-D1 (DE)
Title: Antitumour glycoproteins modified at their carbohydrate moieties, and process for obtaining them
Inventor: JANSEN FRANZ K
IPC: A61P35/00
Filed: 1985-06-18
Granted: 1989-03-16
Abstract: 1. Claims for the contracting States : BE, CH, DE, FR, GB, IT, LI, LU, NL, SE Antitumoral glycoprotein which inactives ribosomes, whose carbohydrate units are modified by oxidation with the periodate ion, said glycoprotein differing from the whole ricin. 1. Claims for contracting State : AT Process for the obtention of an antitumoral glycoprotein whose carbohydrate units are modified, said glycoprotein differing from the whole ricin, characterized in that it consists in submitting an unmodified antitumoral glycoprotein to an oxydation with periodate ions.
Patent DE-3571763-D1 (DE)
Title: Pressure modifying system
IPC: F16K17/02
Filed: 1985-02-06
Granted: 1989-08-31
Abstract: 57 A pressure modifying valve for anaesthetic gas scavenging systems for connection between a high vacuum source such as a hospital building service and the outlet from a patient or anaesthetic machine. The valve (100) comprises a housing (102, 104, 106) divided by a partition (108) into two chambers (110, 112) having inlet (114) and outlet (116) ports respectively. The partition (108) has a flow restricting orifice (118) controlled by a valve member (136) which is supported on a diaphragm (138) to be self adjusting In response to pressure in the chamber (112). On the patient side, the pressure in chamber (110) is controlled by pressure relief valves (120) which are similar and interchangeable. The valve is made inexpensively of plastics and is disposable before the plastics deteriorates or undesirable matter accumulates and affects the functioning of the valve.
Patent DE-3572524-D1 (DE)
Title: Load restraining pivot, especially for operation microscopes and suspension therefor
Inventor: TWISSELMANN LORENZ DR ING
IPC: B23Q1/54
Filed: 1985-04-23
Granted: 1989-09-28
Abstract: The load-locking joint, which is particularly suitable as a suspension mount for surgery microscopes, comprises a joint ball mounted in a housing and having a shaped-on hinge pin or rod, whose free mobility can be inhibited in its mount by mechanical clamping elements. The self-locking action is brought about in that the clamping elements engage on the spherical surface of the ball and during the rotation of the joint ball are carried along on said side, but are supported on a fixed abutment on the other side, the length between the point on the joint ball and the support point increasing with a slope, whose tangent is smaller than the friction coefficient.
Patent DE-3579540-D1 (DE)
Inventor: YOSHINAKA TADAAKI
IPC: H04N9/89
Filed: 1985-09-10
Granted: 1990-10-11
Abstract: Whenever component signals (color difference signals) of a video tape recorder signal are recorded in a recording medium in accordance with timeplex (time division multiplex) method, velocity error inevitably occurs because there always exists a difference in relative velocity between a tape head and tape between recording process and reproducing process. To perfectly eliminate the velocity errors included in the component signals when reading out the signals, a first read clock signal (RCKR) is generated to read a first component signal recorded in the first half of each horizontal period segment under consideration of integral velocity error as in the conventional method, but a second read clock signal (RCKB) is generated to read a second component signal recorded in the second half of each horizontal period segment under consideration of both initial offset velocity error and integral velocity error.