baber/WOPTO huggingface dataset:
Patent CH-619685-A5 (CH)
Title: Process for the preparation of 3-fluoro-D-alanine or 2-deutero-3-fluoro-D-alanine
Inventor: REINHOLD DONALD FLOYD
IPC: C07C227/18
Filed: 1975-11-11
Abstract: 3-Fluoro-D-alanine or 2-deutero-3-fluoro-D-alanine are prepared. These compounds are obtained by reacting fluoropyruvic acid with an optically active D-amine with the formation of the corresponding N-substituted D-ketamine. The latter is treated with an alkali metal borohydride or alkali metal borodeuteride with reduction of the ketamine and formation of the corresponding N-substituted 3-fluoro-D-alanine or N-substituted 2-deutero-3-fluoro-D-alanine. The said N-substituted compound is then subjected to a hydrogenolysis of the N-substituents by reaction with hydrogen in the presence of a palladium hydroxide-on-carbon hydrogenation catalyst, 3-fluoro-D-alanine or 2-deutero-3-fluoro-D-alanine being obtained. The compounds obtained can be used as antibacterial agents.
Patent CH-604606-A5 (CH)
Title: Adjustable infrared lamp for hair treatment
Inventor: KUBAT HERBERT
IPC: A45D20/00
Filed: 1975-12-03
Abstract: Adjustable infrared lamp for hair treatment has several lamps fitted to support arm of stand in same vertical plane
Patent FR-2062079-A5 (FR)
Title: Compression of fluids by kinetic energy transfer
IPC: F04F5/18
Filed: 1969-10-09
Granted: 1971-06-25
Abstract: Motive liquid and work films are pumped via separate channels from a central reservoir. Motive fluid, pref. hot water, is fed to a plurality of nozzle jets debouching to a diffuser cone acting as a supply of high potential low kinetic energy liquid for a secondary nozzle section where work fluid is entrained to a diffuser section, the work fluid attaining the kinetic energy of the motive liquid. The mixture is separated in a collector reservoir, the work fluid having established a high pressure corresponding to its prior kinetic energy in the diffuser. Specif. used in sea water desalination processes and for concentration of solns. in the chemical and food industries.
Patent FR-2037552-A5 (FR)
Title: Precision shoulder bearing of light construc - tion
IPC: F16C33/30
Filed: 1970-03-03
Granted: 1970-12-31
Abstract: Bearing has an outer ring, inner ring, balls and ball cage. The outer and inner rings are of an Al-Cu-Mg-Ni forging alloy, which is hardened by heat and stretched after forging by 2 - 3%. The rings are shock-normalised after a granulating treatment. Pref. the ball material is synthetics based on acetal copolymers which are subjected to oil tempering at 100 degrees C.
Patent FR-2086826-A5 (FR)
Title: Liquid pesticide container - with polyolefin /polyester layers bound by a polyurethane film
IPC: B32B27/00
Filed: 1970-04-10
Granted: 1971-12-31
Abstract: Container is composed of a polyolefin pref. polyethylene and polyester pref. PET, layer closely bound together by a thin film of a polyurethane. Pref. polyurethane is the reacn. product of triphenylmethane triisocyanate and (i) adipic acid/diethylene glycol reacn. product or (ii) adipic and phthalic acids/butylene glycol and triol. The containers, proof against the solvents, are cheap and much lighter than conventional metal or glass containers.
Patent FR-2086944-A5 (FR)
Title: Conduit bending tool - for bending standard plastic conduit at ambient temps without internal springs
IPC: B29C53/08
Filed: 1970-04-14
Granted: 1971-12-31
Abstract: Tool has a fixed mandrel with channels slightly narrower, pref. by x 0.87 to 0.93, than standard conduit diameters and of suitable radii of curvature. A support on a pivoted lever can engage a mandrel channel to a limited depth and be pulled around to bend conduit clamped near the beginning of the channel. Lateral compression of the conduit in the undersize channel prevents kinking of the inside of the bend as the conduit is wrapped around the mandrel without needing to insert, position and remove conventional internal bending springs.
Patent FR-2088794-A5 (FR)
Title: Gas scrubbing unit - for removal of sulphur carbon and nitrogen oxides etc
IPC: C02F1/461
Filed: 1970-04-24
Granted: 1972-01-07
Abstract: Unit has a first column with a sealed vessel at its top into which gas is drawn by suction of a nozzle spraying liquid into a pipe below it, drawing gas/liquid mixture into lower part of column, where further mixing occurs as mixture impinges on an impeller immersed in liquid and driven by pressure of stream. A second column is connected to the first, and has a submerged pump recycling liquid to the spray nozzle of first column, whilst gas from first column is passed into second column which is open to atmosphere, through a submerged distributor. The liquid used is water containing suitable reagents or bacteria to degrade to toxic gases in the gas stream, and liquid sumps of columns are connected by a pipe.
Patent FR-2093373-A5 (FR)
Title: Permeable fluoropolymer membranes - steam treated to increase transmission of hydrogen or helium
IPC: B01D69/02
Filed: 1970-06-12
Granted: 1972-01-28
Abstract: Pretreatment of membranes of tetrafluoroethylene or fluorinated ethylene propylene copolymers or similar with steam for e.g. 24 hrs. for mfg. membranes for fractionation of petroleum hydrofining products or the concn. of H2 or He in fuel cells or gas phase chromatographs. Esp. suitable for membrane 100 mu thick.
Patent FR-2082969-A5 (FR)
Title: Polyesters with terminal hydroxyl groups - for polyurethanes
IPC: C08G18/42
Filed: 1970-11-06
Granted: 1971-12-10
Abstract: Polyurethanes with good mechanical properties made by reacting di- or polyisocyanates with a block polyester/polylactone/polyol of mol.wt. 300-20000 obtained by reacting a polyester/polyol or polycarbonate diols of formula A(OH)x with lactones of formula: (R1 is H or a 1-4C alkyl R2 and R3 are H or 1-4C alkyl 6-12C alicyclic, 1-4C alkoxy or 6-12 aryl residues) at 50-300 degrees C under N2, this being the only route to obtain these cpds. of formula: (where A is an x-valent residue obtained by removal of OH groups from polyesters (made by reaction of di- or polycarboxylic acids with an excess of di- or polyols) or a polycarbonate diol n is 2-6, m is 1-60 and x any number 2-6). Reaction rate of polyesters or carbonates with lactone are fast enough without catalyst.
Patent FR-2151435-A5 (FR)
Title: Dyeing emulsions - with a solubilised reactive dye in organic and aqs phases for cellulose fibres
IPC: D06P1/92
Filed: 1971-06-18
Granted: 1973-04-20
Abstract: Dyeing compositions contain an emulsion with a lipophilic phase containing reactive dyes with one or more acid groups salted with liposoluble organic bases, and an aqueous phase contg. the same dyes where proportion of aqueous phase/lipophilic phase is 3-10 wt.%. The cpd. n(Y)-A-(Y')n' where A is >=4C aliphatic, Y is H or OSO3X or SO2X, Y' is OSO3X or SO2X, X is H or alkali metal, n is a number and n' is 0 or a whole number, is added to the organic base in stoichiometric amount, and functions as an exhausting agent to reduce stability of the dyes in the organic phase. This gives more efficient use of dyes.
Patent FR-2148826-A5 (FR)
Title: Installation of underwater structures - sunk under control of cables payed out from floating buoys
IPC: E02D15/08
Filed: 1971-08-05
Granted: 1973-03-23
Abstract: An underwater structure, e.g. a submarine oil storage tank, is sunk into position by water ballasting a stabilising upper tank, a level attitude being maintained by controlling descent using peripheral cables payed out from e.g. 3 floating buoys, held in position by the lines to an anchored buoy. Cables pass from a steadily braked storage drum, over a capstan, rotation of which is controlled by e.g. a water-cooled electro-magnetic clutch, and a disc brake, which are under radio-control, in response to measured rate of payout. Supplementary braking may be provided by brake-shoes acting directly on cables.
Patent FR-2153806-A5 (FR)
Title: Imido-haleopimaric acid unsatd derivs - for use in copolymers with vinyl chloride, giving improved heat and shock res
IPC: C07D209/58
Filed: 1971-09-24
Granted: 1973-05-04
Abstract: Derivs. of imido-maleopimaric acid with unsatd. gps. on the acid and acid imide functions are made by reacting a deriv. of maleopimaric acid with an unsatd. gp. on the acid function, and of general formula: in which A is O or a group N-(CH2)n-CH=CH2, and n is 0-12, and a prim. amine of formula (H2N(CH2)n CH=CH2) in which n' is 1-6. The reaction is carried out at reflux, in an inert solvent, such as benzene, toluene or xylene, pref. with excess amine. Diallyl and allyl vinyl imido-maleopimarate are used as monomers in copolymers with vinylchloride which have improved heat and shock resistance over PVC.
Patent FR-2111356-A5 (FR)
Title: Photographic material - not requiring a chemical development
IPC: B21D43/05
Filed: 1971-10-14
Granted: 1972-06-02
Abstract: Photosensitive material comprises a transparent gas-impermeable support with an adherent layer contg. a gas impermeable binder and a photo-sensitive material able to generate a gas on exposure to light. The adhesion between the support and this layer or an intermediate film of photo-sensitive material is sufficiently low to permit the selective removal of the layer from the support in the exposed zones due to the gas generated by the exposed photo-sensitive material, while the unexposed regions of the layer remain adhered to the support.
Patent FR-2113226-A5 (FR)
Title: Cheese factory plant - for automatic handling of soft curd etc esp stacking for maturing and finishing
IPC: A01J25/11
Filed: 1971-10-19
Granted: 1972-06-23
Abstract: The cheese is dispensed from a battery of moulding tubes on to a support plate carrying a mounting frame and the filled frames stacked automatically with intermediate drainage grids before onward movement to e.g. the maturing rooms. The stacking is carried out by a time programmed automatic system in conjunction with height and quantity measuring instruments at the filling and stacking stations. Level with the support plate is a transfer plate to assist in the stacking operation and the surface of this plate, at least, is coated with a highly slippery material esp. PTFE, Additionally a spray for inert lubricating liquid esp. milk, is placed above the transfer plate. Reduced cycle time and hence higher throughput are achieved.
Patent FR-2159558-A5 (FR)
Title: Vinyl chloride polymn - using catalysts contg metal mercaptides giving high syndiotacticity
IPC: C08F4/28
Filed: 1971-11-03
Granted: 1973-06-22
Abstract: Polymsn. of ethylenic hydrocarbons, partic. vinyl chloride, is catalysed by a system contg. a hydroperoxide and/or an org. per acid., with SO2 or a substance liberating SO2, and in the presence of a metallic mercaptide in which the alkyl gp. has 1 - 14C, pref. 1 - 5C. The metal is pref. Na, K, Mg, Ca or Al. The proportion of mercaptide is pref. 0.5 - 5, partic. 0.5 - 3 moles/mole of SO2. The quantity of catalyst system used is 0.01 - 3%, pref. 0.05 - 0.5%, by wt. of the monomer. The reaction may be carried out in soln. in aliphatic alcohols of 1 - 7C, or aliphatic hydrocarbons of 5 - 12C, at -70 degrees and +100 degrees C, partic. -40 degrees to -10 degrees C, in the absence of O2. The process gives a high degree of conversion to a polymer with a syndiotacticity index >2.2, and with excellent thermal stability.
Patent FR-2125864-A5 (FR)
Title: Roof element - comprising curved plate of synthetic material
IPC: E04D13/03
Filed: 1972-01-26
Granted: 1972-09-29
Abstract: Roof element, e.g. for cable systems, comprises an arched plate of synthetic material, pref. acrylic glass which may be drawn, polycarbonate or cellulose ester, and a rim which is fixed to the straight edges at least and consists of an elastic sealing profile mounted on >=1 of the plate faces and damping bands mounted on both sides of the plate edge.
Patent FR-2181217-A5 (FR)
Title: Pipe centring and joining appts
IPC: B23K37/053
Filed: 1972-04-21
Granted: 1973-11-30
Abstract: Appts. for centring a pair of pipes which are to be joined together, having a carriage on which a column is provided for supporting a mechanism for joining the ends of such pipes, the carriage together with the column being reciprocatable while the column is mounted so that it is freely rotatable round its vertical axis and supports a free carrying element or girder one end of which is hinged to the column extending in the length direction of the element. The mechanism for joining the ends of the pair of pipes is installed on the free end of the free support guider by means of a further hinge which permits rotation of the mechanism round a further horizontal pivot shaft perpendicular to that of the free supporting guider. The mechanism has coaxially situated gripper elements adapted for holding the free ends of the pair of pipes to be joined in the desired posn.
Patent FR-2161683-A5 (FR)
Title: Aryloxy acetamido acetonitriles - plant growth regulants
IPC: A01N/
Filed: 1972-11-16
Granted: 1973-07-06
Abstract: Title cpds. are of formula (I): where X, Y and Z = H, halogen or lower alkyl, R and R1 = H or lower alkyl, R2, R3 and R4 = H, lower alkyl, alkenyl, alkynyl: aryl, substd. aryl or benzyl or R3 and R4 together with the C atom form a cycloalkane ring. The cpds. are useful as herbicides and to increase the carbohydrate content of crops such as sugar cane. They are prepd by the reaction of an aldehyde or ketone with HCN and an amine to give the aminoacetonitrile, followed by reaction with a phenoxyacetyl chloride.
Patent FR-2226090-A5 (FR)
Title: Guitar capotasto bridging all six strings - is open at one side to slide over guitar fret and clamps neck of guitar
IPC: G10D3/04
Filed: 1973-04-16
Granted: 1974-11-08
Abstract: The capotasto comprises a clamp with two parallel extending arms (12) which clamp around the neck of the guitar. The upper arm (1) which overlies the guitar fret to compress all six strings, comprises a semi-circular bar which is covered in rubber across its planar edge, which engages the fret. The bottom arm (2) is also a semi-circular bar with its planar edge covered by rubber or felt. The two arms (1, 2) are clamped around the guitar neck via a cylindrical spring forming a collet, forcing the arms together at one end, where they are pivoted together.
Patent FR-2197344-A5 (FR)
IPC: C09D11/10
Filed: 1973-08-21
Granted: 1974-03-22
Abstract: 1448555 Moulding plastisol inks BRITISH UNITED SHOE MACHINERY CO 21 Aug 1973 [22 Aug 1972 (2)] 39071/72 and 39072/72 Heading B5A [Also in Division C3] In a process for forming a raised design on a workpiece such as a shoe; wherein a plastisol ink is applied to a mould having the design formed by recesses in its surface, excess ink is removed from the lands between the recesses by a doctor blade, the workpiece is located against the mould, and the ink is transferred to the workpiece to form the raised design and is gelled by heating; the plastisol ink contains particles comprising a resin which melts to fuse with that of the plastisol, colouring matter, and a binding agent which prevents loss of pigment during doctoring so that the lands between the recesses of the mould are not smeared with colour. P.V.C. and pigment are added to a solution of cold setting epoxy resin which is ballmilled during evaporation of the solvent to form a coloured powder. After the epoxy resin has cured the powder is incorporated in an unpigmented P.V.C. plastisol containing a flowcontrol agent. A design of stitching &c. is applied to a shoe upper by a first mould in a R.F. heated press and at the same time projections are formed for locating the upper in a second mould in which the printed design is embossed.
Patent CH-697119-A5 (CH)
Inventor: SCHUEMPERLI RENE-CLAUDIUS
IPC: A61H23/02
Filed: 2006-10-19
Abstract: The apparatus has a hand piece with a tubular envelope (1) enclosing an electrical micro motor (9) that drives a reducer (10). An end fitting holder has a body (4) fixed in a distal end of the envelope, and a plunger (15) sliding in the body. A transformation mechanism connects an output shaft (11) of the reducer to the plunger and transforms rotational movement of the shaft into linear to-and-fro movement of the plunger. An end fitting (17) is removably fixed on a distal end of the plunger, and a head (26) forms an end of the fitting and is in contact with a person to be treated.
Patent DD-144502-A5 (DD)
Title: Pflanzenwachstumsregulator
Inventor: D AMICO JOHN J
IPC: A01N43/84
Filed: 1978-12-15
Abstract: Die Erfindung betrifft einen Pflanzsnwuchsregulator, insbesondere zur Regulierung des Wachstums von Hülsenfrüchten. Erfindungsgemäß enthält der Regulator eine wirksame Menge eines
Patent DD-149665-A5 (DD)
Title: Verfahren zur herstellung von o-halogenalkyl-2-halogenacetanilid-derivaten
Inventor: CHUPP JOHN P
Filed: 1980-03-25
Abstract: Die Erfindung betrifft Verfahren zur Herstellung von neuen o-Halogenalkyl-2-halogenacetanilid-Verbindungen. Das Ziel der Erfindung bestand darin, Verfahren zur Herstellung von brauchbaren Zwischenprodukten fuer die Herstellung von N-substituierten 2',6'-disubstituierten 2-Halogenacetanilid-Derivaten zu finden, die in selektiver Weise eine unerwuenschte Vegetation in landwirtschaftlichen Kulturen kontrollieren. Diese Aufgabe wurde durch das erfindungsgemaesze Verfahren in zufriedenstellender Weise geloest, bei welchem aus geeigneten Ausgangsverbindungen die gewuenschten o-Halogenalkyl-2-halogenacetanilid-Derivate durch Behandeln mit einem Halogenierungsmittel, wie molekularem Chlor, Brom oder N-Bromsuccinimid, unter gleichzeitiger Belichtung mit UV-Licht oder einer Lichtquelle fuer weiszes Licht synthetisiert und in ueblicher Weise gewonnen werden.
Patent DD-201844-A5 (DD)
Title: Pflanzenkonditionierendes mittel
Inventor: PAIS ISTVAN
IPC: A01N59/16
Filed: 1981-12-18
Abstract: Die Erfindung betrifft ein pflanzenkonditionierendes Mittel, mit dem den Pflanzen Titan zugefuehrt werden kann. Das Wesen der Erfindung besteht darin, dass es in einer Menge von 0,5 bis 15,0 Gew.-%,in waessriger Loesung, auf 1gAtom Titan bezogen,ein mit 14 bis 28 gMol Askorbinsaeure gebildetes, auf einen pH-Wert zwischen 5 und 7 eingestelltes Chelat und,auf das Titan bezogen, in einem Verhaeltnis von 1:0,1 bis 2 ein in biochemischer Hinsicht wirksames Naehrelement oder eine Kombination davon und/oder in einem Verhaeltnis von 1:0,001 bis 0,01 eine Substanz mit phytohormonaler Wirkung, und auf die Gesamtmenge der festen Komponenten bezogen, mindestens 0,01Gew.-% Sorbinsaeure oder Salze davon, oder Benzoesaeure oder Salze davon,oder p-Hydroxyoxy-benzoesaeure oder Salze davon, oder Propionsaeure oder Salze davon, oder Hexamethylentetramin oder ein Gemisch der obigen Verbindungen und gegebenenfalls Vernetzungsmittel, haftungsfoerdernde Mittel und/oder andere Hilfsstoffe enthaelt. DD#AP
Patent DD-205646-A5 (DD)
Title: Verfahren zur herstellung von photorelief-druckformen
Inventor: DUDZIAK HENDRYK
IPC: B41N1/06
Filed: 1982-12-06
Abstract: DIE VORRICHTUNG ZUR HERSTELLUNG VON PHOTORELIEF-DRUCKTORMEN, BESTEHEND AUS EINEM AUS ZWEI RAMEN: EINEM UNBEWEGLICHEN UND EINEM BEWEGLICHEN, ZUSAMMENGESETZTEN KOPIERRAHMEN, AUS ZWEI GRUPPEN AKTINISCHER LICHTQUELLEN ZUR BELICHTUNG DES KOPIERRAHMENS UND AUS EINEM MIT PHOTOPOLYMERISIERENDER KOMPOSITION GEFUELLTEN BEHAELTER, VERSEHEN MIT EINEM SYSTEM (4) ZUR EINSPEISUNG DES KOPIERRAHMENS (1) MIT DER PHOTOPOLYMERISIERENDEN KOMPOSITION VERSEHEN IST, WELCHES EINEN KREISLAUF ENTHAELT, DER EINEN TEIL DER GEFOERDERTEN KOMPOSITION ZUM BEHAELTER ZURUECKFUEHRT, SOWIE EIN VENTIL (24) ZUR REGELUNG DER AUSBREITUNGSVERHAELTNISSE DER KOMPOSITIONSSTRAHLEN, SOWIE EINEN KAPAZITIVEN GEBER (9), DER DEN FUELLSTAND DES KOPIERRAHMENS MIT DER KOMPOSITION ANZEIGT UND IN DEM UNBEWEGLICHEN RAHMEN (6) DES KOPIERRAHMENS (1), DER UNTER EINEM VON 0 GRAD UND 90 GRAD ABWEICHENDEN WINKEL ZU DER HORIZONTALEN EINE PLATTE (11) SICH BEFINDET, DIE DIE AKTINISCHE STRAHLUNG DURCHLAESST, WOBEI DER KOPIERRAHMEN (1) VERSCHIEBBAR ANGEORDNET IST, UM DESSEN VERLAGERUNG IN DIE EXPOSITIONSKAMMER ZU ERMOEGLICHEN.
Patent DD-209856-A5 (DD)
Title: Poroeses plattenfoermiges diaphragma
Inventor: CAIRNS JOHN F
IPC: C08J5/22
Filed: 1983-06-09
Abstract: Es wird ein Diaphragma aus einer poroesen Platte aus einem organischen Polymer, zum Beispiel Polytetrafluorethylen, beschrieben, die durch ihre gesamte Dicke der Platte ein Netzmittel enthaelt, wobei die Konzentration des Netzmittels in dem Teil der Platte, der sich in der Naehe der einen oder beider Oberflaechen befindet, groesser ist als die Konzentration des Netzmittels in dem Teil der Platte, der von den aeusseren Oberflaechen weiter entfernt ist. DD#AP
Patent DD-228393-A5 (DD)
Title: Oxidkathode
Inventor: ESDONK JOHANNES VAN
IPC: H01J1/26
Filed: 1984-12-19
Abstract: Die Erfindung betrifft eine Oxidkathode mit einer Basis, die im wesentlichen aus Titan besteht, und einem mit Aluminiumoxid bedeckten Heizelement zum Erwaermen dieser Basis, auf der eine Erdalkalimetalloxid enthaltende poroese Schicht angebracht ist. Ziel der Erfindung ist die Bereitstellung einer verbesserten Oxidkathode, mit der das Problem, dass eine chemische Unstabilitaet des Titans in Beruehrung mit Aluminiumoxid besteht, ueberwunden wird. Erfindungsgemaess ist die Titanbasis an ihrer dem Heizelement zugewandten Seite mit einer Schicht aus zumindest einem Metall oder einer Legierung von Metallen aus der Gruppe Platin, Molybdaen, Tantal und Wolfram bedeckt. Vorzugsweise besteht die Schicht aus reinem Wolfram und wird mit Hilfe des "chemical vapour deposition" (CVD)-Verfahrens angebracht. Die Schicht hat vorzugsweise eine Dicke von 1 bis 10 mm. Figur
Patent DD-273772-A5 (DD)
Inventor: LEHMANN KLAUS
IPC: A61K9/32
Filed: 1986-07-07
Abstract: 1. Aqueous dispersion of a coating composition for medicaments, comprising dispersed latex particles A) of a carboxyl group-containing polymer which is water-soluble at between pH 5 and 8, and B) a water-insoluble film-forming polymer of high extensibility, characterized in that the weight ratio of the total quantity of latex particles A and B is above 60 : 40 and below 95 : 5.
Patent DD-284215-A5 (DD)
Title: Verfahren zur herstellung von tonerde
Inventor: FISCHER-BARTELK CHRISTA
IPC: C01F7/30
Filed: 1988-04-28
Abstract: Die Erfindung betrifft ein Verfahren zur Herstellung von Tonerde durch thermische Zersetzung von verunreinigtem AlCl36 H2O-Kristallisat und wird zur Entfernung von Eisen angewendet. Erfindungsgemaesz wird im Vorlaufmaterial der Hochtemperaturzersetzung unter schwach reduzierenden Bedingungen ein Molverhaeltnis KCl:FeCl22 eingestellt. Es wurde gefunden, dasz sich vorlaufende Eisenchloride bei 1 200-1 350C als K2FeCl4 verfluechtigen, da der KCl-Zusatz die Bildung des sehr stabilen, nicht fluechtigen Spinells FeOAl2O3 verhindert.{Gewinnung von Tonerde; nichtbauxitische Rohstoffe; mineralsaurer Aufschlusz; Salzsaeure; thermische Zersetzung von AlCl36 H2O-Kristallisat; Verfluechtigung vorlaufender Eisenchloride}
Patent DD-282713-A5 (DD)
Title: Vorrichtung zur chemisch-thermischen behandlung von formteilen
Inventor: GEIL WERNER
IPC: C23C8/26
Filed: 1988-05-20
Abstract: Die Erfindung betrifft eine Vorrichtung zur chemisch-thermischen Behandlung von Formteilen aus Eisen, insbesondere zur Behandlung von Laeppkaefigen, die zum Laeppen von Halbleiterscheiben verwendet werden. Aufgabe der Erfindung ist es, eine Vorrichtung zu konstruieren, die die Reaktion des fuer die chemisch-thermische Behandlung erforderlichen Mediums mit der zu behandelnden Oberflaeche der Formteile ermoeglicht, ohne dasz Verspannungen der Formteile eintreten. Erfindungsgemaesz wird die Aufgabe dadurch geloest, dasz die verwendeten Druckplatten auf der den Formteilen zugewandten Seite Vertiefungen aufweisen, derart, dasz der Flaechenanteil der Vertiefungen geringer ist als der Anteil der von den Vertiefungen eingeschlossenen ebenen Flaechen.{chemisch-thermische Behandlung; Nitrieren; Eisenformteile; Nitriervorrichtung; Druckplatte}