Patents by Inventor Helmut Braun
Helmut Braun has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20020060407Abstract: A device for generating an air stream in a duplicating machine, in particular in a printing machine, has at least one fan unit, which includes at least one ionic fan. Methods for guiding and depositing flat products, in particular print carriers, in duplicating machines are also provided. Further, a method for the zonal powdering of print carriers in duplicating machines is provided. A delivery configuration, in particular for printing machines, is also provided.Type: ApplicationFiled: August 9, 2001Publication date: May 23, 2002Inventors: Helmut Braun, Bernd Heller, Thomas Wolf
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Patent number: 5708077Abstract: Production of low-emission dispersion paints, coating materials and synthetic resin dispersion plasters in the form of aqueous preparations based on aqueous synthetic resin dispersion copolymers derived from olefinically unsaturated monomers, having a pigment volume concentration (PVC) of at least 60% and containing water, fillers, pigments, synthetic resin dispersion copolymers and conventional auxiliaries, wherein the synthetic resin dispersion copolymers have a content of 0.05 to 2% by weight of monomer units derived from special unsaturated hydrolyzable organic silicon compounds and the aqueous copolymer dispersions possess a minimum film-forming temperature (MFT) of <10.degree. C. preferably <5.degree. C.and especially <2.degree. C., the aqueous preparations according to the invention contain <0.1% by weight of volatile non-aqueous constituents, based on the total non-volatile part of the preparations, and the pH of the aqueous preparations is in the range from 5.5 to 10.Type: GrantFiled: November 15, 1996Date of Patent: January 13, 1998Assignee: Hoechst AGInventors: Ernst Nolken, Helmut Braun, Michael Lonitz
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Patent number: 5576384Abstract: Production of low-emission dispersion paints, coating materials and synthetic resin dispersion plasters in the form of aqueous preparations based on aqueous synthetic resin dispersion copolymers derived from olefinically unsaturated monomers, having a pigment volume concentration (PVC) of at least 60% and containing water, fillers, pigments, synthetic resin dispersion copolymers and conventional auxiliaries, wherein the synthetic resin dispersion copolymers have a content of 0.05 to 2% by weight of monomer units derived from special unsaturated hydrolyzable organic silicon compounds and the aqueous copolymer dispersions possess a minimum film-forming temperature (MFT) of <10.degree. C., preferably <5.degree. C. and especially <2.degree. C., the aqueous preparations according to the invention contain <0.1% by weight of volatile non-aqueous constituents, based on the total non-volatile part of the preparations, and the pH of the aqueous preparations is in the range from 5.5 to 10.Type: GrantFiled: May 23, 1995Date of Patent: November 19, 1996Assignee: Hoechst AGInventors: Ernst N olken, Helmut Braun, Michael Lonitz
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Patent number: 5393266Abstract: A sheave which can be used to transmit motion to belts or chains or as an inertial damper has an input element which can be driven by the output shaft of an internal combustion engine in a motor vehicle, an output element which is rotatable relative to the input element and can drive one or more belts or chains to transmit motion to one or more fans, pumps and/or other aggregates in a motor vehicle, and a damping unit which is installed between the input and output elements in an annular chamber defined by a housing which forms part of the input element and/or the output element. The damping unit employs long arcuate coil springs which alternate with the arms of a flange forming part of the input element or of the output element, and with pockets provided on the housing and forming part of the output element or of the input element. One or more antifriction bearings are installed between the input and output elements.Type: GrantFiled: August 4, 1992Date of Patent: February 28, 1995Assignee: Luk Lamellen und Kupplungsbau GmbHInventors: Helmut Braun, Dietmar Strauss, Peter Klein, Stefan Valtwies
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Patent number: 5049383Abstract: Use of fine-particled biocidal aqueous cationic dispersions of polymers as biocidal treatment agents for substrates at risk from microbes, preferably for fungicidal, bactericidal and/or algicidal treatments. The dispersions of polymers used are biocidal cationic dispersions of polymers which can be obtained from suitable monomers by emulsion polymerization and which contain biocidal cationically surfactant quaternary organic ammonium compounds, preferably tetra-substituted ammonium compounds of the formula (I) and/or alkyl- or alkenylpyridinium compounds of the formula (II), in particular in an amount of 0.1 to 20% by weight, based on the disperse polymer. The average particle diameter of the polymer particles in the biocidal cationic dispersions of polymers is preferably 0.02 to 0.5 .mu.m at a cationic activity of 1.5 to 600 .mu.mol per g of solid, measured at pH 7, and the solids content of the dispersions is preferably 3 to 40% by weight.Type: GrantFiled: December 29, 1989Date of Patent: September 17, 1991Assignee: Hoechst AGInventors: Hans-Ullrich Huth, Helmut Braun, Franz Konig
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Patent number: 4597485Abstract: A friction clutch wherein the diaphragm spring has two sets of inwardly extending prongs which are axially spread apart by the marginal portion of an axially movable release plate serving to disengage the clutch by pivoting the diaphragm spring relative to a plate-like carrier on the crankshaft of the engine in a motor vehicle to thereby relax the bias upon a pressure plate which normally presses a clutch disc against a counterpressure plate connected to the carrier. The coupling between the marginal portion of the release plate and one set of the prongs is a bayonet lock type connection which can be disengaged by turning the release plate relative to the diaphragm spring against the opposition of male and female detent members to thereby move each prong of the one set into register with a discrete opening in the marginal portion of the release plate.Type: GrantFiled: August 6, 1984Date of Patent: July 1, 1986Assignee: Luk Lamellen und Kupplungsbau GmbHInventor: Helmut Braun
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Patent number: 4596324Abstract: The clutch plate of a friction clutch in a motor vehicle has a first damping unit whose input element carries the friction linings and whose output element is a first hub having a radially outwardly extending first flange, and a second damping unit whose input element constitutes the input element of the first damping unit and whose output element has a second hub surrounding a portion of the first hub and having a second flange extending radially outwardly therefrom. The first damping unit has first coil springs in registering openings of the first flange and the input element, and the second damping unit has second coil springs in registering openings of the input element and second flange.Type: GrantFiled: October 19, 1983Date of Patent: June 24, 1986Assignee: Luk Lamellen und Kupplungsbau GmbHInventor: Helmut Braun
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Patent number: 4548309Abstract: A clutch plate wherein a hub is rotatable within limits and is movable radially within limits relative to two coaxial discs one of which carries the friction linings. Rotation of the hub and discs relative to each other is opposed by one or more coil springs as well as by a friction generating assembly having a first component which is rotatable with the hub and has a first conical surface, and a second component rotatable with the discs and having a second conical surface which is complementary to or exactly congruent with the first conical surface. A diaphragm spring urges the conical surface of one of the components axially toward or directly against the conical surface of other component whereby the two conical surfaces automatically center the discs relative to the hub.Type: GrantFiled: February 10, 1984Date of Patent: October 22, 1985Assignee: Luk Lamellen und Kupplungsbau GmbHInventor: Helmut Braun
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Patent number: 4421889Abstract: Dispersion paints with high wet adhesion are obtained if, as the binder thereof, an aqueous plastics dispersion is used, the polymer content of which includes monomeric units of an acetoacetic acid ester of an unsaturated alcohol, especially vinyl or allyl alcohol or a diester of a dihydroxy compound in which one acyl radical is acetoacetyl and the other acyl radical is an acrylic or methacrylic radical. The preparation of paints with a low pigment content is especially facilitated by the use of such a dispersion.Type: GrantFiled: May 13, 1983Date of Patent: December 20, 1983Assignee: Hoechst AktiengesellschaftInventors: Helmut Braun, Helmut Rinno, Werner Stelzel
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Patent number: 4418207Abstract: Unsaturated acetoacetic acid esters are suitable as comonomers in the polymerization of unsaturated compounds in an aqueous medium. Particularly suitable are acetylacetoxyalkyl-allyl ethers which may be synthesized in an easy manner and correspond to the formulae ##STR1## Said allyl ether derivatives are especially prepared by reacting an allyl alcohol with an epoxide and reacting the resulting hydroxyalkyl-allyl ether with diketene. Both reaction steps are carried out at a temperature of from 0.degree. to 100.degree. C., preferably in the presence of a catalyst. The allyl ether derivatives may be copolymerized especially with vinyl compounds, such as vinyl esters, acrylic acid esters, olefins, vinyl halides and vinyl aromatic hydrocarbons.Type: GrantFiled: July 9, 1980Date of Patent: November 29, 1983Assignee: Hoechst AktiengesellschaftInventors: Helmut Braun, Helmut Rinno, Karl J. Rauterkus
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Patent number: 4296226Abstract: Vinyl polymers with acetylacetoxy groups form the basis of polymer dispersions which are used as binding agent dispersions in paints, particularly suitable vinyl polymers are obtained by polymerizing an acetylacetoxy compound together with a least one further olefinically unsaturated compound, while using as acetylacetoxy compound an allyl ether derivative of the formula ##STR1## The copolymerization is carried out in particular in emulsion at a temperature in the range of from -30.degree. to 200.degree. C. As comonomers there are used especially vinyl esters and (meth-)acrylic acid esters. The polymerization is commonly effected in the presence of a radical-forming initiator and optionally in the presence of emulsifiers and protective colloids.Type: GrantFiled: July 9, 1980Date of Patent: October 20, 1981Assignee: Hoechst AktiengesellschaftInventors: Helmut Braun, Helmut Rinno, Karl J. Rauterkus
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Patent number: 4146516Abstract: Thixotropic mixture consisting of(a) one or several aqueous plastics dispersions containing a copolymer of .alpha.,.beta.-unsaturated compounds,(b) a hydroxyl groups-containing protective colloid,(c) a heavy metal chelate and(d) optionally further usual additives for the preparation of coating compositions,Wherein the copolymer of the aqueous plastics dispersion contains acetoacetate groups in an amount of from 0.35 to 7% by weight, calculated on the total weight of the copolymer.Type: GrantFiled: May 5, 1977Date of Patent: March 27, 1979Assignee: Hoechst AktiengesellschaftInventors: Helmut Braun, Helmut Rinno, Werner Stelzel
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Patent number: 4140666Abstract: The wet adhesion of plastics dispersions and of paints made therewith is widely improved, if in the manufacture of the dispersions a nucleophilically substitutable .alpha.-.beta.-unsaturated halogen compound in an amount of 0.5 to 10% by weight calculated on the total amount of monomers is copolymerized, and the dispersion so obtained is reacted with ammonia at a temperature of at least 50.degree. C.Type: GrantFiled: April 19, 1977Date of Patent: February 20, 1979Assignee: Hoechst AktiengesellschaftInventors: Helmut Braun, Rolf Reinecke, Werner Stelzel
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Patent number: 4089829Abstract: The wet adhesion of plastics dispersions and of paints made therewith is widely improved, if in the manufacture of the dispersions a glycidyl ester of an olefinically unsaturated carboxylic acid in an amount of 0.5 to 10% by weight calculated on the total amount of monomers is copolymerized, and the dispersion so obtained is reacted with ammonia at a temperature of at least 50.degree. C.Type: GrantFiled: October 29, 1975Date of Patent: May 16, 1978Assignee: Hoechst AktiengesellschaftInventors: Helmut Braun, Helmut Rinno, Rolf Reinecke, Werner Stelzel, Wolfgang Winstel
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Patent number: 3933715Abstract: Preserved synthetic resin dispersions and products made therefrom are provided which contain N-substituted maleic imide derivatives as a preservative.Type: GrantFiled: February 12, 1973Date of Patent: January 20, 1976Assignee: Hoechst AktiengesellschaftInventors: Franz Botsch, Helmut Braun, Walter Fink, Friedrich Heller, Karl Heinz Wallhausser