Patents by Inventor Norbert Schenk

Norbert Schenk 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).

  • Patent number: 4932307
    Abstract: An ammunition belt feeding device for a machine cannon is driven by branched off gas via a gas piston cartridges are alternatively fed by two transport wheels from two sides into a loading chamber of the machine cannon. Two feed star sprocket wheels are operatively connected to two feed shafts rotatably mounted in a housing of the weapon and operatively engage the ammunition belts fed from two sides so as to alternatively feed from each ammunition belt into the loading chamber. A pair of locking pawls in the form of two-armed levers are pivotally mounted in the housing of the weapon and coact with the pair of sprocket wheels. In a first embodiment of the invention a coil spring for each locking pawl is operatively connected to one arm of the two-armed lever so as to urge to other arm towards the sprocket wheel. In both embodiments of invention a pinion wheel having a cam surface is also coaxially mounted on each feed shaft and its cam surface coacts with the other arm of the two-armed lever.
    Type: Grant
    Filed: May 4, 1982
    Date of Patent: June 12, 1990
    Inventors: Horst Menges, Norbert Schenk
  • Patent number: 4416185
    Abstract: An alternate ammunition belt feeder for selectively feeding one of two types of ammunition from two separate ammunition belts via two separate cartridge feeding stars into the linear breech pocket of an automatic fire arm, such as a machine cannon. Two cartridge feeders, which include the two cartridge feeding stars are adapted to coact with one piston-cylinder arrangement forming an energy converter which converts a portion of the pressurized gas which forms during firing into mechanical energy for driving the piston cylinder arrangement. The cartridge feeders are operatively mounted in a housing which is pivotally mounted in the weapon so that it can be swung from a first operative position via an intermediate inoperative position to a second operative position. Thereby the housing can be selectively positioned between the first and second operative positions and cartridges from a preselected feeders can be fired from the weapon by being positioned for entrainment by the breech block of the weapon.
    Type: Grant
    Filed: June 24, 1981
    Date of Patent: November 22, 1983
    Assignee: Rheinmetall GmbH
    Inventor: Norbert Schenk
  • Patent number: 4284576
    Abstract: In the preparation of anthraquinone by reacting a mixture containing naphthalene, phthalic anhydride and tetrahydroanthraquinone with oxygen at elevated temperature while simultaneously separating off at least part of the naphthalene, the improvement which comprises supplying the naphthalene, phthalic anhydride and tetrahydroanthraquinone to a distillation system which consists of a column having a rectifying section, a stripping section and a boiler, at least one of the stripping section and the boiler being designed so that rapid through-passage of the feed mixture is prevented. Downcomers in the stripping section maintain liquid levels on the trays of about 5 to 500 mm and the boiler may have several successive chambers to provide the desired residence time in the system.
    Type: Grant
    Filed: September 22, 1978
    Date of Patent: August 18, 1981
    Assignee: Bayer Aktiengesellschaft
    Inventors: Norbert Schenk, Jorg Krekel, Paul Losacker, Wolfgang Swodenk
  • Patent number: 4220597
    Abstract: A process has been found for the preparation of anthraquinone by catalytic oxidation of naphthalene in the gas phase to provide a reaction product, obtained by quenching, cooling or quenching and cooling, containing naphthaquinone and phthalic anhydride, treating said reaction product directly with butadiene to provide tetrahydroanthraquinone, oxidation by means of molecular oxygen to the tetrahydroanthraquinone contained in this reaction product, to give anthraquinone, and separation of naphthalene, phthalic anhydride, anthraquinone and by-products by distillation, the gases produced in the quenching and/or cooling of the gases from the naphthalene oxidation and the gases from the oxidation of the tetrahydroanthraquinone to give anthraquinone being completely or partially recycled to the oxidation of naphthalene, in which a compound with an alkaline reaction is introduced between the reactor in which naphthalene is oxidized and the reactor in which the reaction with butadiene takes place, and/or into the gas
    Type: Grant
    Filed: January 25, 1979
    Date of Patent: September 2, 1980
    Assignee: Bayer Aktiengesellschaft
    Inventors: Kurt Halcourt, Paul Losacker, Manfred Martin, Norbert Schenk, Wulf Schwerdtel
  • Patent number: 4145353
    Abstract: A process for removing 1,4-naphthoquinone from phthalic anhydride has now been found, which is characterized in that phthalic anhydride containing 1,4-naphthoquinone, or mixtures containing phthalic anhydride and also containing 1,4-naphthoquinone, are subjected to a heat treatment at temperatures from 200 .degree. to 300.degree. C. in the presence of 1,4,4a,9a-tetrahydroanthraquinone.
    Type: Grant
    Filed: November 10, 1977
    Date of Patent: March 20, 1979
    Assignee: Bayer Aktiengesellschaft
    Inventors: Norbert Schenk, Paul Losacker, Manfred Martin
  • Patent number: 4048242
    Abstract: Producton of cyclopentene by splitting of dicyclopentadiene to produce cyclopentadiene and hydrogenating the cyclopentadiene to produce the cyclopentene in crude form, and distilling the crude cyclopentene to separate low boilers and high boilers therefrom and provide the cyclopentene product. The high boilers are recycled to the dicyclopentadiene splitting stage and serve to reduce resin formation in that stage. The process is particularly effective where the dicyclopentadiene has a low content of the so-called "codimers" which, if present in sufficient amount, would reduce resin formation.
    Type: Grant
    Filed: May 8, 1975
    Date of Patent: September 13, 1977
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hubert Lauer, Norbert Schenk, Wulf Schwerdtel
  • Patent number: 4036895
    Abstract: 2-Methylpropane-1,3-diol is prepared by reacting 2-methylenepropane-1,3-diol diacetate with a monohydric, lower aliphatic alcohol in the presence of a base. Thereafter the resulting 2-methylenepropane-1,3 diol is catalytically hydrogenated to form 2-methylpropane-1,3-diol.
    Type: Grant
    Filed: September 18, 1974
    Date of Patent: July 19, 1977
    Assignee: Bayer Aktiengesellschaft
    Inventors: Axel Vogel, Wolfgang Biedermann, Kurt Halcour, Norbert Schenk, Wulf Schwerdtel
  • Patent number: 4033987
    Abstract: To isolate naphthoquinone and phthalic anhydride from the gas obtained in the gas phase oxidation of naphthalene, the gas product at 250.degree. to 500.degree. C is first quenched with a counter-current liquid stream of naphthalene, naphthoquinone and phthalic anhydride. The liquid is raised to at most 200.degree. C, cooled and partly recycled, the coolant temperature being within 70.degree. C of the temperature of the liquid being cooled. The portion of the quench liquid which is not recycled is the product, viz. a solution of naphthoquinone and phthalic anhydride in naphthalene. The quenched gas is scrubbed with liquid naphthalene and most of the liquid product is cooled and re-cycled, the balance of the liquid product being passed to the quencher. The gas which leaves the scrubber is substantially free from naphthoquinone and phthalic anhydride. The initial gas may have been pre-cooled by evaporative cooling.
    Type: Grant
    Filed: July 16, 1976
    Date of Patent: July 5, 1977
    Assignee: Bayer Aktiengesellschaft
    Inventors: Joachim Priemer, Norbert Schenk, Jorg Krekel, Wulf Schwerdtel