Patents by Inventor Tomasz Kowalewski

Tomasz Kowalewski 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: 11555521
    Abstract: A gearbox comprising a main unit comprising a first casing and a first hollow shaft, and a secondary unit comprising a second casing and a second hollow shaft, and a drive shaft comprising a first clutch portion and a second clutch portion, which engage the first and second hollow shafts in an angularly fixed and axially sliding manner. The gearbox further including an axial retaining device comprising an axial shoulder supported in a fixed potion by an axial end on one of the first or second hollow shafts, and an external radial projection arranged in an intermediate position, and an external radial projection arranged in an intermediate position along the drive shaft between the first and second clutch portions.
    Type: Grant
    Filed: October 20, 2020
    Date of Patent: January 17, 2023
    Assignee: GE AVIO S.R.L.
    Inventors: Tomasz Kowalewski, Ivan Borra, Gian Mario Bragallini, Vincenzo Giordano
  • Publication number: 20210071717
    Abstract: A gearbox comprising a main unit comprising a first casing and a first hollow shaft, and a secondary unit comprising a second casing and a second hollow shaft, and a drive shaft comprising a first clutch portion and a second clutch portion, which engage the first and second hollow shafts in an angularly fixed and axially sliding manner. The gearbox further including an axial retaining device comprising an axial shoulder supported in a fixed portion by an axial end on one of the first or second hollow shafts, and an external radial projection arranged in an intermediate position, and an external radial projection arranged in an intermediate position along the drive shaft between the first and second clutch portions.
    Type: Application
    Filed: October 20, 2020
    Publication date: March 11, 2021
    Inventors: Tomasz Kowalewski, Ivan Borra, Gian Mario Bragallini, Vincenzo Giordano
  • Patent number: 10837496
    Abstract: A gearbox has a main unit and a secondary unit provided with respective casings of respective gear transmissions and with respective hollow shafts connected by means of a drive shaft; the secondary unit transfers motion between two axes forming an angle of less than 180° and which can be removed after having released the drive shaft; the drive shaft is engaged in an angularly fixed and axially sliding manner to the hollow shafts and is axially locked, at least in one direction, by means of an axial retaining device, which is releasable; the axial retaining device is coupled to one of the hollow shafts, at an axial end which is facing towards the other of the hollow shafts; at least one opening may be formed between the two casings, so as to access such an axial end and release the axial retaining device.
    Type: Grant
    Filed: July 29, 2014
    Date of Patent: November 17, 2020
    Assignee: GE AVIO S.r.l.
    Inventors: Tomasz Kowalewski, Ivan Borra, Gian Mario Bragallini, Vincenzo Giordano
  • Publication number: 20170113934
    Abstract: Carbon-based nanomaterials comprising graphitic domains that are doped with heteroatoms are disclosed. Processes for the production the nanomaterials, methods of using the nanomaterials, and articles or devices comprising the nanomaterials are also disclosed.
    Type: Application
    Filed: June 24, 2016
    Publication date: April 27, 2017
    Inventors: Tomasz Kowalewski, Mingjiang Zhong, Eric Gottlieb, Maciej Kopec, Jacob Mohin, Krzysztof Matyjaszewski
  • Publication number: 20160169289
    Abstract: A gearbox (1) has a main unit (22) and a secondary unit (2) provided with respective casings (23,3) of respective gear transmissions and with respective hollow shafts (24,10) connected by means of a drive shaft (25); the secondary unit transfers motion between two axes forming an angle of less than 180° and which can be removed after having released the drive shaft (25); the drive shaft (25) is engaged in an angularly fixed and axially sliding manner to the hollow shafts and is axially locked, at least in one direction, by means of an axial retaining device (57), which is releasable; the axial retaining device (57) is coupled to one (24) of the hollow shafts, at an axial end (32) which is facing towards the other (10) of the hollow shafts; at least one opening may be formed between the two casings (23,3), so as to access such an axial end (32) and release the axial retaining device.
    Type: Application
    Filed: July 29, 2014
    Publication date: June 16, 2016
    Inventors: Tomasz KOWALEWSKI, Ivan BORRA, Gian Mario BRAGALLINI, Vincenzo GIORDANO
  • Publication number: 20120213986
    Abstract: The present disclosure describes a carbon electrode having a high specific capacitance and method for forming an electrode. The electrode includes a graphitic carbon material having porous nanographene structures with edge-on topology to a plurality of formed pores, dispersed in an amorphous carbon matrix. The graphitic carbon material is formed by pyrolysis of phase separated block copolymers.
    Type: Application
    Filed: August 17, 2010
    Publication date: August 23, 2012
    Applicant: CARNEGIE MELLON UNIVERSITY
    Inventors: Tomasz Kowalewski, Eun Kyung Kim, John P. McGann, Krzysztof Matyjaszewski
  • Patent number: 7056455
    Abstract: The present invention comprises a novel process for the preparation of carbon based structured materials with controlled topology, morphology and functionality. The nanostructured materials are prepared by controlled carbonization, or pyrolysis, of precursors comprising phase separated copolymers. The precursor materials are selected to phase separate and self organize in bulk, in solution, in the presence of phase selective solvents, at surfaces, interfaces or during fabrication, into articles, fibers or films exhibiting well-defined, self-organized morphology or precursors of well-defined, self-organized, bi- or tri-phasic morphology. Compositional control over the (co)polymers provides control over the structure of the phase separated precursor whose organization therein dictates the nanostructure of the material obtained after carbonization or pyrolysis, wherein each dimension of the formed structure can be predetermined.
    Type: Grant
    Filed: April 6, 2002
    Date of Patent: June 6, 2006
    Assignee: Carnegie Mellon University
    Inventors: Krzysztof Matyjaszewski, Tomasz Kowalewski, David N. Lambeth, James Spanswick, Nicolay V. Tsarevsky
  • Publication number: 20030185741
    Abstract: The present invention comprises a novel process for the preparation of carbon based structured materials with controlled topology, morphology and functionality. The nanostructured materials are prepared by controlled carbonization, or pyrolysis, of precursors comprising phase separated copolymers. The precursor materials are selected to phase separate and self organize in bulk, in solution, in the presence of phase selective solvents, at surfaces, interfaces or during fabrication, into articles, fibers or films exhibiting well-defined, self-organized morphology or precursors of well-defined, self-organized, bi- or tri-phasic morphology. Compositional control over the (co)polymers provides control over the structure of the phase separated precursor whose organization therein dictates the nanostructure of the material obtained after carbonization or pyrolysis, wherein each dimension of the formed structure can be predetermined.
    Type: Application
    Filed: April 6, 2002
    Publication date: October 2, 2003
    Inventors: Krzysztof Matyjaszewski, Tomasz Kowalewski, David N. Lambeth, James Spanswick, Nicolay V. Tsarevsky