Patents by Inventor Krassimir Fotev

Krassimir Fotev 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: 11946497
    Abstract: A novel mechanism for reducing boundary layer friction and inhibiting the effects of uncontrolled fluid turbulence and turbulent layer separation, thus reducing the body drag, kinetic energy losses and lowering engine and pump fuel consumption is proposed. It steps on the type of turbulence observed in the so-called in fluid dynamics “drag crisis”. Plurality of device shapes and plurality of devices producing the wanted pure form of even plurality of counter-rotating vortices extending into the flow, i.e. tubes, are presented and discussed in detail, contrasting with the prior art. Configurations of multiple devices for the purposes of drag and fuel reduction, including their simulations and experimental results are put forward. Additional embodiments of the resulting tubes disclose use on aircraft or vessel control surfaces as stall inhibitors, use in wind turbines as dynamic range extenders, as well as use in turbines in efficient cooling mechanisms.
    Type: Grant
    Filed: August 30, 2021
    Date of Patent: April 2, 2024
    Assignee: 13 MARI LTD.
    Inventors: Krassimir Fotev, Rumen Kishev, Grigor Plamenov Nikolov
  • Publication number: 20210388858
    Abstract: A novel mechanism for reducing boundary layer friction and inhibiting the effects of uncontrolled fluid turbulence and turbulent layer separation, thus reducing the body drag, kinetic energy losses and lowering engine and pump fuel consumption is proposed. It steps on the type of turbulence observed in the so-called in fluid dynamics “drag crisis”. Plurality of device shapes and plurality of devices producing the wanted pure form of even plurality of counter-rotating vortices extending into the flow, i.e. tubes, are presented and discussed in detail, contrasting with the prior art. Configurations of multiple devices for the purposes of drag and fuel reduction, including their simulations and experimental results are put forward. Additional embodiments of the resulting tubes disclose use on aircraft or vessel control surfaces as stall inhibitors, use in wind turbines as dynamic range extenders, as well as use in turbines in efficient cooling mechanisms.
    Type: Application
    Filed: August 30, 2021
    Publication date: December 16, 2021
    Inventors: Krassimir Fotev, Rumen Kishev, Grigor Plamenov Nikolov
  • Patent number: 8907953
    Abstract: A system and method are provided for unfolding large datasets with an on demand resolution in one or more points of interest on a non-linear fixed length graph axis. The system includes one or more integrable function families configured to provide one or more integrable functions. The system further comprises a client application configured to capture and/or evaluate data unfold resolution requirements, adjust the axis resolution in a point-by-point fashion while preserving the physical axis dimensions, render axis tickmarks, adjust the axis upon data point selection, and display the selection to the user.
    Type: Grant
    Filed: June 7, 2011
    Date of Patent: December 9, 2014
    Inventor: Krassimir Fotev
  • Patent number: 8713003
    Abstract: Embodiments of a system and method are provided for ranking the contents of one or more documents, applications, sound or visual media through human assistance. The system includes one or more search engines configured to provide one or more documents, applications, sound or visual media based on a search query sent by a user. Further, the system includes a client application configured to capture the query sent by the user and the keyword tags provided by the documents, applications, sound or visual media author. The client application monitors one or more interactions of the user with the one or more documents, applications, sound or visual media for one or more events and provides a relevance measure to the one or more documents, applications, sound or visual media based on the captured query or tags, and the one or more events.
    Type: Grant
    Filed: June 24, 2011
    Date of Patent: April 29, 2014
    Assignee: Peer Belt Inc.
    Inventor: Krassimir Fotev
  • Patent number: 8352464
    Abstract: Embodiments of system and method are provided for ranking contents of one or more documents through human assistance. The system includes one or more search engines configured to provide one or more documents based on a search query sent by a user. Further, the system includes a client application configured to capture the query sent by the user and the document tags provided by the document author or inbound links. The client application monitors one or more interactions of the user with the one or more documents for one or more events and provides a relevance measure to the one or more documents based on the captured query or tags, and the one or more events.
    Type: Grant
    Filed: June 9, 2010
    Date of Patent: January 8, 2013
    Assignee: Peer Belt Inc.
    Inventor: Krassimir Fotev
  • Publication number: 20110304626
    Abstract: A system and method are provided for unfolding large datasets with an on demand resolution in one or more points of interest on a non-linear fixed length graph axis. The system includes one or more integrable function families configured to provide one or more integrable functions. The system further comprises a client application configured to capture and/or evaluate data unfold resolution requirements, adjust the axis resolution in a point-by-point fashion while preserving the physical axis dimensions, render axis tickmarks, adjust the axis upon data point selection, and display the selection to the user.
    Type: Application
    Filed: June 7, 2011
    Publication date: December 15, 2011
    Inventor: Krassimir Fotev
  • Publication number: 20110276568
    Abstract: Embodiments of a system and method are provided for ranking the contents of one or more documents, applications, sound or visual media through human assistance. The system comprises one or more search engines configured to provide one or more documents, applications, sound or visual media based on a search query sent by a user. Further, the system comprises a client application configured to capture the query sent by the user and the keyword tags provided by the documents, applications, sound or visual media author. The client application monitors one or more interactions of the user with the one or more documents, applications, sound or visual media for one or more events and provides a relevance measure to the one or more documents, applications, sound or visual media based on the captured query or tags, and the one or more events.
    Type: Application
    Filed: June 24, 2011
    Publication date: November 10, 2011
    Inventor: Krassimir Fotev
  • Publication number: 20110022578
    Abstract: Embodiments of system and method are provided for ranking contents of one or more documents through human assistance. The system comprises one or more search engines configured to provide one or more documents based on a search query sent by a user. Further, the system comprises a client application configured to capture the query sent by the user and the document tags provided by the document author or inbound links. The client application monitors one or more interactions of the user with the one or more documents for one or more events and provides a relevance measure to the one or more documents based on the captured query or tags, and the one or more events.
    Type: Application
    Filed: June 9, 2010
    Publication date: January 27, 2011
    Inventor: Krassimir Fotev