Patents by Inventor Leo Keller

Leo Keller 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: 10736782
    Abstract: A face protector for protecting a worker's eyes and face comprises an auto-darkening filter unit which in turn comprises a filter pane or ADF pane and an electronics unit driving the ADF pane, the electronics unit being configured to switch the ADF pane automatically from a transparent state to a darkened state. A hard shell unit comprises a shell carrying an ADF unit with the ADF and being shaped to protect a wearer's face, the shell being manufactured of a plastic material. A soft shell unit comprises a cap for protecting the crown of the wearer's head and a neck protector for protecting the wearer's neck, the soft shell unit being made of a combination of flexible fabric with support elements.
    Type: Grant
    Filed: July 31, 2014
    Date of Patent: August 11, 2020
    Assignee: OPTREL HOLDING AG
    Inventors: Ramon Hofer Kraner, Daniel Iranyi, Leo Keller, Arno Lenzi, Tom Staubli, Uwe Werner
  • Publication number: 20200230920
    Abstract: Adaptive laminated panel element for a vehicle window to reduce the effect of glare of a light source comprising a first panel and a second panel, a liquid crystal layer, and at least one connecting layer for connecting the first panel and the second panel with a spacing with respect to one another, wherein the liquid crystal layer is arranged between the first panel and the second panel or is applied to a surface of one of the first panel or the second panel, and wherein transparency of the adaptive laminated panel element is varied by controlling the liquid crystal layer via electrodes, and wherein the connecting layer is a birefringence-free adhesive layer and the laminated panel element is configured as safety glass for use as a vehicle window.
    Type: Application
    Filed: March 6, 2018
    Publication date: July 23, 2020
    Applicant: AM7VISION GMBH
    Inventors: Leo KELLER, Martin HAINFELLNER
  • Patent number: 10098788
    Abstract: The electro-optical glare protection filter includes a liquid crystal cell, which is a laterally extended liquid crystal cell defining a volume between two laterally extended sides. The volume containing liquid crystals and having, in a vertical direction perpendicular to lateral directions, a thickness being smaller than an extension of the volume in any lateral direction. The FFS cell includes a first electrode structure and a second electrode structure, which are arranged to change an orientation of the liquid crystals in the volume when a voltage is applied between them. Both the first and the second electrode structure are present at the same laterally extended side of the volume. The first electrode structure may include a plurality of electrically separate electrodes, and the second electrode structure may include a plurality of electrode lines.
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: October 16, 2018
    Assignee: Optrel Holding AG
    Inventors: Leo Keller, Martin Esposito
  • Publication number: 20170360612
    Abstract: The electro-optical glare protection filter comprises a liquid crystal cell which is a laterally extended liquid crystal cell defining a volume between two laterally extended sides, the volume containing liquid crystals and having, in a vertical direction perpendicular to lateral directions, a thickness being smaller than an extension of the volume in any lateral direction. The FFS cell comprises a first electrode structure and a second electrode structure, which are arranged to change an orientation of the liquid crystals in the volume when a voltage is applied between them, wherein both the first and the second electrode structure are present at the same laterally extended side of the volume. The first electrode structure may comprise a plurality of electrically separate electrodes and the second electrode structure may comprise a plurality of electrode lines.
    Type: Application
    Filed: December 21, 2015
    Publication date: December 21, 2017
    Inventors: Leo KELLER, Martin ESPOSITO
  • Patent number: 9610198
    Abstract: A welder protection device comprising a shell and a transparent front cover for protection of a wearer of the welder protection device, and an auto-darkening optical filter. The welder protection device further comprises a retracting mechanism arranged to move the optical filter optical filter from an active position to a retracted position and vice versa. In the active position, the optical filter lies inside the welder protection device and in the wearer's field of view, and in the retracted position the optical filter lies inside the welder protection device and outside the wearer's field of view.
    Type: Grant
    Filed: September 21, 2015
    Date of Patent: April 4, 2017
    Assignee: OPTREL AG
    Inventors: Ramon Hofer-Kraner, Leo Keller
  • Publication number: 20160081856
    Abstract: A welder protection device comprising a shell and a transparent front cover for protection of a wearer of the welder protection device, and an auto-darkening optical filter. The welder protection device further comprises a retracting mechanism arranged to move the optical filter optical filter from an active position to a retracted position and vice versa. In the active position the optical filter lies inside the welder protection device and in the wearer's field of view, and in the retracted position the optical filter lies inside the welder protection device and outside the wearer's field of view.
    Type: Application
    Filed: September 21, 2015
    Publication date: March 24, 2016
    Inventors: Ramon HOFER-KRANER, Leo KELLER
  • Patent number: 9268455
    Abstract: A system and method for user-controlled multi-dimensional navigation and/or subject-based aggregation of multimedia data, a multiplicity of node elements being generated and a node element including one or more search terms and/or weighting terms that can be logically combined. For each multimedia data element to be registered, a relevance index parameter is determined for each paired combination of node elements and allocated to the respective pair of node elements. In dependence on the relevance index parameters, one- or multi-dimensional distance factors are determined. Based on the registered multimedia data elements and/or node elements, a topological navigation map is generated and graphically displayed in dependence on the respective one- or multi-dimensional distance factors so that the user can navigate in the topological navigation map by an input device and can access required multimedia data elements and/or node elements.
    Type: Grant
    Filed: February 23, 2006
    Date of Patent: February 23, 2016
    Assignee: NETBREEZE GMBH
    Inventors: Leo Keller, Francois Rüf
  • Publication number: 20150033431
    Abstract: A face protector for protecting a worker's eyes and face comprises an auto-darkening filter unit which in turn comprises a filter pane or ADF pane and an electronics unit driving the ADF pane, the electronics unit being configured to switch the ADF pane automatically from a transparent state to a darkened state. A hard shell unit comprises a shell carrying an ADF unit with the ADF and being shaped to protect a wearer's face, the shell being manufactured of a plastic material. A soft shell unit comprises a cap for protecting the crown of the wearer's head and a neck protector for protecting the wearer's neck, the soft shell unit being made of a combination of flexible fabric with support elements.
    Type: Application
    Filed: July 31, 2014
    Publication date: February 5, 2015
    Inventors: Ramon Hofer Kraner, Daniel Iranyi, Leo Keller, Arno Lenzi, Tom Staubli, Uwe Werner
  • Publication number: 20150033430
    Abstract: A face protector for protecting a welder's eyes and face includes an auto-darkening welding filter (ADF) unit that, in turn, includes a filter pane or ADF pane and an electronics unit driving the ADF pane. The electronics unit is configured to switch the ADF pane automatically from a transparent state to a darkened state when a welding operation takes place. A hard shell unit includes a shell carrying the ADF unit with the ADF and being shaped to protect a wearer's face, the shell being made from a plastic material A soft shell unit includes a cap for protecting the crown of the wearer's head and a neck protector for protecting the wearer's neck. The soft shell unit is made of flexible fabric with support elements.
    Type: Application
    Filed: September 9, 2013
    Publication date: February 5, 2015
    Applicant: Optrel AG
    Inventors: Ramon Hofer Kraner, Daniel Iranyi, Leo Keller, Arno Lenzi, Tom Staubli, Uwe Werner
  • Publication number: 20140320771
    Abstract: A method for operating an auto-darkening welding filter for protecting a welder's eye in the course of a pulse mode welding process. During the pulse mode welding process at least a first time interval with strong light emission and a second time interval with reduced and/or negligible light emission are repeated with a repetition rate, and a point in time of a beginning of the first time interval is associated with a raising edge event. The method includes the step of darkening the auto-darkening welding filter to a first darkening level at a point in time of the raising edge event that is associated with a next first time interval.
    Type: Application
    Filed: April 29, 2014
    Publication date: October 30, 2014
    Applicant: Optrel AG
    Inventors: Leo Keller, Martin Schreiber, Tobias Tetzel
  • Publication number: 20090150832
    Abstract: A system and method for user-controlled multi-dimensional navigation and/or subject-based aggregation of multimedia data, a multiplicity of node elements being generated and a node element including one or more search terms and/or weighting terms that can be logically combined. For each multimedia data element to be registered, a relevance index parameter is determined for each paired combination of node elements and allocated to the respective pair of node elements. In dependence on the relevance index parameters, one- or multi-dimensional distance factors are determined. Based on the registered multimedia data elements and/or node elements, a topological navigation map is generated and graphically displayed in dependence on the respective one- or multi-dimensional distance factors so that the user can navigate in the topological navigation map by an input device and can access required multimedia data elements and/or node elements.
    Type: Application
    Filed: February 23, 2006
    Publication date: June 11, 2009
    Applicant: NetbreezeGmbH
    Inventors: Leo Keller, Francois Ruef
  • Publication number: 20080195602
    Abstract: System and method for aggregating and monitoring locally stored multimedia data, where a data store (32) is used to store at least one rating parameter (320, 321, 322) and at least one source database (401, 411, 421, 431) is associated with a search term (310, 311, 312, 313) and/or with a logical combination of search terms (310, 311, 312, 313). A filter module (30) in the arithmetic and logic unit (10) is used to access the source databases (401, 411, 421, 431) at the network nodes (40, 41, 42, 43), and a rating list (330, 331, 332) containing data records which have been found is produced for each rating parameter (320, 321, 322) in conjunction with the associated search terms (310, 311, 312, 313) and with the associated source databases (401, 411, 421, 431) and/or with a time rating for the documents.
    Type: Application
    Filed: May 10, 2005
    Publication date: August 14, 2008
    Applicant: NETBREEZE GmbH
    Inventors: Leo Keller, Francois Ruef
  • Publication number: 20070288447
    Abstract: System and method for the aggregation and monitoring of locally saved multimedia data, whereby an arithmetic and logic unit accesses network nodes linked with source data banks over a network. In a memory, at least one rating parameter and predetermined source data banks are allocated to one or several search terms. The source data banks are accessed via a filter, and for every rating parameter in connection with a logic combination of search terms and the allocated source data banks, a rating list with detected data records is generated. By means of a parameterization module, the fluctuating mood quantities for the respective rating parameter are at least partly dynamically generated, according to the time-based appearance of the detected data records in specific source data banks and/or categories and/or groups of data banks, whereby the fluctuating mood quantities correspond to the time-based mood fluctuations of users of the networks.
    Type: Application
    Filed: December 9, 2004
    Publication date: December 13, 2007
    Applicant: Swiss Reinsurance Comany
    Inventors: Daniel Andris, Leo Keller, Francois Ruef
  • Publication number: 20070255670
    Abstract: The invention relates to a system and method for the automated generation of complex control and/or analysis devices, whereby a task-specific organizational profile based on at least task condition data and/or object condition data and/or transfer condition data is generated. A first processing unit having at least one data aggregation module is generated. A second processing unit having at least one data analysis module is generated. A third processing unit having at least one data representation module is generated. Data channels generated by means of at least one work flow are connected to the at least one data aggregation module and/or data analysis module and/or data representation module. A data flow is defined by means of data channels between the modules in accordance with the task-specific organizational profile.
    Type: Application
    Filed: May 18, 2004
    Publication date: November 1, 2007
    Applicant: NETBREEZE GMBH
    Inventors: Francois Ruf, Leo Keller, Ales Prochazka
  • Patent number: 6675800
    Abstract: An emergency flight safety device for flight crew members (3) of an aircraft in an emergency situation. The device includes a full-face mask (1) and a display (31) that is integrated into the full face mask (1). The display shows flight data and ensures that the crew (3) has access to essential information even in the case when smoke otherwise largely blurs the view in the aircraft cabin. The emergency flight safety device also includes an oxygen and air supply apparatus (14-18) for supplying oxygen and air to the interior of the mask (1). The oxygen and air supply apparatus (14-18) includes a purification device to purify polluted cabin air in order to prevent the crew members (3) from being intoxicated by poisonous smoke.
    Type: Grant
    Filed: January 31, 2001
    Date of Patent: January 13, 2004
    Assignee: Optrel AG
    Inventor: Leo Keller
  • Patent number: 6270223
    Abstract: An active electro-optical filtering device, such as a glare-protection device is disclosed. The device is equipped with a light-protection filter having at least one active optical filter element, an electronic device for controlling the active filter element, a light sensor working together with the electronic device, and an electrical current supply for the electronic device and the at least one active filter element. In order to improve the efficiency in production and employment, the light-protection filter is arranged in a filter component and the electronic device, the light sensor and the electric current supply are arranged in a physically separate control component, wherein the filter components can be releasably connected mechanically and electrically to form a total unit, and for this purpose, are equipped with mutually cooperating mechanical and electrical connecting elements.
    Type: Grant
    Filed: December 17, 1999
    Date of Patent: August 7, 2001
    Assignee: Optrel AG
    Inventors: Franco Del Bon, Phillip Syré, Leo Keller
  • Publication number: 20010010225
    Abstract: The emergency flight safety device for flight crew members (3) of an aircraft in an emergency situation comprises a full-face mask (1) and a display (31) which is integrated into the full face mask (1), displays flight data and ensures that the crew (3) has access to essential information even in the case when smoke largely blurs the view in the aircraft cabin. The emergency flight safety device further comprises an oxygen and air supply apparatus (14-18) for supplying oxygen and air to the interior of the mask (1). The oxygen and air supply apparatus (14-18) is equipped with means for the purification of polluted cabin air in order to prevent the crew member (3) from being intoxicated by poisonous smoke.
    Type: Application
    Filed: January 31, 2001
    Publication date: August 2, 2001
    Inventor: Leo Keller