Patents by Inventor David Gelbaum

David Gelbaum 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: 10329769
    Abstract: The present subject matter comprises a simple, passive skylight dome with relatively tall partially vertical sides comprising partially transparent material which diffuses the transmitted light, and a mostly opaque sun shade near the top of the relatively tall partially vertical sides. The partially vertical sides are able to better intercept sunlight from low sun elevation angles than conventional horizontal skylights. The mostly opaque sun shade is able to block sunlight from high sun elevation angles to prevent such sunlight from entering the building below the dome. By enhancing the collection of low-sun-elevation-angle light, the subject matter improves the daylight performance of the skylight early and late in the day, and all day in the winter months. By reducing the collection of high-sun-elevation-angle light, the subject matter reduces the solar heat gain near solar noon in the summer months, thereby reducing air conditioning loads and related costs.
    Type: Grant
    Filed: March 29, 2018
    Date of Patent: June 25, 2019
    Assignee: Entech Solar, Inc
    Inventor: David Gelbaum
  • Patent number: 10208909
    Abstract: The present subject matter is an improved skylight to improved low sun-angle light collection and reduced high sun angle light and heat collection. A steeply sloping dome contains parabolic reflectors that redirect low elevation light into a light passage. The steeply sloping sides and the reflectors reflect high elevation angle rays away from a light passage.
    Type: Grant
    Filed: June 8, 2018
    Date of Patent: February 19, 2019
    Assignee: Entech Solar, Inc
    Inventor: David Gelbaum
  • Publication number: 20180363871
    Abstract: The present subject matter is an improved skylight to improved low sun-angle light collection and reduced high sun angle light and heat collection. A steeply sloping dome contains parabolic reflectors that redirect low elevation light into a light passage. The steeply sloping sides and the reflectors reflect high elevation angle rays away from a light passage.
    Type: Application
    Filed: June 8, 2018
    Publication date: December 20, 2018
    Applicant: Entech Solar, Inc
    Inventor: David Gelbaum
  • Patent number: 10125938
    Abstract: The present subject matter is an improved skylight employing four key elements to achieve its twin objectives of improved low sun-angle light collection and reduced high sun angle light and heat collection: (1) a transparent truncated pyramid-shaped dome, (2) two horizon-facing parabolic reflectors, (3) a collimating curb, and (4) a dual-pane diffuser assembly.
    Type: Grant
    Filed: February 24, 2017
    Date of Patent: November 13, 2018
    Assignee: Entech Solar Inc.
    Inventor: David Gelbaum
  • Publication number: 20180238056
    Abstract: The present subject matter comprises a simple, passive skylight dome with relatively tall partially vertical sides comprising partially transparent material which diffuses the transmitted light, and a mostly opaque sun shade near the top of the relatively tall partially vertical sides. The partially vertical sides are able to better intercept sunlight from low sun elevation angles than conventional horizontal skylights. The mostly opaque sun shade is able to block sunlight from high sun elevation angles to prevent such sunlight from entering the building below the dome. By enhancing the collection of low-sun-elevation-angle light, the subject matter improves the daylight performance of the skylight early and late in the day, and all day in the winter months. By reducing the collection of high-sun-elevation-angle light, the subject matter reduces the solar heat gain near solar noon in the summer months, thereby reducing air conditioning loads and related costs.
    Type: Application
    Filed: March 29, 2018
    Publication date: August 23, 2018
    Applicant: Entech Solar, Inc
    Inventor: David Gelbaum
  • Publication number: 20180216346
    Abstract: The present disclosed subject matter is a curved reflective skylight curb insert which intercepts and reflects low sun elevation angle sunlight, thereby minimizing glare and providing more uniform illumination within the building below.
    Type: Application
    Filed: January 30, 2018
    Publication date: August 2, 2018
    Inventor: David Gelbaum
  • Patent number: 9976308
    Abstract: The present subject matter comprises a simple, passive skylight dome with relatively tall partially vertical sides comprising partially transparent material which diffuses the transmitted light, and a mostly opaque sun shade near the top of the relatively tall partially vertical sides. The partially vertical sides are able to better intercept sunlight from low sun elevation angles than conventional horizontal skylights. The mostly opaque sun shade is able to block sunlight from high sun elevation angles to prevent such sunlight from entering the building below the dome. By enhancing the collection of low-sun-elevation-angle light, the subject matter improves the daylight performance of the skylight early and late in the day, and all day in the winter months. By reducing the collection of high-sun-elevation-angle light, the subject matter reduces the solar heat gain near solar noon in the summer months, thereby reducing air conditioning loads and related costs.
    Type: Grant
    Filed: June 2, 2017
    Date of Patent: May 22, 2018
    Assignee: Entech Solar Inc
    Inventor: David Gelbaum
  • Publication number: 20180135304
    Abstract: The present subject matter comprises a simple, passive skylight dome with relatively tall partially vertical sides comprising partially transparent material which diffuses the transmitted light, and a mostly opaque sun shade near the top of the relatively tall partially vertical sides. The partially vertical sides are able to better intercept sunlight from low sun elevation angles than conventional horizontal skylights. The mostly opaque sun shade is able to block sunlight from high sun elevation angles to prevent such sunlight from entering the building below the dome. By enhancing the collection of low-sun-elevation-angle light, the subject matter improves the daylight performance of the skylight early and late in the day, and all day in the winter months. By reducing the collection of high-sun-elevation-angle light, the subject matter reduces the solar heat gain near solar noon in the summer months, thereby reducing air conditioning loads and related costs.
    Type: Application
    Filed: November 14, 2017
    Publication date: May 17, 2018
    Inventor: David Gelbaum
  • Publication number: 20170356609
    Abstract: The present subject matter is an improved skylight employing four key elements to achieve its twin objectives of improved low sun-angle light collection and reduced high sun angle light and heat collection: (1) a transparent truncated pyramid-shaped dome, (2) two horizon-facing parabolic reflectors, (3) a collimating curb, and (4) a dual-pane diffuser assembly.
    Type: Application
    Filed: February 24, 2017
    Publication date: December 14, 2017
    Inventor: David Gelbaum
  • Patent number: 9416542
    Abstract: The present subject matter comprises a simple, passive skylight dome with relatively tall partially vertical sides comprising partially transparent material which diffuses the transmitted light, and a mostly opaque sun shade near the top of the relatively tall partially vertical sides. The partially vertical sides are able to better intercept sunlight from low sun elevation angles than conventional horizontal skylights. The mostly opaque sun shade is able to block sunlight from high sun elevation angles to prevent such sunlight from entering the building below the dome. By enhancing the collection of low-sun-elevation-angle light, the subject matter improves the daylight performance of the skylight early and late in the day, and all day in the winter months. By reducing the collection of high-sun-elevation-angle light, the subject matter reduces the solar heat gain near solar noon in the summer months, thereby reducing air conditioning loads and related costs.
    Type: Grant
    Filed: September 16, 2015
    Date of Patent: August 16, 2016
    Assignee: Entech Solar, Inc.
    Inventor: David Gelbaum
  • Publication number: 20160076252
    Abstract: The present subject matter comprises a simple, passive skylight dome with relatively tall partially vertical sides comprising partially transparent material which diffuses the transmitted light, and a mostly opaque sun shade near the top of the relatively tall partially vertical sides. The partially vertical sides are able to better intercept sunlight from low sun elevation angles than conventional horizontal skylights. The mostly opaque sun shade is able to block sunlight from high sun elevation angles to prevent such sunlight from entering the building below the dome. By enhancing the collection of low-sun-elevation-angle light, the subject matter improves the daylight performance of the skylight early and late in the day, and all day in the winter months. By reducing the collection of high-sun-elevation-angle light, the subject matter reduces the solar heat gain near solar noon in the summer months, thereby reducing air conditioning loads and related costs.
    Type: Application
    Filed: September 16, 2015
    Publication date: March 17, 2016
    Applicant: Entech Solar, Inc
    Inventor: David Gelbaum
  • Patent number: 9169647
    Abstract: A skylight system uses multiple stationary tilted reflectors aimed in different compass directions, including inverted pyramidal or wedge geometry to enhance the light output of a skylight using a conventional horizontal penetration into the building. The reflectors are made of very low cost metallized polymer film, and configured to maximize the useful lumen output of the skylight over the whole day and over the whole year. The skylight system furthermore improves the light distribution under the horizontal penetration by directing more light vertically into the working space beneath the roof penetration rather than horizontally onto walls and into the building occupants' eyes, creating glare and discomfort.
    Type: Grant
    Filed: September 26, 2013
    Date of Patent: October 27, 2015
    Assignee: Entech Solar, Inc.
    Inventor: David Gelbaum
  • Patent number: 9115495
    Abstract: The disclosed subject matter is a reflector assembly for a skylight curb and the method of installing same through a safety grid from the roof. The purpose of the disclosed subject matter is to improve the optical performance of skylight curbs. The reflector assembly is manufacture from metallized polymer film, trimmed to match the desired interior curb surface where it will be mounted, and equipped with attachment devices to facilitate installation. The reflector assembly is configured by folding or rolling into a compact shape, passing it through an opening in the safety grid, unfolding it, and securing it in its proper position using the integrated attachment devices.
    Type: Grant
    Filed: August 15, 2014
    Date of Patent: August 25, 2015
    Assignee: Entech Solar, Inc.
    Inventors: David Gelbaum, Robert Walters, Don Spears
  • Patent number: 9027292
    Abstract: A passive collimating skylight system includes an energy-receiving aperture defining a first plane and an energy-delivering aperture defining a second plane that is spaced apart from and non-parallel to the first plane. An energy-directing passageway extends between the energy-receiving aperture and the energy-delivering aperture to redirect radiant energy incident on the energy-collecting aperture over a range of incidence angles to the energy-delivering aperture so that the redirected radiant energy emerges from the energy-delivering aperture over a range of emergence angles that is smaller than the range of incidence angles. The passageway is defined by a wall having a first end that defines the energy-delivering aperture and a second end that defines the energy-collecting aperture, the wall tapering inwardly and having a reflective inner surface along substantially the entire length from the first end to the second end.
    Type: Grant
    Filed: October 22, 2013
    Date of Patent: May 12, 2015
    Assignee: Entech Solar, Inc.
    Inventors: Mark J. O'Neill, David Gelbaum, Almus J. McDanal, III, Don H. Spears
  • Publication number: 20150047274
    Abstract: The disclosed subject matter is a reflector assembly for a skylight curb and the method of installing same through a safety grid from the roof. The purpose of the disclosed subject matter is to improve the optical performance of skylight curbs. The reflector assembly is manufacture from metallized polymer film, trimmed to match the desired interior curb surface where it will be mounted, and equipped with attachment devices to facilitate installation. The reflector assembly is configured by folding or rolling into a compact shape, passing it through an opening in the safety grid, unfolding it, and securing it in its proper position using the integrated attachment devices.
    Type: Application
    Filed: August 15, 2014
    Publication date: February 19, 2015
    Applicant: ENTECH SOLAR, INC.
    Inventors: David Gelbaum, Robert Walters, Don Spears
  • Publication number: 20140083029
    Abstract: A skylight system uses multiple stationary tilted reflectors aimed in different compass directions, including inverted pyramidal or wedge geometry to enhance the light output of a skylight using a conventional horizontal penetration into the building. The reflectors are made of very low cost metallized polymer film, and configured to maximize the useful lumen output of the skylight over the whole day and over the whole year. The skylight system furthermore improves the light distribution under the horizontal penetration by directing more light vertically into the working space beneath the roof penetration rather than horizontally onto walls and into the building occupants' eyes, creating glare and discomfort.
    Type: Application
    Filed: September 26, 2013
    Publication date: March 27, 2014
    Inventor: David Gelbaum
  • Publication number: 20140047784
    Abstract: A passive collimating skylight system includes an energy-receiving aperture defining a first plane and an energy-delivering aperture defining a second plane that is spaced apart from and non-parallel to the first plane. An energy-directing passageway extends between the energy-receiving aperture and the energy-delivering aperture to redirect radiant energy incident on the energy-collecting aperture over a range of incidence angles to the energy-delivering aperture so that the redirected radiant energy emerges from the energy-delivering aperture over a range of emergence angles that is smaller than the range of incidence angles. The passageway is defined by a wall having a first end that defines the energy-delivering aperture and a second end that defines the energy-collecting aperture, the wall tapering inwardly and having a reflective inner surface along substantially the entire length from the first end to the second end.
    Type: Application
    Filed: October 22, 2013
    Publication date: February 20, 2014
    Applicant: Entech Solar, Inc.
    Inventors: Mark J. O'Neill, David Gelbaum, Almus J. McDanal, III, Don H. Spears
  • Publication number: 20120272593
    Abstract: A passive collimating skylight system includes an energy-receiving aperture defining a first plane and an energy-delivering aperture defining a second plane that is spaced apart from and non-parallel to the first plane. An energy-directing passageway extends between the energy-receiving aperture and the energy-delivering aperture to redirect radiant energy incident on the energy-collecting aperture over a range of incidence angles to the energy-delivering aperture so that the redirected radiant energy emerges from the energy-delivering aperture over a range of emergence angles that is smaller than the range of incidence angles. The passageway is defined by a wall having a first end that defines the energy-delivering aperture and a second end that defines the energy-collecting aperture, the wall tapering inwardly and having a reflective inner surface along substantially the entire length from the first end to the second end.
    Type: Application
    Filed: April 29, 2011
    Publication date: November 1, 2012
    Inventors: Mark J. O'Neill, David Gelbaum, Almus J. McDanal, III, Don H. Spears