Patents by Inventor Douglas J. Herst

Douglas J. Herst 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: 6709131
    Abstract: A luminaire has a brightness reduction cover element below and in proximity to the active light source of the luminaire to simulate a larger light source having a lower surface brightness which is exposed through the luminaire's down light opening. For example, where the luminaire has a high output T5 lamp, the brightness reduction cover element can be in the form of a substantially semi-cylindrical opal diffuser cover strip sized to simulate a T8 or T12 lamp. An opal diffuser cover strip having two side-by-side arcuate portions joined at opaque interior edges can be positioned under two side-by-side T5 lamps to simulate side-by-side T8 or T12 lamps.
    Type: Grant
    Filed: August 17, 2000
    Date of Patent: March 23, 2004
    Assignee: Acuity Brands, Inc.
    Inventors: Douglas J. Herst, Peter Y. Y. Ngai, Hue Ly
  • Patent number: 6428190
    Abstract: A cord manager for a suspended electric lighting fixture holds the fixture's power cord in close parallel relation to the fixture's suspension cable at electrical feed locations. The cord manager, which is suitably fabricated of extruded plastic, has an elongated first body portion with a lengthwise cable retention channel and an elongated second body portion having a power cord retention channel. In one embodiment of the invention, the retention channel for the suspension cable opens onto the power cord retention channel. In another embodiment, the suspension cable and power cord retention channels open outwardly away from each other. The cord manager provides the clean, finished look to the lighting installation at power feed locations.
    Type: Grant
    Filed: May 9, 2000
    Date of Patent: August 6, 2002
    Assignee: Acuity Brands, Inc.
    Inventors: Douglas J. Herst, Utkan Salman
  • Patent number: 6345800
    Abstract: A universal load-bearing hanger bracket for hanging a lighting fixture below a grid ceiling has opposed shaped hanger strips which when joined together form an elongated bracket body having a base end with a T-bar channel for securing the hanger bracket to the T-bar of the grid ceiling to thus provide an “on-grid” suspension, and a rail gripping structure above the T-bar channel for securing the hanger bracket to an optional mounting rail of a grid ceiling for an “off-grid” suspension. A hanger bracket assembly is further described wherein an electrical junction box is secured to the body of the hanger bracket and wherein a female plug having a downwardly facing plug end is provided at the bottom wall of the junction box so as to extend through the grid ceiling to provide an accessible electrical outlet next to the suspension location for the lighting fixture.
    Type: Grant
    Filed: July 27, 1999
    Date of Patent: February 12, 2002
    Assignee: NSI Enterprises, Inc.
    Inventors: Douglas J. Herst, Michael Tran
  • Patent number: 6273592
    Abstract: A luminaire 11 has baffle elements 31 in the down light opening of the luminaire's housing 15 for shielding the luminaire's light source 27 from direct view at normal viewing angles S. The bottom edges 51 of the baffle elements are provided with visual accent areas 55 which, at shielded viewing angles, exhibit relatively high observable brightness as compared to the relatively low observable brightness of the baffle elements' reflective surfaces 53. The visual accent area of the baffle elements is relatively small as compared to the baffles' reflective surfaces so as to produce a visual accent without visual discomfort associated with direct and reflected glare.
    Type: Grant
    Filed: November 8, 1999
    Date of Patent: August 14, 2001
    Assignee: NSI Enterprises, Inc.
    Inventors: Douglas J. Herst, Peter Y. Y. Ngai, Hue Ly
  • Patent number: 6247828
    Abstract: A housing for a direct-indirect lighting fixture having a light baffle in the bottom opening of the fixture is fabricated from a unitary extruded part having a baffle plate integrally interconnecting sidewall portions and a central housing structure for the lighting fixture housing. The baffle plates are provided with a suitable aperture pattern by means of a punching process.
    Type: Grant
    Filed: March 9, 1995
    Date of Patent: June 19, 2001
    Assignee: NSI Enterprises, Inc.
    Inventor: Douglas J. Herst
  • Patent number: D472665
    Type: Grant
    Filed: December 24, 2001
    Date of Patent: April 1, 2003
    Assignee: Acuity Brands, Inc.
    Inventors: Douglas J. Herst, Utkan Salman
  • Patent number: D472666
    Type: Grant
    Filed: December 24, 2001
    Date of Patent: April 1, 2003
    Assignee: Acuity Brands, Inc.
    Inventors: Douglas J. Herst, Utkan Salman
  • Patent number: D472667
    Type: Grant
    Filed: December 24, 2001
    Date of Patent: April 1, 2003
    Assignee: Acuity Brands, Inc.
    Inventors: Douglas J. Herst, Utkan Salman
  • Patent number: D472668
    Type: Grant
    Filed: December 24, 2001
    Date of Patent: April 1, 2003
    Assignee: Acuity Brands, Inc.
    Inventors: Douglas J. Herst, Utkan Salman
  • Patent number: D473007
    Type: Grant
    Filed: December 24, 2001
    Date of Patent: April 8, 2003
    Assignee: Acuity Brands, Inc.
    Inventors: Douglas J. Herst, Utkan Salman
  • Patent number: D476771
    Type: Grant
    Filed: April 22, 2002
    Date of Patent: July 1, 2003
    Assignee: Acuity Brands, Inc.
    Inventors: Douglas J. Herst, Utkan Salman
  • Patent number: D477105
    Type: Grant
    Filed: April 22, 2002
    Date of Patent: July 8, 2003
    Assignee: Acuity Brands, Inc.
    Inventors: Douglas J. Herst, Utkan Salman
  • Patent number: D480168
    Type: Grant
    Filed: August 26, 2002
    Date of Patent: September 30, 2003
    Assignee: Acuity Brands, Inc.
    Inventors: Douglas J. Herst, Peter Y. Y. Ngai, Michael Tran
  • Patent number: D480172
    Type: Grant
    Filed: August 26, 2002
    Date of Patent: September 30, 2003
    Assignee: Acuity Brands, Inc.
    Inventors: Douglas J. Herst, Peter Y. Y. Ngai, Michael Tran
  • Patent number: D480500
    Type: Grant
    Filed: August 26, 2002
    Date of Patent: October 7, 2003
    Assignee: Acuity Brands, Inc.
    Inventors: Douglas J. Herst, Peter Y. Y. Ngai, Michael Tran
  • Patent number: D480501
    Type: Grant
    Filed: August 26, 2002
    Date of Patent: October 7, 2003
    Assignee: Acuity Brands, Inc.
    Inventors: Douglas J. Herst, Peter Y. Y. Ngai, Michael Tran
  • Patent number: D480502
    Type: Grant
    Filed: August 26, 2002
    Date of Patent: October 7, 2003
    Assignee: Acuity Brands, Inc.
    Inventors: Douglas J. Herst, Peter Y. Y. Ngai, Michael Tran
  • Patent number: D480503
    Type: Grant
    Filed: August 26, 2002
    Date of Patent: October 7, 2003
    Assignee: Acuity Brands, Inc.
    Inventors: Douglas J. Herst, Peter Y. Y. Ngai, Michael Tran
  • Patent number: D480530
    Type: Grant
    Filed: August 26, 2002
    Date of Patent: October 7, 2003
    Assignee: Acuity Brands, Inc.
    Inventors: Douglas J. Herst, Peter Y. Y. Ngai, Michael Tran
  • Patent number: D481488
    Type: Grant
    Filed: August 26, 2002
    Date of Patent: October 28, 2003
    Assignee: Acuity Brands, Inc.
    Inventors: Douglas J. Herst, Peter Y. Y. Ngai, Michael Tran