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| Number | Title | Issue Date |
| 7560148 | Lens assembly apparatus and method A thermal barrier apparatus includes a lens cell with a vacuum chamber, the lens cell having opposing lenses, and a one-way gas valve coupled to the lens cell to allow venting of the vacuum chamber in response to thermal expansion of gas in the vacuum chamber. ... | 07/14/2009 |
| 7370988 | In-grade light fixture housing and hydrological barrier plate for use therein A hydrological barrier plate for in-grade light fixture housings and a housing for use with light fixtures to prevent water entry into the water sensitive compartments of the light fixture. The barrier plate has a plate body with an opening in which is sealably disp... | 05/13/2008 |
| 7175297 | In-grade light fixture with leveling and alignment mechanisms, installation features and anti-condensation valve An in-grade light fixture, comprising a below grade light fixture having a light opening substantially at grade level. An optical chamber is arranged within the light fixture housing and holding a light source generating light that passes through the light opening. ... | 02/13/2007 |
| 7041901 | Method and apparatus for providing an environmental barrier between an interior and exterior of an electrical enclosure using a plug and seal An electrical fixture is disclosed that has an electrical enclosure, a knockout plug coupled to the electrical enclosure with an interference fit, and a seal coupled to a circumference of the knockout plug between the knockout plug and electrical enclosure so that t... | 05/09/2006 |
| RE39084 | Adjustable mount for sealed light systems An adjustable mount for use with light fixtures that are sealed to prevent entry of moisture and contaminants. O-ring seals are utilized to connect and seal the components of the adjustable mount so that it is not a source of moisture or loss of vacuum. The adjustab... | 05/02/2006 |
| 7033038 | In-grade light fixture housing and hydrological barrier plate for use therein A hydrological barrier plate for in-grade light fixture housings and a housing for use with light fixtures to prevent water entry into the water sensitive compartments of the light fixture. The barrier plate has a plate body with an opening in which is sealably disp... | 04/25/2006 |
| 6940012 | Method and apparatus for providing an environmental barrier between an interior and exterior of an electrical enclosure using a plug and seal An electrical fixture is disclosed that has an electrical enclosure, a knockout plug coupled to the electrical enclosure with an interference fit, and a seal coupled to a circumference of the knockout plug between the knockout plug and electrical enclosure so that t... | 09/06/2005 |
| 6254258 | Sealed light fixture A sealed light fixture having a valve mounted in the housing to vent pressure that builds-up inside the housing during operation of the light and to prevent moisture and contaminants from entering the housing. The light fixture automatically creates a vac... | 07/03/2001 |
