The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 09, 2002
Filed:
May. 25, 2000
Mark E. Marler, Glastonbury, CT (US);
Charles C. Coffin, Vernon, CT (US);
Brad Guilani, Woodstock Valley, CT (US);
Heng-Yi Lai, Vernon, CT (US);
Patricia A. Derwinski, Farmington, CT (US);
Otis Elevator Company, Farmington, CT (US);
Abstract
A sound absorbing light fixture ( ) installed in a surface system, such as an elevator ceiling system ( ), of an enclosed interior, such as the interior ( ) of an elevator cab ( ) is presented. The light fixture ( ) comprises a frame ( ) disposed in fixed relationship to the surface system, the frame ( ) having an interior rear surface and interior side surfaces extending outwardly from the rear surface to define a cavity ( ). A light source ( ) is supported by the frame ( ) within the cavity ( ). Additionally, a light diffuser ( ) is disposed in fixed relationship to a front portion of the frame ( ) between the light source ( ) and the enclosed interior. The installed light fixture ( ) enhances a sound absorption coefficient, e.g., above 0.6, of the surface system for a predetermined frequency range of sound energy, e.g., 300-600 Hz.