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:
Jul. 03, 2001
Filed:
May. 26, 1999
Patrick Case, Fresno, CA (US);
B-K Lighting, Inc., Madera, CA (US);
Abstract
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 vacuum inside the housing to prevent condensation from causing corrosion and other problems for the light fixture. The pressure releasing mechanism permits easy installation of the housing cap and avoids damage to the fixture as a result of temperature caused pressure increases. The valve has a pressure equalizing mechanism that can be manually actuated to eliminate the vacuum and equalize the pressure inside the housing with the atmosphere so the housing can be disassembled and the lamp replaced when necessary.