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:
Dec. 05, 2000
Filed:
Jan. 15, 1999
Zhiwei Xu, San Diego, CA (US);
Peisheng Qian, Shanghai, CN;
Other;
Abstract
A lighting device including a temperature sensing device for controlling the operation of the light emitting device. The lighting device includes a housing, a reflector coupled to the housing, a bulb received in the housing, the bulb being connected to a source of electrical power, and a capillary tube thermostat received in the housing. The capillary tube is an elongated metal member having a hollow center filled with a vacuum charged fluid. The fluid is calibrated to open the thermostat between 150.degree. F. and 350.degree. F. The capillary tube thermostat is in electrical communication with the power source and is supported by the housing in thermal communication with the bulb. The thermostat extends along at least a portion of the length of the bulb. The thermostat is also in thermal communication with the reflector, and thus will open the thermostat contacts if an overheat condition is detected at either the bulb or the reflector.