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:
Jun. 12, 2001
Filed:
Sep. 14, 1998
Chan K. Fai, Kowloon Bay, HK;
Abstract
A safety switch for a lamp is disclosed. The safety switch comprises a pair of electrodes having cylindrical shapes. Each electrode comprises an internal face with a conical cavity therein. The electrodes are arranged so that they are adjacently mounted with an aperture formed between the two conical cavities. In addition, there is a metal ball placed within the conical cavity. The metal ball forms a connection or disconnection of the electrodes. In one embodiment of the invention, the electrodes are horizontally mounted, and when the lamp is displaced from an upright position, the ball rests along the aperture formed between the two electrodes, thereby providing a connection of the electrodes and power and luminescence to the lamp. When the lamp is displaced from the upright position, the ball moves away from the aperture, thereby disconnecting the electrodes and power and luminescence to the lamp. In a second embodiment of the invention, the electrodes are vertically mounted, and when the lamp is in an upright position, the ball rests along the internal conical cavity of the lower electrode, thereby providing power and luminescence to the lamp. When the lamp is displaced from the upright position, the ball moves toward the aperture, thereby connecting the electrodes and disconnecting power and luminescence to the lamp. Accordingly, the safety switch of this invention may be mounted anywhere along the body of the lamp and serves as an effective device for controlling power and luminescence to the lamp when the lamp is in an upright position.