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:
Oct. 02, 1984
Filed:
Nov. 10, 1981
Takao Takeda, Chigasaki, JP;
Hiroshi Ito, Tokyo, JP;
Hitoshi Yamazaki, Yokohama, JP;
Atsushi Hattori, Kanagawa, JP;
Seiichiro Yamamoto, Kamakura, JP;
Jun Imai, Hiratsuka, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A discharge lamp having a discharge path-defining member which so defines the discharge path in the bulb that it runs in a convoluted manner with interlinked passages running between the top and the bottom of the bulb, wherein the top portion of the discharge path-defining member is provided with a top plate which permits one of the curved passage-interlinking portions at the bulb top to pass along the upper surface thereof, such that the shadow of the discharge path-defining member is eliminated from the bulb top and that the shape of the bulb can be freely selected, also enabling the lamp to be designed such that it is not easily broken, the discharge path-defining member can be easily and intimately fitted, and that the output of light is not reduced in the bulb top region.