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:
Nov. 25, 2008
Filed:
Sep. 02, 2003
Mitsuhiro Ikeda, Shizuoka, JP;
Takashi Osawa, Shizuoka, JP;
Masaomi Takeda, Shizuoka, JP;
Koji Kokufu, Shizuoka, JP;
Mitsuhiro Ikeda, Shizuoka, JP;
Takashi Osawa, Shizuoka, JP;
Masaomi Takeda, Shizuoka, JP;
Koji Kokufu, Shizuoka, JP;
Osram-Melco Ltd., Kanagawa, JP;
Abstract
At the end of life of a fluorescent lamp having a base to which a pin is press-fitted, it is an object to prevent the pin from dropping or slanting, etc. A fluorescent lamp includes a base having a base body and a pin press-fitted to a hole formed on the base body. A pin retaining force (a pin torque of the base) Fe after use by which the base body retains the pin is at least 0.08 Nm after the fluorescent lamp is burned for a rated life, and a rate Fe/Fi of an initial pin retaining force Fi by which the base body retains the pin before use of the fluorescent lamp and the pin retaining force Fe after use is at least 0.66.