Title:
CEMENT-FREE LAMP BASE
Document Type and Number:
WIPO Patent Application WO2003044830
Kind Code:
A9
Abstract:
Cement-free lamp base with spring locking. Lamps are normally joined with cement, which emits unhealthy chemicals when the lamp is switched on . The problem has been solved by replacing the cement with a cylindrical torsion spring (1) which tightly encloses a cylindrical part of a bulb (2) and has both of its ends connected in such a manner to a base (4) that the torsion spring (1) friction-locks the bulb (2) irrespective of whether the lamp is being screwed into or unscrewed form the socket.
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Inventors:
NILSON LEIF KARL GUSTAV (SE)
NILSON ULF KARL BERNHARD (SE)
NILSON ULF KARL BERNHARD (SE)
Application Number:
PCT/SE2002/002016
Publication Date:
April 08, 2004
Filing Date:
November 05, 2002
Export Citation:
Assignee:
NILSON LEIF KARL GUSTAV (SE)
NILSON ULF KARL BERNHARD (SE)
NILSON ULF KARL BERNHARD (SE)
International Classes:
H01J5/48; H01J5/50; H01J5/60; H01K1/46; H01K3/16; H01K; (IPC1-7): H01K1/46; H01J5/60
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