Method of making replaceable lamp unit for use in automobile...

Details Method of making replaceable lamp unit for use in automobile... Method of making replaceable lamp unit for use in automobile...

H - Electricity

01

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316/24

H01J 9/34 (2006.01) F21V 19/00 (2006.01) H01K 1/46 (2006.01) H01K 3/08 (2006.01)

Patent

CA 1327230

-24- TITLE: METHOD OF MAKING REPLACEABLE LAMP UNIT FOR USE IN AUTOMOBILE HEADLIGHT ABSTRACT A method of making a replaceable lamp unit for use in an automobile headlight. The method involves the steps of providing a metallic insert with a roughened (e.g., sandblasted) surface, inserting this member a predetermined depth within a plastic (e.g., thermoplastic) holder, and applying radio frequency (RF) induction heating to the insert. The unit's lamp may then be attached directly (e.g., clamped by an extension of the insert) or indirectly (e.g., via a two-part, separate clamp which is secured about the lamp and is welded to a forward, curved surface of the insert). Use of a roughened surface enhances the bonding operation between plastic holder and metallic insert by substantially reducing the time (e.g., from about 38 to 85 percent) for such bonding to occur. Reducing time at this step in the operation also facilitates alignment of the insert and other elements of the unit.

557635

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