Metal fusion bonding – With means to remove – compact – or shape applied flux or filler – By fluid blast or suction
Patent
1982-02-22
1985-02-05
Lin, Kuang Y.
Metal fusion bonding
With means to remove, compact, or shape applied flux or filler
By fluid blast or suction
228264, B23K 300
Patent
active
044974272
ABSTRACT:
A tip assembly for a desoldering instrument, which features a replacable tip. The tip assembly itself includes a tip housing which houses the replaceable tip and a spacer bushing. Screwed into the tip housing is an end cap against which the spacer bushing bears. The replaceable tip preferably consists of Teflon; that is, polytetrafluoroethylene resin. The Teflon may be substantially pure Teflon which has the advantage that it releases solder readily, or it may consist of a conductive Teflon, filled or mixed, for example, with carbon, which makes it conductive and provides an anti-static feature. The tip housing extends very closely to the outer end of the tip, to provide a heat sink and to provide electrical conduction. Alternatively, the tip may be relatively long and extend substantially through the bore of the tip housing. It is surrounded by a spacer bushing of pure Teflon. When the tip wears down substantially to the tip housing, it may be removed and a portion of the spacer bushing may be severed and put behind the replaceable tip, thereby to extend the tip again through the housing. This procedure may be repeated until all of the spacer bushing is behind the tip. Both the tip housing and the end cap may form a single unit, and preferably consist of aluminum, to provide a lightweight tip assembly which is conductive for both heat and electricity.
REFERENCES:
patent: 3862468 (1975-01-01), Fortune
patent: 4056334 (1977-11-01), Fortune
patent: 4204299 (1980-05-01), Fortune
Anderson Daniel T.
Lin Kuang Y.
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