Metal fusion bonding – With means to remove – compact – or shape applied flux or filler – By fluid blast or suction
Patent
1995-06-30
1996-12-03
Ramsey, Kenneth J.
Metal fusion bonding
With means to remove, compact, or shape applied flux or filler
By fluid blast or suction
219230, 219240, B23K 1018
Patent
active
055799825
ABSTRACT:
A control circuit for a vacuum desoldering apparatus includes a timing mechanism to ensure that vacuum is maintained for a necessary minimum amount of time, even if a vacuum actuation switch of the desoldering tool is prematurely deactivated by the operator. If the operator presses the vacuum actuator switch for a period of time longer than the predetermined minimum time, vacuum will flow until the switch is released. However, if the operator actuates the switch very briefly, that is, for less than the predetermined minimum vacuum actuation time, the vacuum supply is maintained in an activated state for the predetermined minimum time.
REFERENCES:
patent: 3392897 (1968-07-01), Siegel
patent: 4768699 (1988-09-01), Abbagnara
Abbagnaro Louis A.
Canaday Marshall
McDavid, Jr. Charles H.
Ferguson Jr. Gerald J.
Pace Incorporated
Ramsey Kenneth J.
Smith Evan R.
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