Chemistry: electrical and wave energy – Processes and products – Electrostatic field or electrical discharge
Patent
1982-02-22
1984-11-13
Williams, Howard S.
Chemistry: electrical and wave energy
Processes and products
Electrostatic field or electrical discharge
204211, 204224M, 204228, 204297W, 204DIG7, 204225, C25F 314, C25F 700
Patent
active
044824459
ABSTRACT:
Methods and apparatus for electrochemically deburring perforate metallic clad dielectric laminates such, for example, as laminated printed circuit boards (PCBs) or printed wiring boards (PWBs) and similar machined and fabricated laminated dielectric parts; and, more specifically, methods and apparatus for removing burrs formed during drilling, punching and similar machining operations for forming holes in a workpiece and wherein the conductive path for current flow during the electrochemical deburring process extends through the thru-hole perforations formed in the workpiece being deburred so as to concentrate current densities and preferential electrochemical attack in the regions of the clad at the peripheral edges of the thru-hole perforations in the clad dielectric laminate.
REFERENCES:
patent: 2559263 (1951-07-01), Smith
patent: 2590927 (1952-04-01), Brandt et al.
patent: 2695872 (1954-11-01), Espy
patent: 2784155 (1957-03-01), Heinrich
patent: 2850444 (1958-09-01), Armstrong et al.
patent: 2890159 (1959-06-01), Amaya
patent: 2904479 (1959-09-01), McCord et al.
patent: 2963411 (1960-12-01), Scott
patent: 3027310 (1962-03-01), Lane
patent: 3071521 (1963-01-01), Ehrhart
patent: 3424667 (1969-01-01), Frank
patent: 3468775 (1969-09-01), Lanning et al.
patent: 3705843 (1972-12-01), Sickels
patent: 3745105 (1973-07-01), Kosowsky et al.
patent: 4202739 (1980-05-01), Csakvary et al.
The Boeing Company
Williams Howard S.
Williams T. L.
LandOfFree
Methods and apparatus for electrochemically deburring perforate does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Methods and apparatus for electrochemically deburring perforate , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Methods and apparatus for electrochemically deburring perforate will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2359884