Coating electronic components by means of fluidized bed

Details Coating electronic components by means of fluidized bed Coating electronic components by means of fluidized bed

1975-03-26

1977-03-22

Smith, Ronald H.

Coating processes

Solid particles or fibers applied

Nonuniform speed or nonrectilinear base motion

118308, 118309, 118416, 118428, 118DIG5, 427185, 427195, B05D 124

Patent

active

040138070

ABSTRACT:
A workpiece such as an electronic component, comprising a body and leads that project in one direction from the body, has its body coated by immersing it in a fluidized bed while the workpiece is vibrated. Immersion depth is such that the uppermost surface of the body is at or just slightly below the top surface of the fluidized bed. Vibration of the workpiece during immersion ensures a uniform thickness coating all over the body and prevents "pants legs" on the leads.

REFERENCES:
patent: 3167454 (1965-01-01), Tompson
patent: 3197328 (1965-07-01), Jung et al.
patent: 3261707 (1966-07-01), Korski et al.
patent: 3431887 (1969-03-01), Pettigrew et al.
patent: 3834927 (1974-09-01), Putney
patent: 3875898 (1975-04-01), Braden
patent: 3884182 (1975-05-01), Jones

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