Use of electrostatic bias to clean non-electrostatically sensiti

Details Use of electrostatic bias to clean non-electrostatically sensiti Use of electrostatic bias to clean non-electrostatically sensiti

1997-02-14

2000-11-14

Warden, Jill

Cleaning and liquid contact with solids

Processes

Including application of electrical radiant or wave energy...

134 13, 134 2, 134 6, 134 7, 134902, 451 38, 451 39, 451 75, 451 78, 451102, B08B 600

Patent

active

06146466&

ABSTRACT:
An apparatus and method that enhances removal of contaminating particles from surfaces of a non-electrostatically sensitive components that are cleaned using a carbon dioxide cleaning spray. The apparatus includes a programmable power supply that is connected to ground and to the non-electrostatically sensitive component. The surface charge of the component is determined by cleaning the surface without adding any voltage or charge bias to the component. Then the surface is reversed-biased with a voltage having the opposite polarity by a large amount using the programmable power supply. The surface is then cleaned a second time, which removes the contaminating particles that were bound to the surface by electrostatic forces generated during the first cleaning. Thus, reversing the polarity of the charge on the surface that is to be cleaned removes the strong attraction between the contaminating particles and the surface and enhances removal of the contaminating particles from the surface.

REFERENCES:
patent: 4132567 (1979-01-01), Blackwood
patent: 4535576 (1985-08-01), Shukla et al.
patent: 4974375 (1990-12-01), Tada et al.
patent: 5190064 (1993-03-01), Aigo
patent: 5202008 (1993-04-01), Talich et al.
patent: 5364472 (1994-11-01), Heyns et al.
patent: 5409418 (1995-04-01), Krone-Schmidt et al.
patent: 5421766 (1995-06-01), Shank, Jr.
patent: 5480563 (1996-01-01), Mitsumori et al.
patent: 5601478 (1997-02-01), Mesher
patent: 5605484 (1997-02-01), Bailey et al.
patent: 5628463 (1997-05-01), Nakamura
patent: 5651834 (1997-07-01), Jon et al.
patent: 5784905 (1998-08-01), Townsend et al.
patent: 5837064 (1998-11-01), Bowers

Affiliated with

Also associated with

Rating

Use of electrostatic bias to clean non-electrostatically sensiti does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Use of electrostatic bias to clean non-electrostatically sensiti, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Use of electrostatic bias to clean non-electrostatically sensiti will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2061571