Fine mesh screening

Details Fine mesh screening Fine mesh screening

1993-07-20

1995-03-21

Dayoan, D. Glenn

Classifying, separating, and assorting solids

Sifting

Elements

310328, B07B 142

Patent

active

053988167

ABSTRACT:
A screening system having a resiliently mounted frame with a screen extending thereacross. The frame is vibrated by a low frequency vibratory drive using eccentric weights. About the peripheral frame of the screen, a high frequency drive or drives is employed to vibrate the screen in the range of 20,000 Hz. The high frequency vibration is generated at the peripheral frame about the screen. The screen is responsive to the high frequency vibrations in a plate-like manner rather than as a membrane.

REFERENCES:
patent: 4274953 (1981-06-01), Jackson
patent: 4728422 (1988-03-01), Bailey
patent: 5143222 (1992-09-01), Monteith
patent: 5221008 (1993-06-01), Derrick, Jr. et al.
patent: 5265730 (1993-11-01), Norris et al.

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