Sieving apparatus

Details Sieving apparatus Sieving apparatus

1987-02-04

1989-03-28

Reeves, Robert B.

Classifying, separating, and assorting solids

Sifting

Elements

2093651, 366127, B07B 142

Patent

active

048161446

ABSTRACT:
Sieving apparatus has a piezo-electric transducer (1) directly bonded to a grating (100), the supply to the transducer (1) being controlled by sensing resonance of the grating (100) and any deviation therefrom and controlling the supply to maintain resonance.

REFERENCES:
patent: 2695102 (1954-11-01), Hamacher
patent: 2880871 (1959-04-01), Bruninghaus
patent: 3261469 (1966-07-01), Wehner
patent: 3490584 (1970-01-01), Balamuth
patent: 4261817 (1981-04-01), Edwards et al.
patent: 4307964 (1981-12-01), Dudgeon et al.

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