Patents Assigned to Russell Finex Limited of Russell House
  • Sieving apparatus
    Patent number: 4816144
    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.
    Type: Grant
    Filed: February 4, 1987
    Date of Patent: March 28, 1989
    Assignee: Russell Finex Limited of Russell House
    Inventor: John Monteith