Measuring apparatus and measuring method for...

Measuring and testing – Mass

Reexamination Certificate

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Reexamination Certificate

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07578207

ABSTRACT:
A measuring apparatus of submergence aggregate according to the present invention comprising a stock bin for storing fine aggregate, a fine aggregate feed hopper placed under the stock bin, a vibrating feeder placed under a discharge opening of the fine aggregate feed hopper, a screen device placed in the vicinity of an exit of the vibrating feeder, a measurement tank placed under the screen device, an electrode-type displacement sensor as means for measuring a water level placed above the measurement tank, and load cells as mass measuring means for measuring a mass of the measurement tank.

REFERENCES:
patent: 1733410 (1929-10-01), Johnson
patent: 4176965 (1979-12-01), Ito et al.
patent: 4895450 (1990-01-01), Holik
patent: 5969243 (1999-10-01), Frey et al.
patent: 6658921 (2003-12-01), Levallee et al.
patent: 355103425 (1980-08-01), None
patent: 11-6828 (1999-01-01), None
patent: 411083718 (1999-03-01), None
patent: 2000-61926 (2000-02-01), None
patent: 2000-84921 (2000-03-01), None
patent: 2000-84922 (2000-03-01), None
Shigeyuki Sogo et al., entitled “Development of a High Reliability Concrete Production System(Part 1)”, -Proposal for New Batching Method by Immersing Sand in Water to Facilitate Accruate Measurement- pp. 57-64., 2000.

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