Self balancing centrifuge

Details Self balancing centrifuge Self balancing centrifuge

1978-07-19

1979-06-12

Krizmanich, George H.

Chemistry: physical processes

233 26, B04B 502

Patent

active

041577817

ABSTRACT:
A centrifuge comprises a pair of sample containers supported, respectively, on opposite ends of a horizontal rotor that is spun by a drive motor about a vertical rotation axis. The sample containers carry storage tanks for fluid that is automatically distributed between the tanks for balancing prior to centrifuging. Any weight imbalance between the loaded sample containers is measured by a pair of pressure transducers located between the rotor and a stationary, annular support member. Electronic circuitry monitors the outputs of the pressure transducers and in response controls a servo operated valve to redistribute the balancing fluid between the storage tanks under the force of an external vacuum source. Digital logic prevents energization of the drive motor for centrifuging the samples until the load is balanced.

REFERENCES:
patent: 3330168 (1967-07-01), Kahn
patent: 3799348 (1974-03-01), Mazza
patent: 3921898 (1975-11-01), Finkel

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