Torsionally elastic assembly for driving a centrifuge rotor

Details Torsionally elastic assembly for driving a centrifuge rotor Torsionally elastic assembly for driving a centrifuge rotor

1994-07-07

1995-10-10

Scherbel, David A.

Imperforate bowl: centrifugal separators

Including vibration damping means

494 84, 464 51, B04B 900, F16D 312

Patent

active

054566533

ABSTRACT:
A centrifuge includes a drive shaft-to-hub coupling assembly for providing vibration damping that is selective to torsional damping over lateral damping. An impeller is fixed to a drive shaft and a receiver is fixed to a rotor-bearing hub. Relative rotation between the impeller and the receiver is restricted to compression and decompression of elastomers trapped between teeth extending from the impeller and from the receiver. The elastomers function to damp torsional vibrations and torsionally induced lateral vibrations. The receiver is prevented from becoming axially misaligned with the impeller by including one or more rigid annular bushings that maintain the distance between the hub and the drive shaft, thereby preventing the elastomers from being deformed in a manner which would damp lateral vibrations. The annular bushing is mounted to allow relative rotation between the impeller and the receiver.

REFERENCES:
patent: 2827229 (1958-03-01), Blum
patent: 3851819 (1974-12-01), Tadokoro
patent: 4070290 (1978-01-01), Crosby
patent: 4193536 (1980-03-01), Kubota
patent: 4205261 (1980-05-01), Franklin
patent: 4412831 (1983-11-01), Avery et al.
patent: 4456581 (1984-06-01), Edelmann et al.
patent: 4586918 (1986-05-01), Cole
patent: 5342282 (1994-08-01), Letourneur

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