Imperforate bowl: centrifugal separators – Including vibration damping means
Patent
1987-12-14
1989-07-11
Hornsby, Harvey C.
Imperforate bowl: centrifugal separators
Including vibration damping means
494 1, 494 83, B04B 904, B04B 1300, F16F 1500
Patent
active
048467731
ABSTRACT:
A centrifuge system includes a drive shaft bearing mounted to a drive shaft for engaging a solenoid actuated plunger in low friction contact over a predetermined angular velocity range of the drive shaft. The drive shaft bearing includes a frustoconical bearing surface that contacts a plunger bearing mounted in an end of the plunger when the solenoid actuates the plunger. The frustoconical bearing surface transforms vibrations of the drive shaft transverse to its axis of rotation into linear motion of the plunger relative to the drive shaft. The plunger is mounted inside the solenoid such that the solenoid, the plunger and the drive shaft are substantially concentric. The plunger is movable in the solenoid in response to application of an appropriate electrical current to the solenoid. However, the plunger fits sufficiently close within the solenoid that the force movement of the plunger arising from contact with the vibrating drive shaft bearing is damped by friction between the solenoid and the plunger.
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Giebeler Robert H.
Inouye Kenneth K.
Beckman Instruments Inc.
Harder Paul R.
Haugland Scott J.
Hornsby Harvey C.
May William H.
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