Fixed angle composite centrifuge rotor fabrication with filament

Details Fixed angle composite centrifuge rotor fabrication with filament Fixed angle composite centrifuge rotor fabrication with filament

1994-05-26

1997-02-11

Cooley, Charles E.

Imperforate bowl: centrifugal separators

Including plurality of miniature bowls distrubuted about...

494 81, 295271, 29530, 29889, 156172, 156430, B04B 502

Patent

active

056015224

ABSTRACT:
A fixed angle rotor and method of manufacture of a fixed angle rotor has a frustum shaped rotor having rounded surfaces reinforced by filament tow windings against both vertical and horizontal forces generated during centrifugation. A so-called "high speed" rotor has a bottom composite disc, a top composite disc, and a frustum shaped hollow fiber reinforced molded insert between the respective discs having a stepped exterior surface. An "ultra speed" rotor has a bottom composite disc, a top composite disc, and composite discs therebetween defining a stepped exterior surface. In both cases, these exterior steps have surfaces which capture the windings to the exterior of the rotor. A first class of individual fiber windings about the rotor is applied having a vertical reinforcement component parallel to the spin axis and normal to the laminate layers. These windings include either vertically disposed loops in grooves on the stepped exterior of the rotor which tie the top and bottom discs together (with the remainder of the rotor securely sandwiched therebetween) or vertically disposed windings in exterior grooves which extend over both top and bottom discs of the rotor. A second class of windings includes circumferential windings on the step surfaces of the rotor. Such windings are applied to fill in the stepped surfaces as well as to resist centrifugal forces of centrifugation.

REFERENCES:
patent: 4738656 (1988-04-01), Piramoon et al.
patent: 4781669 (1988-11-01), Piramoon
patent: 4790808 (1988-12-01), Piramoon
patent: 4817453 (1989-04-01), Breslich, Jr. et al.
patent: 4824429 (1989-04-01), Keunen et al.
patent: 5057071 (1991-10-01), Piramoon
patent: 5362301 (1994-11-01), Malekmadani et al.

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