초록 ▼

The filter assembly for swinging bucket type centrifuges includes a cylindrical filter body disposed within a filter body holder, both having hemispherical outer ends. The diameter of curvature of the filter body is smaller than the diameter of curvature of the holder allowing the contact surface be

The filter assembly for swinging bucket type centrifuges includes a cylindrical filter body disposed within a filter body holder, both having hemispherical outer ends. The diameter of curvature of the filter body is smaller than the diameter of curvature of the holder allowing the contact surface between the holder and the body to be in the shape of a ring; centrifugal forces thus result in compression of the filter body thereby preventing cracking. The filter\s crenelated shape is provided through use of a plunger to apply force to the filter against the crenelated filter membrane forming member. The filter assembly also may have a chamber and a meniscus equalizing pore around the filter holder. The chamber and appropriately positioned pore prevent fluid from rising during centrifugation and contaminating the particulate. A method for installation includes providing a filter body with an open inner end and a rounded outer end, placing a filter plate in one recess therein and a filter membrane in the other recess therein and applying force to provide the membrane with a crenelated shape. Another method includes the additional step of positioning an insert within the body to form a fluid retaining cavity and a meniscus equalizing pore.

대표청구항 ▼

A filter assembly for use with high-speed centrifugation apparatus comprising: a filter body adapted to be disposed within a filter holder in a centrifugal rotor, said filter body having an outer end of generally rounded configuration, with a radius of curvature greater than that of said filter hold

A filter assembly for use with high-speed centrifugation apparatus comprising: a filter body adapted to be disposed within a filter holder in a centrifugal rotor, said filter body having an outer end of generally rounded configuration, with a radius of curvature greater than that of said filter holder and defining an interior chamber; filter plate means disposed within said interior chamber, said filter plate means defining a plurality of fluid flow paths; a filter forming member disposed within said interior chamber of said filter body and adjacent said filter plate means, said filter forming member having a crenelated periphery for contact with a filter membrane, to form said membrane to a crenelated configuration.