Bucket for use in centrifugal separators

Claim 1

A bucket for suspension from a swing-type rotor in a centrifugal separator, comprising: (a) first, second, third and fourth integrally joined, successive side walls jointly providing a hollow rectangular-parallelepiped-shaped body, and a bottom plate integrally joined to the lower edges of said first through fourth side walls; (b) said first and third side walls having substantially flat end portions which are disposed in diametrically opposite relation to each other and having circumferentially central portions which are displaced radially outwardly from said substantially flat end portions to form a pair of arcuate wall portions on said first and third side walls respectively which arcuate wall portions are parts of a cylindrical surface extending substantially around a central axis of the bucket; (c) said second and fourth side walls being substantially flat and being disposed in diametrically opposite relation to each other, the upper portions of said second and fourth side walls being displaced radially outwardly in an inverted U-shape to form first and second bearings having recesses in the outer surfaces of said second and fourth side walls shaped to allow the bucket to be swingably suspended on the rotor; and (d) said second and fourth side walls being spaced from each other by a distance that is at least equal to the diameter of said cylindrical surface.