Suspension system for centrifugal extractors

Claim 1

A CENTRIFUGAL EXTRACTOR COMPRISING; A FIRST STRUCTURE DEFINING A SUPPORTING FRAMEWORK, A SECOND STRUCTURE INCLUDING A NON-ROTARY TUB, A SPIN BASKET HAVING A LONGITUDINAL AXIS, SAID BASKET BEING MOUNTED FOR ROTATION IN SAID TUB ABOUT SAID AXIS, A SUSPENSION SYSTEM MOUNTING SAID SECOND STRUCTURE ON SAID FIRST STRUCTURE WITH SAID AXIS OF SAID SPIN BASKET INCLINED TO THE VERTICAL, SAID SUSPENSION SYSTEM INCLUDING RESILIENT MEANS ATTACHED TO SAID FIRST AND SECOND STRUCTURES AND APPLYING AN UPWARD FORCE TO SAID SECOND STRUCTURE IN A DIRECTION SUBSTANTIALLY PERPENDICULAR TO SAID AXIS OF SAID SPIN BASKET, SAID SUSPENSION SYSTEM FURTHER INCLUDING DIFFERENTIAL SUPPORTING MEANS MOVABLY ATTACHING SAID SECOND STRUCTURE TO SAID FIRST STRUCTURE FOR LIMITED RELATIVE MOVEMENT OF SAID SECOND STRUCTURE WITH RESPECT TO SAID FIRST STRUCTURE IN ANY DIRECTION EXCEPT AXIALLY REARWARD, THE MOVEMENT OF SAID SECOND STRUCTURE WHEN SAID SPIN BASKET IS ROTATING BEING SUCH THAT ANY POINT ON SAID AXIS OF SAID SPIN BASKET SUBSTANTIALLY GENERATES A CIRCLE, SAID DIFFERENTIAL SUPPORTING MEANS BEING SECURED TO SAID FIRST STRUCTURE BY ATTACHING MEANS, AND ATTACHING MEANS LYING IN A REFERENCE PLANE WHICH IS SUBSTANTIALLY PERPENDICULAR TO THE SECOND AXIS OF SAID SPIN BASKET AND SPACED FROM SAID SECOND STRUCTURE IN A DIRECTION AXIALLY OF SAID AXIS OF SAID BASKET, SAID AXIS INTERSECTING SAID PLANE AT A POINT, SAID DIFFERENTIAL SUPPORTING MEANS PROVIDING A SUPPORTING FORCE WHICH ALWAYS ACTS SUBSTANTIALLY THROUGH SAID POINT UNDER ALL NORMAL CONDITIONS OF USE OF SAID EXTRACTOR.