Patent ID: 7520660

Claim:
An improved suspension system for a liquid vortex mixer of the type having a mixing frame assembly mounted for angular movement about a pivot with respect to a base, the improvement in combination therewith comprising at least one energy absorbing damper element located between the mixing frame assembly and the base spaced radially apart and separate from the pivot and formed of viscoelastic polymer material such that the at least one energy absorbing damper element absorbs energy when the mixing frame assembly pivots with respect to the base and deforms the at least one energy absorbing damper element and wherein the improvement further includes a pivoting support having an elastomer element bonded between a first metal mounting structure located peripherally of the elastomer element and a second metal mounting structure located centrally of the elastomer element, and an indexing structure connected to the second metal mounting structure positively orienting one of the mixing frame assembly and the base secured to the first metal mounting structure with the other of the mixing frame assembly and the base secured to the second metal mounting structure.