Patent ID: 6845868

Claim:
A multifrequency vibratory adapter system for use with a vibratory separator, the vibratory separator including a housing formed with an inlet for material to be screened, a first outlet for discharge of undersized particles, and a second outlet for discharge of oversized particles; one or more screens supported in the housing between the inlet and the first outlet such that material entering the housing through the inlet engages the at least one screen, and wherein undersized particles pass through the one or more screens and exit the housing through the first outlet, whereas oversized particles do not pass through at least one of the one or more screens and exit the housing through the second outlet; and a source of single frequency vibratory excitation for exciting the separator so as to screen particulate material provided thereto, said multifrequency vibratory adapter system includes: at least one interface apparatus mounted in excitation transmitting contact with an associated screen; and at least one multifrequency converter unit, arranged in excitation conducting association with said at least one interface apparatus, operative to produce a multifrequency excitation when exposed to a single frequency excitation, thereby to cause a corresponding multifrequency excitation of said at least one interface apparatus, and thus also, of the associated screen, wherein each of said at least one multifrequency converter unit includes: at least one actuator element for conducting excitation energy to said at least one interface apparatus; and resilient attachment apparatus for attaching said at least one actuator element to a support portion, and said adapter system also includes: apparatus for mounting said support portion in association with said housing; and at least one elastic buffer apparatus, arranged between said at least one actuator element and said at least one interface apparatus, for adjusting in non-linear fashion, the characteristics of the multifrequency excitation transmitted therebetween, wherein said multifrequency vibratory adapter system is associated with a predetermined one of the one or more screens.