The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 21, 1997
Filed:
May. 22, 1995
Ari M Hukki, Edgewood, KY (US);
Brian S Carr, Ft. Wright, KY (US);
Emerson Electric Co., St. Louis, MO (US);
Abstract
A screening system having a resiliently mounted housing with a screen extending thereacross. The housing is vibrated by a low frequency vibratory drive using eccentric weights. About the peripheral frame of the screen, a high frequency drive or drives is employed to vibrate the screen in the range of 20,000 Hz. The high frequency vibration is generated at the peripheral frame about the screen. The screen may be responsive to the high frequency vibrations in a plate-like manner or as a membrane. With the high frequency drives mounted within the housing, a structure made of a sheet extends from a mounting flange inwardly to a mounting ring supporting the screen and the high frequency drives and inwardly to a collecting system including a trough and a central dome. The center of the dome may be fixed to the screen and include a high frequency drive.