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:
Jul. 08, 2003
Filed:
May. 31, 2002
Applicant:
Inventor:
Leonard Evansic, Graceton, PA (US);
Assignee:
FMC Technologies, Inc., Chicago, IL (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B65G 2/728 ;
U.S. Cl.
CPC ...
B65G 2/728 ;
Abstract
A vibratory conveying apparatus embodying the principles of the present invention includes a base, a trough, and at least one spring assembly mounting the trough on the base for vibratory conveyance of material in the trough. At least one of the spring assemblies of the conveying apparatus is configured for selective adjustment of the spring rate of the assembly, so that the conveying apparatus can be efficiently tuned for conveying different types of materials, without resort to varying the air gap of the associated electromagnetic vibratory drive, or by otherwise altering spring rates or weight ratios of the conveying apparatus.