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:
Jun. 16, 1987
Filed:
Mar. 08, 1984
Applicant:
Inventors:
Arthur L Dean, Indiana, PA (US);
Robert E Kraft, Indiana, PA (US);
Kenneth M Marshall, Indiana, PA (US);
Assignee:
FMC Corporation, Chicago, IL (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H02K / ;
U.S. Cl.
CPC ...
310 29 ; 310 32 ;
Abstract
An electromagnetic vibratory exciter for use in vibratory equipment incorporates a free mass housed in an elongate housing having electromagnets mounted inboard at each end of the housing. The free mass is totally enclosed and carries a pair of armatures for cooperation with the electromagnets. An air gap is maintained during operation between the electromagnets and the armatures through the use of compression elements interposed between the electromagnet housing and the armatures of the free mass.