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:
Oct. 20, 1987
Filed:
Oct. 20, 1986
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);
Primary Examiner:
Int. Cl.
CPC ...
H02K / ;
U.S. Cl.
CPC ...
310 29 ;
Abstract
An elastomeric compression element for an electromagnetic exciter unit which has a generally semi-circular outer periphery, an elongate inner periphery, end portions merging the inner and outer peripheries, a planar base surface and a contoured contact surface. The central portion of the element is dimensioned to have a height and thickness greater than that at the end portions for providing a non-linear spring action with the reciprocating free mass inside the unit during electromagnetic conduction.