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:
Aug. 08, 1989
Filed:
Sep. 28, 1988
Applicant:
Inventors:
Thomas K Swanson, Rockford, IL (US);
Elwood J Meyers, Rockford, IL (US);
Assignee:
Barber-Colman Company, Loves Park, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F / ;
U.S. Cl.
CPC ...
335261 ; 335262 ;
Abstract
An electromagnetic actuator includes a frusto-conical projection having a central opening formed therein. A winding is contained in a housing surrounding the projection which encompasses the projection. A shaft extends through a central opening in the projection and carries an armature having a reciprocally configured frusto-conical surface. Excitation of the winding causes linear movement of the shaft on bearings contained within the housing.