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. 20, 1999
Filed:
Oct. 31, 1997
Applicant:
Inventors:
Paul L Taillie, Rochester, NY (US);
Joel Sherwood Lawther, Rochester, NY (US);
John K Erickson, Victor, NY (US);
Assignee:
Eastman Kodak Company, Rochester, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B / ;
U.S. Cl.
CPC ...
396463 ; 335237 ; 335272 ; 335298 ; 310 / ;
Abstract
An electromagnetic actuator includes a core made of a soft magnetic material, a permanent magnet located between a pair of ends of the core, the permanent magnet being supported for movement, and an electrically conductive coil wrapped about a portion of the core. The reluctance of the core is adjustable to alter movement of the permanent magnet as a function of time upon application of electrical current to the coil of the electromagnetic actuator.