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:
May. 30, 2006
Filed:
Sep. 04, 2004
Applicants:
Arthur Lanni, Cary, NC (US);
Marty L. Trivette, Cary, NC (US);
Varagur R. Ramanan, Cary, NC (US);
Inventors:
Assignee:
ABB Technology AG, Zurich, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F 7/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
An electromagnetic actuator is provided that comprises a housing, a solenoid coil, and an armature. The armature is movably disposed in an interior cavity defined by the housing. Irregular gaps are formed between the armature and the housing to increase the initial force of the actuator and to improve the latching force of the actuator after the actuator has been actuated.