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:
Jan. 29, 1991
Filed:
Jan. 30, 1990
Applicant:
Inventor:
James Irwin, Vandalia, OH (US);
Assignee:
Lucas Ledex Inc., Vandalia, OH (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02K / ; H01F / ;
U.S. Cl.
CPC ...
310181 ; 310 29 ; 310184 ; 335230 ;
Abstract
A force motor having four magnetic lanes arranged annularly around an axially movable central shaft, where the shaft is connected to an armature which also moves axially with the shaft within a gap located between two coils forming each lane of the motor. The four magnetic lanes are electrically and magnetically independent and provide three levels of safety-redundancy in case of coil failure.