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:
Jun. 27, 1978
Filed:
Feb. 09, 1976
John L Myers, Dayton, OH (US);
Ledex, Inc., Dayton, OH (US);
Abstract
An electromagnetic device includes a stator having a first closed flux carrying path including a core and an air gap opening in the core. Flux is generated in the flux carrying path by a coil, with the direction of flux flow across the air gap being perpendicular to pole surfaces defining the air gap. An armature is mounted to be movable between the pole surfaces and to overlap varying areas of the pole surfaces in dependence upon the position of the armature. The overlap areas are directly proportional to the position of the armature. In one embodiment a bi-directional device having two such closed flux carrying path simultaneously acts on a single armature. The equilibrium position of the armature is dependent on the relative flux flow through the two flux carrying paths. A further embodiment is disclosed in which an air gap opening is inclined to the direction of flux flow in the core of the flux path. The area of each pole surface defining the inclined air gap exceeds the cross-sectional area of the core.