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. 01, 2025
Filed:
Sep. 06, 2023
United States of America As Represented BY the Secretary of the Navy, Arlington, VA (US);
John Miesner, Fairfax, VA (US);
The United States of America, as represented by the Secretary of the Navy, Washington, DC (US);
Abstract
Example embodiments provide a voice coil apparatus that may comprise corner posts, a voice coil wound directly on to the corner posts, the coil forming straight sides between the corner posts due to winding tension, and a center flux return having straight sides and having a continuous plated layer of electrically conductive material, the center flux return being made of a ferromagnetic material. The voice coil apparatus may further comprise rubber mounts at corners of the center flux return and supporting the corner posts, and configured to provide high lateral compression stiffness and low axial shear stiffness in order to facilitate axial movement of the voice coil. In example embodiments, the voice coil lacks a coil former. The rubber mounts and the corner posts establish a uniform offset. The continuous plated layer serves as a shorted turn.