Dennis L Anderson

US Patent:

20060209542, Sep 21, 2006

Filed:

Mar 18, 2005

Appl. No.:

11/084334

Inventors:

Craig Anderson - Tukwila WA, US
Dennis Anderson - Boise ID, US
William Cresse - Boise ID, US

Assignee:

Preco Electronics, Inc. - Boise ID

International Classification:

F21V 33/00

US Classification:

362253000

Abstract:

A rotating beacon employs an array of LEDs mounted on a rotor assembly in a pattern for unidirectional emission wherein the LEDs are excited through noncontact inductive coupling between a load coupling on the rotor assembly and a source coupling on the stator or mount element. In a particular embodiment, a primary sender flat coil of an air gap transformer is disposed concentrically forming a disc and mounted juxtaposed to a secondary receiver flat coil so that power can be conveyed across the air gap while the rotor is in motion. The transferred power excites substantially all of the LED array in a fixed pattern on the rotating mount. In a second embodiment, the air gap transformer has a primary sender coil is mounted coaxially with a secondary receiver coil (which is typically but not necessarily inside the primary coil), so the secondary, with the array can freely rotate and draw power from the source.