Koninklijke Philips Corporation N.v.

Zetec, Inc.

Jeffrey Raymond Gueble

Joseph W Grez

Kevin Arnold Miller

Richard Taylor

Scott E Hall

Bruce E Taber

Jerry Wood

Craig D Hanela

Piet C J Van Rens

William E Bryant

Devin M Nelson

Kurt Sadek

D I Stephan Leitner

Andreas Loibnegger

William Frederick Ziegenhagen

Stephen Timm

Paubla Mejia Tarango

Jevne Branden Micheau-Cunningham

Andreas Lolbneggar

Paul L W M Barten

Paulus L W M Barten

A device and method of eddy current based nondestructive testing of tubular structures made of electrically conductive materials is disclosed. The device includes a plurality of excitation electromagnets having an axis of symmetry and magnetoresistive sensors having an easy axis for magnetic field sensing; wherein the magnetoresistive sensors are arranged in a circular array on a single plane with the easy axis aligned radially with respect to the circular pattern and wherein the electromagnets are arranged in a circular pattern on both sides of the plane with their axes of symmetry being arranged parallel to the plane and orthogonal to radii of the circular pattern on which the electromagnets are placed.

Eddy current inspection probe based on magnetoresistive sensors

A method for tuning resonant spring assembly systems used in appliances such as power toothbrushes, particularly leaf spring systems, includes the step of measuring the frequency-dependent amplitude of the appliance workpiece, and then removing a portion of the spring member so as to decrease its spring rate sufficiently that the resonant frequency of the spring member closely approximates the drive frequency of the appliance.

Apparatus for converting side-to-side driving motion to rotational motion with a spring assembly and system for tuning the spring assembly

The apparatus for converting side-to-side to rotational motion for a workpiece includes a spring assembly with a movable base mounting element which is driven in a slightly arcuate reciprocal side-to-side motion and a fixed mounting element spaced apart from the base element and mounted in the appliance so that it does not rotate or move in operation of the apparatus. A spring member, such as two planar leaf springs positioned at an angle to each other, is mounted between the movable base element and the fixed mounting element. A drive shaft member extends from the movable base element through the fixed mounting element and beyond. A workpiece such as a brushhead is mounted on the distal end of the drive shaft. The spring member is configured so that it is substantially less resistant to twisting action than bending action, such that the side-to-side motion of the base element results in rotation of the workpiece. A method for tuning resonant spring assembly systems used in appliances such as power toothbrushes, particularly leaf spring systems, includes the step of measuring the frequency-dependent amplitude of the appliance workpiece, and then removing a portion of the spring member so as to decrease its spring rate sufficiently that the resonant frequency of the spring member closely approximates the drive frequency of the appliance.

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Bainbridge Island, WA, United States of America

Jeffrey Raymond Gueble