Method and apparatus for prepping surfaces with a high-frequency forced pulsed waterjet

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United States of America Patent

PATENT NO 8550873
SERIAL NO

12504188

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Abstract

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A method of prepping a surface using a high-frequency forced pulsed waterjet entails generating a high-frequency signal having a frequency f using a high-frequency signal generator, applying the high-frequency signal to a transducer having a microtip to cause the microtip of the transducer to vibrate to thereby generate a forced pulsed waterjet through an exit orifice of a nozzle having an exit orifice diameter d and a length L. The forced pulsed waterjet prepares the surface to within a predetermined range of surface roughness. The surface roughness is determined by selecting operating parameters comprising a standoff distance (SD), a traverse velocity VTR of the nozzle, a water pressure P, a water flow rate Q, a length-to-diameter (L/d) ratio, a microtip-to-orifice distance (a), the frequency f, and an amplitude A of the high-frequency signal.

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Patent Owner(s)

Patent OwnerAddress
VLN ADVANCED TECHNOLOGIES INCOTTAWA ONTARIO K1J 6X7

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Daniels, Bruce R Ottawa, CA 9 51
Tieu, Andrew Hung Ottawa, CA 8 50
Vijay, Mohan M Gloucester, CA 17 269
Yan, Wenzhuo Ottawa, CA 17 156

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