Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Reexamination Certificate
2006-05-23
2006-05-23
Dougherty, Thomas M. (Department: 2834)
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
C310S323130, C310S323180, C310S323190, C310S328000, C310S334000
Reexamination Certificate
active
07049730
ABSTRACT:
An acoustic driver assembly for use with a spherical cavitation chamber is provided. The acoustic driver assembly includes at least one transducer, a head mass and a tail mass, coupled together with a centrally located threaded means (e.g., all thread, bolt, etc.). The head mass of the driver assembly is permanently attached to the exterior surface of the spherical cavitation chamber via brazing or diffusion bonding. In at least one embodiment, the transducer is comprised of a pair of piezo-electric transducers, preferably with the adjacent surfaces of the piezo-electric transducers having the same polarity. The surface of the head mass that is adjacent to the external surface of the chamber has a spherical curvature equivalent to the spherical curvature of the external surface of the chamber, thus providing maximum coupling efficiency between the acoustic driver and the cavitation chamber. In at least one embodiment a void filling material is interposed between one or more pairs of adjacent surfaces of the driver assembly.
REFERENCES:
patent: 3140859 (1964-07-01), Scarpa
patent: 4333796 (1982-06-01), Flynn
patent: 4339247 (1982-07-01), Faulkner et al.
patent: 4563341 (1986-01-01), Flynn
patent: 4757227 (1988-07-01), Danley et al.
patent: 4991152 (1991-02-01), Letiche
patent: 5030873 (1991-07-01), Owen
patent: 5658534 (1997-08-01), Desborough et al.
patent: 5659173 (1997-08-01), Putterman et al.
patent: 5722444 (1998-03-01), Prokopenko et al.
patent: 5858104 (1999-01-01), Clark
patent: 5994818 (1999-11-01), Abramov et al.
patent: 5998908 (1999-12-01), Goodson
patent: 6361747 (2002-03-01), Dion et al.
patent: 6617765 (2003-09-01), Lagler
patent: 6690621 (2004-02-01), Porzio
patent: 6956316 (2005-10-01), Tessien et al.
patent: 6958568 (2005-10-01), Tessien et al.
patent: 6958569 (2005-10-01), Tessien et al.
patent: 6960869 (2005-11-01), Tessien et al.
patent: WO 01/39205 (2001-05-01), None
M. Dan et al., Ambient Pressure Effect on Single-Bubble Sonoluminescence, Physical Review Letters, Aug. 30, 1999, pp. 1870-1873, vol. 83, No. 9, Published in: US.
C. Desilets et al., Analyses and Measurements of Acoustically Matched, Air-Coupled Tonpilz Transducers, IEEE Ultrasonics Symposium Proceedings—1999, Oct. 17, 1999, pp. 1045-1048, vol. 2, Publisher: IEEE.
S.C. Butler et al., A Broadband Hybrid Magnetostrictive/Piezoelectric Transducer Array, Magsoft Update, Jul. 2001, pp. 1-7, vol. 7, No. 1, Publisher: Magsoft Corporation, Published in: US.
M.J. Lodeiro et al, High Frequency Displacement and Dielectric Measurements in Piezoelectric Materials, CPM8.1 Characterization of Advanced Functional Materials-Final Project Deliverables, Mar. 2002, pp. 1-12, Vol. MATC(MN), No. 21, Publisher: United Kingdom National Physical Laboratory, Published in: United Kingdom.
Gaitan Dario Felipe
Phillips Daniel A.
Tessien Ross Alan
Beck Patent Law Office of David G.
Dougherty Thomas M.
Impulse Devices, Inc.
LandOfFree
Acoustic driver assembly for a spherical cavitation chamber does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Acoustic driver assembly for a spherical cavitation chamber, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Acoustic driver assembly for a spherical cavitation chamber will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3610312