Thermally enhanced piezoelectric element

Details Thermally enhanced piezoelectric element Thermally enhanced piezoelectric element

2006-07-20

2008-07-29

Dougherty, Thomas M (Department: 2834)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

C310S366000

Reexamination Certificate

active

07405510

ABSTRACT:
A system and method for removing unwanted heat generated by a piezoelectric element of an ultrasound transducer. Some implementations have high thermal conductivity (HTC) material placed adjacent to the piezoelectric element. The HTC material can be thermally coupled to one or more heat sinks. Use of HTC material in conjunction with these piezoelectric element surfaces is managed to avoid degradation of propagating acoustic energy. Use of the HTC material in conjunction with heat sinks allows for creation of thermal paths away from the piezoelectric element. Active cooling of the heat sinks with water or air can further draw heat from the piezoelectric element. Further implementations form a composite matrix of thermally conductive material or interleave thermally conductive layers with piezoelectric material.

REFERENCES:
patent: 4499566 (1985-02-01), Abbott
patent: 5945770 (1999-08-01), Hanafy
patent: 6608428 (2003-08-01), Nishimura et al.
patent: 7071599 (2006-07-01), Namerikawa et al.
patent: 01-0293851 (1989-11-01), None
patent: WO/2005/078815 (2005-08-01), None

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