Electrical-to-mechanical transducer apparatus and method

Details Electrical-to-mechanical transducer apparatus and method Electrical-to-mechanical transducer apparatus and method

2006-10-20

2009-08-25

SanMartin, Jaydi (Department: 2834)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

C310S339000

Reexamination Certificate

active

07579755

ABSTRACT:
A piezoelectric transducer able to convert an electrical signal into a mechanical motion. In various embodiments the transducer is used to form a motor and an actuator. In one embodiment a piezoceramic stack is supported as to experience a compressive load from a flexible beam. The flexible beam is installed under compression to assume an initial bowed shape. Applying an electrical signal to the piezoceramic stack causes decompression, and thus lengthening, of the stack. This in turn causes an increased compression of the flexible beam that causes it to flex from its initial bowed shape to an increased (i.e., more pronounced) bowed shape. An output member disposed against the flexible beam is driven by the flexing of the beam. Alternately applying and removing the electrical signal causes an alternating mechanical motion to be applied to the output member by the flexible beam.

REFERENCES:
patent: 4894811 (1990-01-01), Porzio
patent: 5479064 (1995-12-01), Sano
patent: 6074178 (2000-06-01), Bishop et al.
patent: 6236143 (2001-05-01), Lesieutre et al.
patent: 6356007 (2002-03-01), Silva
patent: 6465936 (2002-10-01), Knowles et al.
patent: 6858970 (2005-02-01), Malkin et al.
patent: 6894460 (2005-05-01), Clingman
patent: 6927528 (2005-08-01), Barillot et al.
patent: 7231874 (2007-06-01), Rastegar et al.
patent: 7436104 (2008-10-01), Clingman et al.
patent: 7462976 (2008-12-01), Semmere et al.
patent: 7521840 (2009-04-01), Heim
patent: 7521847 (2009-04-01), Heim
patent: 2006/0235300 (2006-10-01), Weng et al.
patent: WO 02/086981 (2002-10-01), None
Post-Buckled Precompressed (PBP) Actuators: Enhancing VTOL Autonomous High Speed MAVs by Ron Barrett; 46th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics & Materials Conference Apr. 18-21, 2005, Austin, Texas.
Active Structures Using Buckling Beam Actuators by Eric M. Mockensturm; Jie Jiang; 44th AIAA/ASME/ASCE/AHS Structures, Structural Dynamics, and Materials Conference; Apr. 7-10, 2003, Norfolk, Virginia.
Improvement of actuation displacement of LIPCA implementing bifurcation phenomena by Quoc Viet Nguyen, Seungsik Lee, Hoon Cheol Park; Smart Structures and Materials 2006; Active Materials: Behavior and Mechanics, edited by William D. Armstrong, Proc. of SPIE vol. 6170, 6170L, (2006).
“Can a Coupling Coefficient of a Piezoelectric Device Be Higher Than Those of Its Active Material?” by George A. Lesieutre and Christopher L. Davis; reprinted from Journal of Intelligent Material Systems and Structures, vol. 8—Oct. 1997.
A Centrally-Clamped Parallel-Beam Bistable MEMS Mechanism by Jin Qiu, Jeffrey H. Lang, Alexander H. Slocum; 0-7803-5998-/4/1/$10.00@2001IEEE.
A Curved-Beam Bistable Mechanism by Jin Qiu, Jeffrey H. Lang, Alexander H. Slocum; 1057-7157/04$20.00 copyright 2004IEEE.

Affiliated with

Also associated with

Rating

Electrical-to-mechanical transducer apparatus and method does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Electrical-to-mechanical transducer apparatus and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electrical-to-mechanical transducer apparatus and method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4054885