Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Reexamination Certificate
2008-01-22
2008-01-22
Dougherty, Thomas M. (Department: 2834)
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
C310S328000, C310S330000, C310S371000, C310S026000, C310S307000, C310S309000
Reexamination Certificate
active
07321185
ABSTRACT:
Two similarly shaped, such as rectangular, shells are attached to one another such that they form a resulting thin airfoil-like structure. The resulting device has at least two stable equilibrium shapes. The device can be transformed from one shape to another with a snap-through action. One or more actuators can be used to effect the snap-through; i.e., transform the device from one stable shape to another. Power to the actuators is needed only to transform the device from one shape to another.
REFERENCES:
patent: 3816774 (1974-06-01), Ohnuki et al.
patent: 4099211 (1978-07-01), Hathaway
patent: 4383195 (1983-05-01), Kolm et al.
patent: 4672257 (1987-06-01), Oota et al.
patent: 4915017 (1990-04-01), Perlov
patent: 5241235 (1993-08-01), Culp
patent: 5303105 (1994-04-01), Jorgenson
patent: 5315204 (1994-05-01), Park
patent: 5374011 (1994-12-01), Lazarus et al.
patent: 5628411 (1997-05-01), Mills et al.
patent: 5861702 (1999-01-01), Bishop et al.
patent: 5973441 (1999-10-01), Lo et al.
patent: 6392331 (2002-05-01), Sciacca et al.
patent: 6545395 (2003-04-01), Matsui et al.
patent: 6847155 (2005-01-01), Schwartz et al.
patent: 6979937 (2005-12-01), Masters et al.
patent: 2001/0043027 (2001-11-01), Hellbaum et al.
patent: 2003/0029705 (2003-02-01), Qiu et al.
patent: 2004/0004532 (2004-01-01), Davis et al.
patent: 2004/0050674 (2004-03-01), Rubel
patent: 2005/0023933 (2005-02-01), Magnussen et al.
patent: 2006/0038643 (2006-02-01), Xu et al.
patent: WO-02-25057 (2002-03-01), None
Hyer, M.W., “Some Observations on the Cured Shape of Thin Unsymmetric Laminates”, Journal of Composite Materials, 1981, p. 175-194.
Hyer, M.W., “Calculations of the Room-Temperature Shapes of Unsymmetric Laminates,” Journal of Composite Materials, 1981, p. 296-310.
Dano, M.L. and Hyer, M.W., “Thermally-Induced Deformation Behavior of Unsymmetric Laminates,” International Journal of Solids and Structures, 1998, vol. 35 ( No. 17), p. 2101-2120.
Hufenbach, W. Gude, M., and Kroll, L., “Design of Multistable Composites for Application in Adaptive Structures,” Composites Science and Technology, vol. 62 ( No. 16), p. 2201-2207, no date given.
Luo, J.J. and Daniel, I.M., “Thermally-Induced Deformation of Asymmetric Composite Laminates,” Proceedings of the 18th Annual Technical Conference of the American Society for Composites, 2003, p. 128-136.
Cho, M., Kim, M.H., Choi, H.S., Chung, H.C., Ahn, K.J., and Eom, Y.S., “A Study on the Room-Temperature Curvature Shapes of Unsymmetric Laminates Including Slippage Effects,” 1998, vol. 32 ( No. 5).
Ren. L, Parvizi-Majidi, A. and Li. Z, “Cured Shape of Cross-Ply Composite Thin Shells,” Journal of Composite Materials, 2003, vol. 37 ( No. 20), p. 1801-1820.
Schultz, M.S. and Hyer, M.W., “A Morphing Concept Based on Unsymmetric Composite Laminates and Piezoceramic MFC Actuators,” Proceedings of the 45th AIAA/ASME/ASCE/AHS/ASC Structures, no date given.
Schultz, M.R. and Hyer, M.W., “Snap-Through of Unsymmetric Cross-Ply Laminates Using Piezoceramic Actuators,” Journal of Intelligent Material Systems and Structures, vol. 14 ( No. 12), p. 795-814, no date given.
Dano, M.L. and Hyer, M.W., “Snap-Through of Unsymmetric Fiber-Reinforced Composite Laminates,” International Journal of Solids and Structures, p. 175-198, no date given.
Murphey, T.W. and Pellegrino S., “A Novel Actuated Composite Tape-Spring for Deployable Structures,” Proceedings of the 45th AIAA/ASME/ASCE/AHS/ASC Structures, no date given.
Iqbal, K. and Pellegrino, S., “Bi-Stable Composite Shells,” Proceedings of the 41st AIAA/ASME/ASCE/AHS/ASC Structures, no date given.
Galletly, D.A. and Guest, S.D., “Bistable Composite Slit Tubes. II. A Shell Model,” International Journal of Solids , p. 4503-4516, no date given.
Santer, M.J. and Pellegrino, S., “An Asymmetrically-Bistable Monolithic Energy-Storing Structure,” Proceedings of the 45th AIAA/ASME/ASCE/AHS/ASC Structures, no date given.
Schioler, T. and Pellegrino, S., “Multi-Configuration Space Frames,” Proceedings of the 45th AIAA/ASME/ASCE/AHS/ASC Structures, no date given.
Seffen, K.A., “Bi-Stable Concepts for Reconfigurable Structures,” Proceedings of the 45th AIAA/ASME/ASCE/AHS/ASC Structures, no date given.
Kebadze, E., Guest, S.D., and Pellegrino, S., “Bistable Prestressed Shell Structures,” International Journal of Solids and Structures, p. 2801-2820, no date given.
Wilson, J.R., “Active Aeroelastic Wing: A New/Old Twist on Flight,” Aerospace America, vol. 43 ( No. 1), p. 27-30, no date given.
Phillips, W.F., “New Twist on an old Wing Theory,” Aerospace America, vol. 40 ( No. 9), p. 34-37, no date given.
Dougherty Thomas M.
Edwards Robin W.
United States of America as represented by the Administrator of
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